001    package org.codehaus.mojo.properties;
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.Enumeration;
023    import java.util.Properties;
024    
025    import org.apache.maven.plugin.AbstractMojo;
026    import org.apache.maven.plugin.MojoExecutionException;
027    import org.apache.maven.plugin.MojoFailureException;
028    
029    /**
030     * Sets system properties.
031     * 
032     * @author <a href="mailto:markh@apache.org">Mark Hobson</a>
033     * @version $Id: SetSystemPropertiesMojo.java 9751 2009-05-20 14:53:00Z mark $
034     * @goal set-system-properties
035     * @phase initialize
036     */
037    public class SetSystemPropertiesMojo
038        extends AbstractMojo
039    {
040        // fields -----------------------------------------------------------------
041    
042        /**
043         * The system properties to set.
044         * 
045         * @parameter
046         * @required
047         */
048        private Properties properties;
049    
050        // Mojo methods -----------------------------------------------------------
051    
052        /**
053         * {@inheritDoc}
054         */
055        public void execute()
056            throws MojoExecutionException, MojoFailureException
057        {
058            if ( properties.isEmpty() )
059            {
060                getLog().debug( "No system properties found" );
061    
062                return;
063            }
064    
065            getLog().debug( "Setting system properties:" );
066    
067            for ( Enumeration propertyNames = properties.propertyNames(); propertyNames.hasMoreElements(); )
068            {
069                String propertyName = propertyNames.nextElement().toString();
070                String propertyValue = properties.getProperty( propertyName );
071    
072                getLog().debug( "- " + propertyName + " = " + propertyValue );
073    
074                System.setProperty( propertyName, propertyValue );
075            }
076    
077            int count = properties.size();
078    
079            getLog().info( "Set " + count + " system " + ( count > 1 ? "properties" : "property" ) );
080        }
081    }