1   package org.apache.maven.lifecycle;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *  http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import java.io.IOException;
23  import java.util.Iterator;
24  
25  import org.apache.commons.jxpath.JXPathContext;
26  import org.apache.commons.jxpath.JXPathNotFoundException;
27  import org.apache.commons.jxpath.ri.JXPathContextReferenceImpl;
28  import org.apache.maven.plugin.MojoExecution;
29  import org.apache.maven.project.harness.Xpp3DomPointerFactory;
30  
31  public class MojoExecutionXPathContainer
32  {
33      private JXPathContext context;
34  
35      private MojoExecution mojoExecution;
36  
37      static
38      {
39          JXPathContextReferenceImpl.addNodePointerFactory( new Xpp3DomPointerFactory() );
40      }
41  
42      public MojoExecutionXPathContainer( MojoExecution mojoExecution )
43          throws IOException
44      {
45          this.mojoExecution = mojoExecution;
46          context = JXPathContext.newContext( mojoExecution );
47      }
48  
49  	public Iterator<?> getIteratorForXPathExpression( String expression )
50      {
51          return context.iterate( expression );
52      }
53  
54      public boolean containsXPathExpression( String expression )
55      {
56          return context.getValue( expression ) != null;
57      }
58  
59      public Object getValue( String expression )
60      {
61          try
62          {
63              return context.getValue( expression );
64          }
65          catch ( JXPathNotFoundException e )
66          {
67              return null;
68          }
69      }
70  
71      public boolean xPathExpressionEqualsValue( String expression, String value )
72      {
73          return context.getValue( expression ) != null && context.getValue( expression ).equals( value );
74      }
75  }