/******************************************************************************* | |
* Copyright (c) 1998, 2013 Oracle and/or its affiliates. All rights reserved. | |
* This program and the accompanying materials are made available under the | |
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0 | |
* which accompanies this distribution. | |
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html | |
* and the Eclipse Distribution License is available at | |
* http://www.eclipse.org/org/documents/edl-v10.php. | |
* | |
* Contributors: | |
* Oracle - initial API and implementation from Oracle TopLink | |
******************************************************************************/ | |
package org.eclipse.persistence.internal.codegen; | |
import org.eclipse.persistence.sessions.Project; | |
import org.eclipse.persistence.descriptors.ClassDescriptor; | |
import java.util.*; | |
/** | |
* INTERNAL: | |
*/ | |
public class InheritanceHierarchyBuilder { | |
/** | |
* INTERNAL: | |
* Based on a class name either return a pre-existing node from the hierarchyTree or build one and | |
* add it to the tree. | |
*/ | |
public static HierarchyNode getNodeForClass(String className, Hashtable hierarchyTree) { | |
HierarchyNode node = (HierarchyNode)hierarchyTree.get(className); | |
if (node == null) { | |
node = new HierarchyNode(className); | |
hierarchyTree.put(className, node); | |
} | |
return node; | |
} | |
public static Hashtable buildInheritanceHierarchyTree(Project project) { | |
Map descriptors = project.getDescriptors(); | |
Hashtable hierarchyTree = new Hashtable(descriptors.size()); | |
for (Iterator descriptorIterator = descriptors.values().iterator(); | |
descriptorIterator.hasNext();) { | |
ClassDescriptor descriptor = (ClassDescriptor)descriptorIterator.next(); | |
String className = descriptor.getJavaClassName(); | |
if (className == null) { | |
className = descriptor.getJavaClass().getName(); | |
} | |
HierarchyNode node = getNodeForClass(className, hierarchyTree); | |
if (descriptor.hasInheritance() && (descriptor.getInheritancePolicy().getParentClassName() != null)) { | |
HierarchyNode parentNode = getNodeForClass(descriptor.getInheritancePolicy().getParentClassName(), hierarchyTree); | |
node.setParent(parentNode); | |
} | |
} | |
return hierarchyTree; | |
} | |
} |