**** BEGIN LICENSE BLOCK ***** Version: EPL 2.0/GPL 2.0/LGPL 2.1 The contents of this file are subject to the Eclipse Public License Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.eclipse.org/legal/epl-v20.html Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the specific language governing rights and limitations under the License. Copyright (C) 2009-2013 Yoko Harada Alternatively, the contents of this file may be used under the terms of either of the GNU General Public License Version 2 or later (the "GPL"), or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), in which case the provisions of the GPL or the LGPL are applicable instead of those above. If you wish to allow use of your version of this file only under the terms of either the GPL or the LGPL, and not to allow others to use your version of this file under the terms of the EPL, indicate your decision by deleting the provisions above and replace them with the notice and other provisions required by the GPL or the LGPL. If you do not delete the provisions above, a recipient may use your version of this file under the terms of any one of the EPL, the GPL or the LGPL. **** END LICENSE BLOCK *****
/** * **** BEGIN LICENSE BLOCK ***** * Version: EPL 2.0/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Eclipse Public * License Version 2.0 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.eclipse.org/legal/epl-v20.html * * Software distributed under the License is distributed on an "AS * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or * implied. See the License for the specific language governing * rights and limitations under the License. * * Copyright (C) 2009-2013 Yoko Harada <yokolet@gmail.com> * * Alternatively, the contents of this file may be used under the terms of * either of the GNU General Public License Version 2 or later (the "GPL"), * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the EPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the EPL, the GPL or the LGPL. * **** END LICENSE BLOCK ***** */
package org.jruby.embed; import java.io.InputStream; import java.io.PrintStream; import java.io.Reader; import java.io.Writer; import java.net.URL; import java.util.HashMap; import java.util.List; import java.util.Map; import org.jruby.Profile; import org.jruby.Ruby; import org.jruby.RubyGlobal.InputGlobalVariable; import org.jruby.RubyGlobal.OutputGlobalVariable; import org.jruby.RubyIO; import org.jruby.RubyInstanceConfig.CompileMode; import org.jruby.RubyInstanceConfig.LoadServiceCreator; import org.jruby.RubyInstanceConfig.ProfilingMode; import org.jruby.embed.internal.BiVariableMap; import org.jruby.embed.internal.ConcurrentLocalContextProvider; import org.jruby.embed.internal.EmbedRubyInterfaceAdapterImpl; import org.jruby.embed.internal.EmbedRubyObjectAdapterImpl; import org.jruby.embed.internal.EmbedRubyRuntimeAdapterImpl; import org.jruby.embed.internal.LocalContextProvider; import org.jruby.embed.internal.SingleThreadLocalContextProvider; import org.jruby.embed.internal.SingletonLocalContextProvider; import org.jruby.embed.internal.ThreadSafeLocalContextProvider; import org.jruby.embed.io.ReaderInputStream; import org.jruby.embed.io.WriterOutputStream; import org.jruby.exceptions.RaiseException; import org.jruby.internal.runtime.GlobalVariable; import org.jruby.javasupport.JavaEmbedUtils; import org.jruby.runtime.Block; import org.jruby.runtime.builtin.IRubyObject; import org.jruby.runtime.profile.builtin.ProfileOutput; import org.jruby.util.KCode; import org.jruby.util.SafePropertyAccessor; import org.jruby.util.cli.OutputStrings; import org.jruby.util.cli.Options;
ScriptingContainer provides various methods and resources that are useful for embedding Ruby in Java. Using this class, users can run Ruby scripts from Java programs easily. Also, users can use methods defined or implemented by Ruby. ScriptingContainer allows users to set various configuration parameters. Some of them are per-container properties, while others are per-evaluation attributes. For example, a local context scope, local variable behavior, load paths are per-container properties. Please see PropertyName and AttributeName for more details. Be aware that the per-container properties should be set prior to get Ruby runtime being instantiated; otherwise, default values are applied to. ScriptingContainer delays Ruby runtime initialization as much as possible to improve startup time. When values are put into the ScriptingContainer, or runScriptlet method gets run the runtime is created internally. However, the default, singleton local context scope behave slightly different. If a Ruby runtime has been already instantiated by another ScriptingContainer, application, etc, the same runtime will be re-used. Below are examples. The first Example is a very simple Hello World. After initializing a ScriptingContainer, a Ruby script, puts "Hello World!", runs and produces "Hello World!."
Example 1: 
    ScriptingContainer container = new ScriptingContainer();
    container.runScriptlet("puts \"Hello World!\"");
 Produces: Hello World! 
The second example shows how to share variables between Java and Ruby. In this example, a local variable "x" is shared. To make this happen, a local variable behavior should be transient or persistent. As for JSR223 JRuby engine, set these types using a System property, org.jruby.embed.localvariable.behavior. If the local variable behavior is one of transient or persistent, Ruby's local, instance, global variables and constants are available to share between Java and Ruby. (A class variable sharing does not work on current version) Thus, "x" in Java is also "x" in Ruby.
Example 2: 
    ScriptingContainer container = new ScriptingContainer();
    container.put("x", 12345);
    container.runScriptlet("puts x.to_s(2)");
 Produces: 11000000111001 
The third examples shows how to keep local variables across multiple evaluations. This feature simulates BSF engine for JRuby. In terms of Ruby semantics, local variables should not survive after the evaluation has completed. Thus, this behavior is optional, and users need to specify LocalVariableBehavior.PERSISTENT when the container is instantiated.
Example 3: 
    ScriptingContainer container = new ScriptingContainer(LocalVariableBehavior.PERSISTENT);
    container.runScriptlet("p=9.0");
    container.runScriptlet("q = Math.sqrt p");
    container.runScriptlet("puts \"square root of #{p} is #{q}\"");
    System.out.println("Ruby used values: p = " + container.get("p") + ", q = " + container.get("q"));
 Produces: square root of 9.0 is 3.0 Ruby used values: p = 9.0, q = 3.0 
Also, ScriptingContainer provides better i18n support. For example, Unicode Escape Sequence can be included in Ruby scripts.

In addition, ScriptingContainer supports a parse-once-eval-many-times feature, invoking methods defined by Ruby, and getting an instance of a specified interface that has been implemented by Ruby.

Example 4: 
    ScriptingContainer container = new ScriptingContainer();
    String script =
      "def message\n" +
        "\"message: #{@message}\"\n" +
      "end\n" +
      "message";
    container.put("@message", "What's up?");
    JavaEmbedUtils.EvalUnit unit = container.parse(script);
    IRubyObject msg = unit.run(); // a RubyString instance
    System.out.println(JavaEmbedUtils.rubyToJava(msg));
    container.put("@message", "Fabulous!");
    msg = unit.run();
    System.out.println(JavaEmbedUtils.rubyToJava(msg));
    container.put("@message", "That's the way you are.");
    msg = unit.run();
    System.out.println(JavaEmbedUtils.rubyToJava(msg));
 Produces: message: What's up? message: Fabulous! message: That's the way you are. 
See more details at project's {@see Wiki}
Author:Yoko Harada
/** * ScriptingContainer provides various methods and resources that are useful * for embedding Ruby in Java. Using this class, users can run Ruby scripts from * Java programs easily. Also, users can use methods defined or implemented by Ruby. * * ScriptingContainer allows users to set various configuration parameters. * Some of them are per-container properties, while others are per-evaluation attributes. * For example, a local context scope, local variable behavior, load paths are * per-container properties. Please see {@link PropertyName} and {@link AttributeName} * for more details. Be aware that the per-container properties should be set prior to * get Ruby runtime being instantiated; otherwise, default values are applied to. * * ScriptingContainer delays Ruby runtime initialization as much as possible to * improve startup time. When values are put into the ScriptingContainer, or runScriptlet * method gets run the runtime is created internally. However, the default, singleton * local context scope behave slightly different. If a Ruby runtime has been already * instantiated by another ScriptingContainer, application, etc, the same runtime * will be re-used. * * Below are examples. * * The first Example is a very simple Hello World. After initializing a ScriptingContainer, * a Ruby script, puts "Hello World!", runs and produces "Hello World!." * <pre> * Example 1: * {@code * ScriptingContainer container = new ScriptingContainer(); * container.runScriptlet("puts \"Hello World!\""); * } * Produces: * Hello World! * </pre> * * The second example shows how to share variables between Java and Ruby. * In this example, a local variable {@code "x"} is shared. To make this happen, * a local variable behavior should be transient or persistent. * As for JSR223 JRuby engine, set these types using a System property, * <b>org.jruby.embed.localvariable.behavior</b>. * If the local variable behavior is one of transient or persistent, * Ruby's local, instance, global variables and constants are available to share * between Java and Ruby. (A class variable sharing does not work on current version) * Thus, {@code "x"} in Java is also {@code "x"} in Ruby. * * <pre> * Example 2: * {@code * ScriptingContainer container = new ScriptingContainer(); * container.put("x", 12345); * container.runScriptlet("puts x.to_s(2)"); * } * Produces: * 11000000111001 * </pre> * * The third examples shows how to keep local variables across multiple evaluations. * This feature simulates BSF engine for JRuby. In terms of Ruby semantics, * local variables should not survive after the evaluation has completed. Thus, * this behavior is optional, and users need to specify LocalVariableBehavior.PERSISTENT * when the container is instantiated. * * <pre> * Example 3: * {@code * ScriptingContainer container = new ScriptingContainer(LocalVariableBehavior.PERSISTENT); * container.runScriptlet("p=9.0"); * container.runScriptlet("q = Math.sqrt p"); * container.runScriptlet("puts \"square root of #{p} is #{q}\""); * System.out.println("Ruby used values: p = " + container.get("p") + ", q = " + container.get("q")); * } * Produces: * square root of 9.0 is 3.0 * Ruby used values: p = 9.0, q = 3.0 * </pre> * * Also, ScriptingContainer provides better i18n support. For example, * Unicode Escape Sequence can be included in Ruby scripts. * * <p>In addition, ScriptingContainer supports a parse-once-eval-many-times feature, * invoking methods defined by Ruby, and getting an instance of a specified interface * that has been implemented by Ruby. * * <pre> * Example 4: * {@code * ScriptingContainer container = new ScriptingContainer(); * String script = * "def message\n" + * "\"message: #{@message}\"\n" + * "end\n" + * "message"; * container.put("@message", "What's up?"); * JavaEmbedUtils.EvalUnit unit = container.parse(script); * IRubyObject msg = unit.run(); // a RubyString instance * System.out.println(JavaEmbedUtils.rubyToJava(msg)); * container.put("@message", "Fabulous!"); * msg = unit.run(); * System.out.println(JavaEmbedUtils.rubyToJava(msg)); * container.put("@message", "That's the way you are."); * msg = unit.run(); * System.out.println(JavaEmbedUtils.rubyToJava(msg)); * } * Produces: * message: What's up? * message: Fabulous! * message: That's the way you are. * </pre> * * See more details at project's * {@see <a href="https://github.com/jruby/jruby/wiki/RedBridge">Wiki</a>} * * @author Yoko Harada <yokolet@gmail.com> */
public class ScriptingContainer implements EmbedRubyInstanceConfigAdapter { private final Map<String, String[]> basicProperties; private final LocalContextScope scope; private final LocalContextProvider provider; private final EmbedRubyRuntimeAdapter runtimeAdapter = new EmbedRubyRuntimeAdapterImpl(this); private final EmbedRubyObjectAdapter objectAdapter = new EmbedRubyObjectAdapterImpl(this); private final EmbedRubyInterfaceAdapter interfaceAdapter = new EmbedRubyInterfaceAdapterImpl(this);
Constructs a ScriptingContainer with a default values.
/** * Constructs a ScriptingContainer with a default values. */
public ScriptingContainer() { this(LocalContextScope.SINGLETON, LocalVariableBehavior.TRANSIENT, true); }
Constructs a ScriptingContainer with a specified local context type.
Params:
  • scope – a local context type.
/** * Constructs a ScriptingContainer with a specified local context type. * * @param scope a local context type. */
public ScriptingContainer(LocalContextScope scope) { this(scope, LocalVariableBehavior.TRANSIENT, true); }
Constructs a ScriptingContainer with a specified local variable behavior.
Params:
  • behavior – a local variable behavior
/** * Constructs a ScriptingContainer with a specified local variable behavior. * * @param behavior a local variable behavior */
public ScriptingContainer(LocalVariableBehavior behavior) { this(LocalContextScope.SINGLETON, behavior, true); }
Constructs a ScriptingContainer with a specified local context type and variable behavior.
Params:
  • scope – a local context type
  • behavior – a local variable behavior
/** * Constructs a ScriptingContainer with a specified local context type and * variable behavior. * * @param scope a local context type * @param behavior a local variable behavior */
public ScriptingContainer(LocalContextScope scope, LocalVariableBehavior behavior) { this(scope, behavior, true); }
Constructs a ScriptingContainer with a specified local context scope, local variable behavior and laziness.
Params:
  • scope – is one of a local context scope defined by LocalContextScope
  • behavior – is one of a local variable behavior defined by LocalVariableBehavior
  • lazy – is a switch to do lazy retrieval of variables/constants from Ruby runtime. Default is true. When this value is true, ScriptingContainer tries to get as many variables/constants as possible from Ruby runtime.
/** * Constructs a ScriptingContainer with a specified local context scope, * local variable behavior and laziness. * * @param scope is one of a local context scope defined by {@link LocalContextScope} * @param behavior is one of a local variable behavior defined by {@link LocalVariableBehavior} * @param lazy is a switch to do lazy retrieval of variables/constants from * Ruby runtime. Default is true. When this value is true, ScriptingContainer tries to * get as many variables/constants as possible from Ruby runtime. */
public ScriptingContainer(LocalContextScope scope, LocalVariableBehavior behavior, boolean lazy) { this.provider = getProviderInstance(scope, behavior, lazy); this.scope = scope; try { initRubyInstanceConfig(); } catch (RaiseException ex) { // TODO this seems useless - except that we get a Java stack trace throw new RuntimeException(ex); } basicProperties = getBasicProperties(); } static LocalContextProvider getProviderInstance(LocalContextScope scope, LocalVariableBehavior behavior, boolean lazy) { switch(scope) { case THREADSAFE : return new ThreadSafeLocalContextProvider(behavior, lazy); case CONCURRENT : return new ConcurrentLocalContextProvider(behavior, lazy); case SINGLETHREAD : return new SingleThreadLocalContextProvider(behavior, lazy); case SINGLETON : default : return SingletonLocalContextProvider.getProvider(behavior, lazy); } } private void initRubyInstanceConfig() throws RaiseException { String home = SafePropertyAccessor.getenv("JRUBY_HOME"); if (home != null) { provider.getRubyInstanceConfig().setJRubyHome(home); } provider.getRubyInstanceConfig().setScriptFileName("<script>"); } // maybe these properties are not used at all? private static Map<String, String[]> getBasicProperties() { Map<String, String[]> properties = new HashMap<String, String[]>(); properties.put("container.ids", new String[]{"ruby", "jruby"}); properties.put("language.extension", new String[]{"rb"}); properties.put("language.name", new String[]{"ruby"}); properties.put("language.mimetypes", new String[]{"application/x-ruby"}); return properties; }
Returns a list of load paths for Ruby scripts/libraries. If no paths is given, the list is created from java.class.path System property.
Since:JRuby 1.5.0.
Returns:a list of load paths.
/** * Returns a list of load paths for Ruby scripts/libraries. If no paths is * given, the list is created from java.class.path System property. * * @since JRuby 1.5.0. * * @return a list of load paths. */
public List<String> getLoadPaths() { return provider.getRubyInstanceConfig().getLoadPaths(); }
Changes a list of load paths Ruby scripts/libraries. The default value is an empty array. If no paths is given, the list is created from java.class.path System property. This value can be set by org.jruby.embed.class.path System property, also. Call this method before you use put/get, runScriptlet, and parse methods so that the given paths will be used.
Params:
  • paths – a new list of load paths.
Since:JRuby 1.5.0.
/** * Changes a list of load paths Ruby scripts/libraries. The default value * is an empty array. If no paths is given, the list is created from * java.class.path System property. This value can be set by * org.jruby.embed.class.path System property, also. * Call this method before you use put/get, runScriptlet, and parse methods so that * the given paths will be used. * * @since JRuby 1.5.0. * * @param paths a new list of load paths. */
public void setLoadPaths(List<String> paths) { provider.getRubyInstanceConfig().setLoadPaths(paths); }
Returns an input stream assigned to STDIN and $stdin.
Since:JRuby 1.5.0.
Returns:input stream of STDIN and $stdin
/** * Returns an input stream assigned to STDIN and $stdin. * * @since JRuby 1.5.0. * * @return input stream of STDIN and $stdin */
public InputStream getInput() { return provider.getRubyInstanceConfig().getInput(); }
Changes STDIN and $stdin to a given input stream. The default standard input is java.lang.System.in. Call this method before you use put/get, runScriptlet, and parse methods so that the given input stream will be used.
Params:
  • istream – an input stream to be set
Since:JRuby 1.5.0.
/** * Changes STDIN and $stdin to a given input stream. The default standard input * is java.lang.System.in. * Call this method before you use put/get, runScriptlet, and parse methods so that * the given input stream will be used. * * @since JRuby 1.5.0. * * @param istream an input stream to be set */
public void setInput(InputStream istream) { provider.getRubyInstanceConfig().setInput(istream); }
Changes STDIN and $stdin to a given reader. No reader is set by default. Call this method before you use put/get, runScriptlet, and parse methods so that the given reader will be used.
Params:
  • reader – a reader to be set
Since:JRuby 1.5.0.
/** * Changes STDIN and $stdin to a given reader. No reader is set by default. * Call this method before you use put/get, runScriptlet, and parse methods so that * the given reader will be used. * * @since JRuby 1.5.0. * * @param reader a reader to be set */
public void setInput(Reader reader) { if (reader == null) { provider.getRubyInstanceConfig().setInput(null); } else { ReaderInputStream istream = new ReaderInputStream(reader); provider.getRubyInstanceConfig().setInput(istream); } }
Returns an output stream assigned to STDOUT and $stdout.
Since:JRuby 1.5.0.
Returns:an output stream of STDOUT and $stdout
/** * Returns an output stream assigned to STDOUT and $stdout. * * @since JRuby 1.5.0. * * @return an output stream of STDOUT and $stdout */
public PrintStream getOutput() { return provider.getRubyInstanceConfig().getOutput(); }
Changes STDOUT and $stdout to a given output stream. The default standard output is java.lang.System.out. Call this method before you use put/get, runScriptlet, and parse methods so that the given output stream will be used.
Params:
  • pstream – an output stream to be set
Since:JRuby 1.5.0.
/** * Changes STDOUT and $stdout to a given output stream. The default standard * output is java.lang.System.out. * Call this method before you use put/get, runScriptlet, and parse methods so that * the given output stream will be used. * * @since JRuby 1.5.0. * * @param pstream an output stream to be set */
public void setOutput(PrintStream pstream) { provider.getRubyInstanceConfig().setOutput(pstream); }
Changes STDOUT and $stdout to a given writer. No writer is set by default. Call this method before you use put/get, runScriptlet, and parse methods so that the given writer will be used.
Params:
  • writer – a writer to be set
Since:JRuby 1.5.0.
/** * Changes STDOUT and $stdout to a given writer. No writer is set by default. * Call this method before you use put/get, runScriptlet, and parse methods so that * the given writer will be used. * * @since JRuby 1.5.0. * * @param writer a writer to be set */
public void setOutput(Writer writer) { if (writer == null) { provider.getRubyInstanceConfig().setOutput(null); } else { WriterOutputStream ostream = new WriterOutputStream(writer); PrintStream pstream = new PrintStream(ostream); provider.getRubyInstanceConfig().setOutput(pstream); } }
Returns an error stream assigned to STDERR and $stderr.
Since:JRuby 1.5.0.
Returns:output stream for error stream
/** * Returns an error stream assigned to STDERR and $stderr. * * @since JRuby 1.5.0. * * @return output stream for error stream */
public PrintStream getError() { return provider.getRubyInstanceConfig().getError(); }
Changes STDERR and $stderr to a given print stream. The default standard error is java.lang.System.err. Call this method before you use put/get, runScriptlet, and parse methods so that the given print stream will be used.
Params:
  • pstream – a print stream to be set
Since:JRuby 1.5.0.
/** * Changes STDERR and $stderr to a given print stream. The default standard error * is java.lang.System.err. * Call this method before you use put/get, runScriptlet, and parse methods so that * the given print stream will be used. * * @since JRuby 1.5.0. * * @param pstream a print stream to be set */
public void setError(PrintStream pstream) { provider.getRubyInstanceConfig().setError(pstream); }
Changes STDERR and $stderr to a given writer. No writer is set by default. Call this method before you use put/get, runScriptlet, and parse methods so that the given writer will be used.
Params:
  • writer – a writer to be set
Since:JRuby 1.5.0.
/** * Changes STDERR and $stderr to a given writer. No writer is set by default. * Call this method before you use put/get, runScriptlet, and parse methods so that * the given writer will be used. * * @since JRuby 1.5.0. * * @param writer a writer to be set */
public void setError(Writer writer) { if (writer == null) { provider.getRubyInstanceConfig().setError(null); } else { WriterOutputStream ostream = new WriterOutputStream(writer); PrintStream pstream = new PrintStream(ostream); provider.getRubyInstanceConfig().setError(pstream); } }
Returns a compile mode currently chosen, which is one of CompileMode.JIT, CompileMode.FORCE, CompileMode.OFF. The default mode is CompileMode.OFF if CompatVersion.RUBY1_9 is chosen, otherwise, CompileMode.JIT. Also, CompileMode.OFF is chosen when a security restriction is set.
Since:JRuby 1.5.0.
Returns:a compile mode.
/** * Returns a compile mode currently chosen, which is one of CompileMode.JIT, * CompileMode.FORCE, CompileMode.OFF. The default mode is CompileMode.OFF * if CompatVersion.RUBY1_9 is chosen, otherwise, CompileMode.JIT. Also, * CompileMode.OFF is chosen when a security restriction is set. * * @since JRuby 1.5.0. * * @return a compile mode. */
public CompileMode getCompileMode() { return provider.getRubyInstanceConfig().getCompileMode(); }
Changes a compile mode to a given mode, which should be one of CompileMode.JIT, CompileMode.FORCE, CompileMode.OFF. Call this method before you use put/get, runScriptlet, and parse methods so that the given mode will be used.
Params:
  • mode – compile mode
Since:JRuby 1.5.0.
/** * Changes a compile mode to a given mode, which should be one of CompileMode.JIT, * CompileMode.FORCE, CompileMode.OFF. * Call this method before you use put/get, runScriptlet, and parse methods so that * the given mode will be used. * * @since JRuby 1.5.0. * * @param mode compile mode */
public void setCompileMode(CompileMode mode) { provider.getRubyInstanceConfig().setCompileMode(mode); }
Tests whether Ruby runs in a process or not.
Since:JRuby 1.5.0.
Returns:true if Ruby is configured to run in a process, otherwise, false.
/** * Tests whether Ruby runs in a process or not. * * @since JRuby 1.5.0. * * @return true if Ruby is configured to run in a process, otherwise, false. */
public boolean isRunRubyInProcess() { return provider.getRubyInstanceConfig().isRunRubyInProcess(); }
Changes the value to determine whether Ruby runs in a process or not. The default value is true. Call this method before you use put/get, runScriptlet, and parse methods so that the given condition will be set.
Params:
  • inprocess – true when Ruby is set to run in the process, or false not to run in the process.
Since:JRuby 1.5.0.
/** * Changes the value to determine whether Ruby runs in a process or not. The * default value is true. * Call this method before you use put/get, runScriptlet, and parse methods so that * the given condition will be set. * * @since JRuby 1.5.0. * * @param inprocess true when Ruby is set to run in the process, or false not to * run in the process. */
public void setRunRubyInProcess(boolean inprocess) { provider.getRubyInstanceConfig().setRunRubyInProcess(inprocess); }
Tests whether the Object Space is enabled or not.
Since:JRuby 1.5.0.
Returns:true if the Object Space is able to use, otherwise, false.
/** * Tests whether the Object Space is enabled or not. * * @since JRuby 1.5.0. * * @return true if the Object Space is able to use, otherwise, false. */
public boolean isObjectSpaceEnabled() { return provider.getRubyInstanceConfig().isObjectSpaceEnabled(); }
Changes the value to determine whether the Object Space is enabled or not. The default value is false. Call this method before you use put/get, runScriptlet, and parse methods so that the given condition will be used.
Params:
  • enable – true to enable the Object Space, or false to disable.
Since:JRuby 1.5.0. This value can be set by jruby.objectspace.enabled system property.
/** * Changes the value to determine whether the Object Space is enabled or not. The * default value is false. * Call this method before you use put/get, runScriptlet, and parse methods so that * the given condition will be used. * * @since JRuby 1.5.0. * * This value can be set by jruby.objectspace.enabled system property. * * @param enable true to enable the Object Space, or false to disable. */
public void setObjectSpaceEnabled(boolean enable) { provider.getRubyInstanceConfig().setObjectSpaceEnabled(enable); }
Returns a map of environment variables.
Since:JRuby 1.5.0.
Returns:a map that has environment variables' key-value pairs.
/** * Returns a map of environment variables. * * @since JRuby 1.5.0. * * @return a map that has environment variables' key-value pairs. */
public Map getEnvironment() { return provider.getRubyInstanceConfig().getEnvironment(); }
Changes an environment variables' map. Call this method before you use put/get, runScriptlet, and parse methods so that initial configurations will work.
Params:
  • environment – a new map of environment variables.
Since:JRuby 1.5.0.
/** * Changes an environment variables' map. * Call this method before you use put/get, runScriptlet, and parse methods so that * initial configurations will work. * * @since JRuby 1.5.0. * * @param environment a new map of environment variables. */
public void setEnvironment(Map environment) { provider.getRubyInstanceConfig().setEnvironment(environment); }
Returns a current directory. The default current directory is identical to a value of "user.dir" system property if no security restriction is set. If the "user.dir" directory is protected by the security restriction, the default value is "/".
Since:JRuby 1.5.0.
Returns:a current directory.
/** * Returns a current directory. * * The default current directory is identical to a value of "user.dir" system * property if no security restriction is set. If the "user.dir" directory is * protected by the security restriction, the default value is "/". * * @since JRuby 1.5.0. * * @return a current directory. */
public String getCurrentDirectory() { if (provider.isRuntimeInitialized()) { return provider.getRuntime().getCurrentDirectory(); } return provider.getRubyInstanceConfig().getCurrentDirectory(); }
Changes a current directory to a given directory. The current directory can be changed anytime.
Params:
  • directory – a new directory to be set.
Since:JRuby 1.5.0.
/** * Changes a current directory to a given directory. * The current directory can be changed anytime. * * @since JRuby 1.5.0. * * @param directory a new directory to be set. */
public void setCurrentDirectory(String directory) { if (provider.isRuntimeInitialized()) { provider.getRuntime().setCurrentDirectory(directory); } else { provider.getRubyInstanceConfig().setCurrentDirectory(directory); } }
Returns a JRuby home directory. The default JRuby home is the value of JRUBY_HOME environment variable, or "jruby.home" system property when no security restriction is set to those directories. If none of JRUBY_HOME or jruby.home is set and jruby-complete.jar is used, the default JRuby home is "/META-INF/jruby.home" in the jar archive. Otherwise, "java.io.tmpdir" system property is the default value.
Since:JRuby 1.5.0.
Returns:a JRuby home directory.
/** * Returns a JRuby home directory. * * The default JRuby home is the value of JRUBY_HOME environment variable, * or "jruby.home" system property when no security restriction is set to * those directories. If none of JRUBY_HOME or jruby.home is set and jruby-complete.jar * is used, the default JRuby home is "/META-INF/jruby.home" in the jar archive. * Otherwise, "java.io.tmpdir" system property is the default value. * * @since JRuby 1.5.0. * * @return a JRuby home directory. */
public String getHomeDirectory() { return provider.getRubyInstanceConfig().getJRubyHome(); }
Changes a JRuby home directory to a directory of a given name. Call this method before you use put/get, runScriptlet, and parse methods so that the given directory will be used.
Params:
  • home – a name of new JRuby home directory.
Since:JRuby 1.5.0.
/** * Changes a JRuby home directory to a directory of a given name. * Call this method before you use put/get, runScriptlet, and parse methods so that * the given directory will be used. * * @since JRuby 1.5.0. * * @param home a name of new JRuby home directory. */
public void setHomeDirectory(String home) { provider.getRubyInstanceConfig().setJRubyHome(home); }
Returns a class loader object that is currently used. This loader loads Ruby files and libraries.
Since:JRuby 1.5.0.
Returns:a class loader object that is currently used.
/** * Returns a class loader object that is currently used. This loader loads * Ruby files and libraries. * * @since JRuby 1.5.0. * * @return a class loader object that is currently used. */
public ClassLoader getClassLoader() { return provider.getRubyInstanceConfig().getLoader(); }
Changes a class loader to a given loader. Call this method before you use put/get, runScriptlet, and parse methods so that the given class loader will be used.
Params:
  • loader – a new class loader to be set.
Since:JRuby 1.5.0.
/** * Changes a class loader to a given loader. * Call this method before you use put/get, runScriptlet, and parse methods so that * the given class loader will be used. * * @since JRuby 1.5.0. * * @param loader a new class loader to be set. */
public void setClassLoader(ClassLoader loader) { provider.getRubyInstanceConfig().setLoader(loader); }
Returns a Profile currently used. The default value is Profile.DEFAULT, which has the same behavior to Profile.ALL. Profile allows you to define a restricted subset of code to be loaded during the runtime initialization. When you use JRuby in restricted environment such as Google App Engine, Profile is a helpful option.
Since:JRuby 1.5.0.
Returns:a current profiler.
/** * Returns a Profile currently used. The default value is Profile.DEFAULT, * which has the same behavior to Profile.ALL. * Profile allows you to define a restricted subset of code to be loaded during * the runtime initialization. When you use JRuby in restricted environment * such as Google App Engine, Profile is a helpful option. * * @since JRuby 1.5.0. * * @return a current profiler. */
public Profile getProfile() { return provider.getRubyInstanceConfig().getProfile(); }
Changes a Profile to a given one. The default value is Profile.DEFAULT, which has the same behavior to Profile.ALL. Call this method before you use put/get, runScriptlet, and parse methods so that initial configurations will work. Profile allows you to define a restricted subset of code to be loaded during the runtime initialization. When you use JRuby in restricted environment such as Google App Engine, Profile is a helpful option. For example, Profile.NO_FILE_CLASS doesn't load File class.
Params:
  • profile – a new profiler to be set.
Since:JRuby 1.5.0.
/** * Changes a Profile to a given one. The default value is Profile.DEFAULT, * which has the same behavior to Profile.ALL. * Call this method before you use put/get, runScriptlet, and parse methods so that * initial configurations will work. * * Profile allows you to define a restricted subset of code to be loaded during * the runtime initialization. When you use JRuby in restricted environment * such as Google App Engine, Profile is a helpful option. For example, * Profile.NO_FILE_CLASS doesn't load File class. * * @since JRuby 1.5.0. * * @param profile a new profiler to be set. */
public void setProfile(Profile profile) { provider.getRubyInstanceConfig().setProfile(profile); }
Returns currently configured ProfileOutput object, which determines where the output of profiling operations will be sent. (e.g., a file specified by --profile.out).
Since:JRuby 1.7.15
Returns:current profiling output location.
/** * Returns currently configured ProfileOutput object, which determines where * the output of profiling operations will be sent. (e.g., a file specified * by --profile.out). * * @since JRuby 1.7.15 * * @return current profiling output location. */
public ProfileOutput getProfileOutput() { return provider.getRubyInstanceConfig().getProfileOutput(); }
Changes ProfileOutput to given one. The default value is a ProfileOutput instance that writes to stderr. Similar to passing `--profile.out` from the command line
Params:
  • out – a new ProfileOutput object, to which profiling data should be written
Since:JRuby 1.7.15
/** * Changes ProfileOutput to given one. The default value is a ProfileOutput * instance that writes to stderr. Similar to passing `--profile.out` from * the command line * * @since JRuby 1.7.15 * * @param out a new ProfileOutput object, to which profiling data should be written */
public void setProfileOutput(ProfileOutput out) { provider.getRubyInstanceConfig().setProfileOutput(out); }
Returns a ProfilingMode currently used. The default value is ProfilingMode.OFF.
Since:JRuby 1.6.6.
Returns:a current profiling mode.
/** * Returns a ProfilingMode currently used. The default value is ProfilingMode.OFF. * * @since JRuby 1.6.6. * * @return a current profiling mode. */
public ProfilingMode getProfilingMode() { return provider.getRubyInstanceConfig().getProfilingMode(); }
Changes a ProfilingMode to a given one. The default value is Profiling.OFF. Call this method before you use put/get, runScriptlet, and parse methods so that initial configurations will work. ProfilingMode allows you to change profiling style. Profiling.OFF - default. profiling off. Profiling.API - activates Ruby profiler API. equivalent to --profile.api command line option Profiling.FLAT - synonym for --profile command line option equivalent to --profile.flat command line option Profiling.GRAPH - runs with instrumented (timed) profiling, graph format. equivalent to --profile.graph command line option.
Params:
  • mode – a new profiling mode to be set.
Since:JRuby 1.6.6.
Deprecated:Use setProfilingMode instead
/** * Changes a ProfilingMode to a given one. The default value is Profiling.OFF. * Call this method before you use put/get, runScriptlet, and parse methods so that * initial configurations will work. * * ProfilingMode allows you to change profiling style. * * Profiling.OFF - default. profiling off. * Profiling.API - activates Ruby profiler API. equivalent to --profile.api command line option * Profiling.FLAT - synonym for --profile command line option equivalent to --profile.flat command line option * Profiling.GRAPH - runs with instrumented (timed) profiling, graph format. equivalent to --profile.graph command line option. * * @since JRuby 1.6.6. * * @deprecated Use setProfilingMode instead * * @param mode a new profiling mode to be set. */
@Deprecated public void setProfile(ProfilingMode mode) { provider.getRubyInstanceConfig().setProfilingMode(mode); }
Changes a ProfilingMode to a given one. The default value is Profiling.OFF. Call this method before you use put/get, runScriptlet, and parse methods so that initial configurations will work. ProfilingMode allows you to change profiling style. Profiling.OFF - default. profiling off. Profiling.API - activates Ruby profiler API. equivalent to --profile.api command line option Profiling.FLAT - synonym for --profile command line option equivalent to --profile.flat command line option Profiling.GRAPH - runs with instrumented (timed) profiling, graph format. equivalent to --profile.graph command line option.
Params:
  • mode – a new profiling mode to be set.
Since:JRuby 1.7.15
/** * Changes a ProfilingMode to a given one. The default value is Profiling.OFF. * Call this method before you use put/get, runScriptlet, and parse methods so that * initial configurations will work. * * ProfilingMode allows you to change profiling style. * * Profiling.OFF - default. profiling off. * Profiling.API - activates Ruby profiler API. equivalent to --profile.api command line option * Profiling.FLAT - synonym for --profile command line option equivalent to --profile.flat command line option * Profiling.GRAPH - runs with instrumented (timed) profiling, graph format. equivalent to --profile.graph command line option. * * @since JRuby 1.7.15 * * @param mode a new profiling mode to be set. */
public void setProfilingMode(ProfilingMode mode) { provider.getRubyInstanceConfig().setProfilingMode(mode); }
Returns a LoadServiceCreator currently used.
Since:JRuby 1.5.0.
Returns:a current LoadServiceCreator.
/** * Returns a LoadServiceCreator currently used. * * @since JRuby 1.5.0. * * @return a current LoadServiceCreator. */
public LoadServiceCreator getLoadServiceCreator() { return provider.getRubyInstanceConfig().getLoadServiceCreator(); }
Changes a LoadServiceCreator to a given one. Call this method before you use put/get, runScriptlet, and parse methods so that initial configurations will work.
Params:
  • creator – a new LoadServiceCreator
Since:JRuby 1.5.0.
/** * Changes a LoadServiceCreator to a given one. * Call this method before you use put/get, runScriptlet, and parse methods so that * initial configurations will work. * * @since JRuby 1.5.0. * * @param creator a new LoadServiceCreator */
public void setLoadServiceCreator(LoadServiceCreator creator) { provider.getRubyInstanceConfig().setLoadServiceCreator(creator); }
Returns a list of argument.
Since:JRuby 1.5.0.
Returns:an arguments' list.
/** * Returns a list of argument. * * @since JRuby 1.5.0. * * @return an arguments' list. */
public String[] getArgv() { return provider.getRubyInstanceConfig().getArgv(); }
Changes values of the arguments' list.
Params:
  • argv – a new arguments' list.
Since:JRuby 1.5.0.
/** * Changes values of the arguments' list. * * @since JRuby 1.5.0. * * @param argv a new arguments' list. */
public void setArgv(String[] argv) { provider.getRubyInstanceConfig().setArgv(argv); }
Returns a script filename to run. The default value is "<script>".
Since:JRuby 1.5.0.
Returns:a script filename.
/** * Returns a script filename to run. The default value is "&lt;script&gt;". * * @since JRuby 1.5.0. * * @return a script filename. */
public String getScriptFilename() { return provider.getRubyInstanceConfig().getScriptFileName(); }
Changes a script filename to run. The default value is "<script>". Call this before you use put/get, runScriptlet, and parse methods so that initial configurations will work.
Params:
  • filename – a new script filename.
Since:JRuby 1.5.0.
/** * Changes a script filename to run. The default value is "&lt;script&gt;". * Call this before you use put/get, runScriptlet, and parse methods so that * initial configurations will work. * * @since JRuby 1.5.0. * * @param filename a new script filename. */
public void setScriptFilename(String filename) { provider.getRubyInstanceConfig().setScriptFileName(filename); }
Returns a record separator. The default value is "\n".
Since:JRuby 1.5.0.
Returns:a record separator.
/** * Returns a record separator. The default value is "\n". * * @since JRuby 1.5.0. * * @return a record separator. */
public String getRecordSeparator() { return provider.getRubyInstanceConfig().getRecordSeparator(); }
Changes a record separator to a given value. If "0" is given, the record separator goes to "\n\n", "777" goes to "\uFFFF", otherwise, an octal value of the given number. Call this before you use put/get, runScriptlet, and parse methods so that initial configurations will work.
Params:
  • separator – a new record separator value, "0" or "777"
Since:JRuby 1.5.0.
/** * Changes a record separator to a given value. If "0" is given, the record * separator goes to "\n\n", "777" goes to "\uFFFF", otherwise, an octal value * of the given number. * Call this before you use put/get, runScriptlet, and parse methods so that * initial configurations will work. * * @since JRuby 1.5.0. * * @param separator a new record separator value, "0" or "777" */
public void setRecordSeparator(String separator) { provider.getRubyInstanceConfig().setRecordSeparator(separator); }
Returns a value of KCode currently used. The default value is KCode.NONE.
Since:JRuby 1.5.0.
Returns:a KCode value.
/** * Returns a value of KCode currently used. The default value is KCode.NONE. * * @since JRuby 1.5.0. * * @return a KCode value. */
public KCode getKCode() { return provider.getRubyInstanceConfig().getKCode(); }
Changes a value of KCode to a given value. The value should be one of KCode.NONE, KCode.UTF8, KCode.SJIS, or KCode.EUC. The default value is KCode.NONE. Call this method before you use put/get, runScriptlet, and parse methods so that the given value will be used.
Params:
  • kcode – a new KCode value.
Since:JRuby 1.5.0.
/** * Changes a value of KCode to a given value. The value should be one of * KCode.NONE, KCode.UTF8, KCode.SJIS, or KCode.EUC. The default value is KCode.NONE. * Call this method before you use put/get, runScriptlet, and parse methods so that * the given value will be used. * * @since JRuby 1.5.0. * * @param kcode a new KCode value. */
public void setKCode(KCode kcode) { provider.getRubyInstanceConfig().setKCode(kcode); }
Set whether native code is enabled for this config. Disabling it also disables C extensions (@see RubyInstanceConfig#setCextEnabled).
Params:
  • b – new value indicating whether native code is enabled
See Also:
/** * Set whether native code is enabled for this config. Disabling it also * disables C extensions (@see RubyInstanceConfig#setCextEnabled). * * @see Options#NATIVE_ENABLED * * @param b new value indicating whether native code is enabled */
public void setNativeEnabled(boolean b) { provider.getRubyInstanceConfig().setNativeEnabled(b); }
Get whether native code is enabled for this config.
See Also:
  • NATIVE_ENABLED.NATIVE_ENABLED
Returns:true if native code is enabled; false otherwise.
/** * Get whether native code is enabled for this config. * * @see Options#NATIVE_ENABLED * * @return true if native code is enabled; false otherwise. */
public boolean isNativeEnabled() { return provider.getRubyInstanceConfig().isNativeEnabled(); }
Returns the value of n, which means that jitted methods are logged in every n methods. The default value is 0.
Since:JRuby 1.5.0.
Returns:a value that determines how often jitted methods are logged.
/** * Returns the value of n, which means that jitted methods are logged in * every n methods. The default value is 0. * * @since JRuby 1.5.0. * * @return a value that determines how often jitted methods are logged. */
public int getJitLogEvery() { return provider.getRubyInstanceConfig().getJitLogEvery(); }
Changes a value of n, so that jitted methods are logged in every n methods. The default value is 0. This value can be set by the jruby.jit.logEvery System property. Call this method before you use put/get, runScriptlet, and parse methods so that the configurations will work.
Params:
  • logEvery – a new number of methods.
Since:JRuby 1.5.0.
/** * Changes a value of n, so that jitted methods are logged in every n methods. * The default value is 0. This value can be set by the jruby.jit.logEvery System * property. * Call this method before you use put/get, runScriptlet, and parse methods so that * the configurations will work. * * @since JRuby 1.5.0. * * @param logEvery a new number of methods. */
public void setJitLogEvery(int logEvery) { provider.getRubyInstanceConfig().setJitLogEvery(logEvery); }
Returns a value of the threshold that determines whether jitted methods' call reached to the limit or not. The default value is -1 when security restriction is applied, or 50 when no security restriction exists.
Since:JRuby 1.5.0.
Returns:a value of the threshold.
/** * Returns a value of the threshold that determines whether jitted methods' * call reached to the limit or not. The default value is -1 when security * restriction is applied, or 50 when no security restriction exists. * * @since JRuby 1.5.0. * * @return a value of the threshold. */
public int getJitThreshold() { return provider.getRubyInstanceConfig().getJitThreshold(); }
Changes a value of the threshold that determines whether jitted methods' call reached to the limit or not. The default value is -1 when security restriction is applied, or 50 when no security restriction exists. This value can be set by jruby.jit.threshold System property. Call this method before you use put/get, runScriptlet, and parse methods so that the configurations will work.
Params:
  • threshold – a new value of the threshold.
Since:JRuby 1.5.0.
/** * Changes a value of the threshold that determines whether jitted methods' * call reached to the limit or not. The default value is -1 when security * restriction is applied, or 50 when no security restriction exists. This * value can be set by jruby.jit.threshold System property. * Call this method before you use put/get, runScriptlet, and parse methods so that * the configurations will work. * * @since JRuby 1.5.0. * * @param threshold a new value of the threshold. */
public void setJitThreshold(int threshold) { provider.getRubyInstanceConfig().setJitThreshold(threshold); }
Returns a value of a max class cache size. The default value is 0 when security restriction is applied, or 4096 when no security restriction exists.
Since:JRuby 1.5.0.
Returns:a value of a max class cache size.
/** * Returns a value of a max class cache size. The default value is 0 when * security restriction is applied, or 4096 when no security restriction exists. * * @since JRuby 1.5.0. * * @return a value of a max class cache size. */
public int getJitMax() { return provider.getRubyInstanceConfig().getJitMax(); }
Changes a value of a max class cache size. The default value is 0 when security restriction is applied, or 4096 when no security restriction exists. This value can be set by jruby.jit.max System property. Call this method before you use put/get, runScriptlet, and parse methods so that the configurations will work.
Params:
  • max – a new value of a max class cache size.
Since:JRuby 1.5.0.
/** * Changes a value of a max class cache size. The default value is 0 when * security restriction is applied, or 4096 when no security restriction exists. * This value can be set by jruby.jit.max System property. * Call this method before you use put/get, runScriptlet, and parse methods so that * the configurations will work. * * @since JRuby 1.5.0. * * @param max a new value of a max class cache size. */
public void setJitMax(int max) { provider.getRubyInstanceConfig().setJitMax(max); }
Returns a value of a max size of the bytecode generated by compiler. The default value is -1 when security restriction is applied, or 10000 when no security restriction exists.
Since:JRuby 1.5.0.
Returns:a value of a max size of the bytecode.
/** * Returns a value of a max size of the bytecode generated by compiler. The * default value is -1 when security restriction is applied, or 10000 when * no security restriction exists. * * @since JRuby 1.5.0. * * @return a value of a max size of the bytecode. */
public int getJitMaxSize() { return provider.getRubyInstanceConfig().getJitMaxSize(); }
Changes a value of a max size of the bytecode generated by compiler. The default value is -1 when security restriction is applied, or 10000 when no security restriction exists. This value can be set by jruby.jit.maxsize System property. Call this method before you use put/get, runScriptlet, and parse methods so that the configurations will work.
Params:
  • maxSize – a new value of a max size of the bytecode.
Since:JRuby 1.5.0.
/** * Changes a value of a max size of the bytecode generated by compiler. The * default value is -1 when security restriction is applied, or 10000 when * no security restriction exists. This value can be set by jruby.jit.maxsize * System property. * Call this method before you use put/get, runScriptlet, and parse methods so that * the configurations will work. * * @since JRuby 1.5.0. * * @param maxSize a new value of a max size of the bytecode. */
public void setJitMaxSize(int maxSize) { provider.getRubyInstanceConfig().setJitMaxSize(maxSize); }
Returns version information about JRuby and Ruby supported by this platform.
Returns:version information.
/** * Returns version information about JRuby and Ruby supported by this platform. * * @return version information. */
public String getSupportedRubyVersion() { return OutputStrings.getVersionString().trim(); }
Returns an array of values associated to a key.
Params:
  • key – is a key in a property file
Returns:values associated to the key
/** * Returns an array of values associated to a key. * * @param key is a key in a property file * @return values associated to the key */
public String[] getProperty(String key) { if (basicProperties.containsKey(key)) { return basicProperties.get(key); } return null; }
Returns a provider instance of LocalContextProvider. When users want to configure Ruby runtime, they can do by setting class loading paths, RubyInstanceConfig to the provider before they get Ruby runtime.
Returns:a provider of LocalContextProvider
/** * Returns a provider instance of {@link LocalContextProvider}. When users * want to configure Ruby runtime, they can do by setting class loading paths, * {@link org.jruby.RubyInstanceConfig} to the provider before they get Ruby * runtime. * * @return a provider of {@link LocalContextProvider} */
public LocalContextProvider getProvider() { return provider; }
Returns a Ruby runtime in one of LocalContextScope.
Deprecated:As of JRuby 1.5.0. Use getProvider().getRuntime() method instead.
Returns:Ruby runtime of a specified local context
/** * Returns a Ruby runtime in one of {@link LocalContextScope}. * * @deprecated As of JRuby 1.5.0. Use getProvider().getRuntime() method instead. * * @return Ruby runtime of a specified local context */
@Deprecated public Ruby getRuntime() { return provider.getRuntime(); }
Returns a variable map in one of LocalContextScope. Variables in this map is used to share between Java and Ruby. Map keys are Ruby's variable names, thus they must be valid Ruby names.
Returns:a variable map specific to the current thread
/** * Returns a variable map in one of {@link LocalContextScope}. Variables * in this map is used to share between Java and Ruby. Map keys are Ruby's * variable names, thus they must be valid Ruby names. * * @return a variable map specific to the current thread */
public BiVariableMap getVarMap() { return provider.getVarMap(); }
Returns a attribute map in one of LocalContextScope. Attributes in this map accept any key value pair, types of which are java.lang.Object. Ruby scripts do not look up this map.
Returns:an attribute map specific to the current thread
/** * Returns a attribute map in one of {@link LocalContextScope}. Attributes * in this map accept any key value pair, types of which are java.lang.Object. * Ruby scripts do not look up this map. * * @return an attribute map specific to the current thread */
public Map getAttributeMap() { return provider.getAttributeMap(); }
Returns an attribute value associated with the specified key in a attribute map. This is a short cut method of ScriptingContainer#getAttributeMap().get(key).
Params:
  • key – is the attribute key
Returns:value is a value associated to the specified key
/** * Returns an attribute value associated with the specified key in * a attribute map. This is a short cut method of * ScriptingContainer#getAttributeMap().get(key). * * @param key is the attribute key * @return value is a value associated to the specified key */
public Object getAttribute(Object key) { return provider.getAttributeMap().get(key); }
Associates the specified value with the specified key in a attribute map. If the map previously contained a mapping for the key, the old value is replaced. This is a short cut method of ScriptingContainer#getAttributeMap().put(key, value).
Params:
  • key – is a key that the specified value is to be associated with
  • value – is a value to be associated with the specified key
Returns:the previous value associated with key, or null if there was no mapping for key.
/** * Associates the specified value with the specified key in a * attribute map. If the map previously contained a mapping for the key, * the old value is replaced. This is a short cut method of * ScriptingContainer#getAttributeMap().put(key, value). * * @param key is a key that the specified value is to be associated with * @param value is a value to be associated with the specified key * @return the previous value associated with key, or null if there was no mapping for key. */
public Object setAttribute(Object key, Object value) { return provider.getAttributeMap().put(key, value); }
Removes the specified value with the specified key in a attribute map. If the map previously contained a mapping for the key, the old value is returned. This is a short cut method of ScriptingContainer#getAttributeMap().remove(key).
Params:
  • key – is a key that the specified value is to be removed from
Returns:the previous value associated with key, or null if there was no mapping for key.
/** * Removes the specified value with the specified key in a * attribute map. If the map previously contained a mapping for the key, * the old value is returned. This is a short cut method of * ScriptingContainer#getAttributeMap().remove(key). * * @param key is a key that the specified value is to be removed from * @return the previous value associated with key, or null if there was no mapping for key. */
public Object removeAttribute(Object key) { return provider.getAttributeMap().remove(key); }
Returns a value of the specified key in a top level of runtime or null if this map doesn't have a mapping for the key. The key must be a valid Ruby variable or constant name.
Params:
  • key – is a key whose associated value is to be returned
Returns:a value to which the specified key is mapped, or null if this map contains no mapping for the key
/** * Returns a value of the specified key in a top level of runtime or null * if this map doesn't have a mapping for the key. The key * must be a valid Ruby variable or constant name. * * @param key is a key whose associated value is to be returned * @return a value to which the specified key is mapped, or null if this * map contains no mapping for the key */
public Object get(String key) { return provider.getVarMap().get(key); }
Returns a value of a specified key in a specified receiver or null if a variable map doesn't have a mapping for the key in a given receiver. The key must be a valid Ruby variable or constant name. A global variable doesn't depend on the receiver.
Params:
  • receiver – a receiver to get the value from
  • key – is a key whose associated value is to be returned
Returns:a value to which the specified key is mapped, or null if this map contains no mapping for the key
/** * Returns a value of a specified key in a specified receiver or null if * a variable map doesn't have a mapping for the key in a given * receiver. The key must be a valid Ruby variable or constant name. A global * variable doesn't depend on the receiver. * * @param receiver a receiver to get the value from * @param key is a key whose associated value is to be returned * @return a value to which the specified key is mapped, or null if this * map contains no mapping for the key */
public Object get(Object receiver, String key) { return provider.getVarMap().get(receiver, key); }
Associates the specified value with the specified key in a variable map. This key-value pair is injected to a top level of runtime during evaluation. If the map previously contained a mapping for the key, the old value is replaced. The key must be a valid Ruby variable or constant name. It will be a top level variable or constant.
Params:
  • key – is a key that the specified value is to be associated with
  • value – is a value to be associated with the specified key
Returns:a previous value associated with a key, or null if there was no mapping for this key.
/** * Associates the specified value with the specified key in a * variable map. This key-value pair is injected to a top level of runtime * during evaluation. If the map previously contained a mapping for the key, * the old value is replaced. The key must be a valid Ruby variable or * constant name. It will be a top level variable or constant. * * @param key is a key that the specified value is to be associated with * @param value is a value to be associated with the specified key * @return a previous value associated with a key, or null if there was * no mapping for this key. */
public Object put(String key, Object value) { return provider.getVarMap().put(key, value); }
Associates the specified value with the specified key in a variable map. This key-value pair is injected to a given receiver during evaluation. If the map previously contained a mapping for the key, the old value is replaced. The key must be a valid Ruby variable or constant name. A given receiver limits the scope of a variable or constant. However, a global variable is accessible globally always.
Params:
  • receiver – a receiver to put the value in
  • key – is a key that the specified value is to be associated with
  • value – is a value to be associated with the specified key
Returns:a previous value associated with a key, or null if there was no mapping for this key.
/** * Associates the specified value with the specified key in a variable map. * This key-value pair is injected to a given receiver during evaluation. * If the map previously contained a mapping for the key, * the old value is replaced. The key must be a valid Ruby variable or * constant name. A given receiver limits the scope of a variable or constant. * However, a global variable is accessible globally always. * * @param receiver a receiver to put the value in * @param key is a key that the specified value is to be associated with * @param value is a value to be associated with the specified key * @return a previous value associated with a key, or null if there was * no mapping for this key. */
public Object put(Object receiver, String key, Object value) { return provider.getVarMap().put(receiver, key, value); }
Removes the specified Ruby variable with the specified variable name from a variable map and runtime top level. If the map previously contained a mapping for the key, the old value is returned. The key must be a valid Ruby variable name.
Params:
  • key – is a key that the specified value is to be associated with
Returns:a previous value associated with a key, or null if there was no mapping for this key.
/** * Removes the specified Ruby variable with the specified variable name from a * variable map and runtime top level. If the map previously contained a * mapping for the key, the old value is returned. The key must be a valid * Ruby variable name. * * @param key is a key that the specified value is to be associated with * @return a previous value associated with a key, or null if there was * no mapping for this key. */
public Object remove(String key) { return provider.getVarMap().remove(key); }
Removes the specified Ruby variable with the specified variable name in a variable map and given receiver. If the map previously contained a mapping for the key, the old value is returned. The key must be a valid Ruby variable name. This is a short cut method of ScriptingContainer#getVarMap().remove(key).
Params:
  • receiver – a receiver to remove the value from
  • key – is a key that the specified value is to be associated with
Returns:a previous value associated with a key, or null if there was no mapping for this key.
/** * Removes the specified Ruby variable with the specified variable name in a * variable map and given receiver. If the map previously contained a mapping for the key, * the old value is returned. The key must be a valid Ruby variable name. * This is a short cut method of ScriptingContainer#getVarMap().remove(key). * * @param receiver a receiver to remove the value from * @param key is a key that the specified value is to be associated with * @return a previous value associated with a key, or null if there was * no mapping for this key. */
public Object remove(Object receiver, String key) { return provider.getVarMap().removeFrom(receiver, key); }
Removes all of the mappings from this map. The map will be empty after this call returns. Ruby variables are also removed from Ruby instance. However, Ruby instance keep having global variable names with null value. This is a short cut method of ScriptingContainer#getVarMap().clear().
/** * Removes all of the mappings from this map. * The map will be empty after this call returns. Ruby variables are also * removed from Ruby instance. However, Ruby instance keep having global variable * names with null value. * This is a short cut method of ScriptingContainer#getVarMap().clear(). */
public void clear() { provider.getVarMap().clear(); }
Parses a script and return an object which can be run(). This allows the script to be parsed once and evaluated many times.
Params:
  • script – is a Ruby script to be parsed
  • lines – are linenumbers to display for parse errors and backtraces. This field is optional. Only the first argument is used for parsing. When no line number is specified, 0 is applied to.
Returns:an object which can be run
/** * Parses a script and return an object which can be run(). This allows * the script to be parsed once and evaluated many times. * * @param script is a Ruby script to be parsed * @param lines are linenumbers to display for parse errors and backtraces. * This field is optional. Only the first argument is used for parsing. * When no line number is specified, 0 is applied to. * @return an object which can be run */
public EmbedEvalUnit parse(String script, int... lines) { return runtimeAdapter.parse(script, lines); }
Parses a script given by a reader and return an object which can be run(). This allows the script to be parsed once and evaluated many times.
Params:
  • reader – is used to read a script from
  • filename – is used as in information, for example, appears in a stack trace of an exception
  • lines – are linenumbers to display for parse errors and backtraces. This field is optional. Only the first argument is used for parsing. When no line number is specified, 0 is applied to.
Returns:an object which can be run
/** * Parses a script given by a reader and return an object which can be run(). * This allows the script to be parsed once and evaluated many times. * * @param reader is used to read a script from * @param filename is used as in information, for example, appears in a stack trace * of an exception * @param lines are linenumbers to display for parse errors and backtraces. * This field is optional. Only the first argument is used for parsing. * When no line number is specified, 0 is applied to. * @return an object which can be run */
public EmbedEvalUnit parse(Reader reader, String filename, int... lines) { return runtimeAdapter.parse(reader, filename, lines); }
Parses a script read from a specified path and return an object which can be run(). This allows the script to be parsed once and evaluated many times.
Params:
  • type – is one of the types PathType defines
  • filename – is used as in information, for example, appears in a stack trace of an exception
  • lines – are linenumbers to display for parse errors and backtraces. This field is optional. Only the first argument is used for parsing. When no line number is specified, 0 is applied to.
Returns:an object which can be run
/** * Parses a script read from a specified path and return an object which can be run(). * This allows the script to be parsed once and evaluated many times. * * @param type is one of the types {@link PathType} defines * @param filename is used as in information, for example, appears in a stack trace * of an exception * @param lines are linenumbers to display for parse errors and backtraces. * This field is optional. Only the first argument is used for parsing. * When no line number is specified, 0 is applied to. * @return an object which can be run */
public EmbedEvalUnit parse(PathType type, String filename, int... lines) { return runtimeAdapter.parse(type, filename, lines); }
Parses a script given by a input stream and return an object which can be run(). This allows the script to be parsed once and evaluated many times.
Params:
  • istream – is an input stream to get a script from
  • filename – filename is used as in information, for example, appears in a stack trace of an exception
  • lines – are linenumbers to display for parse errors and backtraces. This field is optional. Only the first argument is used for parsing. When no line number is specified, 0 is applied to.
Returns:an object which can be run
/** * Parses a script given by a input stream and return an object which can be run(). * This allows the script to be parsed once and evaluated many times. * * @param istream is an input stream to get a script from * @param filename filename is used as in information, for example, appears in a stack trace * of an exception * @param lines are linenumbers to display for parse errors and backtraces. * This field is optional. Only the first argument is used for parsing. * When no line number is specified, 0 is applied to. * @return an object which can be run */
public EmbedEvalUnit parse(InputStream istream, String filename, int... lines) { return runtimeAdapter.parse(istream, filename, lines); }
Evaluates a script under the current scope (perhaps the top-level scope) and returns a result only if a script returns a value. Right after the parsing, the script is evaluated once.
Params:
  • script – is a Ruby script to get run
Returns:an evaluated result converted to a Java object
/** * Evaluates a script under the current scope (perhaps the top-level * scope) and returns a result only if a script returns a value. * Right after the parsing, the script is evaluated once. * * @param script is a Ruby script to get run * @return an evaluated result converted to a Java object */
public Object runScriptlet(String script) { EmbedEvalUnit unit = parse(script); return runUnit(unit); } private Object runUnit(EmbedEvalUnit unit) { if (unit == null) { return null; } IRubyObject ret = unit.run(); return JavaEmbedUtils.rubyToJava(ret); }
Evaluates a script read from a reader under the current scope (perhaps the top-level scope) and returns a result only if a script returns a value. Right after the parsing, the script is evaluated once.
Params:
  • reader – is used to read a script from
  • filename – is used as in information, for example, appears in a stack trace of an exception
Returns:an evaluated result converted to a Java object
/** * Evaluates a script read from a reader under the current scope * (perhaps the top-level scope) and returns a result only if a script * returns a value. Right after the parsing, the script is evaluated once. * * @param reader is used to read a script from * @param filename is used as in information, for example, appears in a stack trace * of an exception * @return an evaluated result converted to a Java object */
public Object runScriptlet(Reader reader, String filename) { EmbedEvalUnit unit = parse(reader, filename); return runUnit(unit); }
Evaluates a script read from a input stream under the current scope (perhaps the top-level scope) and returns a result only if a script returns a value. Right after the parsing, the script is evaluated once.
Params:
  • istream – is used to input a script from
  • filename – is used as in information, for example, appears in a stack trace of an exception
Returns:an evaluated result converted to a Java object
/** * Evaluates a script read from a input stream under the current scope * (perhaps the top-level scope) and returns a result only if a script * returns a value. Right after the parsing, the script is evaluated once. * * @param istream is used to input a script from * @param filename is used as in information, for example, appears in a stack trace * of an exception * @return an evaluated result converted to a Java object */
public Object runScriptlet(InputStream istream, String filename) { EmbedEvalUnit unit = parse(istream, filename); return runUnit(unit); }
Reads a script file from specified path and evaluates it under the current scope (perhaps the top-level scope) and returns a result only if a script returns a value. Right after the parsing, the script is evaluated once.
Params:
  • type – is one of the types PathType defines
  • filename – is used to read the script from and an information
Returns:an evaluated result converted to a Java object
/** * Reads a script file from specified path and evaluates it under the current * scope (perhaps the top-level scope) and returns a result only if a script * returns a value. Right after the parsing, the script is evaluated once. * * @param type is one of the types {@link PathType} defines * @param filename is used to read the script from and an information * @return an evaluated result converted to a Java object */
public Object runScriptlet(PathType type, String filename) { EmbedEvalUnit unit = parse(type, filename); return runUnit(unit); }
Returns an instance of EmbedRubyRuntimeAdapter for embedders to parse scripts.
Returns:an instance of EmbedRubyRuntimeAdapter.
/** * Returns an instance of {@link EmbedRubyRuntimeAdapter} for embedders to parse * scripts. * * @return an instance of {@link EmbedRubyRuntimeAdapter}. */
public EmbedRubyRuntimeAdapter newRuntimeAdapter() { return runtimeAdapter; }
Returns an instance of EmbedRubyObjectAdapter for embedders to invoke methods defined by Ruby. The script must be evaluated prior to a method call. In most cases, users don't need to use this method. ScriptingContainer's callMethods are the shortcut and work in the same way.
Example
        # calendar.rb
        require 'date'
        class Calendar
          def initialize;@today = DateTime.now;end
          def next_year;@today.year + 1;end
        end
        Calendar.new
        ScriptingContainer container = new ScriptingContainer();
        String filename =  "ruby/calendar.rb";
        Object receiver = instance.runScriptlet(PathType.CLASSPATH, filename);
        EmbedRubyObjectAdapter adapter = instance.newObjectAdapter();
        Integer result =
            (Integer) adapter.callMethod(receiver, "next_year", Integer.class);
        System.out.println("next year: " + result);
        System.out.println(instance.get("@today"));
Outputs:
    next year: 2010
    2009-05-19T17:46:44-04:00
Returns:an instance of EmbedRubyObjectAdapter
/** * Returns an instance of {@link EmbedRubyObjectAdapter} for embedders to invoke * methods defined by Ruby. The script must be evaluated prior to a method call. * In most cases, users don't need to use this method. ScriptingContainer's * callMethods are the shortcut and work in the same way. * * <pre>Example * # calendar.rb * require 'date' * class Calendar * def initialize;@today = DateTime.now;end * def next_year;@today.year + 1;end * end * Calendar.new * * * ScriptingContainer container = new ScriptingContainer(); * String filename = "ruby/calendar.rb"; * Object receiver = instance.runScriptlet(PathType.CLASSPATH, filename); * EmbedRubyObjectAdapter adapter = instance.newObjectAdapter(); * Integer result = * (Integer) adapter.callMethod(receiver, "next_year", Integer.class); * System.out.println("next year: " + result); * System.out.println(instance.get("@today")); * * Outputs: * next year: 2010 * 2009-05-19T17:46:44-04:00</pre> * * @return an instance of {@link EmbedRubyObjectAdapter} */
public EmbedRubyObjectAdapter newObjectAdapter() { return objectAdapter; }
Executes a method defined in Ruby script. This method is used when a Ruby method does not have any argument.
Params:
  • receiver – is an instance that will receive this method call. Ruby's self object will be used if no appropriate receiver is given.
  • methodName – is a method name to be called
  • args – is an array of method arguments
Returns:an instance of requested Java type
/** * Executes a method defined in Ruby script. This method is used when a Ruby * method does not have any argument. * * @param receiver is an instance that will receive this method call. * Ruby's self object will be used if no appropriate receiver * is given. * @param methodName is a method name to be called * @param args is an array of method arguments * @return an instance of requested Java type */
public Object callMethod(Object receiver, String methodName, Object... args) { return objectAdapter.callMethod(receiver, methodName, args); }
Executes a method defined in Ruby script. This method is used when a Ruby method does not have any argument.
Params:
  • receiver – is an instance that will receive this method call Ruby's self object will be used if no appropriate receiver is given.
  • methodName – is a method name to be called
  • block – is a block to be executed in this method
  • args – is an array of method arguments
Returns:an instance of requested Java type
/** * Executes a method defined in Ruby script. This method is used when a Ruby * method does not have any argument. * * @param receiver is an instance that will receive this method call * Ruby's self object will be used if no appropriate receiver * is given. * @param methodName is a method name to be called * @param block is a block to be executed in this method * @param args is an array of method arguments * @return an instance of requested Java type */
public Object callMethod(Object receiver, String methodName, Block block, Object... args) { return objectAdapter.callMethod(receiver, methodName, block, args); }
Executes a method defined in Ruby script. This method is used when a Ruby method does not have any argument.
Params:
  • receiver – is an instance that will receive this method call. Ruby's self object will be used if no appropriate receiver is given.
  • methodName – is a method name to be called
  • returnType – is the type we want it to convert to
Returns:an instance of requested Java type
/** * Executes a method defined in Ruby script. This method is used when a Ruby * method does not have any argument. * * @param receiver is an instance that will receive this method call. * Ruby's self object will be used if no appropriate receiver * is given. * @param methodName is a method name to be called * @param returnType is the type we want it to convert to * @return an instance of requested Java type */
public <T> T callMethod(Object receiver, String methodName, Class<T> returnType) { return objectAdapter.callMethod(receiver, methodName, returnType); }
Executes a method defined in Ruby script. This method is used when a Ruby method have only one argument.
Params:
  • receiver – is an instance that will receive this method call. Ruby's self object will be used if no appropriate receiver is given.
  • methodName – is a method name to be called
  • singleArg – is an method argument
  • returnType – returnType is the type we want it to convert to
Returns:an instance of requested Java type
/** * Executes a method defined in Ruby script. This method is used when a Ruby * method have only one argument. * * @param receiver is an instance that will receive this method call. * Ruby's self object will be used if no appropriate receiver * is given. * @param methodName is a method name to be called * @param singleArg is an method argument * @param returnType returnType is the type we want it to convert to * @return an instance of requested Java type */
public <T> T callMethod(Object receiver, String methodName, Object singleArg, Class<T> returnType) { return objectAdapter.callMethod(receiver, methodName, singleArg, returnType); }
Executes a method defined in Ruby script. This method is used when a Ruby method have multiple arguments.
Params:
  • receiver – is an instance that will receive this method call. Ruby's self object will be used if no appropriate receiver is given.
  • methodName – is a method name to be called
  • args – is an array of method arguments
  • returnType – is the type we want it to convert to
Returns:an instance of requested Java type
/** * Executes a method defined in Ruby script. This method is used when a Ruby * method have multiple arguments. * * @param receiver is an instance that will receive this method call. * Ruby's self object will be used if no appropriate receiver * is given. * @param methodName is a method name to be called * @param args is an array of method arguments * @param returnType is the type we want it to convert to * @return an instance of requested Java type */
public <T> T callMethod(Object receiver, String methodName, Object[] args, Class<T> returnType) { return objectAdapter.callMethod(receiver, methodName, args, returnType); }
Executes a method defined in Ruby script. This method is used when a Ruby method have multiple arguments, one of which is a block.
Params:
  • receiver – is an instance that will receive this method call. Ruby's self object will be used if no appropriate receiver is given.
  • methodName – is a method name to be called
  • args – is an array of method arguments except a block
  • block – is a block to be executed in this method
  • returnType – is the type we want it to convert to
Returns:an instance of requested Java type
/** * Executes a method defined in Ruby script. This method is used when a Ruby * method have multiple arguments, one of which is a block. * * @param receiver is an instance that will receive this method call. * Ruby's self object will be used if no appropriate receiver * is given. * @param methodName is a method name to be called * @param args is an array of method arguments except a block * @param block is a block to be executed in this method * @param returnType is the type we want it to convert to * @return an instance of requested Java type */
public <T> T callMethod(Object receiver, String methodName, Object[] args, Block block, Class<T> returnType) { return objectAdapter.callMethod(receiver, methodName, args, block, returnType); }
Executes a method defined in Ruby script. This method is used when a Ruby method does not have any argument, and users want to inject Ruby's local variables' values from Java.
Params:
  • receiver – is an instance that will receive this method call. Ruby's self object will be used if no appropriate receiver is given.
  • methodName – is a method name to be called
  • returnType – is the type we want it to convert to
  • unit – is parsed unit
Returns:an instance of requested Java type
/** * Executes a method defined in Ruby script. This method is used when a Ruby * method does not have any argument, and users want to inject Ruby's local * variables' values from Java. * * @param receiver is an instance that will receive this method call. * Ruby's self object will be used if no appropriate receiver * is given. * @param methodName is a method name to be called * @param returnType is the type we want it to convert to * @param unit is parsed unit * @return an instance of requested Java type */
public <T> T callMethod(Object receiver, String methodName, Class<T> returnType, EmbedEvalUnit unit) { return objectAdapter.callMethod(receiver, methodName, returnType, unit); }
Executes a method defined in Ruby script. This method is used when a Ruby method have multiple arguments, and users want to inject Ruby's local variables' values from Java.
Params:
  • receiver – is an instance that will receive this method call. Ruby's self object will be used if no appropriate receiver is given.
  • methodName – is a method name to be called
  • args – is an array of method arguments
  • returnType – is the type we want it to convert to
  • unit – is parsed unit
Returns:an instance of requested Java type
/** * Executes a method defined in Ruby script. This method is used when a Ruby * method have multiple arguments, and users want to inject Ruby's local * variables' values from Java. * * @param receiver is an instance that will receive this method call. * Ruby's self object will be used if no appropriate receiver * is given. * @param methodName is a method name to be called * @param args is an array of method arguments * @param returnType is the type we want it to convert to * @param unit is parsed unit * @return an instance of requested Java type */
public <T> T callMethod(Object receiver, String methodName, Object[] args, Class<T> returnType, EmbedEvalUnit unit) { return objectAdapter.callMethod(receiver, methodName, args, returnType, unit); }
Executes a method defined in Ruby script. This method is used when a Ruby method have multiple arguments, one of which is a block, and users want to inject Ruby's local variables' values from Java.
Params:
  • receiver – is an instance that will receive this method call. Ruby's self object will be used if no appropriate receiver is given.
  • methodName – is a method name to be called
  • args – is an array of method arguments except a block
  • block – is a block to be executed in this method
  • returnType – is the type we want it to convert to
  • unit – is parsed unit
Returns:is the type we want it to convert to
/** * Executes a method defined in Ruby script. This method is used when a Ruby * method have multiple arguments, one of which is a block, and users want to * inject Ruby's local variables' values from Java. * * @param receiver is an instance that will receive this method call. * Ruby's self object will be used if no appropriate receiver * is given. * @param methodName is a method name to be called * @param args is an array of method arguments except a block * @param block is a block to be executed in this method * @param returnType is the type we want it to convert to * @param unit is parsed unit * @return is the type we want it to convert to */
public <T> T callMethod(Object receiver, String methodName, Object[] args, Block block, Class<T> returnType, EmbedEvalUnit unit) { return objectAdapter.callMethod(receiver, methodName, args, block, returnType, unit); }
Params:
  • receiver – is an instance that will receive this method call. Ruby's self object will be used if no appropriate receiver is given.
  • args – is an array of method arguments
  • returnType – is the type we want it to convert to
Returns:is the type we want it to convert to
/** * * @param receiver is an instance that will receive this method call. * Ruby's self object will be used if no appropriate receiver * is given. * @param args is an array of method arguments * @param returnType is the type we want it to convert to * @return is the type we want it to convert to */
public <T> T callSuper(Object receiver, Object[] args, Class<T> returnType) { return objectAdapter.callSuper(receiver, args, returnType); }
Params:
  • receiver – is an instance that will receive this method call. Ruby's self object will be used if no appropriate receiver is given.
  • args – is an array of method arguments except a block
  • block – is a block to be executed in this method
  • returnType – is the type we want it to convert to
Returns:is the type we want it to convert to
/** * * @param receiver is an instance that will receive this method call. * Ruby's self object will be used if no appropriate receiver * is given. * @param args is an array of method arguments except a block * @param block is a block to be executed in this method * @param returnType is the type we want it to convert to * @return is the type we want it to convert to */
public <T> T callSuper(Object receiver, Object[] args, Block block, Class<T> returnType) { return objectAdapter.callSuper(receiver, args, block, returnType); }
Executes a method defined in Ruby script. This method is used when a Ruby method does not have any argument.
Params:
  • returnType – is the type we want it to convert to
  • receiver – is an instance that will receive this method call. The receiver can be null or other Java objects as well as RubyObject. The null will be converted to RubyNil. Java objects will be wrapped in RubyObject.
  • methodName – is a method name to be called
  • args – is an array of method arguments
Returns:an instance of requested Java type
/** * Executes a method defined in Ruby script. This method is used when a Ruby * method does not have any argument. * * @param returnType is the type we want it to convert to * @param receiver is an instance that will receive this method call. The receiver * can be null or other Java objects as well as RubyObject. * The null will be converted to RubyNil. Java objects will be * wrapped in RubyObject. * @param methodName is a method name to be called * @param args is an array of method arguments * @return an instance of requested Java type */
public <T> T runRubyMethod(Class<T> returnType, Object receiver, String methodName, Object... args) { return objectAdapter.runRubyMethod(returnType, receiver, methodName, null, args); }
Executes a method defined in Ruby script. This method is used when a Ruby method does not have any argument.
Params:
  • returnType – is the type we want it to convert to
  • receiver – is an instance that will receive this method call. The receiver can be null or other Java objects as well as RubyObject. The null will be converted to RubyNil. Java objects will be wrapped in RubyObject.
  • methodName – is a method name to be called
  • block – is an optional Block object. Send null for no block.
  • args – is an array of method arguments
Returns:an instance of requested Java type
/** * Executes a method defined in Ruby script. This method is used when a Ruby * method does not have any argument. * * @param returnType is the type we want it to convert to * @param receiver is an instance that will receive this method call. The receiver * can be null or other Java objects as well as RubyObject. * The null will be converted to RubyNil. Java objects will be * wrapped in RubyObject. * @param methodName is a method name to be called * @param block is an optional Block object. Send null for no block. * @param args is an array of method arguments * @return an instance of requested Java type */
public <T> T runRubyMethod(Class<T> returnType, Object receiver, String methodName, Block block, Object... args) { return objectAdapter.runRubyMethod(returnType, receiver, methodName, block, args); }
Returns an instance of a requested interface type. An implementation of the requested interface is done by a Ruby script, which has been evaluated before getting the instance. In most cases, users don't need to use this method. ScriptingContainer's runScriptlet method returns an instance of the interface type that is implemented by Ruby.
Example
Interface
    //QuadraticFormula.java
    package org.jruby.embed;
    import java.util.List;
    public interface QuadraticFormula {
        List solve(int a, int b, int c) throws Exception;
    }
Implementation
    #quadratic_formula.rb
    def solve(a, b, c)
      v = b ** 2 - 4 * a * c
      if v < 0: raise RangeError end
      s0 = ((-1)*b - Math.sqrt(v))/(2*a)
      s1 = ((-1)*b + Math.sqrt(v))/(2*a)
      return s0, s1
    end
Usage
    ScriptingContainer container = new ScriptingContainer();
    String filename = "ruby/quadratic_formula_class.rb";
    Object receiver = container.runScriptlet(PathType.CLASSPATH, filename);
    QuadraticFormula qf = container.getInstance(receiver, QuadraticFormula.class);
    try {
         List solutions = qf.solve(1, -2, -13);
         printSolutions(solutions);
         solutions = qf.solve(1, -2, 13);
         for (double s : solutions) {
             System.out.print(s + ", ");
         }
    } catch (Exception e) {
         e.printStackTrace();
    }
Output
    -2.7416573867739413, 4.741657386773941,
Params:
  • receiver – is an instance that implements the interface
  • clazz – is a requested interface
Returns:an instance of a requested interface type
/** * Returns an instance of a requested interface type. An implementation of * the requested interface is done by a Ruby script, which has been evaluated * before getting the instance. * In most cases, users don't need to use this method. ScriptingContainer's * runScriptlet method returns an instance of the interface type that is * implemented by Ruby. * * <pre>Example * Interface * //QuadraticFormula.java * package org.jruby.embed; * import java.util.List; * public interface QuadraticFormula { * List solve(int a, int b, int c) throws Exception; * } * * Implementation * #quadratic_formula.rb * def solve(a, b, c) * v = b ** 2 - 4 * a * c * if v < 0: raise RangeError end * s0 = ((-1)*b - Math.sqrt(v))/(2*a) * s1 = ((-1)*b + Math.sqrt(v))/(2*a) * return s0, s1 * end * * Usage * ScriptingContainer container = new ScriptingContainer(); * String filename = "ruby/quadratic_formula_class.rb"; * Object receiver = container.runScriptlet(PathType.CLASSPATH, filename); * QuadraticFormula qf = container.getInstance(receiver, QuadraticFormula.class); * try { * List<Double> solutions = qf.solve(1, -2, -13); * printSolutions(solutions); * solutions = qf.solve(1, -2, 13); * for (double s : solutions) { * System.out.print(s + ", "); * } * } catch (Exception e) { * e.printStackTrace(); * } * * Output * -2.7416573867739413, 4.741657386773941, * </pre> * * * @param receiver is an instance that implements the interface * @param clazz is a requested interface * @return an instance of a requested interface type */
public <T> T getInstance(Object receiver, Class<T> clazz) { return interfaceAdapter.getInstance(receiver, clazz); }
Replaces a standard input by a specified reader
Params:
  • reader – is a reader to be set
/** * Replaces a standard input by a specified reader * * @param reader is a reader to be set */
public void setReader(Reader reader) { if (reader == null) { return; } Map map = getAttributeMap(); if (map.containsKey(AttributeName.READER)) { Reader old = (Reader) map.get(AttributeName.READER); if (old == reader) { return; } } map.put(AttributeName.READER, reader); InputStream istream = new ReaderInputStream(reader); Ruby runtime = provider.getRuntime(); RubyIO io = new RubyIO(runtime, istream); io.getOpenFile().setSync(true); runtime.defineVariable(new InputGlobalVariable(runtime, "$stdin", io), GlobalVariable.Scope.GLOBAL); runtime.getObject().storeConstant("STDIN", io); }
Returns a reader set in an attribute map.
Returns:a reader in an attribute map
/** * Returns a reader set in an attribute map. * * @return a reader in an attribute map */
public Reader getReader() { Map map = getAttributeMap(); if (map.containsKey(AttributeName.READER)) { return (Reader) map.get(AttributeName.READER); } return null; }
Returns an input stream that Ruby runtime has. The stream is set when Ruby runtime is initialized.
Deprecated:As of JRuby 1.5.0, replaced by getInput().
Returns:an input stream that Ruby runtime has.
/** * Returns an input stream that Ruby runtime has. The stream is set when * Ruby runtime is initialized. * * @deprecated As of JRuby 1.5.0, replaced by getInput(). * * @return an input stream that Ruby runtime has. */
@Deprecated public InputStream getIn() { return getInput(); }
Replaces a standard output by a specified writer.
Params:
  • writer – is a writer to be set
/** * Replaces a standard output by a specified writer. * * @param writer is a writer to be set */
public void setWriter(Writer writer) { if (writer == null) { return; } Map map = getAttributeMap(); if (map.containsKey(AttributeName.WRITER)) { Writer old = (Writer) map.get(AttributeName.WRITER); if (old == writer) { return; } } map.put(AttributeName.WRITER, writer); PrintStream pstream = new PrintStream(new WriterOutputStream(writer)); setOutputStream(pstream); } private void setOutputStream(PrintStream pstream) { if (pstream == null) { return; } Ruby runtime = provider.getRuntime(); RubyIO io = new RubyIO(runtime, pstream); io.getOpenFile().setSync(true); runtime.defineVariable(new OutputGlobalVariable(runtime, "$stdout", io), GlobalVariable.Scope.GLOBAL); runtime.getObject().storeConstant("STDOUT", io); runtime.getGlobalVariables().alias("$>", "$stdout"); runtime.getGlobalVariables().alias("$defout", "$stdout"); } public void resetWriter() { PrintStream pstream = provider.getRubyInstanceConfig().getOutput(); setOutputStream(pstream); }
Returns a writer set in an attribute map.
Returns:a writer in a attribute map
/** * Returns a writer set in an attribute map. * * @return a writer in a attribute map */
public Writer getWriter() { Map map = getAttributeMap(); if (map.containsKey(AttributeName.WRITER)) { return (Writer) map.get(AttributeName.WRITER); } return null; }
Returns an output stream that Ruby runtime has. The stream is set when Ruby runtime is initialized.
Deprecated:As of JRuby 1.5.0, replaced by getOutput().
Returns:an output stream that Ruby runtime has
/** * Returns an output stream that Ruby runtime has. The stream is set when * Ruby runtime is initialized. * * @deprecated As of JRuby 1.5.0, replaced by getOutput(). * * @return an output stream that Ruby runtime has */
@Deprecated public PrintStream getOut() { return getOutput(); }
Replaces a standard error by a specified writer.
Params:
  • errorWriter – is a writer to be set
/** * Replaces a standard error by a specified writer. * * @param errorWriter is a writer to be set */
public void setErrorWriter(Writer errorWriter) { if (errorWriter == null) { return; } Map map = getAttributeMap(); if (map.containsKey(AttributeName.ERROR_WRITER)) { Writer old = (Writer) map.get(AttributeName.ERROR_WRITER); if (old == errorWriter) { return; } } map.put(AttributeName.ERROR_WRITER, errorWriter); PrintStream pstream = new PrintStream(new WriterOutputStream(errorWriter)); setErrorStream(pstream); } private void setErrorStream(PrintStream error) { if (error == null) { return; } Ruby runtime = provider.getRuntime(); RubyIO io = new RubyIO(runtime, error); io.getOpenFile().setSync(true); runtime.defineVariable(new OutputGlobalVariable(runtime, "$stderr", io), GlobalVariable.Scope.GLOBAL); runtime.getObject().storeConstant("STDERR", io); runtime.getGlobalVariables().alias("$deferr", "$stderr"); } public void resetErrorWriter() { PrintStream error = provider.getRubyInstanceConfig().getError(); setErrorStream(error); }
Returns an error writer set in an attribute map.
Returns:an error writer in a attribute map
/** * Returns an error writer set in an attribute map. * * @return an error writer in a attribute map */
public Writer getErrorWriter() { Map map = getAttributeMap(); if (map.containsKey(AttributeName.ERROR_WRITER)) { return (Writer) map.get(AttributeName.ERROR_WRITER); } return null; }
Returns an error output stream that Ruby runtime has. The stream is set when Ruby runtime is initialized.
Deprecated:As of JRuby 1.5.0, Replaced by getError()
Returns:an error output stream that Ruby runtime has
/** * Returns an error output stream that Ruby runtime has. The stream is set when * Ruby runtime is initialized. * * @deprecated As of JRuby 1.5.0, Replaced by getError() * * @return an error output stream that Ruby runtime has */
@Deprecated public PrintStream getErr() { return getError(); }
Cleanly shut down this ScriptingContainer and any JRuby resources it holds. All ScriptingContainer instances should be terminated when you are done with them, rather then leaving them for GC to finalize.
Since:JRuby 1.5.0
/** * Cleanly shut down this ScriptingContainer and any JRuby resources it holds. * All ScriptingContainer instances should be terminated when you are done with * them, rather then leaving them for GC to finalize. * * @since JRuby 1.5.0 */
public void terminate() { LocalContextProvider provider = getProvider(); if (provider.isRuntimeInitialized()) { provider.getRuntime().tearDown(false); provider.getRuntime().releaseClassLoader(); } provider.terminate(); }
Ensure this ScriptingContainer instance is terminated when nobody holds any references to it (and GC wants to reclaim it). Note that org.jruby.embed.LocalContextScope::SINGLETON containers will not terminate on GC.
Throws:
Since:JRuby 1.6.0
/** * Ensure this ScriptingContainer instance is terminated when nobody holds any * references to it (and GC wants to reclaim it). * * Note that {@link org.jruby.embed.LocalContextScope::SINGLETON} containers will not terminate on GC. * * @throws Throwable * * @since JRuby 1.6.0 */
@Override public void finalize() throws Throwable { super.finalize(); // singleton containers share global runtime, and should not tear it down if (scope != LocalContextScope.SINGLETON) terminate(); }
Force dynamically-loaded Java classes to load first from the classloader provided by JRuby before searching parent classloaders. This can be used to isolated dependency in different runtimes from each other and from parent classloaders. The default behavior is to defer to parent classloaders if they can provide the requested classes. Note that if different versions of a library are loaded by both a parent classloader and the JRuby classloader, those classess would be incompatible with each other and with other library objects from the opposing classloader.
Params:
  • classloaderDelegate – set whether prefer the JRuby classloader to delegate first to the parent classloader when dynamically loading classes
Since:JRuby 9.0.0.0
/** * Force dynamically-loaded Java classes to load first from the classloader provided by * JRuby before searching parent classloaders. This can be used to isolated dependency * in different runtimes from each other and from parent classloaders. The default * behavior is to defer to parent classloaders if they can provide the requested * classes. * * Note that if different versions of a library are loaded by both a parent * classloader and the JRuby classloader, those classess would be incompatible * with each other and with other library objects from the opposing classloader. * * @param classloaderDelegate set whether prefer the JRuby classloader to delegate first * to the parent classloader when dynamically loading classes * @since JRuby 9.0.0.0 */
public void setClassloaderDelegate(boolean classloaderDelegate) { getProvider().getRubyInstanceConfig().setClassloaderDelegate(classloaderDelegate); }
Retrieve the self-first classloader setting.
See Also:
  • setClassloaderDelegate.setClassloaderDelegate(boolean)
/** * Retrieve the self-first classloader setting. * * @see ScriptingContainer#setClassloaderDelegate(boolean) */
public boolean getClassloaderDelegate() { return getProvider().getRubyInstanceConfig().isClassloaderDelegate(); }
add the given classloader to the LOAD_PATH and GEM_PATH
Params:
  • classloader –
/** * add the given classloader to the LOAD_PATH and GEM_PATH * @param classloader */
public void addClassLoader(ClassLoader classLoader) { getProvider().getRubyInstanceConfig().addLoader(classLoader); }
add the given classloader to the LOAD_PATH
Params:
  • classloader –
/** * add the given classloader to the LOAD_PATH * @param classloader */
@Deprecated public void addLoadPath(ClassLoader classloader) { addLoadPath(createUri(classloader, "/.jrubydir")); } @Deprecated protected void addLoadPath(String uri) { runScriptlet( "$LOAD_PATH << '" + uri + "' unless $LOAD_PATH.member?( '" + uri + "' )" ); }
add the given classloader to the GEM_PATH
Params:
  • classloader –
/** * add the given classloader to the GEM_PATH * @param classloader */
@Deprecated public void addGemPath(ClassLoader classloader) { addGemPath(createUri(classloader, "/specifications/.jrubydir")); } private String createUri(ClassLoader cl, String ref) { URL url = cl.getResource( ref ); if ( url == null && ref.startsWith( "/" ) ) { url = cl.getResource( ref.substring( 1 ) ); } if ( url == null ) { throw new RuntimeException( "reference " + ref + " not found on classloader " + cl ); } return "uri:" + url.toString().replaceFirst( ref + "$", "" ); } protected void addGemPath(String uri) { runScriptlet( "require 'rubygems/defaults/jruby';Gem::Specification.add_dir '" + uri + "' unless Gem::Specification.dirs.member?( '" + uri + "' )" ); } @Deprecated public org.jruby.CompatVersion getCompatVersion() { return provider.getRubyInstanceConfig().getCompatVersion(); } @Deprecated public void setCompatVersion(org.jruby.CompatVersion version) { } }