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1   package org.apache.maven.model.profile.activation;
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 org.apache.maven.model.Activation;
23  import org.apache.maven.model.ActivationProperty;
24  import org.apache.maven.model.Profile;
25  import org.apache.maven.model.building.ModelProblemCollector;
26  import org.apache.maven.model.building.ModelProblem.Severity;
27  import org.apache.maven.model.building.ModelProblem.Version;
28  import org.apache.maven.model.building.ModelProblemCollectorRequest;
29  import org.apache.maven.model.profile.ProfileActivationContext;
30  import org.codehaus.plexus.component.annotations.Component;
31  import org.codehaus.plexus.util.StringUtils;
32  
33  /**
34   * Determines profile activation based on the existence or value of some execution property.
35   *
36   * @author Benjamin Bentmann
37   * @see ActivationProperty
38   */
39  @Component( role = ProfileActivator.class, hint = "property" )
40  public class PropertyProfileActivator
41      implements ProfileActivator
42  {
43  
44      @Override
45      public boolean isActive( Profile profile, ProfileActivationContext context, ModelProblemCollector problems )
46      {
47          Activation activation = profile.getActivation();
48  
49          if ( activation == null )
50          {
51              return false;
52          }
53  
54          ActivationProperty property = activation.getProperty();
55  
56          if ( property == null )
57          {
58              return false;
59          }
60  
61          String name = property.getName();
62          boolean reverseName = false;
63  
64          if ( name != null && name.startsWith( "!" ) )
65          {
66              reverseName = true;
67              name = name.substring( 1 );
68          }
69  
70          if ( name == null || name.length() <= 0 )
71          {
72              problems.add( new ModelProblemCollectorRequest( Severity.ERROR, Version.BASE )
73                      .setMessage( "The property name is required to activate the profile " + profile.getId() )
74                      .setLocation( property.getLocation( "" ) ) );
75              return false;
76          }
77  
78          String sysValue = context.getUserProperties().get( name );
79          if ( sysValue == null )
80          {
81              sysValue = context.getSystemProperties().get( name );
82          }
83  
84          String propValue = property.getValue();
85          if ( StringUtils.isNotEmpty( propValue ) )
86          {
87              boolean reverseValue = false;
88              if ( propValue.startsWith( "!" ) )
89              {
90                  reverseValue = true;
91                  propValue = propValue.substring( 1 );
92              }
93  
94              // we have a value, so it has to match the system value...
95              boolean result = propValue.equals( sysValue );
96  
97              return reverseValue ? !result : result;
98          }
99          else
100         {
101             boolean result = StringUtils.isNotEmpty( sysValue );
102 
103             return reverseName ? !result : result;
104         }
105     }
106 
107     @Override
108     public boolean presentInConfig( Profile profile, ProfileActivationContext context, ModelProblemCollector problems )
109     {
110         Activation activation = profile.getActivation();
111 
112         if ( activation == null )
113         {
114             return false;
115         }
116 
117         ActivationProperty property = activation.getProperty();
118 
119         if ( property == null )
120         {
121             return false;
122         }
123         return true;
124     }
125 
126 }