/*
* Copyright 2004,2005 The Apache Software Foundation.
*
* 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.axiom.om.impl.llom;
import org.apache.axiom.om.OMDocument;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMException;
import org.apache.axiom.om.OMFactory;
import org.apache.axiom.om.OMNode;
import org.apache.axiom.om.OMOutputFormat;
import org.apache.axiom.om.OMXMLParserWrapper;
import org.apache.axiom.om.impl.OMContainerEx;
import org.apache.axiom.om.impl.OMNodeEx;
import org.apache.axiom.om.impl.MTOMXMLStreamWriter;
import org.apache.axiom.om.impl.traverse.OMChildrenIterator;
import org.apache.axiom.om.impl.traverse.OMChildrenQNameIterator;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
import java.io.OutputStream;
import java.util.Iterator;
/**
* Class OMDocumentImpl
*/
public class OMDocumentImpl implements OMDocument, OMContainerEx {
/**
* Field documentElement
*/
protected OMElement documentElement;
/**
* Field firstChild
*/
protected OMNode firstChild;
/**
* Field lastChild
*/
protected OMNode lastChild;
/**
* Field done
*/
protected boolean done = false;
/**
* Field parserWrapper
*/
protected OMXMLParserWrapper parserWrapper;
/**
* Field charSetEncoding
* Default : UTF-8
*/
protected String charSetEncoding = "UTF-8";
/**
* Field xmlVersion
*/
protected String xmlVersion = "1.0";
protected String isStandalone;
protected OMFactory factory;
/**
* Default constructor
*/
public OMDocumentImpl() {
this.done = true;
}
/**
* @param documentElement
* @param parserWrapper
*/
public OMDocumentImpl(OMElement documentElement, OMXMLParserWrapper parserWrapper) {
this.documentElement = documentElement;
this.parserWrapper = parserWrapper;
}
/**
* @param parserWrapper
*/
public OMDocumentImpl(OMXMLParserWrapper parserWrapper) {
this.parserWrapper = parserWrapper;
}
/**
* Create a <code>OMDocument</code> given the <code>OMFactory</code>
* @param factory The <code>OMFactory</code> that created this instace
*/
public OMDocumentImpl(OMFactory factory) {
this();
this.factory = factory;
}
/**
* Create the <code>OMDocument</code> with the factory
* @param parserWrapper
* @param factory
*/
public OMDocumentImpl(OMXMLParserWrapper parserWrapper, OMFactory factory) {
this(parserWrapper);
this.factory = factory;
}
/**
* Create the <code>OMDoucment</code> with the factory and set the given
* <code>OMElement</code> as the document element
* @param documentElement
* @param parserWrapper
* @param factory
*/
public OMDocumentImpl(OMElement documentElement, OMXMLParserWrapper parserWrapper, OMFactory factory) {
this(documentElement, parserWrapper);
this.factory = factory;
}
/**
* Method getDocumentElement.
*
* @return Returns OMElement.
*/
public OMElement getOMDocumentElement() {
while (documentElement == null) {
parserWrapper.next();
}
return documentElement;
}
/**
* Method setDocumentElement.
*
* @param documentElement
*/
public void setOMDocumentElement(OMElement documentElement) {
this.documentElement = documentElement;
}
/**
* Indicates whether parser has parsed this information item completely or not.
* If some information is not available in the item, one has to check this
* attribute to make sure that, this item has been parsed completely or not.
*
* @return Returns boolean.
*/
public boolean isComplete() {
return done;
}
/**
* Method setComplete.
*
* @param state
*/
public void setComplete(boolean state) {
this.done = state;
}
/**
* Forces the parser to proceed, if parser has not yet finished with the XML input.
*/
public void buildNext() {
if (!parserWrapper.isCompleted())
parserWrapper.next();
}
/**
* Adds child to the element. One can decide whether to append the child or to add to the
* front of the children list.
*
* @param child
*/
public void addChild(OMNode child) {
if(child instanceof OMElement) {
if(this.documentElement == null) {
addChild((OMNodeImpl) child);
this.documentElement = (OMElement)child;
} else {
throw new OMException("Document element already exists");
}
} else {
addChild((OMNodeImpl) child);
}
}
/**
* Method addChild.
*
* @param child
*/
private void addChild(OMNodeImpl child) {
if (firstChild == null) {
firstChild = child;
child.setPreviousOMSibling(null);
} else {
child.setPreviousOMSibling(lastChild);
((OMNodeEx)lastChild).setNextOMSibling(child);
}
child.setNextOMSibling(null);
child.setParent(this);
lastChild = child;
}
/**
* Returns a collection of this element.
* Children can be of types OMElement, OMText.
*
* @return Returns iterator.
*/
public Iterator getChildren() {
return new OMChildrenIterator(getFirstOMChild());
}
/**
* Searches for children with a given QName and returns an iterator to traverse through
* the OMNodes.
* The QName can contain any combination of prefix, localname and URI.
*
* @param elementQName
* @return Returns Iterator.
* @throws org.apache.axiom.om.OMException
*/
public Iterator getChildrenWithName(QName elementQName) {
return new OMChildrenQNameIterator(getFirstOMChild(),
elementQName);
}
/**
* Method getFirstOMChild.
*
* @return Returns first om child.
*/
public OMNode getFirstOMChild() {
while ((firstChild == null) && !done) {
buildNext();
}
return firstChild;
}
/**
* Method getFirstChildWithName.
*
* @param elementQName
* @return Returns OMElement.
* @throws OMException
*/
public OMElement getFirstChildWithName(QName elementQName) throws OMException {
OMChildrenQNameIterator omChildrenQNameIterator =
new OMChildrenQNameIterator(getFirstOMChild(),
elementQName);
OMNode omNode = null;
if (omChildrenQNameIterator.hasNext()) {
omNode = (OMNode) omChildrenQNameIterator.next();
}
return ((omNode != null) && (OMNode.ELEMENT_NODE == omNode.getType())) ?
(OMElement) omNode : null;
}
/**
* Method setFirstChild.
*
* @param firstChild
*/
public void setFirstChild(OMNode firstChild) {
this.firstChild = firstChild;
}
/**
* Returns the character set encoding scheme to be used.
*
* @return Returns charset.
*/
public String getCharsetEncoding() {
return charSetEncoding;
}
/**
* Sets the character set encoding scheme.
*
* @param charEncoding
*/
public void setCharsetEncoding(String charEncoding) {
this.charSetEncoding = charEncoding;
}
public String isStandalone() {
return isStandalone;
}
public void setStandalone(String isStandalone) {
this.isStandalone = isStandalone;
}
public String getXMLVersion() {
return xmlVersion;
}
public void setXMLVersion(String xmlVersion) {
this.xmlVersion = xmlVersion;
}
/**
* Serialize the docuement with/without the XML declaration
*/
public void internalSerializeAndConsume(XMLStreamWriter writer, boolean includeXMLDeclaration) throws XMLStreamException {
internalSerialize(writer, false, includeXMLDeclaration);
}
/**
* Serializes the document with the XML declaration.
*/
public void internalSerializeAndConsume(XMLStreamWriter writer)
throws XMLStreamException {
internalSerialize(writer, false, !((MTOMXMLStreamWriter)writer).isIgnoreXMLDeclaration());
}
/**
* Serializes the document with cache.
*/
public void internalSerialize(XMLStreamWriter writer) throws XMLStreamException {
internalSerialize(writer, true, !((MTOMXMLStreamWriter)writer).isIgnoreXMLDeclaration());
}
/**
* Serializes the document directly to the output stream with caching disabled.
*
* @param output
* @throws XMLStreamException
*/
public void serializeAndConsume(OutputStream output) throws XMLStreamException {
MTOMXMLStreamWriter writer = new MTOMXMLStreamWriter(output, new OMOutputFormat());
internalSerializeAndConsume(writer);
writer.flush();
}
/**
* Serializes the document directly to the output stream with caching enabled.
*
* @param output
* @throws XMLStreamException
*/
public void serialize(OutputStream output) throws XMLStreamException {
MTOMXMLStreamWriter writer = new MTOMXMLStreamWriter(output, new OMOutputFormat());
internalSerialize(writer);
writer.flush();
}
/**
* Serializes the document directly to the output stream with caching disabled.
*
* @param output
* @param format
* @throws XMLStreamException
*/
public void serializeAndConsume(OutputStream output, OMOutputFormat format) throws XMLStreamException {
MTOMXMLStreamWriter writer = new MTOMXMLStreamWriter(output, format);
internalSerializeAndConsume(writer);
writer.flush();
}
/**
* Serializes the document directly to the output stream with caching enabled.
*
* @param output
* @param format
* @throws XMLStreamException
*/
public void serialize(OutputStream output, OMOutputFormat format) throws XMLStreamException {
MTOMXMLStreamWriter writer = new MTOMXMLStreamWriter(output, format);
internalSerialize(writer);
writer.flush();
}
/**
* Serializes the document with cache.
*/
public void internalSerialize(XMLStreamWriter writer, boolean includeXMLDeclaration) throws XMLStreamException {
internalSerialize(writer, true, includeXMLDeclaration);
}
protected void internalSerialize(XMLStreamWriter writer2, boolean cache, boolean includeXMLDeclaration) throws XMLStreamException {
MTOMXMLStreamWriter writer = (MTOMXMLStreamWriter) writer2;
if (includeXMLDeclaration) {
//Check whether the OMOutput char encoding and OMDocument char
//encoding matches, if not use char encoding of OMOutput
String outputCharEncoding = writer.getCharSetEncoding();
if (outputCharEncoding == null || "".equals(outputCharEncoding)) {
writer.getXmlStreamWriter().writeStartDocument(charSetEncoding,
xmlVersion);
} else {
writer.getXmlStreamWriter().writeStartDocument(outputCharEncoding,
xmlVersion);
}
}
Iterator children = this.getChildren();
if (cache) {
while (children.hasNext()) {
OMNodeEx omNode = (OMNodeEx) children.next();
omNode.internalSerialize(writer);
}
} else {
while (children.hasNext()) {
OMNodeEx omNode = (OMNodeEx) children.next();
omNode.internalSerializeAndConsume(writer);
}
}
}
public OMFactory getOMFactory() {
// TODO TODO
throw new UnsupportedOperationException("TODO");
}
}