jdk.internal.util.xml.SAXParser Maven / Gradle / Ivy
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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 {@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.
*
* 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
* {@link org.xml.sax.helpers.DefaultHandler} are called.
*
* 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 Jeff Suttor
* @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.
*/
protected SAXParser() {
}
/**
* 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
* {@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 {@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 {@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 InputSource 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(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 {@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.
*
* @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.
*
* @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.
*
* @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()
+ "\"");
}
}
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