001    package org.apache.maven.scm.command.list;
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.scm.CommandParameter;
023    import org.apache.maven.scm.CommandParameters;
024    import org.apache.maven.scm.ScmException;
025    import org.apache.maven.scm.ScmFileSet;
026    import org.apache.maven.scm.ScmResult;
027    import org.apache.maven.scm.ScmVersion;
028    import org.apache.maven.scm.command.AbstractCommand;
029    import org.apache.maven.scm.provider.ScmProviderRepository;
030    
031    /**
032     * @author <a href="mailto:carlos@apache.org">Carlos Sanchez</a>
033     * @version $Id: AbstractListCommand.java 685539 2008-08-13 13:27:27Z vsiveton $
034     */
035    public abstract class AbstractListCommand
036        extends AbstractCommand
037    {
038        /**
039         * List contents of the remote repository
040         *
041         * @param repository what to list
042         * @param fileSet    the files to list
043         * @param recursive  whether list should return subfolder listing
044         * @return the list of files
045         * @throws ScmException
046         */
047        protected abstract ListScmResult executeListCommand( ScmProviderRepository repository, ScmFileSet fileSet,
048                                                             boolean recursive, ScmVersion scmVersion )
049            throws ScmException;
050    
051        /** {@inheritDoc} */
052        public ScmResult executeCommand( ScmProviderRepository repository, ScmFileSet fileSet,
053                                         CommandParameters parameters )
054            throws ScmException
055        {
056            if ( fileSet.getFileList().isEmpty() )
057            {
058                throw new IllegalArgumentException( "fileSet can not be empty" );
059            }
060    
061            boolean recursive = parameters.getBoolean( CommandParameter.RECURSIVE );
062    
063            ScmVersion scmVersion = parameters.getScmVersion( CommandParameter.SCM_VERSION, null );
064    
065            return executeListCommand( repository, fileSet, recursive, scmVersion );
066        }
067    }