/* | |
* 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.util.impl; | |
import java.util.ArrayList; | |
import java.util.List; | |
import java.util.Stack; | |
import java.util.StringTokenizer; | |
import javax.xml.namespace.NamespaceContext; | |
import javax.xml.namespace.QName; | |
import javax.xml.stream.Location; | |
import javax.xml.stream.XMLStreamException; | |
import javax.xml.stream.XMLStreamReader; | |
import org.apache.axis2.jaxws.i18n.Messages; | |
import org.w3c.dom.Attr; | |
import org.w3c.dom.CDATASection; | |
import org.w3c.dom.CharacterData; | |
import org.w3c.dom.Comment; | |
import org.w3c.dom.Document; | |
import org.w3c.dom.DocumentType; | |
import org.w3c.dom.Element; | |
import org.w3c.dom.EntityReference; | |
import org.w3c.dom.NamedNodeMap; | |
import org.w3c.dom.Node; | |
import org.w3c.dom.ProcessingInstruction; | |
import org.w3c.dom.Text; | |
/** | |
* XMLStreamReader created from walking a DOM. | |
* This is an implementation class used by SOAPElementReader. | |
* @see org.apache.axis2.jaxws.util.SOAPElementReader | |
*/ | |
public class XMLStreamReaderFromDOM implements XMLStreamReader { | |
private Node cursor; | |
private Stack<Node> nextCursorStack = new Stack<Node>(); | |
private Node root; | |
private int event = XMLStreamReader.START_DOCUMENT; | |
private Node nextCursor = null; | |
private int nextEvent = -1; | |
private NamespaceContextFromDOM cacheNCI = null; | |
private Element cacheNCIKey = null; | |
private List cacheND = null; | |
private Element cacheNDKey = null; | |
/** | |
* Create the XMLStreamReader with an Envelope | |
* @param envelope Element (probably an SAAJ SOAPEnvelope) representing the Envelope | |
*/ | |
public XMLStreamReaderFromDOM(Element envelope) { | |
root = envelope; | |
cursor = root; | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getProperty(java.lang.String) | |
*/ | |
public Object getProperty(String key) throws IllegalArgumentException { | |
if (key == null) { | |
throw new IllegalArgumentException(Messages.getMessage("XMLSRErr1")); | |
} | |
return null; | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#next() | |
*/ | |
public int next() throws XMLStreamException { | |
if (!hasNext()) { | |
throw new XMLStreamException(Messages.getMessage("XMLSRErr")); | |
} | |
getNext(); | |
cursor = nextCursor; | |
event = nextEvent; | |
return event; | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#require(int, java.lang.String, java.lang.String) | |
*/ | |
public void require(int event, String namespace, String localPart) | |
throws XMLStreamException { | |
try { | |
if (event != this.event) { | |
throw new XMLStreamException(Messages.getMessage("XMLSRErr3", String.valueOf(event), String.valueOf(this.event))); | |
} | |
if (namespace != null && | |
!namespace.equals(cursor.getNamespaceURI())) { | |
throw new XMLStreamException(Messages.getMessage("XMLSRErr3", namespace, this.cursor.getNamespaceURI())); | |
} | |
if (localPart != null && | |
!localPart.equals(cursor.getLocalName())) { | |
throw new XMLStreamException(Messages.getMessage("XMLSRErr3", localPart ,this.cursor.getLocalName())); | |
} | |
} catch (XMLStreamException e) { | |
throw e; | |
} catch (Exception e) { | |
throw new XMLStreamException(e); | |
} | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getElementText() | |
*/ | |
public String getElementText() throws XMLStreamException { | |
if (event == XMLStreamReader.START_ELEMENT) { | |
next(); | |
StringBuffer buffer = new StringBuffer(); | |
while(event != XMLStreamReader.END_ELEMENT ) { | |
if (event == XMLStreamReader.CHARACTERS || | |
event == XMLStreamReader.CDATA || | |
event == XMLStreamReader.SPACE || | |
event == XMLStreamReader.ENTITY_REFERENCE) { | |
buffer.append(getText()); | |
} else if (event == XMLStreamReader.PROCESSING_INSTRUCTION || | |
event == XMLStreamReader.COMMENT) { | |
// whitespace | |
} else { | |
throw new XMLStreamException(Messages.getMessage("XMLSRErr4","getElementText()")); | |
} | |
next(); | |
} | |
return buffer.toString(); | |
} | |
throw new XMLStreamException(Messages.getMessage("XMLSRErr4","getElementText()")); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#nextTag() | |
*/ | |
public int nextTag() throws XMLStreamException { | |
next(); | |
while(event == XMLStreamReader.CHARACTERS && isWhiteSpace() || | |
event == XMLStreamReader.CDATA && isWhiteSpace() || | |
event == XMLStreamReader.SPACE || | |
event == XMLStreamReader.PROCESSING_INSTRUCTION || | |
event == XMLStreamReader.COMMENT) { | |
event = next(); | |
} | |
if (event == XMLStreamReader.START_ELEMENT || | |
event == XMLStreamReader.END_ELEMENT) { | |
return event; | |
} | |
throw new XMLStreamException(Messages.getMessage("XMLSRErr4","nextTag()")); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#hasNext() | |
*/ | |
public boolean hasNext() throws XMLStreamException { | |
return (event != XMLStreamReader.END_DOCUMENT); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#close() | |
*/ | |
public void close() throws XMLStreamException { | |
return; | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getNamespaceURI(java.lang.String) | |
*/ | |
public String getNamespaceURI(String prefix) { | |
if (cursor instanceof Element) { | |
return getNamespaceContext().getNamespaceURI(prefix); | |
} | |
throw new IllegalStateException(Messages.getMessage("XMLSRErr4","getNamespaceURI(String)")); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#isStartElement() | |
*/ | |
public boolean isStartElement() { | |
return (event == XMLStreamReader.START_ELEMENT); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#isEndElement() | |
*/ | |
public boolean isEndElement() { | |
return (event == XMLStreamReader.END_ELEMENT); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#isCharacters() | |
*/ | |
public boolean isCharacters() { | |
return (event == XMLStreamReader.CHARACTERS); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#isWhiteSpace() | |
*/ | |
public boolean isWhiteSpace() { | |
if (event == XMLStreamReader.CHARACTERS || | |
event == XMLStreamReader.CDATA) { | |
String value = ((CharacterData) cursor).getData(); | |
StringTokenizer st = new StringTokenizer(value); | |
return !(st.hasMoreTokens()); | |
} | |
return false; | |
} | |
/** | |
* @return list of attributes that are not namespace declarations | |
*/ | |
private List getAttributes() { | |
if (event == XMLStreamReader.START_ELEMENT) { | |
List attrs = new ArrayList(); | |
NamedNodeMap map = ((Element) cursor).getAttributes(); | |
if (map != null) { | |
for (int i=0; i<map.getLength(); i++) { | |
Attr attr = (Attr) map.item(i); | |
if (attr.getName().equals("xmlns") || | |
attr.getName().startsWith("xmlns:")) { | |
// this is a namespace declaration | |
} else { | |
attrs.add(attr); | |
} | |
} | |
} | |
return attrs; | |
} | |
throw new IllegalStateException(Messages.getMessage("XMLSRErr4", "getAttributes()")); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getAttributeValue(java.lang.String, java.lang.String) | |
*/ | |
public String getAttributeValue(String namespace, String localPart) { | |
if (event == XMLStreamReader.START_ELEMENT) { | |
return ((Element)cursor).getAttributeNS(namespace, localPart); | |
} | |
throw new IllegalStateException(Messages.getMessage("XMLSRErr4","getAttributeValue(String, String)")); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getAttributeCount() | |
*/ | |
public int getAttributeCount() { | |
return getAttributes().size(); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getAttributeName(int) | |
*/ | |
public QName getAttributeName(int index) { | |
Attr attr = (Attr) getAttributes().get(index); | |
return new QName(attr.getNamespaceURI(), attr.getLocalName()); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getAttributeNamespace(int) | |
*/ | |
public String getAttributeNamespace(int index) { | |
Attr attr = (Attr) getAttributes().get(index); | |
return attr.getNamespaceURI(); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getAttributeLocalName(int) | |
*/ | |
public String getAttributeLocalName(int index) { | |
Attr attr = (Attr) getAttributes().get(index); | |
return attr.getLocalName(); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getAttributePrefix(int) | |
*/ | |
public String getAttributePrefix(int index) { | |
Attr attr = (Attr) getAttributes().get(index); | |
return attr.getPrefix(); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getAttributeType(int) | |
*/ | |
public String getAttributeType(int index) { | |
Attr attr = (Attr) getAttributes().get(index); | |
return attr.getSchemaTypeInfo().getTypeName(); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getAttributeValue(int) | |
*/ | |
public String getAttributeValue(int index) { | |
Attr attr = (Attr) getAttributes().get(index); | |
return attr.getValue(); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#isAttributeSpecified(int) | |
*/ | |
public boolean isAttributeSpecified(int arg0) { | |
return true; | |
} | |
/* | |
* @return number of namespace declarations on this element | |
*/ | |
public int getNamespaceCount() { | |
if (cursor instanceof Element) { | |
List list = getNamespaceDeclarations(); | |
return list.size(); | |
} | |
throw new IllegalStateException(Messages.getMessage("XMLSRErr4","getNamespaceCount()")); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getNamespacePrefix(int) | |
*/ | |
public String getNamespacePrefix(int index) { | |
if (cursor instanceof Element) { | |
List list = getNamespaceDeclarations(); | |
return ((NamespaceDeclare) list.get(index)).getPrefix(); | |
} | |
throw new IllegalStateException(Messages.getMessage("XMLSRErr4", "getNamespacePrefix(int)")); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getNamespaceURI(int) | |
*/ | |
public String getNamespaceURI(int index) { | |
if (cursor instanceof Element) { | |
List list = getNamespaceDeclarations(); | |
return ((NamespaceDeclare) list.get(index)).getURI(); | |
} | |
throw new IllegalStateException(Messages.getMessage("XMLSRErr4","getNamespaceURI(int)")); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getNamespaceContext() | |
*/ | |
public NamespaceContext getNamespaceContext() { | |
Element element = null; | |
if (cursor instanceof Element) { | |
element = (Element) cursor; | |
} else { | |
Element parent = (Element) cursor.getParentNode(); | |
if (parent == null) { | |
parent = (Element) nextCursorStack.peek(); | |
} | |
element = (Element) cursor.getParentNode(); | |
} | |
if (element == cacheNCIKey) { | |
return cacheNCI; | |
} | |
cacheNCIKey = element; | |
cacheNCI = new NamespaceContextFromDOM(element); | |
return cacheNCI; | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getEventType() | |
*/ | |
public int getEventType() { | |
return event; | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getText() | |
*/ | |
public String getText() { | |
if (event == XMLStreamReader.CHARACTERS || | |
event == XMLStreamReader.CDATA || | |
event == XMLStreamReader.COMMENT) { | |
return ((CharacterData) cursor).getData(); | |
} | |
throw new IllegalStateException(Messages.getMessage("XMLSRErr4","getText()")); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getTextCharacters() | |
*/ | |
public char[] getTextCharacters() { | |
return getText().toCharArray(); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getTextCharacters(int, char[], int, int) | |
*/ | |
public int getTextCharacters(int sourceStart, char[] target, int targetStart, int length) | |
throws XMLStreamException { | |
String value = getText(); | |
// Calculate the sourceEnd index | |
int sourceEnd = sourceStart + length; | |
if (value.length() < sourceEnd) { | |
sourceEnd = value.length(); | |
} | |
value.getChars(sourceStart, sourceEnd, target, targetStart); | |
return sourceEnd - sourceStart; | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getTextStart() | |
*/ | |
public int getTextStart() { | |
return 0; | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getTextLength() | |
*/ | |
public int getTextLength() { | |
return getText().length(); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getEncoding() | |
*/ | |
public String getEncoding() { | |
return null; | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#hasText() | |
*/ | |
public boolean hasText() { | |
return (event == XMLStreamReader.CHARACTERS || | |
event == XMLStreamReader.CDATA || | |
event == XMLStreamReader.COMMENT); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getLocation() | |
*/ | |
public Location getLocation() { | |
return dummyLocation; | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getName() | |
*/ | |
public QName getName() { | |
if (cursor instanceof Element) { | |
return new QName(cursor.getNamespaceURI(), cursor.getLocalName()); | |
} | |
throw new IllegalStateException(Messages.getMessage("XMLSRErr4","getName()")); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getLocalName() | |
*/ | |
public String getLocalName() { | |
if (cursor instanceof Element) { | |
return cursor.getLocalName(); | |
} | |
throw new IllegalStateException(Messages.getMessage("XMLSRErr4","getLocalName()")); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#hasName() | |
*/ | |
public boolean hasName() { | |
return (isStartElement() || isEndElement()); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getNamespaceURI() | |
*/ | |
public String getNamespaceURI() { | |
if (cursor instanceof Element) { | |
return cursor.getNamespaceURI(); | |
} else { | |
return null; | |
} | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getPrefix() | |
*/ | |
public String getPrefix() { | |
if (cursor instanceof Element) { | |
return cursor.getPrefix(); | |
} else { | |
return null; | |
} | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getVersion() | |
*/ | |
public String getVersion() { | |
return null; | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#isStandalone() | |
*/ | |
public boolean isStandalone() { | |
return false; | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#standaloneSet() | |
*/ | |
public boolean standaloneSet() { | |
return false; | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getCharacterEncodingScheme() | |
*/ | |
public String getCharacterEncodingScheme() { | |
return null; | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getPITarget() | |
*/ | |
public String getPITarget() { | |
return null; | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.stream.XMLStreamReader#getPIData() | |
*/ | |
public String getPIData() { | |
return null; | |
} | |
/** | |
* Sets nextCursor and nextEvent from | |
* using the current cursor and event. | |
*/ | |
private void getNext() throws IllegalStateException { | |
switch (event) { | |
case XMLStreamReader.START_DOCUMENT: { | |
nextCursor = cursor; | |
nextEvent = XMLStreamReader.START_ELEMENT; | |
break; | |
} | |
case XMLStreamReader.START_ELEMENT: { | |
if (cursor.getFirstChild() != null) { | |
nextCursorStack.push(nextCursor); | |
nextCursor = cursor.getFirstChild(); | |
nextEvent = startEvent(nextCursor); | |
} else { | |
nextEvent = XMLStreamReader.END_ELEMENT; | |
} | |
break; | |
} | |
case XMLStreamReader.ATTRIBUTE: { | |
throw new IllegalStateException(Messages.getMessage("XMLSRErr5","ATTRIBUTE")); | |
} | |
case XMLStreamReader.NAMESPACE: { | |
throw new IllegalStateException(Messages.getMessage("XMLSRErr5","NAMESPACE")); | |
} | |
case XMLStreamReader.END_ELEMENT: | |
case XMLStreamReader.CHARACTERS: | |
case XMLStreamReader.CDATA: | |
case XMLStreamReader.COMMENT: | |
case XMLStreamReader.SPACE: | |
case XMLStreamReader.PROCESSING_INSTRUCTION: | |
case XMLStreamReader.ENTITY_REFERENCE: | |
case XMLStreamReader.DTD: | |
{ | |
if (cursor.getNextSibling() != null) { | |
nextCursor = cursor.getNextSibling(); | |
nextEvent = startEvent(nextCursor); | |
} else if (cursor == root) { | |
nextEvent = XMLStreamReader.END_DOCUMENT; | |
} else { | |
// The following does not work with | |
// Axiom Text nodes | |
// nextCursor = cursor.getParentNode(); | |
// This is the reason why a stack is used. | |
nextCursor = nextCursorStack.pop(); | |
nextEvent = XMLStreamReader.END_ELEMENT; | |
} | |
break; | |
} | |
case XMLStreamReader.END_DOCUMENT: { | |
nextCursor = null; | |
nextEvent = -1; | |
} | |
default: | |
throw new IllegalStateException(Messages.getMessage("XMLSRErr5", String.valueOf(event))); | |
} | |
} | |
/** | |
* Returns the start event for this particular node | |
* @param node | |
* @return | |
*/ | |
private int startEvent(Node node) { | |
if (node instanceof ProcessingInstruction) { | |
return XMLStreamReader.PROCESSING_INSTRUCTION; | |
} | |
if (node instanceof CDATASection) { | |
return XMLStreamReader.CDATA; | |
} | |
if (node instanceof Comment) { | |
return XMLStreamReader.COMMENT; | |
} | |
if (node instanceof Text) { | |
if (node instanceof javax.xml.soap.Text) { | |
javax.xml.soap.Text soapText = (javax.xml.soap.Text) node; | |
if (soapText.isComment()) { | |
return XMLStreamReader.COMMENT; | |
} else { | |
return XMLStreamReader.CHARACTERS; | |
} | |
} | |
return XMLStreamReader.CHARACTERS; | |
} | |
if (node instanceof Element) { | |
return XMLStreamReader.START_ELEMENT; | |
} | |
if (node instanceof Attr) { | |
return XMLStreamReader.ATTRIBUTE; | |
} | |
if (node instanceof Document) { | |
return XMLStreamReader.START_DOCUMENT; | |
} | |
if (node instanceof EntityReference) { | |
return XMLStreamReader.ENTITY_REFERENCE; | |
} | |
if (node instanceof DocumentType) { | |
return XMLStreamReader.DTD; | |
} | |
return -1; | |
} | |
// This is the definition of a dummy Location | |
private DummyLocation dummyLocation = new DummyLocation(); | |
private class DummyLocation implements Location { | |
public int getLineNumber() { | |
return -1; | |
} | |
public int getColumnNumber() { | |
return 0; | |
} | |
public int getCharacterOffset() { | |
return 0; | |
} | |
public String getPublicId() { | |
return null; | |
} | |
public String getSystemId() { | |
return null; | |
} | |
} | |
public List getNamespaceDeclarations() { | |
Element element = null; | |
if (cursor instanceof Element) { | |
element = (Element) cursor; | |
} else { | |
return new ArrayList(); | |
} | |
if (element == cacheNDKey) { | |
return cacheND; | |
} | |
cacheNDKey = element; | |
cacheND = new ArrayList(); | |
NamedNodeMap attrs = element.getAttributes(); | |
if (attrs != null) { | |
for (int i=0; i<attrs.getLength(); i++) { | |
Attr attr = (Attr) attrs.item(i); | |
String name = attr.getNodeName(); | |
if (name.startsWith("xmlns")) { | |
String prefix = ""; | |
if (name.startsWith("xmlns:")) { | |
prefix = name.substring(6); | |
} | |
NamespaceDeclare nd = new NamespaceDeclare(prefix, attr.getNodeValue()); | |
cacheND.add(nd); | |
} | |
} | |
} | |
return cacheND; | |
} | |
class NamespaceDeclare { | |
String prefix; | |
String uri; | |
NamespaceDeclare(String prefix, String uri) { | |
this.prefix = prefix; | |
this.uri = uri; | |
} | |
String getPrefix() { | |
return prefix; | |
} | |
String getURI() { | |
return uri; | |
} | |
} | |
Node getNode() { | |
return cursor; | |
} | |
} |