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1   package com.codehaus.mojo.vfs;
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.util.ArrayList;
23  import java.util.List;
24  
25  import org.apache.maven.plugins.annotations.Parameter;
26  
27  public abstract class AbstractVfsActionMojo
28      extends AbstractVfsMojo
29  {
30  
31      /**
32       * VFS configuration using single fileset
33       *
34       * @since 1.0 beta 1
35       */
36      @Parameter( required = false )
37      protected MojoVfsFileSet fileset;
38  
39      /**
40       * VFS configuration using multiple filesets
41       *
42       * @since 1.0
43       */
44      @Parameter( required = false )
45      protected List<MojoVfsFileSet> filesets;
46  
47      protected boolean initialize()
48      {
49          if ( this.skip )
50          {
51              this.getLog().info( "Skip VFS action" );
52              return false;
53          }
54  
55          if ( filesets == null )
56          {
57              filesets = new ArrayList<MojoVfsFileSet>();
58          }
59  
60          if ( fileset != null )
61          {
62              filesets.add( fileset );
63          }
64  
65          if ( filesets.isEmpty() )
66          {
67              this.getLog().info( "Skip VFS action due to empty configuration." );
68              return false;
69          }
70  
71          return true;
72      }
73  
74  }