//------------------------------------------------------------------------------
// Copyright (c) 2005, 2006 IBM Corporation and others.
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// which accompanies this distribution, and is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// Contributors:
// IBM Corporation - initial implementation
//------------------------------------------------------------------------------
package org.eclipse.epf.library.util;
import java.util.ArrayList;
import java.util.EmptyStackException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Stack;
import org.eclipse.emf.common.util.URI;
import org.eclipse.epf.common.serviceability.Logger;
import org.eclipse.epf.common.xml.AbstractSAXParser;
import org.eclipse.epf.persistence.MultiFileXMISaveImpl.MyEscape;
import org.xml.sax.Attributes;
/**
* This class parses an XMI file, and stores the data in a HashMap called an
* "eMap".
* <p>
* An eMap has 4 entries:
* <li>"tag" - the element's tag</li>
* <li>"attributes" - an ArrayList of the XML attributes. Each attribute is of
* the form (attribute name),(attribute value)</li>
* <li>"content" - the element's content</li>
* <li>"children" - an ArrayList of the element's sub-elements. Each child is
* an eMap.</li>
* </p>
* <p>
* The root element's eMap is referenced by TNGSAXParserXMI.xmiMap
* </p>
*
* @author Jeff Hardy
* @since 1.0
*/
public class SAXParserXMI extends AbstractSAXParser {
public HashMap xmiMap;
// private int elementCount = 0;
private Stack stack;
private MyEscape escape = new MyEscape();
public SAXParserXMI(Logger logger) {
// validating is false since we don't have a DTD
super(logger, false);
}
/**
* Called when the XML parser starts to parse the document.
*/
public void startDocument() {
super.startDocument();
stack = new Stack();
}
/**
*
*/
public void endDocument() {
super.endDocument();
}
/**
*
*/
public void startElement(String namespaceURL, String localName,
String qname, Attributes attributes) {
HashMap eMap = new HashMap();
try {
HashMap parent = (HashMap) stack.peek();
((ArrayList) parent.get("children")).add(eMap); //$NON-NLS-1$
} catch (EmptyStackException e) {
xmiMap = eMap;
}
// put tag
eMap.put("tag", qname); //$NON-NLS-1$
// put attributeMap
List attributeList = new ArrayList();
if (attributes.getLength() > 0) {
for (int i = 0; i < attributes.getLength(); i++) {
attributeList.add(attributes.getQName(i)
+ "," + attributes.getValue(i)); //$NON-NLS-1$
}
}
strBuf = new StringBuffer();
eMap.put("attributes", attributeList); //$NON-NLS-1$
eMap.put("children", new ArrayList()); //$NON-NLS-1$
stack.push(eMap);
}
public void endElement(String namespaceURL, String localName, String qname) {
try {
HashMap eMap = (HashMap) stack.peek();
List attributeList = (ArrayList) eMap.get("attributes"); //$NON-NLS-1$
if (attributeList.size() == 0)
if (strBuf.toString().trim().length() > 0) {
eMap.put("content", escape.convertLines(strBuf.toString())); //$NON-NLS-1$
}
} catch (EmptyStackException e) {
e.printStackTrace();
}
stack.pop();
}
/**
* For use with TNGSAXParserXMI. Find a guid's element tag within the XMI
* file.
*
* @param elementTag
* @param guid
* @param xmiMap
* @return
*/
public static HashMap findElementTagofGuid(String elementTag, String guid,
HashMap xmiMap) {
HashMap eMap = SAXParserXMI.findGuid(guid, xmiMap);
// we have hashmap of the guid's element - search children for the
// elementTag
Iterator iter = ((ArrayList) eMap.get("children")).iterator(); //$NON-NLS-1$
while (iter.hasNext()) {
HashMap childMap = (HashMap) iter.next();
if (SAXParserXMI.getTag(childMap).equals(elementTag))
return childMap;
}
return null;
}
/**
* For use with TNGSAXParserXMI. searches eMap's children for elementTag
*
* @param elementTag
* @param eMap
* @return HashMap
*/
public static HashMap getChildElementTag(String elementTag, HashMap eMap) {
// search children for the elementTag
Iterator iter = ((ArrayList) eMap.get("children")).iterator(); //$NON-NLS-1$
while (iter.hasNext()) {
HashMap childMap = (HashMap) iter.next();
if (SAXParserXMI.getTag(childMap).equals(elementTag))
return childMap;
}
return null;
}
/**
* For use with TNGSAXParserXMI. returns Tag of element. Does not return
* null, returns "" instead.
*
* @param eMap
* @return String
*/
public static String getTag(HashMap eMap) {
String tag = ""; //$NON-NLS-1$
if (eMap != null)
tag = (String) eMap.get("tag"); //$NON-NLS-1$
if (tag != null)
return tag;
return ""; //$NON-NLS-1$
}
/**
* For use with TNGSAXParserXMI. gets content of element - can be null
*
* @param eMap
* @return String
*/
public static String getElementContent(HashMap eMap) {
String content = null;
if (eMap != null)
content = (String) eMap.get("content"); //$NON-NLS-1$
return content;
}
/**
* Finds a guid contained within the given eMap - can return null
*
* @param guid
* guid to find
* @param eMap
* use TNGSAXParserXMI.xmiMap, or a sub-eMap
* @return HashMap
*/
public static HashMap findGuid(String guid, HashMap eMap) {
ArrayList attList = (ArrayList) eMap.get("attributes"); //$NON-NLS-1$
if (guid.equals(SAXParserXMI.getGuidOfList(attList)))
return eMap;
Iterator iter = ((ArrayList) eMap.get("children")).iterator(); //$NON-NLS-1$
while (iter.hasNext()) {
HashMap childMap = (HashMap) iter.next();
HashMap result = findGuid(guid, childMap);
if (result != null)
return result;
}
return null;
}
/**
* For use with TNGSAXParserXMI.
*
* @param attList
* @return String
*/
public static String getGuidOfList(ArrayList attList) {
Iterator iter = attList.iterator();
while (iter.hasNext()) {
String attpair = (String) iter.next();
String attname = attpair.substring(0, attpair.indexOf(",")); //$NON-NLS-1$
String attval = attpair.substring(attpair.indexOf(",") + 1); //$NON-NLS-1$
if (attname.equals("guid")) //$NON-NLS-1$
return attval;
}
return null;
}
/**
* For use with TNGSAXParserXMI when parsing resmgr.xmi
*
* @param attList
* @return String
*/
public static String getIdOfList(ArrayList attList) {
Iterator iter = attList.iterator();
while (iter.hasNext()) {
String attpair = (String) iter.next();
String attname = attpair.substring(0, attpair.indexOf(",")); //$NON-NLS-1$
String attval = attpair.substring(attpair.indexOf(",") + 1); //$NON-NLS-1$
if (attname.equals("id")) //$NON-NLS-1$
return attval;
}
return null;
}
/**
*
* @param eMap
* @return URI
*/
public static URI getPresentationUriOfElement(HashMap eMap) {
if (eMap == null)
return null;
String tag = SAXParserXMI.getTag(eMap);
// // check to see if this is an breakdownElement - if so, return null
// // because while breakdownElements have presentations, they are not
// used.
// if (tag.equals("breakdownElements")) {
// return null;
// }
// // processes don't use their presentation either
// if (tag.equals("process")) {
// return null;
// }
// look for childPackage presentations, which are an href attribute
if (tag.equals("childPackages")) { //$NON-NLS-1$
ArrayList attList = (ArrayList) eMap.get("attributes"); //$NON-NLS-1$
Iterator iter = attList.iterator();
while (iter.hasNext()) {
String attpair = (String) iter.next();
String attname = attpair.substring(0, attpair.indexOf(",")); //$NON-NLS-1$
String attval = attpair.substring(attpair.indexOf(",") + 1); //$NON-NLS-1$
if (attname.equals("href")) { //$NON-NLS-1$
try {
URI uri = URI.createURI(attval);
return uri;
} catch (Exception ex) {
ex.printStackTrace();
}
// if (attval.indexOf("uma://") != -1) {
// String presId =
// attval.substring(attval.indexOf("uma://")+6);
// return presId;
// }
}
}
}
ArrayList childList = (ArrayList) eMap.get("children"); //$NON-NLS-1$
Iterator iter = childList.iterator();
while (iter.hasNext()) {
HashMap childMap = (HashMap) iter.next();
tag = SAXParserXMI.getTag(childMap);
if (tag.equals("presentation")) { // || //$NON-NLS-1$
// tag.equals("variabilityBasedOnElement"))
// { //$NON-NLS-1$ //$NON-NLS-2$
ArrayList attList = (ArrayList) childMap.get("attributes"); //$NON-NLS-1$
Iterator attIter = attList.iterator();
while (attIter.hasNext()) {
String attpair = (String) attIter.next();
String attname = attpair.substring(0, attpair.indexOf(",")); //$NON-NLS-1$
String attval = attpair.substring(attpair.indexOf(",") + 1); //$NON-NLS-1$
if (attname.equals("href")) { //$NON-NLS-1$
try {
URI uri = URI.createURI(attval);
return uri;
} catch (Exception ex) {
ex.printStackTrace();
}
// if (attval.indexOf("uma://") != -1) {
// String presId =
// attval.substring(attval.indexOf("uma://")+6);
// return presId;
// }
}
}
// if (attList.size() == 0)
// continue;
// String attpair = (String)attList.get(0);
// // String attname = attpair.substring(0,
// attpair.indexOf(","));
// String attval = attpair.substring(attpair.indexOf(",")+1);
// if (attval.indexOf("uma://") != -1) {
// String presId = attval.substring(attval.indexOf("uma://")+6);
// return presId;
// }
}
}
return null;
}
/**
*
* @param eMap
* @param attributeName
* @param attributeValue
* @return HashMap
*/
public static HashMap findElementByAttribute(HashMap eMap,
String attributeName, String attributeValue) {
// search this eMap's children
Iterator iter = ((ArrayList) eMap.get("children")).iterator(); //$NON-NLS-1$
while (iter.hasNext()) {
HashMap childMap = (HashMap) iter.next();
HashMap result = findElementByAttribute(childMap, attributeName,
attributeValue);
if (result != null)
return result;
}
// search this eMap
iter = ((ArrayList) eMap.get("attributes")).iterator(); //$NON-NLS-1$
while (iter.hasNext()) {
String attpair = (String) iter.next();
String attname = attpair.substring(0, attpair.indexOf(",")); //$NON-NLS-1$
String attval = attpair.substring(attpair.indexOf(",") + 1); //$NON-NLS-1$
if (attname.equals(attributeName) && attval.equals(attributeValue))
return eMap;
}
return null;
}
/**
*
* @param eMap
* @param attributeName
* @return String
*/
public static String getAttributeOfElement(HashMap eMap,
String attributeName) {
Iterator iter = ((ArrayList) eMap.get("attributes")).iterator(); //$NON-NLS-1$
while (iter.hasNext()) {
String attpair = (String) iter.next();
String attname = attpair.substring(0, attpair.indexOf(",")); //$NON-NLS-1$
String attval = attpair.substring(attpair.indexOf(",") + 1); //$NON-NLS-1$
if (attname.equals(attributeName))
return attval;
}
return null;
}
}