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1   package org.apache.maven.model.building;
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  /**
23   * Assists in firing events from a generic method by abstracting from the actual callback method to be called on the
24   * listener.
25   *
26   * @author Benjamin Bentmann
27   */
28  interface ModelBuildingEventCatapult
29  {
30  
31      /**
32       * Notifies the specified listener of the given event.
33       *
34       * @param listener The listener to notify, must not be {@code null}.
35       * @param event The event to fire, must not be {@code null}.
36       */
37      void fire( ModelBuildingListener listener, ModelBuildingEvent event );
38  
39      ModelBuildingEventCatapult BUILD_EXTENSIONS_ASSEMBLED = new ModelBuildingEventCatapult()
40      {
41          @Override
42          public void fire( ModelBuildingListener listener, ModelBuildingEvent event )
43          {
44              listener.buildExtensionsAssembled( event );
45          }
46      };
47  
48  }