| /* |
| * 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 |
