Java tutorial
package org.apache.maven.lifecycle; /* * 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. */ import java.io.IOException; import java.util.Iterator; import org.apache.commons.jxpath.JXPathContext; import org.apache.commons.jxpath.JXPathNotFoundException; import org.apache.commons.jxpath.ri.JXPathContextReferenceImpl; import org.apache.maven.plugin.MojoExecution; import org.apache.maven.project.harness.Xpp3DomPointerFactory; public class MojoExecutionXPathContainer { private JXPathContext context; static { JXPathContextReferenceImpl.addNodePointerFactory(new Xpp3DomPointerFactory()); } public MojoExecutionXPathContainer(MojoExecution mojoExecution) throws IOException { context = JXPathContext.newContext(mojoExecution); } public Iterator<?> getIteratorForXPathExpression(String expression) { return context.iterate(expression); } public boolean containsXPathExpression(String expression) { return context.getValue(expression) != null; } public Object getValue(String expression) { try { return context.getValue(expression); } catch (JXPathNotFoundException e) { return null; } } public boolean xPathExpressionEqualsValue(String expression, String value) { return context.getValue(expression) != null && context.getValue(expression).equals(value); } }