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Java example source code file (XMLInputFactoryImpl.java)
The XMLInputFactoryImpl.java Java example source code/* * 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 Other Java examples (source code examples)Here is a short list of links related to this Java XMLInputFactoryImpl.java source code file: |
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