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/***************************************************************************************************
* Copyright (c) 2003, 2004 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 API and implementation
**************************************************************************************************/
package org.eclipse.wst.common.internal.emf.resource;
import java.util.Iterator;
import java.util.List;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
public class TranslatorPath {
protected Translator[] mapInfoPath;
/**
* Construct with an array of Translator that specifies the path to follow from an object to
* another object
*/
public TranslatorPath(Translator[] path) {
mapInfoPath = path;
}
public List findObjects(EObject startObject) {
Object cur = startObject;
for (int i = 0; i < mapInfoPath.length; i++) {
Translator curMap = mapInfoPath[i];
if (cur instanceof EObject) {
EStructuralFeature curAttr = curMap.getFeature();
if (curAttr == Translator.CONTAINER_FEATURE) {
curAttr = ((EObject) cur).eContainmentFeature();
cur = ((EObject) cur).eContainer();
} else if (curAttr == Translator.ROOT_FEATURE) {
cur = ((TranslatorResource) startObject.eResource()).getRootObject();
} else {
cur = ((EObject) cur).eGet(curAttr);
}
if (curMap.isMultiValued()) {
return (List) cur;
}
}
}
return null;
}
public Object findObject(EObject startObject, Object matchValue) {
List objects = findObjects(startObject);
if (objects == null)
return null;
return findObject(objects, getLastMap(), matchValue);
}
private Object findObject(List objectList, Translator map, Object matchValue) {
for (Iterator iter = objectList.iterator(); iter.hasNext();) {
EObject mofObject = (EObject) iter.next();
Object curMatchValue = mofObject.eGet(map.getFeature());
if (matchValue.equals(curMatchValue))
return mofObject;
}
return null;
}
public Translator getLastMap() {
return mapInfoPath[mapInfoPath.length - 1];
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#toString()
*/
public String toString() {
StringBuffer sb = new StringBuffer();
String cn = getClass().getName();
int i = cn.lastIndexOf('.');
cn = cn.substring(++i, cn.length());
sb.append(cn);
sb.append('(');
sb.append(mapInfoPath[0]);
for (int j = 1; j < mapInfoPath.length; j++) {
sb.append('\n');
sb.append(mapInfoPath[j]);
}
sb.append(')');
return sb.toString();
}
}
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