| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.sling.samples.postservletextensions.internal; |
| |
| import java.util.ArrayList; |
| |
| import javax.jcr.Node; |
| import javax.jcr.PathNotFoundException; |
| import javax.jcr.RepositoryException; |
| import javax.jcr.Value; |
| |
| public class LinkHelper { |
| |
| public LinkHelper() { |
| |
| } |
| |
| public void createSymetricLink(Node n1, Node n2, String name) throws PathNotFoundException, RepositoryException { |
| createLink(n1, n2, name); |
| createLink(n2, n1, name); |
| } |
| |
| public void createLink(Node source, Node target, String name) throws PathNotFoundException, RepositoryException { |
| String targetPath = target.getPath(); |
| ArrayList<String> newSourceLinks = new ArrayList<String>(); |
| if (source.hasProperty(name)) { |
| Value[] sourceLinks = source.getProperty(name).getValues(); |
| for (Value sourceLink : sourceLinks) { |
| newSourceLinks.add(sourceLink.getString()); |
| } |
| } |
| if (!newSourceLinks.contains(targetPath)) { |
| newSourceLinks.add(targetPath); |
| } |
| String[] newSourceLinksArray = new String[newSourceLinks.size()]; |
| source.setProperty(name, newSourceLinks.toArray(newSourceLinksArray)); |
| } |
| |
| public void removeSymetricLink(Node n1, Node n2, String name) throws PathNotFoundException, RepositoryException { |
| removeLink(n1, n2, name); |
| removeLink(n2, n1, name); |
| } |
| |
| public void removeLink(Node source, Node target, String name) throws PathNotFoundException, RepositoryException { |
| String targetPath = target.getPath(); |
| Value[] sourceLinks = source.getProperty(name).getValues(); |
| ArrayList<String> newSourceLinks = new ArrayList<String>(); |
| for (Value sourceLink : sourceLinks) { |
| String link = sourceLink.getString(); |
| if (!link.equals(target.getPath())) { |
| newSourceLinks.add(link); |
| } |
| } |
| String[] newSourceLinksArray = new String[newSourceLinks.size()]; |
| source.setProperty(name, newSourceLinks.toArray(newSourceLinksArray)); |
| } |
| |
| } |