1 package org.apache.maven.scm.command;
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.scm.CommandParameters;
23 import org.apache.maven.scm.ScmException;
24 import org.apache.maven.scm.ScmFileSet;
25 import org.apache.maven.scm.ScmResult;
26 import org.apache.maven.scm.provider.ScmProviderRepository;
27 import org.slf4j.Logger;
28 import org.slf4j.LoggerFactory;
29
30 /**
31 * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
32 * @author <a href="mailto:trygvis@inamo.no">Trygve Laugstøl</a>
33 *
34 */
35 public abstract class AbstractCommand
36 implements Command
37 {
38 protected Logger logger = LoggerFactory.getLogger( getClass() );
39
40 protected abstract ScmResult executeCommand( ScmProviderRepository repository, ScmFileSet fileSet,
41 CommandParameters parameters )
42 throws ScmException;
43
44 /** {@inheritDoc} */
45 public final ScmResult execute( ScmProviderRepository repository, ScmFileSet fileSet, CommandParameters parameters )
46 throws ScmException
47 {
48 if ( repository == null )
49 {
50 throw new NullPointerException( "repository cannot be null" );
51 }
52
53 if ( fileSet == null )
54 {
55 throw new NullPointerException( "fileSet cannot be null" );
56 }
57
58 try
59 {
60 return executeCommand( repository, fileSet, parameters );
61 }
62 catch ( Exception ex )
63 {
64 throw new ScmException( "Exception while executing SCM command.", ex );
65 }
66 }
67 }