org.eclipse.emf.ecore.xmi.impl
Class XMLParserPoolImpl

java.lang.Object
  org.eclipse.emf.ecore.xmi.impl.XMLParserPoolImpl

All Implemented Interfaces:

XMLParserPool

public class XMLParserPoolImpl
extends java.lang.Object
implements XMLParserPool

This is the default thread safe implementation of XMLParserPool. This implementation is tuned for caching parsers and handlers created using same loading options. To avoid possible memory leak (in case user is trying to parse documents using different options for every parse), there is a restriction on the size of the pool. The key used for handler caching is based on the option map passed to load.

Constructor Summary

XMLParserPoolImpl()
Creates an instance that caches only parsers but not handlers.

XMLParserPoolImpl(boolean useHandlerCache)
Creates an instance that caches parsers and caches handlers as specified.

XMLParserPoolImpl(int size, boolean useHandlerCache)
Creates an instance that caches parsers and caches handlers as specified.

Method Summary

javax.xml.parsers.SAXParser	get(java.util.Map<java.lang.String,java.lang.Boolean> features, java.util.Map<java.lang.String,?> properties, boolean useLexicalHandler) Retrieves a parser from the pool given specified properties and features.
XMLDefaultHandler	getDefaultHandler(XMLResource resource, XMLLoad xmlLoad, XMLHelper helper, java.util.Map<?,?> options) Retrieves XMLDefaultHandler from the pool and initializes / prepares it.
protected javax.xml.parsers.SAXParser	makeParser(java.util.Map<java.lang.String,java.lang.Boolean> features, java.util.Map<java.lang.String,?> properties)
void	release(javax.xml.parsers.SAXParser parser, java.util.Map<java.lang.String,java.lang.Boolean> features, java.util.Map<java.lang.String,?> properties, boolean useLexicalHandler) Returns the parser to the pool.
void	releaseDefaultHandler(XMLDefaultHandler handler, java.util.Map<?,?> options) Returns the XMLDefaultHandler to the pool.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

XMLParserPoolImpl

public XMLParserPoolImpl()

Creates an instance that caches only parsers but not handlers.

See Also:

XMLParserPoolImpl(boolean)

XMLParserPoolImpl

public XMLParserPoolImpl(boolean useHandlerCache)

Creates an instance that caches parsers and caches handlers as specified.

Parameters:

useHandlerCache - indicates whether handler caching should be use.

See Also:

XMLParserPoolImpl(boolean)

XMLParserPoolImpl

public XMLParserPoolImpl(int size,
                         boolean useHandlerCache)

Creates an instance that caches parsers and caches handlers as specified.

Parameters:

size - indicates the maximum number of instances parser or handler instances that will be cached.

useHandlerCache - indicates whether handler caching should be use.

See Also:

XMLParserPoolImpl(boolean)

Method Detail

get

public javax.xml.parsers.SAXParser get(java.util.Map<java.lang.String,java.lang.Boolean> features,
                                       java.util.Map<java.lang.String,?> properties,
                                       boolean useLexicalHandler)
                                throws javax.xml.parsers.ParserConfigurationException,
                                       org.xml.sax.SAXException

Description copied from interface: XMLParserPool

Retrieves a parser from the pool given specified properties and features. If parser can't be created using specified properties or features, an exception can be thrown.

Specified by:

get in interface XMLParserPool

Parameters:

features - a map of the parser features and their values.

properties - a map of a parser properties and their values.

useLexicalHandler - whether a lexical handler was set during loading.

Returns:

A parser instance with given features and properties.

Throws:

javax.xml.parsers.ParserConfigurationException

org.xml.sax.SAXException

See Also:

XMLParserPool.get(Map, Map, boolean)

release

public void release(javax.xml.parsers.SAXParser parser,
                    java.util.Map<java.lang.String,java.lang.Boolean> features,
                    java.util.Map<java.lang.String,?> properties,
                    boolean useLexicalHandler)

Description copied from interface: XMLParserPool

Returns the parser to the pool.

Specified by:

release in interface XMLParserPool

Parameters:

parser - the parser to return to the pool.

features - a map of the parser features and their values.

properties - a map of a parser properties and their values.

useLexicalHandler - whether a lexical handler was set during loading.

See Also:

XMLParserPool.release(SAXParser, Map, Map, boolean)

makeParser

protected javax.xml.parsers.SAXParser makeParser(java.util.Map<java.lang.String,java.lang.Boolean> features,
                                                 java.util.Map<java.lang.String,?> properties)
                                          throws javax.xml.parsers.ParserConfigurationException,
                                                 org.xml.sax.SAXException

Throws:

javax.xml.parsers.ParserConfigurationException

org.xml.sax.SAXException

getDefaultHandler

public XMLDefaultHandler getDefaultHandler(XMLResource resource,
                                           XMLLoad xmlLoad,
                                           XMLHelper helper,
                                           java.util.Map<?,?> options)

Description copied from interface: XMLParserPool

Retrieves XMLDefaultHandler from the pool and initializes / prepares it.

Specified by:

getDefaultHandler in interface XMLParserPool

Parameters:

resource - - the resource

xmlLoad - - the XMLLoad

helper - - XMLHelper

releaseDefaultHandler

public void releaseDefaultHandler(XMLDefaultHandler handler,
                                  java.util.Map<?,?> options)

Description copied from interface: XMLParserPool

Returns the XMLDefaultHandler to the pool.

Specified by:

releaseDefaultHandler in interface XMLParserPool

Parameters:

handler - the handler to return to the pool