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Posted to axis-cvs@ws.apache.org by ru...@apache.org on 2005/11/27 12:14:46 UTC
svn commit: r349206 - in
/webservices/axis2/trunk/java/modules/saaj/src/org/apache/axis2/om/impl/dom:
DOMNavigator.java DOMStAXWrapper.java
Author: ruchithf
Date: Sun Nov 27 03:14:37 2005
New Revision: 349206
URL: http://svn.apache.org/viewcvs?rev=349206&view=rev
Log:
Porting the llom's OMNavigator into the DOM impl since it is llom specific
Added:
webservices/axis2/trunk/java/modules/saaj/src/org/apache/axis2/om/impl/dom/DOMNavigator.java
webservices/axis2/trunk/java/modules/saaj/src/org/apache/axis2/om/impl/dom/DOMStAXWrapper.java
Added: webservices/axis2/trunk/java/modules/saaj/src/org/apache/axis2/om/impl/dom/DOMNavigator.java
URL: http://svn.apache.org/viewcvs/webservices/axis2/trunk/java/modules/saaj/src/org/apache/axis2/om/impl/dom/DOMNavigator.java?rev=349206&view=auto
==============================================================================
--- webservices/axis2/trunk/java/modules/saaj/src/org/apache/axis2/om/impl/dom/DOMNavigator.java (added)
+++ webservices/axis2/trunk/java/modules/saaj/src/org/apache/axis2/om/impl/dom/DOMNavigator.java Sun Nov 27 03:14:37 2005
@@ -0,0 +1,192 @@
+/*
+ * 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.axis2.om.impl.dom;
+
+import org.apache.axis2.om.OMContainer;
+import org.apache.axis2.om.OMElement;
+import org.apache.axis2.om.OMNode;
+
+/**
+ * Refer to the testClass to find out how to use
+ * features like isNavigable, isComplete and step
+ */
+public class DOMNavigator {
+ /**
+ * Field node
+ */
+ protected OMNode node;
+
+ /**
+ * Field visited
+ */
+ private boolean visited;
+
+ /**
+ * Field next
+ */
+ private OMNode next;
+
+ // root is the starting element. Once the navigator comes back to the
+ // root, the traversal is terminated
+
+ /**
+ * Field root
+ */
+ private OMNode root;
+
+ /**
+ * Field backtracked
+ */
+ private boolean backtracked;
+
+ // flags that tell the status of the navigator
+
+ /**
+ * Field end
+ */
+ private boolean end = false;
+
+ /**
+ * Field start
+ */
+ private boolean start = true;
+
+ /**
+ * Constructor OMNavigator
+ */
+ public DOMNavigator() {
+ }
+
+ /**
+ * Constructor OMNavigator
+ *
+ * @param node
+ */
+ public DOMNavigator(OMNode node) {
+ init(node);
+ }
+
+ /**
+ * Method init
+ *
+ * @param node
+ */
+ public void init(OMNode node) {
+ next = node;
+ root = node;
+ backtracked = false;
+ }
+
+ /**
+ * get the next node
+ *
+ * @return OMnode in the sequence of preorder traversal. Note however that an element node is
+ * treated slightly diffrently. Once the element is passed it returns the same element in the
+ * next encounter as well
+ */
+ public OMNode next() {
+ if (next == null) {
+ return null;
+ }
+ node = next;
+ visited = backtracked;
+ backtracked = false;
+ updateNextNode();
+
+ // set the starting and ending flags
+ if (root.equals(node)) {
+ if (!start) {
+ end = true;
+ } else {
+ start = false;
+ }
+ }
+ return node;
+ }
+
+ /**
+ * Private method to encapsulate the searching logic
+ */
+ private void updateNextNode() {
+ if ((next instanceof OMElement) && !visited) {
+ ElementImpl e = (ElementImpl) next;
+ if (e.firstChild != null) {
+ next = e.firstChild;
+ } else if (e.isComplete()) {
+ backtracked = true;
+ } else {
+ next = null;
+ }
+ } else {
+ OMNode nextSibling = ((ChildNode) next).nextSibling;
+ OMContainer parent = next.getParent();
+ if (nextSibling != null) {
+ next = nextSibling;
+ } else if ((parent != null) && parent.isComplete()) {
+ next = (NodeImpl) parent;
+ backtracked = true;
+ } else {
+ next = null;
+ }
+ }
+ }
+
+ /**
+ * Method visited
+ *
+ * @return
+ */
+ public boolean visited() {
+ return visited;
+ }
+
+ /**
+ * This is a very special method. This allows the navigator to step
+ * once it has reached the existing om. At this point the isNavigable
+ * method will return false but the isComplete method may return false
+ * which means that the navigating the given element is not complete but
+ * the navigator cannot proceed
+ */
+ public void step() {
+ if (!end) {
+ next = node;
+ updateNextNode();
+ }
+ }
+
+ /**
+ * the navigable status
+ *
+ * @return
+ */
+ public boolean isNavigable() {
+ if (end) {
+ return false;
+ } else {
+ return !(next == null);
+ }
+ }
+
+ /**
+ * The completed status
+ *
+ * @return
+ */
+ public boolean isCompleted() {
+ return end;
+ }
+}
Added: webservices/axis2/trunk/java/modules/saaj/src/org/apache/axis2/om/impl/dom/DOMStAXWrapper.java
URL: http://svn.apache.org/viewcvs/webservices/axis2/trunk/java/modules/saaj/src/org/apache/axis2/om/impl/dom/DOMStAXWrapper.java?rev=349206&view=auto
==============================================================================
--- webservices/axis2/trunk/java/modules/saaj/src/org/apache/axis2/om/impl/dom/DOMStAXWrapper.java (added)
+++ webservices/axis2/trunk/java/modules/saaj/src/org/apache/axis2/om/impl/dom/DOMStAXWrapper.java Sun Nov 27 03:14:37 2005
@@ -0,0 +1,1199 @@
+/*
+ * 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.axis2.om.impl.dom;
+
+import org.apache.axis2.om.OMAttribute;
+import org.apache.axis2.om.OMComment;
+import org.apache.axis2.om.OMDocument;
+import org.apache.axis2.om.OMElement;
+import org.apache.axis2.om.OMNamespace;
+import org.apache.axis2.om.OMNode;
+import org.apache.axis2.om.OMText;
+import org.apache.axis2.om.OMXMLParserWrapper;
+import org.apache.axis2.om.impl.llom.exception.OMStreamingException;
+
+import javax.xml.namespace.NamespaceContext;
+import javax.xml.namespace.QName;
+import javax.xml.stream.Location;
+import javax.xml.stream.XMLStreamConstants;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamReader;
+import java.util.Iterator;
+import java.util.Stack;
+
+/**
+ * This is Exactly the same as org.apache.axis2.om.impl.llom.OMStAXWrapper
+ * BUT this uses the org.apache.axis2.om.impl.dom.DOMNavigator
+ *
+ * Note - This class also implements the streaming constants interface
+ * to get access to the StAX constants
+ */
+public class DOMStAXWrapper implements XMLStreamReader, XMLStreamConstants {
+ /**
+ * Field navigator
+ */
+ private DOMNavigator navigator;
+
+ /**
+ * Field builder
+ */
+ private OMXMLParserWrapper builder;
+
+ /**
+ * Field parser
+ */
+ private XMLStreamReader parser;
+
+ /**
+ * Field rootNode
+ */
+ private OMNode rootNode;
+
+ /**
+ * Field isFirst
+ */
+ private boolean isFirst = true;
+
+ // navigable means the output should be taken from the navigator
+ // as soon as the navigator returns a null navigable will be reset
+ // to false and the subsequent events will be taken from the builder
+ // or the parser directly
+
+ /**
+ * Field NAVIGABLE
+ */
+ private static final short NAVIGABLE = 0;
+ private static final short SWITCH_AT_NEXT = 1;
+ private static final short COMPLETED = 2;
+ private static final short SWITCHED = 3;
+ private static final short DOCUMENT_COMPLETE = 4;
+
+
+ /**
+ * Field state
+ */
+ private short state;
+
+ /**
+ * Field currentEvent
+ * Default set to START_DOCUMENT
+ */
+ private int currentEvent = START_DOCUMENT;
+
+ // SwitchingAllowed is set to false by default
+ // this means that unless the user explicitly states
+ // that he wants things not to be cached, everything will
+ // be cached
+
+ /**
+ * Field switchingAllowed
+ */
+ boolean switchingAllowed = false;
+
+ /**
+ * Field elementStack
+ */
+ private Stack elementStack = new Stack();
+
+ // keeps the next event. The parser actually keeps one step ahead to
+ // detect the end of navigation. (at the end of the stream the navigator
+ // returns a null
+
+ /**
+ * Field nextNode
+ */
+ private OMNode nextNode = null;
+
+ // holder for the current node. Needs this to generate events from the current node
+
+ /**
+ * Field currentNode
+ */
+ private OMNode currentNode = null;
+
+ // needs this to refer to the last known node
+
+ /**
+ * Field lastNode
+ */
+ private OMNode lastNode = null;
+
+ private boolean needToThrowEndDocument = false;
+
+ /**
+ * Method setAllowSwitching
+ *
+ * @param b
+ */
+ public void setAllowSwitching(boolean b) {
+ this.switchingAllowed = b;
+ }
+
+ /**
+ * Method isAllowSwitching
+ *
+ * @return
+ */
+ public boolean isAllowSwitching() {
+ return switchingAllowed;
+ }
+
+ /**
+ * When constructing the OMStaxWrapper, the creator must produce the
+ * builder (an instance of the OMXMLparserWrapper of the input) and the
+ * Element Node to start parsing. The wrapper wil parse(proceed) until
+ * the end of the given element. hence care should be taken to pass the
+ * root element if the entire document is needed
+ *
+ * @param builder
+ * @param startNode
+ */
+ public DOMStAXWrapper(OMXMLParserWrapper builder, OMElement startNode) {
+ this(builder, startNode, false);
+ }
+
+ /**
+ * Constructor OMStAXWrapper
+ *
+ * @param builder
+ * @param startNode
+ * @param cache
+ */
+ public DOMStAXWrapper(OMXMLParserWrapper builder, OMElement startNode,
+ boolean cache) {
+
+ // create a navigator
+ this.navigator = new DOMNavigator(startNode);
+ this.builder = builder;
+ this.rootNode = startNode;
+ if (rootNode != null && rootNode.getParent() != null && rootNode.getParent() instanceof OMDocument) {
+ needToThrowEndDocument = true;
+ }
+
+ // initaite the next and current nodes
+ // Note - navigator is written in such a way that it first
+ // returns the starting node at the first call to it
+ currentNode = navigator.next();
+ updateNextNode();
+ switchingAllowed = !cache;
+ }
+
+ /**
+ * @return
+ * @see javax.xml.stream.XMLStreamReader#getPrefix()
+ */
+ public String getPrefix() {
+ String returnStr = null;
+ if (parser != null) {
+ returnStr = parser.getPrefix();
+ } else {
+ if ((currentEvent == START_ELEMENT)
+ || (currentEvent == END_ELEMENT)) {
+ OMNamespace ns = ((OMElement) lastNode).getNamespace();
+ returnStr = (ns == null)
+ ? null
+ : ns.getPrefix();
+ }
+ }
+ return returnStr;
+ }
+
+ /**
+ * @return
+ * @see javax.xml.stream.XMLStreamReader#getNamespaceURI()
+ */
+ public String getNamespaceURI() {
+ String returnStr = null;
+ if (parser != null) {
+ returnStr = parser.getNamespaceURI();
+ } else {
+ if ((currentEvent == START_ELEMENT)
+ || (currentEvent == END_ELEMENT)
+ || (currentEvent == NAMESPACE)) {
+ OMNamespace ns = ((OMElement) lastNode).getNamespace();
+ returnStr = (ns == null)
+ ? null
+ : ns.getName();
+ }
+ }
+ return returnStr;
+ }
+
+ /**
+ * @return
+ * @see javax.xml.stream.XMLStreamReader#hasName()
+ */
+ public boolean hasName() {
+ if (parser != null) {
+ return parser.hasName();
+ } else {
+ return ((currentEvent == START_ELEMENT)
+ || (currentEvent == END_ELEMENT));
+ }
+ }
+
+ /**
+ * @return
+ * @see javax.xml.stream.XMLStreamReader#getLocalName()
+ */
+ public String getLocalName() {
+ String returnStr = null;
+ if (parser != null) {
+ returnStr = parser.getLocalName();
+ } else {
+ if ((currentEvent == START_ELEMENT)
+ || (currentEvent == END_ELEMENT)
+ || (currentEvent == ENTITY_REFERENCE)) {
+ returnStr = ((OMElement) lastNode).getLocalName();
+ }
+ }
+ return returnStr;
+ }
+
+ /**
+ * @return
+ * @see javax.xml.stream.XMLStreamReader#getName()
+ */
+ public QName getName() {
+ QName returnName = null;
+ if (parser != null) {
+ returnName = parser.getName();
+ } else {
+ if ((currentEvent == START_ELEMENT)
+ || (currentEvent == END_ELEMENT)) {
+ returnName = getQName((OMElement) lastNode);
+ }
+ }
+ return returnName;
+ }
+
+ /**
+ * @return
+ * @see javax.xml.stream.XMLStreamReader#hasText()
+ */
+ public boolean hasText() {
+ return ((currentEvent == CHARACTERS) || (currentEvent == DTD)
+ || (currentEvent == ENTITY_REFERENCE)
+ || (currentEvent == COMMENT) || (currentEvent == SPACE));
+ }
+
+ /**
+ * @return
+ * @see javax.xml.stream.XMLStreamReader#getTextLength()
+ */
+ public int getTextLength() {
+ int returnLength = 0;
+ if (parser != null) {
+ returnLength = parser.getTextLength();
+ } else {
+ OMText textNode = (OMText) lastNode;
+ returnLength = textNode.getText().length();
+ }
+ return returnLength;
+ }
+
+ /**
+ * @return
+ * @see javax.xml.stream.XMLStreamReader#getTextStart()
+ */
+ public int getTextStart() {
+ int returnLength = 0;
+ if (parser != null) {
+ returnLength = parser.getTextStart();
+ }
+
+ // Note - this has no relevant method in the OM
+ return returnLength;
+ }
+
+ /**
+ * @param i
+ * @param chars
+ * @param i1
+ * @param i2
+ * @return
+ * @throws XMLStreamException
+ * @see javax.xml.stream.XMLStreamReader#getTextCharacters(int, char[], int, int)
+ */
+ public int getTextCharacters(int i, char[] chars, int i1, int i2)
+ throws XMLStreamException {
+ int returnLength = 0;
+ if (hasText()) {
+ if (parser != null) {
+ try {
+ returnLength = parser.getTextCharacters(i, chars, i1, i2);
+ } catch (XMLStreamException e) {
+ throw new OMStreamingException(e);
+ }
+ }
+
+ // Note - this has no relevant method in the OM
+ }
+ return returnLength;
+ }
+
+ /**
+ * @return
+ * @see javax.xml.stream.XMLStreamReader#getTextCharacters()
+ */
+ public char[] getTextCharacters() {
+ char[] returnArray = null;
+ if (parser != null) {
+ returnArray = parser.getTextCharacters();
+ } else {
+ if (hasText()) {
+ OMText textNode = (OMText) lastNode;
+ String str = textNode.getText();
+ returnArray = str.toCharArray();
+ }
+ }
+ return returnArray;
+ }
+
+ /**
+ * @return
+ * @see javax.xml.stream.XMLStreamReader#getText()
+ */
+ public String getText() {
+ String returnString = null;
+ if (parser != null) {
+ returnString = parser.getText();
+ } else {
+ if (hasText()) {
+ if (lastNode instanceof OMText) {
+ returnString = ((OMText) lastNode).getText();
+ } else if (lastNode instanceof OMComment) {
+ returnString = ((OMComment) lastNode).getValue();
+ }
+ }
+ }
+ return returnString;
+ }
+
+ /**
+ * @return
+ * @see javax.xml.stream.XMLStreamReader#getEventType()
+ */
+
+ // todo this should be improved
+ public int getEventType() {
+ return currentEvent;
+ }
+
+ /**
+ * @param i
+ * @return
+ * @see javax.xml.stream.XMLStreamReader#getNamespaceURI
+ */
+ public String getNamespaceURI(int i) {
+ String returnString = null;
+ if (parser != null) {
+ returnString = parser.getNamespaceURI(i);
+ } else {
+ if (isStartElement() || isEndElement()
+ || (currentEvent == NAMESPACE)) {
+ OMNamespace ns = (OMNamespace) getItemFromIterator(
+ ((OMElement) lastNode).getAllDeclaredNamespaces(), i);
+ returnString = (ns == null)
+ ? null
+ : ns.getName();
+ }
+ }
+ return returnString;
+ }
+
+ /**
+ * @param i
+ * @return
+ * @see javax.xml.stream.XMLStreamReader#getNamespacePrefix
+ */
+ public String getNamespacePrefix(int i) {
+ String returnString = null;
+ if (parser != null) {
+ returnString = parser.getNamespacePrefix(i);
+ } else {
+ if (isStartElement() || isEndElement()
+ || (currentEvent == NAMESPACE)) {
+ OMNamespace ns = (OMNamespace) getItemFromIterator(
+ ((OMElement) lastNode).getAllDeclaredNamespaces(), i);
+ returnString = (ns == null)
+ ? null
+ : ns.getPrefix();
+ }
+ }
+ return returnString;
+ }
+
+ /**
+ * @return
+ * @see javax.xml.stream.XMLStreamReader#getNamespaceCount()
+ */
+ public int getNamespaceCount() {
+ int returnCount = 0;
+ if (parser != null) {
+ returnCount = parser.getNamespaceCount();
+ } else {
+ if (isStartElement() || isEndElement()
+ || (currentEvent == NAMESPACE)) {
+ returnCount =
+ getCount(
+ ((OMElement) lastNode).getAllDeclaredNamespaces());
+ }
+ }
+ return returnCount;
+ }
+
+ /**
+ * @param i
+ * @return
+ * @see javax.xml.stream.XMLStreamReader#isAttributeSpecified
+ */
+ public boolean isAttributeSpecified(int i) {
+ boolean returnValue = false;
+ if (parser != null) {
+ returnValue = parser.isAttributeSpecified(i);
+ } else {
+ if (isStartElement() || (currentEvent == ATTRIBUTE)) {
+
+ // theres nothing to be returned here
+ } else {
+ throw new IllegalStateException(
+ "attribute type accessed in illegal event!");
+ }
+ }
+ return returnValue;
+ }
+
+ /**
+ * @param i
+ * @return
+ * @see javax.xml.stream.XMLStreamReader#getAttributeValue
+ */
+ public String getAttributeValue(int i) {
+ String returnString = null;
+ if (parser != null) {
+ returnString = parser.getAttributeValue(i);
+ } else {
+ if (isStartElement() || (currentEvent == ATTRIBUTE)) {
+ OMAttribute attrib = getAttribute((OMElement) lastNode, i);
+ if (attrib != null) {
+ returnString = attrib.getAttributeValue();
+ }
+ } else {
+ throw new IllegalStateException(
+ "attribute type accessed in illegal event!");
+ }
+ }
+ return returnString;
+ }
+
+ /**
+ * @param i
+ * @return
+ * @see javax.xml.stream.XMLStreamReader#getAttributeType
+ */
+ public String getAttributeType(int i) {
+ String returnString = null;
+ if (parser != null) {
+ returnString = parser.getAttributeType(i);
+ } else {
+ if (isStartElement() || (currentEvent == ATTRIBUTE)) {
+
+ // todo implement this
+ } else {
+ throw new IllegalStateException(
+ "attribute type accessed in illegal event!");
+ }
+ }
+ return returnString;
+ }
+
+ /**
+ * @param i
+ * @return
+ * @see javax.xml.stream.XMLStreamReader#getAttributePrefix
+ */
+ public String getAttributePrefix(int i) {
+ String returnString = null;
+ if (parser != null) {
+ returnString = parser.getAttributePrefix(i);
+ } else {
+ if (isStartElement() || (currentEvent == ATTRIBUTE)) {
+ OMAttribute attrib = getAttribute((OMElement) lastNode, i);
+ if (attrib != null) {
+ OMNamespace nameSpace = attrib.getNamespace();
+ if (nameSpace != null) {
+ returnString = nameSpace.getPrefix();
+ }
+ }
+ } else {
+ throw new IllegalStateException(
+ "attribute prefix accessed in illegal event!");
+ }
+ }
+ return returnString;
+ }
+
+ /**
+ * @param i
+ * @return
+ * @see javax.xml.stream.XMLStreamReader#getAttributeLocalName
+ */
+ public String getAttributeLocalName(int i) {
+ String returnString = null;
+ if (parser != null) {
+ returnString = parser.getAttributeLocalName(i);
+ } else {
+ if (isStartElement() || (currentEvent == ATTRIBUTE)) {
+ OMAttribute attrib = getAttribute((OMElement) lastNode, i);
+ if (attrib != null) {
+ returnString = attrib.getLocalName();
+ }
+ } else {
+ throw new IllegalStateException(
+ "attribute localName accessed in illegal event!");
+ }
+ }
+ return returnString;
+ }
+
+ /**
+ * @param i
+ * @return
+ * @see javax.xml.stream.XMLStreamReader#getAttributeNamespace
+ */
+ public String getAttributeNamespace(int i) {
+ String returnString = null;
+ if (parser != null) {
+ returnString = parser.getAttributeNamespace(i);
+ } else {
+ if (isStartElement() || (currentEvent == ATTRIBUTE)) {
+ OMAttribute attrib = getAttribute((OMElement) lastNode, i);
+ if (attrib != null) {
+ OMNamespace nameSpace = attrib.getNamespace();
+ if (nameSpace != null) {
+ returnString = nameSpace.getName();
+ }
+ }
+ } else {
+ throw new IllegalStateException(
+ "attribute nameSpace accessed in illegal event!");
+ }
+ }
+ return returnString;
+ }
+
+ /**
+ * @param i
+ * @return
+ * @see javax.xml.stream.XMLStreamReader#getAttributeName
+ */
+ public QName getAttributeName(int i) {
+ QName returnQName = null;
+ if (parser != null) {
+ returnQName = parser.getAttributeName(i);
+ } else {
+ if (isStartElement() || (currentEvent == ATTRIBUTE)) {
+ returnQName = getAttribute((OMElement) lastNode, i).getQName();
+ } else {
+ throw new IllegalStateException(
+ "attribute count accessed in illegal event!");
+ }
+ }
+ return returnQName;
+ }
+
+ /**
+ * @return
+ * @see javax.xml.stream.XMLStreamReader#getAttributeCount
+ */
+ public int getAttributeCount() {
+ int returnCount = 0;
+ if (parser != null) {
+ returnCount = parser.getAttributeCount();
+ } else {
+ if (isStartElement() || (currentEvent == ATTRIBUTE)) {
+ OMElement elt = (OMElement) lastNode;
+ returnCount = getCount(elt.getAllAttributes());
+ } else {
+ throw new IllegalStateException(
+ "attribute count accessed in illegal event (" +
+ currentEvent + ")!");
+ }
+ }
+ return returnCount;
+ }
+
+ // todo
+
+ /**
+ * Method getAttributeValue
+ *
+ * @param s
+ * @param s1
+ * @return
+ */
+ public String getAttributeValue(String s, String s1) {
+ String returnString = null;
+ if (parser != null) {
+ returnString = parser.getAttributeValue(s, s1);
+ } else {
+ if (isStartElement() || (currentEvent == ATTRIBUTE)) {
+ QName qname = new QName(s, s1);
+ OMAttribute attrib = ((OMElement) lastNode).getAttribute(qname);
+ if (attrib != null) {
+ returnString = attrib.getAttributeValue();
+ }
+ } else {
+ throw new IllegalStateException(
+ "attribute type accessed in illegal event!");
+ }
+ }
+ return returnString;
+ }
+
+ /**
+ * Method isWhiteSpace
+ *
+ * @return
+ */
+ public boolean isWhiteSpace() {
+ boolean b;
+ if (parser != null) {
+ b = parser.isWhiteSpace();
+ } else {
+ b = (currentEvent == SPACE);
+ }
+ return b;
+ }
+
+ /**
+ * Method isCharacters
+ *
+ * @return
+ */
+ public boolean isCharacters() {
+ boolean b;
+ if (parser != null) {
+ b = parser.isCharacters();
+ } else {
+ b = (currentEvent == CHARACTERS);
+ }
+ return b;
+ }
+
+ /**
+ * Method isEndElement
+ *
+ * @return
+ */
+ public boolean isEndElement() {
+ boolean b;
+ if (parser != null) {
+ b = parser.isEndElement();
+ } else {
+ b = (currentEvent == END_ELEMENT);
+ }
+ return b;
+ }
+
+ /**
+ * @param i
+ * @param s
+ * @param s1
+ * @throws XMLStreamException
+ * @see javax.xml.stream.XMLStreamReader#require(int, String, String)
+ */
+ public void require(int i, String s, String s1) throws XMLStreamException {
+ throw new XMLStreamException();
+ }
+
+ /**
+ * Method isStartElement
+ *
+ * @return
+ */
+ public boolean isStartElement() {
+ boolean b;
+ if (parser != null) {
+ b = parser.isStartElement();
+ } else {
+ b = (currentEvent == START_ELEMENT);
+ }
+ return b;
+ }
+
+ /**
+ * Method getNamespaceURI
+ *
+ * @param s
+ * @return
+ */
+ public String getNamespaceURI(String s) {
+ String returnString = null;
+ if (parser != null) {
+ returnString = parser.getNamespaceURI(s);
+ } else {
+ if (isStartElement() || isEndElement()
+ || (currentEvent == NAMESPACE)) {
+
+ // Nothing to do here! How to get the namespacace references
+ }
+ }
+ return returnString;
+ }
+
+ /**
+ * Method close
+ *
+ * @throws XMLStreamException
+ */
+ public void close() throws XMLStreamException {
+
+ // this doesnot mean anything with respect to the OM
+ if (parser != null) {
+ parser.close();
+ }
+ }
+
+ /**
+ * Method hasNext
+ *
+ * @return
+ * @throws XMLStreamException
+ */
+ public boolean hasNext() throws XMLStreamException {
+ if(needToThrowEndDocument){
+ return !(state == DOCUMENT_COMPLETE);
+ } else {
+ return (state != COMPLETED && currentEvent != END_DOCUMENT);
+ }
+ }
+
+ /**
+ * Not implemented yet
+ *
+ * @return
+ * @throws org.apache.axis2.om.impl.llom.exception.OMStreamingException
+ *
+ * @throws XMLStreamException
+ */
+ public int nextTag() throws XMLStreamException {
+ throw new UnsupportedOperationException();
+ }
+
+ /**
+ * @return
+ * @throws XMLStreamException
+ * @see javax.xml.stream.XMLStreamReader#getElementText()
+ */
+ public String getElementText() throws XMLStreamException {
+ String returnText = "";
+ if (parser != null) {
+ try {
+ returnText = parser.getElementText();
+ } catch (XMLStreamException e) {
+ throw new OMStreamingException(e);
+ }
+ } else {
+ if (currentNode.getType() == OMNode.ELEMENT_NODE) {
+ returnText = ((OMElement)currentNode).getText();
+ }else if (currentNode.getType() == OMNode.TEXT_NODE){
+ returnText = ((OMText)currentNode).getText();
+ }
+ }
+ return returnText;
+ }
+
+ /**
+ * Method next
+ *
+ * @return
+ * @throws XMLStreamException
+ */
+ public int next() throws XMLStreamException {
+ switch (state) {
+ case DOCUMENT_COMPLETE:
+ throw new XMLStreamException("End of the document reached");
+ case COMPLETED:
+ state = DOCUMENT_COMPLETE;
+ currentEvent = END_DOCUMENT;
+ break;
+ case SWITCH_AT_NEXT:
+ state = SWITCHED;
+
+ // load the parser
+ try {
+ parser = (XMLStreamReader) builder.getParser();
+ } catch (Exception e) {
+ throw new XMLStreamException("problem accessing the parser", e);
+ }
+
+ if ((currentEvent == START_DOCUMENT) &&
+ (currentEvent == parser.getEventType())) {
+ currentEvent = parser.next();
+ } else {
+ currentEvent = parser.getEventType();
+ }
+ updateCompleteStatus();
+ break;
+ case NAVIGABLE:
+ currentEvent = generateEvents(currentNode);
+ updateCompleteStatus();
+ updateLastNode();
+ break;
+ case SWITCHED:
+ currentEvent = parser.next();
+ updateCompleteStatus();
+ break;
+ default :
+ throw new OMStreamingException("unsuppported state!");
+ }
+ return currentEvent;
+ }
+
+ /**
+ * Method getProperty
+ *
+ * @param s
+ * @return
+ * @throws IllegalArgumentException
+ */
+ public Object getProperty(String s) throws IllegalArgumentException {
+ throw new UnsupportedOperationException();
+ }
+
+ /**
+ * This is a very important method. this keeps the
+ * navigator one step ahead and pushes the navigator
+ * one event ahead. If the nextNode is null then navigable is set to false;
+ * At the same time the parser and builder are set up for the upcoming event
+ * generation
+ *
+ * @throws XMLStreamException
+ */
+ private void updateLastNode() throws XMLStreamException {
+ lastNode = currentNode;
+ currentNode = nextNode;
+ try {
+ updateNextNode();
+ } catch (Exception e) {
+ throw new XMLStreamException(e);
+ }
+ }
+
+ /**
+ * Method updateNextNode
+ */
+ private void updateNextNode() {
+ if (navigator.isNavigable()) {
+ nextNode = navigator.next();
+ } else {
+ if (!switchingAllowed) {
+ if (navigator.isCompleted()) {
+ nextNode = null;
+
+ } else {
+ builder.next();
+ navigator.step();
+ nextNode = navigator.next();
+ }
+ } else {
+
+ // reset caching (the default is ON so it was not needed in the
+ // earlier case!
+ builder.setCache(false);
+ state = SWITCH_AT_NEXT;
+ }
+ }
+ }
+
+ /**
+ * Method updateCompleteStatus
+ */
+ private void updateCompleteStatus() {
+ if (state == NAVIGABLE) {
+ if (rootNode == currentNode) {
+ if (isFirst) {
+ isFirst = false;
+ } else {
+ state = COMPLETED;
+ }
+ }
+ } else {
+ state = (currentEvent == END_DOCUMENT)
+ ? DOCUMENT_COMPLETE
+ : state;
+ }
+ }
+
+ /**
+ * Method getNamespaceContext
+ *
+ * @return
+ */
+ public NamespaceContext getNamespaceContext() {
+ throw new UnsupportedOperationException();
+ }
+
+ /**
+ * Method getEncoding
+ *
+ * @return
+ */
+ public String getEncoding() {
+ return null;
+ }
+
+ /**
+ * Method getLocation
+ *
+ * @return
+ */
+ public Location getLocation() {
+ throw new UnsupportedOperationException();
+ }
+
+ /**
+ * Method getVersion
+ *
+ * @return
+ */
+ public String getVersion() {
+ return "1.0"; //todo put the constant
+ }
+
+
+ /**
+ * Method isStandalone
+ *
+ * @return
+ */
+ public boolean isStandalone() {
+ return true;
+ }
+
+ /**
+ * Method standaloneSet
+ *
+ * @return
+ */
+ public boolean standaloneSet() {
+ return false;
+ }
+
+ /**
+ * Method getCharacterEncodingScheme
+ *
+ * @return
+ */
+ public String getCharacterEncodingScheme() {
+ return "utf-8";
+ }
+
+ /**
+ * Method getPITarget
+ *
+ * @return
+ */
+ public String getPITarget() {
+ throw new UnsupportedOperationException();
+ }
+
+ /**
+ * Method getPIData
+ *
+ * @return
+ */
+ public String getPIData() {
+ throw new UnsupportedOperationException();
+ }
+
+ /*
+ *
+ * ################################################################
+ * Generator methods for the OMNodes returned by the navigator
+ * ################################################################
+ *
+ */
+
+ /**
+ * Method generateEvents
+ *
+ * @param node
+ * @return
+ */
+ private int generateEvents(OMNode node) {
+ int returnEvent = 0;
+ int nodeType = node.getType();
+ switch (nodeType) {
+ case OMNode.ELEMENT_NODE:
+ OMElement element = (OMElement) node;
+ returnEvent = generateElementEvents(element);
+ break;
+ case OMNode.TEXT_NODE:
+ returnEvent = generateTextEvents();
+ break;
+ case OMNode.COMMENT_NODE:
+ returnEvent = generateCommentEvents();
+ break;
+ case OMNode.CDATA_SECTION_NODE:
+ returnEvent = generateCdataEvents();
+ break;
+ default :
+ break; // just ignore any other nodes
+ }
+ return returnEvent;
+ }
+
+ /**
+ * Method generateElementEvents
+ *
+ * @param elt
+ * @return
+ */
+ private int generateElementEvents(OMElement elt) {
+ int returnValue = START_ELEMENT;
+ if (!elementStack.isEmpty() && elementStack.peek().equals(elt)) {
+ returnValue = END_ELEMENT;
+ elementStack.pop();
+ } else {
+ elementStack.push(elt);
+ }
+ return returnValue;
+ }
+
+ /**
+ * Method generateTextEvents
+ *
+ * @return
+ */
+ private int generateTextEvents() {
+ return CHARACTERS;
+ }
+
+ /**
+ * Method generateCommentEvents
+ *
+ * @return
+ */
+ private int generateCommentEvents() {
+ return COMMENT;
+ }
+
+ /**
+ * Method generateCdataEvents
+ *
+ * @return
+ */
+ private int generateCdataEvents() {
+ return CDATA;
+ }
+
+ /*
+ * ####################################################################
+ * Other helper methods
+ * ####################################################################
+ */
+
+ /**
+ * helper method
+ *
+ * @param it
+ * @return
+ */
+ private int getCount(Iterator it) {
+ int count = 0;
+ if (it != null) {
+ while (it.hasNext()) {
+ it.next();
+ count++;
+ }
+ }
+ return count;
+ }
+
+ /**
+ * Helper method
+ *
+ * @param it
+ * @param index
+ * @return
+ */
+ private Object getItemFromIterator(Iterator it, int index) {
+ int count = 0;
+ Object returnObject = null;
+ boolean found = false;
+ if (it != null) {
+ while (it.hasNext()) {
+ returnObject = it.next();
+ if (index == count++) {
+ found = true;
+ break;
+ }
+ }
+ }
+ if (found) {
+ return returnObject;
+ } else {
+ return null;
+ }
+ }
+
+ /**
+ * Helper method
+ *
+ * @param element
+ * @return
+ */
+ private QName getQName(OMElement element) {
+ QName returnName;
+ OMNamespace ns = element.getNamespace();
+ String localPart = element.getLocalName();
+ if (ns != null) {
+ String prefix = ns.getPrefix();
+ String uri = ns.getName();
+ if ((prefix == null) || prefix.equals("")) {
+ returnName = new QName(uri, localPart);
+ } else {
+ returnName = new QName(uri, localPart, prefix);
+ }
+ } else {
+ returnName = new QName(localPart);
+ }
+ return returnName;
+ }
+
+ /**
+ * @param elt
+ * @param index
+ * @return
+ */
+ private OMAttribute getAttribute(OMElement elt, int index) {
+ OMAttribute returnAttrib = null;
+ if (elt != null) {
+ returnAttrib =
+ (OMAttribute) getItemFromIterator(elt.getAllAttributes(),
+ index);
+ }
+ return returnAttrib;
+ }
+
+ public void setParser(XMLStreamReader parser) {
+ this.parser = parser;
+ }
+}