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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * accompanied this code).
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package jdk.internal.util.xml;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import jdk.internal.org.xml.sax.InputSource;
import jdk.internal.org.xml.sax.SAXException;
import jdk.internal.org.xml.sax.XMLReader;
import jdk.internal.org.xml.sax.helpers.DefaultHandler;



Defines the API that wraps an XMLReader implementation class. In JAXP 1.0, this class wrapped the Parser interface, however this interface was replaced by the XMLReader. For ease of transition, this class continues to support the same name and interface as well as supporting new methods. An instance of this class can be obtained from the newSAXParser.newSAXParser() method. Once an instance of this class is obtained, XML can be parsed from a variety of input sources. These input sources are InputStreams, Files, URLs, and SAX InputSources.

This static method creates a new factory instance based
on a system property setting or uses the platform default
if no property has been defined.

The system property that controls which Factory implementation
to create is named "javax.xml.parsers.SAXParserFactory".
This property names a class that is a concrete subclass of this
abstract class. If no property is defined, a platform default
will be used.
 As the content is parsed by the underlying parser, methods of the given DefaultHandler are called.
 Implementors of this class which wrap an underlaying implementation can consider using the ParserAdapter class to initially adapt their SAX1 implementation to work under this revised class. 
Author:Jeff Suttor, Joe Wang
This is a subset of that in JAXP, javax.xml.parsers.SAXParser
Version:$Revision: 1.8 $, $Date: 2010-11-01 04:36:09 $
/**
 * Defines the API that wraps an {@link org.xml.sax.XMLReader}
 * implementation class. In JAXP 1.0, this class wrapped the
 * {@link org.xml.sax.Parser} interface, however this interface was
 * replaced by the {@link org.xml.sax.XMLReader}. For ease
 * of transition, this class continues to support the same name
 * and interface as well as supporting new methods.
 *
 * An instance of this class can be obtained from the
 * {@link javax.xml.parsers.SAXParserFactory#newSAXParser()} method.
 * Once an instance of this class is obtained, XML can be parsed from
 * a variety of input sources. These input sources are InputStreams,
 * Files, URLs, and SAX InputSources.<p>
 *
 * This static method creates a new factory instance based
 * on a system property setting or uses the platform default
 * if no property has been defined.<p>
 *
 * The system property that controls which Factory implementation
 * to create is named <code>&quot;javax.xml.parsers.SAXParserFactory&quot;</code>.
 * This property names a class that is a concrete subclass of this
 * abstract class. If no property is defined, a platform default
 * will be used.</p>
 *
 * As the content is parsed by the underlying parser, methods of the
 * given
 * {@link org.xml.sax.helpers.DefaultHandler} are called.<p>
 *
 * Implementors of this class which wrap an underlaying implementation
 * can consider using the {@link org.xml.sax.helpers.ParserAdapter}
 * class to initially adapt their SAX1 implementation to work under
 * this revised class.
 *
 * @author <a href="mailto:Jeff.Suttor@Sun.com">Jeff Suttor</a>
 * @version $Revision: 1.8 $, $Date: 2010-11-01 04:36:09 $
 *
 * @author Joe Wang
 * This is a subset of that in JAXP, javax.xml.parsers.SAXParser
 *
 */
public abstract class SAXParser {

    
Protected constructor to prevent instantiation.


/**
     * <p>Protected constructor to prevent instantiation.</p>
     */
    protected SAXParser() {
    }

    
Parse the content of the given InputStream instance as XML using the specified DefaultHandler. 
Params:
  • is – InputStream containing the content to be parsed.
  • dh – The SAX DefaultHandler to use.
Throws:
See Also:
  • DocumentHandler
/**
     * Parse the content of the given {@link java.io.InputStream}
     * instance as XML using the specified
     * {@link org.xml.sax.helpers.DefaultHandler}.
     *
     * @param is InputStream containing the content to be parsed.
     * @param dh The SAX DefaultHandler to use.
     *
     * @throws IllegalArgumentException If the given InputStream is null.
     * @throws IOException If any IO errors occur.
     * @throws SAXException If any SAX errors occur during processing.
     *
     * @see org.xml.sax.DocumentHandler
     */
    public void parse(InputStream is, DefaultHandler dh)
        throws SAXException, IOException
    {
        if (is == null) {
            throw new IllegalArgumentException("InputStream cannot be null");
        }

        InputSource input = new InputSource(is);
        this.parse(input, dh);
    }

    
Parse the content described by the giving Uniform Resource Identifier (URI) as XML using the specified DefaultHandler. 
Params:
  • uri – The location of the content to be parsed.
  • dh – The SAX DefaultHandler to use.
Throws:
See Also:
  • DocumentHandler
/**
     * Parse the content described by the giving Uniform Resource
     * Identifier (URI) as XML using the specified
     * {@link org.xml.sax.helpers.DefaultHandler}.
     *
     * @param uri The location of the content to be parsed.
     * @param dh The SAX DefaultHandler to use.
     *
     * @throws IllegalArgumentException If the uri is null.
     * @throws IOException If any IO errors occur.
     * @throws SAXException If any SAX errors occur during processing.
     *
     * @see org.xml.sax.DocumentHandler
     */
    public void parse(String uri, DefaultHandler dh)
        throws SAXException, IOException
    {
        if (uri == null) {
            throw new IllegalArgumentException("uri cannot be null");
        }

        InputSource input = new InputSource(uri);
        this.parse(input, dh);
    }

    
Parse the content of the file specified as XML using the specified DefaultHandler. 
Params:
  • f – The file containing the XML to parse
  • dh – The SAX DefaultHandler to use.
Throws:
See Also:
  • DocumentHandler
/**
     * Parse the content of the file specified as XML using the
     * specified {@link org.xml.sax.helpers.DefaultHandler}.
     *
     * @param f The file containing the XML to parse
     * @param dh The SAX DefaultHandler to use.
     *
     * @throws IllegalArgumentException If the File object is null.
     * @throws IOException If any IO errors occur.
     * @throws SAXException If any SAX errors occur during processing.
     *
     * @see org.xml.sax.DocumentHandler
     */
    public void parse(File f, DefaultHandler dh)
        throws SAXException, IOException
    {
        if (f == null) {
            throw new IllegalArgumentException("File cannot be null");
        }

        //convert file to appropriate URI, f.toURI().toASCIIString()
        //converts the URI to string as per rule specified in
        //RFC 2396,
        InputSource input = new InputSource(f.toURI().toASCIIString());
        this.parse(input, dh);
    }

    
Parse the content given InputSource as XML using the specified DefaultHandler. 
Params:
  • is – The InputSource containing the content to be parsed.
  • dh – The SAX DefaultHandler to use.
Throws:
See Also:
  • DocumentHandler
/**
     * Parse the content given {@link org.xml.sax.InputSource}
     * as XML using the specified
     * {@link org.xml.sax.helpers.DefaultHandler}.
     *
     * @param is The InputSource containing the content to be parsed.
     * @param dh The SAX DefaultHandler to use.
     *
     * @throws IllegalArgumentException If the <code>InputSource</code> object
     *   is <code>null</code>.
     * @throws IOException If any IO errors occur.
     * @throws SAXException If any SAX errors occur during processing.
     *
     * @see org.xml.sax.DocumentHandler
     */
    public void parse(InputSource is, DefaultHandler dh)
        throws SAXException, IOException
    {
        if (is == null) {
            throw new IllegalArgumentException("InputSource cannot be null");
        }

        XMLReader reader = this.getXMLReader();
        if (dh != null) {
            reader.setContentHandler(dh);
            reader.setEntityResolver(dh);
            reader.setErrorHandler(dh);
            reader.setDTDHandler(dh);
        }
        reader.parse(is);
    }

    
Returns the XMLReader that is encapsulated by the implementation of this class. 
Throws:
Returns:The XMLReader that is encapsulated by the
        implementation of this class.
/**
     * Returns the {@link org.xml.sax.XMLReader} that is encapsulated by the
     * implementation of this class.
     *
     * @return The XMLReader that is encapsulated by the
     *         implementation of this class.
     *
     * @throws SAXException If any SAX errors occur during processing.
     */
    public abstract XMLReader getXMLReader() throws SAXException;

    
Indicates whether or not this parser is configured to
understand namespaces.

Returns:true if this parser is configured to
        understand namespaces; false otherwise.
/**
     * Indicates whether or not this parser is configured to
     * understand namespaces.
     *
     * @return true if this parser is configured to
     *         understand namespaces; false otherwise.
     */
    public abstract boolean isNamespaceAware();

    
Indicates whether or not this parser is configured to
validate XML documents.

Returns:true if this parser is configured to
        validate XML documents; false otherwise.
/**
     * Indicates whether or not this parser is configured to
     * validate XML documents.
     *
     * @return true if this parser is configured to
     *         validate XML documents; false otherwise.
     */
    public abstract boolean isValidating();

    
Get the XInclude processing mode for this parser.


Throws:
See Also:
  • setXIncludeAware.setXIncludeAware(boolean)
Returns: the return value of the isXIncludeAware.isXIncludeAware() when this parser was created from factory.
Since:1.5
/**
     * <p>Get the XInclude processing mode for this parser.</p>
     *
     * @return
     *      the return value of
     *      the {@link SAXParserFactory#isXIncludeAware()}
     *      when this parser was created from factory.
     *
     * @throws UnsupportedOperationException When implementation does not
     *   override this method
     *
     * @since 1.5
     *
     * @see SAXParserFactory#setXIncludeAware(boolean)
     */
    public boolean isXIncludeAware() {
        throw new UnsupportedOperationException(
                "This parser does not support specification \""
                + this.getClass().getPackage().getSpecificationTitle()
                + "\" version \""
                + this.getClass().getPackage().getSpecificationVersion()
                + "\"");
    }
}