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package javax.xml.stream;

import com.sun.xml.internal.stream.XMLOutputFactoryImpl;
import javax.xml.transform.Result;

Defines an abstract implementation of a factory for getting XMLEventWriters and XMLStreamWriters. The following table defines the standard properties of this specification. Each property varies in the level of support required by each implementation. The level of support required is described in the 'Required' column.
Configuration Parameters
Property Name Behavior Return type Default Value Required
javax.xml.stream.isRepairingNamespacesdefaults prefixes on the output sideBooleanFalseYes

The following paragraphs describe the namespace and prefix repair algorithm:

The property can be set with the following code line: setProperty("javax.xml.stream.isRepairingNamespaces", new Boolean(true|false));

This property specifies that the writer default namespace prefix declarations. The default value is false.

If a writer isRepairingNamespaces it will create a namespace declaration on the current StartElement for any attribute that does not currently have a namespace declaration in scope. If the StartElement has a uri but no prefix specified a prefix will be assigned, if the prefix has not been declared in a parent of the current StartElement it will be declared on the current StartElement. If the defaultNamespace is bound and in scope and the default namespace matches the URI of the attribute or StartElement QName no prefix will be assigned.

If an element or attribute name has a prefix, but is not bound to any namespace URI, then the prefix will be removed during serialization.

If element and/or attribute names in the same start or empty-element tag are bound to different namespace URIs and are using the same prefix then the element or the first occurring attribute retains the original prefix and the following attributes have their prefixes replaced with a new prefix that is bound to the namespace URIs of those attributes.

If an element or attribute name uses a prefix that is bound to a different URI than that inherited from the namespace context of the parent of that element and there is no namespace declaration in the context of the current element then such a namespace declaration is added.

If an element or attribute name is bound to a prefix and there is a namespace declaration that binds that prefix to a different URI then that namespace declaration is either removed if the correct mapping is inherited from the parent context of that element, or changed to the namespace URI of the element or attribute using that prefix.

Author:Copyright (c) 2009, 2015 by Oracle Corporation. All Rights Reserved.
See Also:
Version:1.2
Since:1.6
/** * Defines an abstract implementation of a factory for * getting XMLEventWriters and XMLStreamWriters. * * The following table defines the standard properties of this specification. * Each property varies in the level of support required by each implementation. * The level of support required is described in the 'Required' column. * * <table class="striped"> * <caption>Configuration Parameters</caption> * <thead> * <tr> * <th scope="col">Property Name</th> * <th scope="col">Behavior</th> * <th scope="col">Return type</th> * <th scope="col">Default Value</th> * <th scope="col">Required</th> * </tr> * </thead> * <tbody> * <tr><th scope="row">javax.xml.stream.isRepairingNamespaces</th><td>defaults prefixes * on the output side</td><td>Boolean</td><td>False</td><td>Yes</td></tr> * </tbody> * </table> * * <p>The following paragraphs describe the namespace and prefix repair algorithm: * * <p>The property can be set with the following code line: * {@code setProperty("javax.xml.stream.isRepairingNamespaces", new Boolean(true|false));} * * <p>This property specifies that the writer default namespace prefix declarations. * The default value is false. * * <p>If a writer isRepairingNamespaces it will create a namespace declaration * on the current StartElement for * any attribute that does not * currently have a namespace declaration in scope. If the StartElement * has a uri but no prefix specified a prefix will be assigned, if the prefix * has not been declared in a parent of the current StartElement it will be declared * on the current StartElement. If the defaultNamespace is bound and in scope * and the default namespace matches the URI of the attribute or StartElement * QName no prefix will be assigned. * * <p>If an element or attribute name has a prefix, but is not * bound to any namespace URI, then the prefix will be removed * during serialization. * * <p>If element and/or attribute names in the same start or * empty-element tag are bound to different namespace URIs and * are using the same prefix then the element or the first * occurring attribute retains the original prefix and the * following attributes have their prefixes replaced with a * new prefix that is bound to the namespace URIs of those * attributes. * * <p>If an element or attribute name uses a prefix that is * bound to a different URI than that inherited from the * namespace context of the parent of that element and there * is no namespace declaration in the context of the current * element then such a namespace declaration is added. * * <p>If an element or attribute name is bound to a prefix and * there is a namespace declaration that binds that prefix * to a different URI then that namespace declaration is * either removed if the correct mapping is inherited from * the parent context of that element, or changed to the * namespace URI of the element or attribute using that prefix. * * @version 1.2 * @author Copyright (c) 2009, 2015 by Oracle Corporation. All Rights Reserved. * @see XMLInputFactory * @see XMLEventWriter * @see XMLStreamWriter * @since 1.6 */
public abstract class XMLOutputFactory {
Property used to set prefix defaulting on the output side
/** * Property used to set prefix defaulting on the output side */
public static final String IS_REPAIRING_NAMESPACES= "javax.xml.stream.isRepairingNamespaces"; static final String DEFAULIMPL = "com.sun.xml.internal.stream.XMLOutputFactoryImpl"; protected XMLOutputFactory(){}
Creates a new instance of the XMLOutputFactory builtin system-default implementation.
Returns:A new instance of the XMLOutputFactory builtin system-default implementation.
Since:9
/** * Creates a new instance of the {@code XMLOutputFactory} builtin * system-default implementation. * * @return A new instance of the {@code XMLOutputFactory} builtin * system-default implementation. * * @since 9 */
public static XMLOutputFactory newDefaultFactory() { return new XMLOutputFactoryImpl(); }
Creates a new instance of the factory in exactly the same manner as the newFactory() method.
Throws:
/** * Creates a new instance of the factory in exactly the same manner as the * {@link #newFactory()} method. * @throws FactoryConfigurationError if an instance of this factory cannot be loaded */
public static XMLOutputFactory newInstance() throws FactoryConfigurationError { return FactoryFinder.find(XMLOutputFactory.class, DEFAULIMPL); }
Create a new instance of the factory.

This static method creates a new factory instance. This method uses the following ordered lookup procedure to determine the XMLOutputFactory implementation class to load:

  • Use the javax.xml.stream.XMLOutputFactory system property.
  • Use the configuration file "stax.properties". The file is in standard Properties format and typically located in the conf directory of the Java installation. It contains the fully qualified name of the implementation class with the key being the system property defined above.

    The stax.properties file is read only once by the implementation and its values are then cached for future use. If the file does not exist when the first attempt is made to read from it, no further attempts are made to check for its existence. It is not possible to change the value of any property in stax.properties after it has been read for the first time.

    Use the jaxp configuration file "jaxp.properties". The file is in the same format as stax.properties and will only be read if stax.properties does not exist.

  • Use the service-provider loading facility, defined by the ServiceLoader class, to attempt to locate and load an implementation of the service using the default loading mechanism: the service-provider loading facility will use the current thread's context class loader to attempt to load the service. If the context class loader is null, the system class loader will be used.

  • Otherwise, the system-default implementation is returned.

Once an application has obtained a reference to a XMLOutputFactory it can use the factory to configure and obtain stream instances.

Throws:
/** * Create a new instance of the factory. * <p> * This static method creates a new factory instance. This method uses the * following ordered lookup procedure to determine the XMLOutputFactory * implementation class to load: * <ul> * <li> * Use the javax.xml.stream.XMLOutputFactory system property. * </li> * <li> * <p> * Use the configuration file "stax.properties". The file is in standard * {@link java.util.Properties} format and typically located in the * {@code conf} directory of the Java installation. It contains the fully qualified * name of the implementation class with the key being the system property * defined above. * * <p> * The stax.properties file is read only once by the implementation * and its values are then cached for future use. If the file does not exist * when the first attempt is made to read from it, no further attempts are * made to check for its existence. It is not possible to change the value * of any property in stax.properties after it has been read for the first time. * * <p> * Use the jaxp configuration file "jaxp.properties". The file is in the same * format as stax.properties and will only be read if stax.properties does * not exist. * </li> * <li> * <p> * Use the service-provider loading facility, defined by the * {@link java.util.ServiceLoader} class, to attempt to locate and load an * implementation of the service using the {@linkplain * java.util.ServiceLoader#load(java.lang.Class) default loading mechanism}: * the service-provider loading facility will use the {@linkplain * java.lang.Thread#getContextClassLoader() current thread's context class loader} * to attempt to load the service. If the context class * loader is null, the {@linkplain * ClassLoader#getSystemClassLoader() system class loader} will be used. * </li> * <li> * <p> * Otherwise, the {@linkplain #newDefaultFactory() system-default} * implementation is returned. * </li> * </ul> * <p> * Once an application has obtained a reference to a XMLOutputFactory it * can use the factory to configure and obtain stream instances. * * @throws FactoryConfigurationError in case of {@linkplain * java.util.ServiceConfigurationError service configuration error} or if * the implementation is not available or cannot be instantiated. */
public static XMLOutputFactory newFactory() throws FactoryConfigurationError { return FactoryFinder.find(XMLOutputFactory.class, DEFAULIMPL); }
Create a new instance of the factory.
Params:
  • factoryId – Name of the factory to find, same as a property name
  • classLoader – classLoader to use
Throws:
Returns:the factory implementation
Deprecated: This method has been deprecated because it returns an instance of XMLInputFactory, which is of the wrong class. Use the new method newFactory(String, ClassLoader) instead.
/** * Create a new instance of the factory. * * @param factoryId Name of the factory to find, same as * a property name * @param classLoader classLoader to use * @return the factory implementation * @throws FactoryConfigurationError if an instance of this factory cannot be loaded * * @deprecated This method has been deprecated because it returns an * instance of XMLInputFactory, which is of the wrong class. * Use the new method {@link #newFactory(java.lang.String, * java.lang.ClassLoader)} instead. */
@Deprecated(since="1.7") public static XMLInputFactory newInstance(String factoryId, ClassLoader classLoader) throws FactoryConfigurationError { //do not fallback if given classloader can't find the class, throw exception return FactoryFinder.find(XMLInputFactory.class, factoryId, classLoader, null); }
Create a new instance of the factory. If the classLoader argument is null, then the ContextClassLoader is used.

This method uses the following ordered lookup procedure to determine the XMLOutputFactory implementation class to load:

  • Use the value of the system property identified by factoryId.
  • Use the configuration file "stax.properties". The file is in standard Properties format and typically located in the conf directory of the Java installation. It contains the fully qualified name of the implementation class with the key being the system property defined above.

    The stax.properties file is read only once by the implementation and its values are then cached for future use. If the file does not exist when the first attempt is made to read from it, no further attempts are made to check for its existence. It is not possible to change the value of any property in stax.properties after it has been read for the first time.

    Use the jaxp configuration file "jaxp.properties". The file is in the same format as stax.properties and will only be read if stax.properties does not exist.

  • If factoryId is "javax.xml.stream.XMLOutputFactory", use the service-provider loading facility, defined by the ServiceLoader class, to attempt to locate and load an implementation of the service using the specified ClassLoader. If classLoader is null, the default loading mechanism will apply: That is, the service-provider loading facility will use the current thread's context class loader to attempt to load the service. If the context class loader is null, the system class loader will be used.

  • Otherwise, throws a FactoryConfigurationError.

Params:
  • factoryId – Name of the factory to find, same as a property name
  • classLoader – classLoader to use
Throws:
API Note:The parameter factoryId defined here is inconsistent with that of other JAXP factories where the first parameter is fully qualified factory class name that provides implementation of the factory.

Note that this is a new method that replaces the deprecated newInstance(String factoryId, ClassLoader classLoader) method. The original method was incorrectly defined to return XMLInputFactory.

Returns:the factory implementation
/** * Create a new instance of the factory. * If the classLoader argument is null, then the ContextClassLoader is used. * <p> * This method uses the following ordered lookup procedure to determine * the XMLOutputFactory implementation class to load: * <ul> * <li> * Use the value of the system property identified by {@code factoryId}. * </li> * <li> * <p> * Use the configuration file "stax.properties". The file is in standard * {@link java.util.Properties} format and typically located in the * {@code conf} directory of the Java installation. It contains the fully qualified * name of the implementation class with the key being the system property * defined above. * * <p> * The stax.properties file is read only once by the implementation * and its values are then cached for future use. If the file does not exist * when the first attempt is made to read from it, no further attempts are * made to check for its existence. It is not possible to change the value * of any property in stax.properties after it has been read for the first time. * * <p> * Use the jaxp configuration file "jaxp.properties". The file is in the same * format as stax.properties and will only be read if stax.properties does * not exist. * </li> * <li> * <p> * If {@code factoryId} is "javax.xml.stream.XMLOutputFactory", * use the service-provider loading facility, defined by the * {@link java.util.ServiceLoader} class, to attempt to {@linkplain * java.util.ServiceLoader#load(java.lang.Class, java.lang.ClassLoader) locate and load} * an implementation of the service using the specified {@code ClassLoader}. * If {@code classLoader} is null, the {@linkplain * java.util.ServiceLoader#load(java.lang.Class) default loading mechanism} will apply: * That is, the service-provider loading facility will use the {@linkplain * java.lang.Thread#getContextClassLoader() current thread's context class loader} * to attempt to load the service. If the context class * loader is null, the {@linkplain * ClassLoader#getSystemClassLoader() system class loader} will be used. * </li> * <li> * <p> * Otherwise, throws a {@link FactoryConfigurationError}. * </li> * </ul> * * @apiNote The parameter factoryId defined here is inconsistent with that * of other JAXP factories where the first parameter is fully qualified * factory class name that provides implementation of the factory. * * <p> * Note that this is a new method that replaces the deprecated * {@link #newInstance(java.lang.String, java.lang.ClassLoader) * newInstance(String factoryId, ClassLoader classLoader)} method. * The original method was incorrectly defined to return XMLInputFactory. * * * @param factoryId Name of the factory to find, same as * a property name * @param classLoader classLoader to use * @return the factory implementation * @throws FactoryConfigurationError in case of {@linkplain * java.util.ServiceConfigurationError service configuration error} or if * the implementation is not available or cannot be instantiated. */
public static XMLOutputFactory newFactory(String factoryId, ClassLoader classLoader) throws FactoryConfigurationError { //do not fallback if given classloader can't find the class, throw exception return FactoryFinder.find(XMLOutputFactory.class, factoryId, classLoader, null); }
Create a new XMLStreamWriter that writes to a writer
Params:
  • stream – the writer to write to
Throws:
/** * Create a new XMLStreamWriter that writes to a writer * @param stream the writer to write to * @throws XMLStreamException */
public abstract XMLStreamWriter createXMLStreamWriter(java.io.Writer stream) throws XMLStreamException;
Create a new XMLStreamWriter that writes to a stream
Params:
  • stream – the stream to write to
Throws:
/** * Create a new XMLStreamWriter that writes to a stream * @param stream the stream to write to * @throws XMLStreamException */
public abstract XMLStreamWriter createXMLStreamWriter(java.io.OutputStream stream) throws XMLStreamException;
Create a new XMLStreamWriter that writes to a stream
Params:
  • stream – the stream to write to
  • encoding – the encoding to use
Throws:
/** * Create a new XMLStreamWriter that writes to a stream * @param stream the stream to write to * @param encoding the encoding to use * @throws XMLStreamException */
public abstract XMLStreamWriter createXMLStreamWriter(java.io.OutputStream stream, String encoding) throws XMLStreamException;
Create a new XMLStreamWriter that writes to a JAXP result. This method is optional.
Params:
  • result – the result to write to
Throws:
/** * Create a new XMLStreamWriter that writes to a JAXP result. This method is optional. * @param result the result to write to * @throws UnsupportedOperationException if this method is not * supported by this XMLOutputFactory * @throws XMLStreamException */
public abstract XMLStreamWriter createXMLStreamWriter(Result result) throws XMLStreamException;
Create a new XMLEventWriter that writes to a JAXP result. This method is optional.
Params:
  • result – the result to write to
Throws:
/** * Create a new XMLEventWriter that writes to a JAXP result. This method is optional. * @param result the result to write to * @throws UnsupportedOperationException if this method is not * supported by this XMLOutputFactory * @throws XMLStreamException */
public abstract XMLEventWriter createXMLEventWriter(Result result) throws XMLStreamException;
Create a new XMLEventWriter that writes to a stream
Params:
  • stream – the stream to write to
Throws:
/** * Create a new XMLEventWriter that writes to a stream * @param stream the stream to write to * @throws XMLStreamException */
public abstract XMLEventWriter createXMLEventWriter(java.io.OutputStream stream) throws XMLStreamException;
Create a new XMLEventWriter that writes to a stream
Params:
  • stream – the stream to write to
  • encoding – the encoding to use
Throws:
/** * Create a new XMLEventWriter that writes to a stream * @param stream the stream to write to * @param encoding the encoding to use * @throws XMLStreamException */
public abstract XMLEventWriter createXMLEventWriter(java.io.OutputStream stream, String encoding) throws XMLStreamException;
Create a new XMLEventWriter that writes to a writer
Params:
  • stream – the stream to write to
Throws:
/** * Create a new XMLEventWriter that writes to a writer * @param stream the stream to write to * @throws XMLStreamException */
public abstract XMLEventWriter createXMLEventWriter(java.io.Writer stream) throws XMLStreamException;
Allows the user to set specific features/properties on the underlying implementation.
Params:
  • name – The name of the property
  • value – The value of the property
Throws:
/** * Allows the user to set specific features/properties on the underlying implementation. * @param name The name of the property * @param value The value of the property * @throws java.lang.IllegalArgumentException if the property is not supported */
public abstract void setProperty(java.lang.String name, Object value) throws IllegalArgumentException;
Get a feature/property on the underlying implementation
Params:
  • name – The name of the property
Throws:
Returns:The value of the property
/** * Get a feature/property on the underlying implementation * @param name The name of the property * @return The value of the property * @throws java.lang.IllegalArgumentException if the property is not supported */
public abstract Object getProperty(java.lang.String name) throws IllegalArgumentException;
Query the set of properties that this factory supports.
Params:
  • name – The name of the property (may not be null)
Returns:true if the property is supported and false otherwise
/** * Query the set of properties that this factory supports. * * @param name The name of the property (may not be null) * @return true if the property is supported and false otherwise */
public abstract boolean isPropertySupported(String name); }