001    package org.apache.maven;
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    
022    import org.apache.maven.execution.MavenSession;
023    
024    /**
025     * Allows core extensions to participate in build lifecycle.
026     *
027     * All callback methods (will) follow beforeXXX/afterXXX naming pattern to
028     * indicate at what lifecycle point it is being called.
029     *
030     */
031    public abstract class AbstractMavenLifecycleParticipant
032    {
033    
034        /**
035         * Invoked after all MavenProject instances have been created.
036         *
037         * This callback is intended to allow extensions to manipulate MavenProjects
038         * before they are sorted and actual build execution starts.
039         */
040        public void afterProjectsRead( MavenSession session )
041            throws MavenExecutionException
042        {
043            // do nothing
044        }
045    
046        /**
047         * Invoked after MavenSession instance has been created.
048         *
049         * This callback is intended to allow extensions to inject execution properties,
050         * activate profiles and perform similar tasks that affect MavenProject
051         * instance construction.
052         */
053        // TODO: This is too early for build extensions, so maybe just remove it?
054        public void afterSessionStart( MavenSession session )
055            throws MavenExecutionException
056        {
057            // do nothing
058        }
059    
060    }