/* | |
* Copyright 2004,2005 The Apache Software Foundation. | |
* Copyright 2006 International Business Machines Corp. | |
* | |
* Licensed under the Apache License, Version 2.0 (the "License"); | |
* you may not use this file except in compliance with the License. | |
* You may obtain a copy of the License at | |
* | |
* http://www.apache.org/licenses/LICENSE-2.0 | |
* | |
* Unless required by applicable law or agreed to in writing, software | |
* distributed under the License is distributed on an "AS IS" BASIS, | |
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
* See the License for the specific language governing permissions and | |
* limitations under the License. | |
*/ | |
package org.apache.axis2.jaxws.message.impl; | |
import java.util.List; | |
import javax.xml.namespace.QName; | |
import javax.xml.stream.XMLStreamException; | |
import org.apache.axiom.om.OMElement; | |
import org.apache.axis2.jaxws.message.Block; | |
import org.apache.axis2.jaxws.message.MessageException; | |
import org.apache.axis2.jaxws.message.Protocol; | |
import org.apache.axis2.jaxws.message.util.StackableReader; | |
import org.apache.axis2.jaxws.message.util.XMLStreamReaderFilter; | |
/** | |
* XMLStreamReaderForXMLSpine | |
* | |
* An XMLSpine is composed of many different parts: a sparse OM tree, | |
* header blocks, body blocks, etc. | |
* | |
* The XMLStreamReaderForXMLSpine provides an XMLStreamReader that | |
* over all of these combined objects (without building a full OM tree). | |
* It does this by using a StackableXMLStreamReader for the underlying implementation and | |
* pushing the XMLStreamReaders for the blocks onto the stack at the appropriate points in | |
* the message. | |
*/ | |
public class XMLStreamReaderForXMLSpine extends XMLStreamReaderFilter { | |
// Components of an XMLSpine | |
OMElement root; | |
private List<Block> headerBlocks = null; | |
private List<Block> bodyBlocks = null; | |
private List<Block> detailBlocks = null; | |
private boolean consume = false; | |
Protocol protocol = null; | |
// Local Constants | |
private static final String BODY = "Body"; | |
private static final String HEADER = "Header"; | |
private static final String FAULT = "Fault"; | |
private static final String DETAIL11 = "detail"; | |
private static final String DETAIL12 = "Detail"; | |
boolean inFault = false; | |
private List<Block> insertBlocks = null; | |
/** | |
* @param root of the XMLSpine | |
* @param headerBlocks | |
* @param bodyBocks | |
* @param detailBlocks | |
* @param consume | |
*/ | |
public XMLStreamReaderForXMLSpine(OMElement root, | |
Protocol protocol, | |
List<Block> headerBlocks, | |
List<Block> bodyBlocks, | |
List<Block> detailBlocks, | |
boolean consume) { | |
// Create a stackable reader and prime it with the root om tree | |
// The XMLStreamReader's for the blocks will be pushed onto the | |
// stack as the message is processed. | |
super(new StackableReader(root.getXMLStreamReader())); | |
this.root = root; | |
this.protocol = protocol; | |
this.headerBlocks = headerBlocks; | |
this.bodyBlocks = bodyBlocks; | |
this.detailBlocks = detailBlocks; | |
this.consume = consume; | |
} | |
@Override | |
public int next() throws XMLStreamException { | |
// The next method is overridden so that we can push | |
// the block's XMLStreamReaders onto the stack at the | |
// appropriate places in the message (pretty slick). | |
// Insert pending blocks onto the stack | |
if (insertBlocks != null) { | |
pushBlocks(insertBlocks, consume); | |
insertBlocks = null; | |
} | |
// Get the next event | |
int event = super.next(); | |
// If this is a start element event, then we may need to insert | |
// the blocks prior to the next event | |
if (isStartElement()) { | |
QName qName = super.getName(); | |
// Insert body blocks after the Body | |
if (qName.getLocalPart().equals(BODY) && | |
qName.getNamespaceURI().equals(root.getNamespace().getName())) { | |
if (bodyBlocks != null) { | |
insertBlocks = bodyBlocks; | |
bodyBlocks = null; | |
} | |
} | |
// Insert header blocks after the header | |
else if (qName.getLocalPart().equals(HEADER) && | |
qName.getNamespaceURI().equals(root.getNamespace().getName())) { | |
if (headerBlocks != null) { | |
insertBlocks = headerBlocks; | |
headerBlocks = null; | |
} | |
} | |
else if (qName.getLocalPart().equals(FAULT) && | |
qName.getNamespaceURI().equals(root.getNamespace().getName())) { | |
inFault = true; | |
} | |
// Insert Detail blocks afger the detail...note that | |
// the detail name is different in SOAP 1.1 and SOAP 1.2 | |
else if (inFault) { | |
if (qName.getLocalPart().equals(DETAIL11) && | |
protocol.equals(Protocol.soap11) || | |
qName.getLocalPart().equals(DETAIL12) && | |
protocol.equals(Protocol.soap12)) { | |
if (detailBlocks != null) { | |
insertBlocks = detailBlocks; | |
detailBlocks = null; | |
} | |
} | |
} | |
} | |
return event; | |
} | |
/** | |
* Push the XMLStreamReaders for the blocks | |
* @param blocks | |
*/ | |
private void pushBlocks(List<Block> blocks, boolean consume) throws XMLStreamException{ | |
// Push the XMLStreamReaders for the blocks onto the | |
// delegate. This is done in reverse order of the blocks so that the | |
// first block's xmlstreamreader is ontop of the stack. | |
try { | |
StackableReader sr = (StackableReader) delegate; | |
for (int i=blocks.size()-1; i>=0; i--) { | |
Block block = blocks.get(i); | |
if (block != null) { | |
sr.push(block.getXMLStreamReader(consume)); | |
} | |
} | |
} catch (MessageException me) { | |
throw new XMLStreamException(me); | |
} | |
} | |
} |