diff -r 1d7e6da6adc8 -r c348e06f0e82 jaxp/src/com/sun/xml/internal/stream/XMLInputFactoryImpl.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/jaxp/src/com/sun/xml/internal/stream/XMLInputFactoryImpl.java Thu Apr 12 08:38:26 2012 -0700 @@ -0,0 +1,305 @@ +/* + * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +package com.sun.xml.internal.stream; + +import java.io.InputStream; +import java.io.Reader; + +import javax.xml.stream.*; +import javax.xml.stream.util.XMLEventAllocator ; +import javax.xml.transform.Source; +import javax.xml.transform.stream.StreamSource; +import com.sun.org.apache.xerces.internal.xni.parser.XMLInputSource; +import com.sun.org.apache.xerces.internal.impl.XMLStreamReaderImpl; +import com.sun.org.apache.xerces.internal.impl.PropertyManager; +import com.sun.org.apache.xerces.internal.impl.XMLStreamFilterImpl; +import com.sun.org.apache.xerces.internal.impl.Constants; + +/** Factory Implementation for XMLInputFactory. + * @author Neeraj Bajaj Sun Microsystems + * @author K.Venugopal Sun Microsystems + */ + +//xxx: Should we be reusing the XMLInputSource object +public class XMLInputFactoryImpl extends javax.xml.stream.XMLInputFactory { + + + //List of supported properties and default values. + private PropertyManager fPropertyManager = new PropertyManager(PropertyManager.CONTEXT_READER) ; + private static final boolean DEBUG = false; + + //Maintain a reference to last reader instantiated. + private XMLStreamReaderImpl fTempReader = null ; + + boolean fPropertyChanged = false; + //no reader reuse by default + boolean fReuseInstance = false; + + /** Creates a new instance of ZephryParserFactory */ + public XMLInputFactoryImpl() { + + } + + void initEventReader(){ + fPropertyChanged = true; + } + + /** + * @param inputstream + * @throws XMLStreamException + * @return + */ + public XMLEventReader createXMLEventReader(InputStream inputstream) throws XMLStreamException { + initEventReader(); + //delegate everything to XMLStreamReader + return new XMLEventReaderImpl(createXMLStreamReader(inputstream)); + } + + public XMLEventReader createXMLEventReader(Reader reader) throws XMLStreamException { + initEventReader(); + //delegate everything to XMLStreamReader + return new XMLEventReaderImpl(createXMLStreamReader(reader)); + } + + public XMLEventReader createXMLEventReader(Source source) throws XMLStreamException { + initEventReader(); + //delegate everything to XMLStreamReader + return new XMLEventReaderImpl(createXMLStreamReader(source)); + } + + public XMLEventReader createXMLEventReader(String systemId, InputStream inputstream) throws XMLStreamException { + initEventReader(); + //delegate everything to XMLStreamReader + return new XMLEventReaderImpl(createXMLStreamReader(systemId, inputstream)); + } + + public XMLEventReader createXMLEventReader(java.io.InputStream stream, String encoding) throws XMLStreamException { + initEventReader(); + //delegate everything to XMLStreamReader + return new XMLEventReaderImpl(createXMLStreamReader(stream, encoding)); + } + + public XMLEventReader createXMLEventReader(String systemId, Reader reader) throws XMLStreamException { + initEventReader(); + //delegate everything to XMLStreamReader + return new XMLEventReaderImpl(createXMLStreamReader(systemId, reader)); + } + + /** Create a new XMLEventReader from an XMLStreamReader. After being used + * to construct the XMLEventReader instance returned from this method + * the XMLStreamReader must not be used. + * @param reader the XMLStreamReader to read from (may not be modified) + * @return a new XMLEventReader + * @throws XMLStreamException + */ + public XMLEventReader createXMLEventReader(XMLStreamReader reader) throws XMLStreamException { + + //xxx: what do we do now -- instance is passed from the application + //probably we should check if the state is at the start document, + //eventreader call to next() should return START_DOCUMENT and + //then delegate every call to underlying streamReader + return new XMLEventReaderImpl(reader) ; + } + + public XMLStreamReader createXMLStreamReader(InputStream inputstream) throws XMLStreamException { + XMLInputSource inputSource = new XMLInputSource(null, null, null, inputstream, null); + return getXMLStreamReaderImpl(inputSource); + } + + public XMLStreamReader createXMLStreamReader(Reader reader) throws XMLStreamException { + XMLInputSource inputSource = new XMLInputSource(null, null, null, reader, null); + return getXMLStreamReaderImpl(inputSource); + } + + public XMLStreamReader createXMLStreamReader(String systemId, Reader reader) throws XMLStreamException { + XMLInputSource inputSource = new XMLInputSource(null,systemId,null,reader,null); + return getXMLStreamReaderImpl(inputSource); + } + + public XMLStreamReader createXMLStreamReader(Source source) throws XMLStreamException { + return new XMLStreamReaderImpl(jaxpSourcetoXMLInputSource(source), + new PropertyManager(fPropertyManager)); + } + + public XMLStreamReader createXMLStreamReader(String systemId, InputStream inputstream) throws XMLStreamException { + XMLInputSource inputSource = new XMLInputSource(null,systemId,null,inputstream,null); + return getXMLStreamReaderImpl(inputSource); + } + + + public XMLStreamReader createXMLStreamReader(InputStream inputstream, String encoding) throws XMLStreamException { + XMLInputSource inputSource = new XMLInputSource(null,null,null,inputstream,encoding); + return getXMLStreamReaderImpl(inputSource); + } + + public XMLEventAllocator getEventAllocator() { + return (XMLEventAllocator)getProperty(XMLInputFactory.ALLOCATOR); + } + + public XMLReporter getXMLReporter() { + return (XMLReporter)fPropertyManager.getProperty(XMLInputFactory.REPORTER); + } + + public XMLResolver getXMLResolver() { + Object object = fPropertyManager.getProperty(XMLInputFactory.RESOLVER); + return (XMLResolver)object; + //return (XMLResolver)fPropertyManager.getProperty(XMLInputFactory.RESOLVER); + } + + public void setXMLReporter(XMLReporter xmlreporter) { + fPropertyManager.setProperty(XMLInputFactory.REPORTER, xmlreporter); + } + + public void setXMLResolver(XMLResolver xmlresolver) { + fPropertyManager.setProperty(XMLInputFactory.RESOLVER, xmlresolver); + } + + /** Create a filtered event reader that wraps the filter around the event reader + * @param reader the event reader to wrap + * @param filter the filter to apply to the event reader + * @throws XMLStreamException + */ + public XMLEventReader createFilteredReader(XMLEventReader reader, EventFilter filter) throws XMLStreamException { + return new EventFilterSupport(reader, filter); + } + + /** Create a filtered reader that wraps the filter around the reader + * @param reader the reader to filter + * @param filter the filter to apply to the reader + * @throws XMLStreamException + */ + public XMLStreamReader createFilteredReader(XMLStreamReader reader, StreamFilter filter) throws XMLStreamException { + if( reader != null && filter != null ) + return new XMLStreamFilterImpl(reader,filter); + + return null; + } + + + + /** Get the value of a feature/property from the underlying implementation + * @param name The name of the property (may not be null) + * @return The value of the property + * @throws IllegalArgumentException if the property is not supported + */ + public Object getProperty(java.lang.String name) throws java.lang.IllegalArgumentException { + if(name == null){ + throw new IllegalArgumentException("Property not supported"); + } + if(fPropertyManager.containsProperty(name)) + return fPropertyManager.getProperty(name); + throw new IllegalArgumentException("Property not supported"); + } + + /** Query the set of fProperties 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 boolean isPropertySupported(String name) { + if(name == null) + return false ; + else + return fPropertyManager.containsProperty(name); + } + + /** Set a user defined event allocator for events + * @param allocator the user defined allocator + */ + public void setEventAllocator(XMLEventAllocator allocator) { + fPropertyManager.setProperty(XMLInputFactory.ALLOCATOR, allocator); + } + + /** Allows the user to set specific feature/property on the underlying implementation. The underlying implementation + * is not required to support every setting of every property in the specification and may use IllegalArgumentException + * to signal that an unsupported property may not be set with the specified value. + * @param name The name of the property (may not be null) + * @param value The value of the property + * @throws java.lang.IllegalArgumentException if the property is not supported + */ + public void setProperty(java.lang.String name, Object value) throws java.lang.IllegalArgumentException { + + if(name == null || value == null || !fPropertyManager.containsProperty(name) ){ + throw new IllegalArgumentException("Property "+name+" is not supported"); + } + if(name == Constants.REUSE_INSTANCE || name.equals(Constants.REUSE_INSTANCE)){ + fReuseInstance = ((Boolean)value).booleanValue(); + if(DEBUG)System.out.println("fReuseInstance is set to " + fReuseInstance); + }else{//for any other property set the flag + //REVISIT: Even in this case instance can be reused, by passing PropertyManager + fPropertyChanged = true; + } + fPropertyManager.setProperty(name,value); + } + + XMLStreamReader getXMLStreamReaderImpl(XMLInputSource inputSource) throws javax.xml.stream.XMLStreamException{ + //1. if the temp reader is null -- create the instance and return + if(fTempReader == null){ + fPropertyChanged = false; + return fTempReader = new XMLStreamReaderImpl(inputSource, + new PropertyManager(fPropertyManager)); + } + //if factory is configured to reuse the instance & this instance can be reused + //& the setProperty() hasn't been called + if(fReuseInstance && fTempReader.canReuse() && !fPropertyChanged){ + if(DEBUG)System.out.println("Reusing the instance"); + //we can make setInputSource() call reset() and this way there wont be two function calls + fTempReader.reset(); + fTempReader.setInputSource(inputSource); + fPropertyChanged = false; + return fTempReader; + }else{ + fPropertyChanged = false; + //just return the new instance.. note that we are not setting fTempReader to the newly created instance + return fTempReader = new XMLStreamReaderImpl(inputSource, + new PropertyManager(fPropertyManager)); + } + } + + XMLInputSource jaxpSourcetoXMLInputSource(Source source){ + if(source instanceof StreamSource){ + StreamSource stSource = (StreamSource)source; + String systemId = stSource.getSystemId(); + String publicId = stSource.getPublicId(); + InputStream istream = stSource.getInputStream(); + Reader reader = stSource.getReader(); + + if(istream != null){ + return new XMLInputSource(publicId, systemId, null, istream, null); + } + else if(reader != null){ + return new XMLInputSource(publicId, systemId,null, reader, null); + }else{ + return new XMLInputSource(publicId, systemId, null); + } + } + + throw new UnsupportedOperationException("Cannot create " + + "XMLStreamReader or XMLEventReader from a " + + source.getClass().getName()); + } + +}//XMLInputFactoryImpl