| /* |
| * 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.events; |
| |
| import com.sun.org.apache.xerces.internal.impl.PropertyManager; |
| import java.util.List; |
| import javax.xml.stream.util.XMLEventAllocator; |
| import javax.xml.stream.*; |
| import javax.xml.stream.events.*; |
| import javax.xml.XMLConstants; |
| import javax.xml.namespace.QName; |
| import com.sun.org.apache.xerces.internal.util.NamespaceContextWrapper; |
| import com.sun.org.apache.xerces.internal.util.NamespaceSupport; |
| |
| /** |
| * Implementation of XMLEvent Allocator. |
| * @author Neeraj.bajaj@sun.com, k.venugopal@sun.com |
| */ |
| public class XMLEventAllocatorImpl implements XMLEventAllocator { |
| |
| /** Creates a new instance of XMLEventAllocator */ |
| public XMLEventAllocatorImpl() { |
| } |
| |
| public javax.xml.stream.events.XMLEvent allocate(javax.xml.stream.XMLStreamReader xMLStreamReader) throws javax.xml.stream.XMLStreamException { |
| if(xMLStreamReader == null ) |
| throw new XMLStreamException("Reader cannot be null"); |
| // allocate is not supposed to change the state of the reader so we shouldn't be calling next. |
| // return getNextEvent(xMLStreamReader); |
| return getXMLEvent(xMLStreamReader); |
| } |
| |
| public void allocate(javax.xml.stream.XMLStreamReader xMLStreamReader, javax.xml.stream.util.XMLEventConsumer xMLEventConsumer) throws javax.xml.stream.XMLStreamException { |
| XMLEvent currentEvent = getXMLEvent(xMLStreamReader); |
| if(currentEvent != null ) |
| xMLEventConsumer.add(currentEvent); |
| |
| return; |
| } |
| |
| public javax.xml.stream.util.XMLEventAllocator newInstance() { |
| return new XMLEventAllocatorImpl(); |
| } |
| |
| //REVISIT: shouldn't we be using XMLEventFactory to create events. |
| XMLEvent getXMLEvent(XMLStreamReader streamReader){ |
| XMLEvent event = null; |
| //returns the current event |
| int eventType = streamReader.getEventType(); |
| switch(eventType){ |
| |
| case XMLEvent.START_ELEMENT:{ |
| StartElementEvent startElementEvent = new StartElementEvent(getQName(streamReader)); |
| fillAttributes(startElementEvent,streamReader); |
| //we might have different XMLStreamReader so check every time for the namespace aware property |
| //we should be setting namespace related values only when isNamespaceAware is 'true' |
| if( ((Boolean)streamReader.getProperty(XMLInputFactory.IS_NAMESPACE_AWARE)).booleanValue() ){ |
| fillNamespaceAttributes(startElementEvent, streamReader); |
| setNamespaceContext(startElementEvent,streamReader); |
| } |
| |
| startElementEvent.setLocation(streamReader.getLocation()); |
| event = startElementEvent ; |
| break; |
| } |
| case XMLEvent.END_ELEMENT:{ |
| EndElementEvent endElementEvent = new EndElementEvent(getQName(streamReader)); |
| endElementEvent.setLocation(streamReader.getLocation()); |
| |
| if( ((Boolean)streamReader.getProperty(XMLInputFactory.IS_NAMESPACE_AWARE)).booleanValue() ){ |
| fillNamespaceAttributes(endElementEvent,streamReader); |
| } |
| event = endElementEvent ; |
| break; |
| } |
| case XMLEvent.PROCESSING_INSTRUCTION:{ |
| ProcessingInstructionEvent piEvent = new ProcessingInstructionEvent(streamReader.getPITarget(),streamReader.getPIData()); |
| piEvent.setLocation(streamReader.getLocation()); |
| event = piEvent ; |
| break; |
| } |
| case XMLEvent.CHARACTERS:{ |
| CharacterEvent cDataEvent = new CharacterEvent(streamReader.getText()); |
| cDataEvent.setLocation(streamReader.getLocation()); |
| event = cDataEvent ; |
| break; |
| } |
| case XMLEvent.COMMENT:{ |
| CommentEvent commentEvent = new CommentEvent(streamReader.getText()); |
| commentEvent.setLocation(streamReader.getLocation()); |
| event = commentEvent ; |
| break; |
| } |
| case XMLEvent.START_DOCUMENT:{ |
| StartDocumentEvent sdEvent = new StartDocumentEvent(); |
| sdEvent.setVersion(streamReader.getVersion()); |
| sdEvent.setEncoding(streamReader.getEncoding()); |
| if(streamReader.getCharacterEncodingScheme() != null){ |
| sdEvent.setDeclaredEncoding(true); |
| }else{ |
| sdEvent.setDeclaredEncoding(false); |
| } |
| sdEvent.setStandalone(streamReader.isStandalone()); |
| sdEvent.setLocation(streamReader.getLocation()); |
| event = sdEvent ; |
| break; |
| } |
| case XMLEvent.END_DOCUMENT:{ |
| EndDocumentEvent endDocumentEvent = new EndDocumentEvent() ; |
| endDocumentEvent.setLocation(streamReader.getLocation()); |
| event = endDocumentEvent ; |
| break; |
| } |
| case XMLEvent.ENTITY_REFERENCE:{ |
| EntityReferenceEvent entityEvent = new EntityReferenceEvent(streamReader.getLocalName(), new EntityDeclarationImpl(streamReader.getLocalName(),streamReader.getText())); |
| entityEvent.setLocation(streamReader.getLocation()); |
| event = entityEvent; |
| break; |
| |
| } |
| case XMLEvent.ATTRIBUTE:{ |
| event = null ; |
| break; |
| } |
| case XMLEvent.DTD:{ |
| DTDEvent dtdEvent = new DTDEvent(streamReader.getText()); |
| dtdEvent.setLocation(streamReader.getLocation()); |
| List entities = (List)streamReader.getProperty(PropertyManager.STAX_ENTITIES); |
| if (entities != null && entities.size() != 0) dtdEvent.setEntities(entities); |
| List notations = (List)streamReader.getProperty(PropertyManager.STAX_NOTATIONS); |
| if (notations != null && notations.size() != 0) dtdEvent.setNotations(notations); |
| event = dtdEvent; |
| break; |
| } |
| case XMLEvent.CDATA:{ |
| CharacterEvent cDataEvent = new CharacterEvent(streamReader.getText(),true); |
| cDataEvent.setLocation(streamReader.getLocation()); |
| event = cDataEvent ; |
| break; |
| } |
| case XMLEvent.SPACE:{ |
| CharacterEvent spaceEvent = new CharacterEvent(streamReader.getText(),false,true); |
| spaceEvent.setLocation(streamReader.getLocation()); |
| event = spaceEvent ; |
| break; |
| } |
| } |
| return event ; |
| } |
| |
| //this function is not used.. |
| protected XMLEvent getNextEvent(XMLStreamReader streamReader) throws XMLStreamException{ |
| //advance the reader to next event. |
| streamReader.next(); |
| return getXMLEvent(streamReader); |
| } |
| |
| protected void fillAttributes(StartElementEvent event,XMLStreamReader xmlr){ |
| |
| int len = xmlr.getAttributeCount(); |
| QName qname = null; |
| AttributeImpl attr = null; |
| NamespaceImpl nattr = null; |
| for(int i=0; i<len ;i++){ |
| qname = xmlr.getAttributeName(i); |
| //this method doesn't include namespace declarations |
| //so we can be sure that there wont be any namespace declaration as part of this function call |
| //we can avoid this check - nb. |
| /** |
| * prefix = qname.getPrefix(); |
| * localpart = qname.getLocalPart(); |
| * if (prefix.equals(XMLConstants.XMLNS_ATTRIBUTE) ) { |
| * attr = new NamespaceImpl(localpart,xmlr.getAttributeValue(i)); |
| * }else if (prefix.equals(XMLConstants.DEFAULT_NS_PREFIX)){ |
| * attr = new NamespaceImpl(xmlr.getAttributeValue(i)); |
| * }else{ |
| * attr = new AttributeImpl(); |
| * attr.setName(qname); |
| * } |
| **/ |
| attr = new AttributeImpl(); |
| attr.setName(qname); |
| attr.setAttributeType(xmlr.getAttributeType(i)); |
| attr.setSpecified(xmlr.isAttributeSpecified(i)); |
| attr.setValue(xmlr.getAttributeValue(i)); |
| event.addAttribute(attr); |
| } |
| } |
| |
| protected void fillNamespaceAttributes(StartElementEvent event,XMLStreamReader xmlr){ |
| int count = xmlr.getNamespaceCount(); |
| String uri = null; |
| String prefix = null; |
| NamespaceImpl attr = null; |
| for(int i=0;i< count;i++){ |
| uri = xmlr.getNamespaceURI(i); |
| prefix = xmlr.getNamespacePrefix(i); |
| if(prefix == null){ |
| prefix = XMLConstants.DEFAULT_NS_PREFIX; |
| } |
| attr = new NamespaceImpl(prefix,uri); |
| event.addNamespaceAttribute(attr); |
| } |
| } |
| |
| protected void fillNamespaceAttributes(EndElementEvent event,XMLStreamReader xmlr){ |
| int count = xmlr.getNamespaceCount(); |
| String uri = null; |
| String prefix = null; |
| NamespaceImpl attr = null; |
| for(int i=0;i< count;i++){ |
| uri = xmlr.getNamespaceURI(i); |
| prefix = xmlr.getNamespacePrefix(i); |
| if(prefix == null){ |
| prefix = XMLConstants.DEFAULT_NS_PREFIX; |
| } |
| attr = new NamespaceImpl(prefix,uri); |
| event.addNamespace(attr); |
| } |
| } |
| |
| //Revisit : Creating a new Namespacecontext for now. |
| //see if we can do better job. |
| private void setNamespaceContext(StartElementEvent event , XMLStreamReader xmlr){ |
| NamespaceContextWrapper contextWrapper =(NamespaceContextWrapper) xmlr.getNamespaceContext(); |
| NamespaceSupport ns = new NamespaceSupport(contextWrapper.getNamespaceContext()); |
| event.setNamespaceContext(new NamespaceContextWrapper(ns)); |
| } |
| |
| private QName getQName(XMLStreamReader xmlr) { |
| return new QName(xmlr.getNamespaceURI(), xmlr.getLocalName(), |
| xmlr.getPrefix()); |
| } |
| } |
