001package org.apache.maven.lifecycle;
002
003/*
004 * Licensed to the Apache Software Foundation (ASF) under one
005 * or more contributor license agreements.  See the NOTICE file
006 * distributed with this work for additional information
007 * regarding copyright ownership.  The ASF licenses this file
008 * to you under the Apache License, Version 2.0 (the
009 * "License"); you may not use this file except in compliance
010 * with the License.  You may obtain a copy of the License at
011 *
012 *  http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing,
015 * software distributed under the License is distributed on an
016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017 * KIND, either express or implied.  See the License for the
018 * specific language governing permissions and limitations
019 * under the License.
020 */
021
022import java.io.IOException;
023import java.util.Iterator;
024
025import org.apache.commons.jxpath.JXPathContext;
026import org.apache.commons.jxpath.JXPathNotFoundException;
027import org.apache.commons.jxpath.ri.JXPathContextReferenceImpl;
028import org.apache.maven.plugin.MojoExecution;
029import org.apache.maven.project.harness.Xpp3DomPointerFactory;
030
031public class MojoExecutionXPathContainer
032{
033    private JXPathContext context;
034
035    static
036    {
037        JXPathContextReferenceImpl.addNodePointerFactory( new Xpp3DomPointerFactory() );
038    }
039
040    public MojoExecutionXPathContainer( MojoExecution mojoExecution )
041        throws IOException
042    {
043        context = JXPathContext.newContext( mojoExecution );
044    }
045
046        public Iterator<?> getIteratorForXPathExpression( String expression )
047    {
048        return context.iterate( expression );
049    }
050
051    public boolean containsXPathExpression( String expression )
052    {
053        return context.getValue( expression ) != null;
054    }
055
056    public Object getValue( String expression )
057    {
058        try
059        {
060            return context.getValue( expression );
061        }
062        catch ( JXPathNotFoundException e )
063        {
064            return null;
065        }
066    }
067
068    public boolean xPathExpressionEqualsValue( String expression, String value )
069    {
070        return context.getValue( expression ) != null && context.getValue( expression ).equals( value );
071    }
072}