001    package org.apache.maven.plugin;
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 java.util.Iterator;
023    import java.util.List;
024    
025    import org.apache.maven.plugin.descriptor.MojoDescriptor;
026    import org.apache.maven.plugin.descriptor.PluginDescriptor;
027    
028    public class MojoNotFoundException
029        extends Exception
030    {
031        private String goal;
032    
033        private PluginDescriptor pluginDescriptor;
034            
035        public MojoNotFoundException( String goal, PluginDescriptor pluginDescriptor )
036        {
037            super( toMessage( goal, pluginDescriptor ) );
038    
039            this.goal = goal;
040            this.pluginDescriptor = pluginDescriptor;
041        }
042    
043        public String getGoal()
044        {
045            return goal;
046        }
047    
048        public PluginDescriptor getPluginDescriptor()
049        {
050            return pluginDescriptor;
051        }        
052    
053        private static String toMessage( String goal, PluginDescriptor pluginDescriptor )
054        {
055            StringBuilder buffer = new StringBuilder( 256 );
056    
057            buffer.append( "Could not find goal '" ).append( goal ).append( "'" );
058    
059            if ( pluginDescriptor != null )
060            {
061                buffer.append( " in plugin " ).append( pluginDescriptor.getId() );
062    
063                buffer.append( " among available goals " );
064                List<MojoDescriptor> mojos = pluginDescriptor.getMojos();
065                if ( mojos != null )
066                {
067                    for ( Iterator<MojoDescriptor> it = mojos.iterator(); it.hasNext(); )
068                    {
069                        MojoDescriptor mojo = it.next();
070                        if ( mojo != null )
071                        {
072                            buffer.append( mojo.getGoal() );
073                        }
074                        if ( it.hasNext() )
075                        {
076                            buffer.append( ", " );
077                        }
078                    }
079                }
080            }
081    
082            return buffer.toString();
083        }
084    
085    }