org.openxma.xmadsl.LinkerUtil Maven / Gradle / Ivy

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package org.openxma.xmadsl;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import org.eclipse.emf.ecore.EObject;
import org.openxma.dsl.common.logging.LogUtil;
import org.openxma.dsl.pom.naming.PomNameProvider;

/**
 * Utility for linking
 * 
 */
public class LinkerUtil {
		
	private static final HashMap> elementsWithReferences = new HashMap>();
	
	/**
	 * Get a list with the names of all done linkings for the rootNode
	 * 
	 * @param rootNode
	 * @return
	 */
	public static ArrayList getLinkingsDone(EObject eObj) {
		
		if (eObj == null) {
			throw new IllegalArgumentException("Root node has to be defined");
		}
		
		ArrayList list = elementsWithReferences.get(eObj);
		if (list == null) {
			list = new ArrayList();
			elementsWithReferences.put(eObj,list);
		}
		
		return list;
	}
	
	/**
	 * 
	 * @param rootNode
	 */
	public static void initLinker(EObject rootNode) {
		
		elementsWithReferences.clear();
		//LogUtil.log("Init linker "+rootNode.getClass()+rootNode.toString());
	}
	
	public static boolean equalsObject(EObject e1, EObject e2) {
		if (e1.getClass() != e2.getClass()) {	
			return false;
		} else {
			 String id1 = getId(e1);
			 String	id2 = getId(e2);
			if (id1 != null && id2 != null) {
				return id1.equals(id2);
			} else {
				if (id1==null) LogUtil.log("!! Id not found: e1= "+e1.getClass()+", id= "+id1);					
				if (id2==null) LogUtil.log("!! Id not found: e2= "+e2.getClass()+", id= "+id2);
				return 	false;
			}
		}
	}
	
	public static String getId(EObject obj) {
		return PomNameProvider.getXmaName(obj);
	}
	
	/**
	 * 
	 * @param obj
	 * @return
	 */
	public static List getModelObjectPath(EObject obj) {		
		if (obj.eContainer() != null) { 
			List list =getModelObjectPath(obj.eContainer());
			list.add(obj);
			return list;
		} else {
			List newList = new ArrayList();
			newList.add(obj);			
			return newList;			
		}
	}
	
	/**
	 * 
	 * @param currentElement
	 * @param path
	 * @param index
	 * @return
	 */
	public static EObject findXMAPathElement(EObject currentElement, List path) {
		return findXMAPathElement(currentElement,path,0);		
	}
	public static EObject findXMAPathElement(EObject currentElement, List path, Integer index) {
		EObject pathNodeToMatch = path.get(index);		
		if (LinkerUtil.equalsObject(currentElement,pathNodeToMatch)) {
			if (index < path.size()-1) {
				return findXMAPathElementInChildren(currentElement,path,index+1);
			} else{
				return currentElement;
			}
		}
		return null;
	}
							
	/**
	 *
	 */		
	public static EObject findXMAPathElementInChildren(EObject currentElement, List path, Integer index) {

		EObject pathNodeToMatch = path.get(index);
		List currentChildren = currentElement.eContents();

		EObject matchingChild = null;		
		for (EObject elem : currentChildren) {
			if (LinkerUtil.equalsObject(elem,pathNodeToMatch)) {
				matchingChild = elem;
				break;
			}
		}
							
		//logListElements("currentChildren",currentChildren)->					
		if (matchingChild != null) {
			return findXMAPathElement(matchingChild,path,index);
		}
		return null;	
	}	
}