| /* |
| * Copyright (c) 1998, 2020 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 v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // 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; |
| } |
| } |