001    /*
002     * Copyright 2005 Stephen J. McConnell
003     *
004     * Licensed  under the  Apache License,  Version 2.0  (the "License");
005     * you may not use  this file  except in  compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     *   http://www.apache.org/licenses/LICENSE-2.0
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed  under the  License is distributed on an "AS IS" BASIS,
012     * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY KIND, either  express  or
013     * implied.
014     *
015     * See the License for the specific language governing permissions and
016     * limitations under the License.
017     */
018    
019    package net.dpml.tools.tasks;
020    
021    import org.apache.tools.ant.BuildException;
022    import org.apache.tools.ant.taskdefs.Property;
023    
024    /**
025     * Build a set of projects taking into account dependencies within the
026     * supplied fileset.
027     *
028     * @author <a href="http://www.dpml.net">Digital Product Meta Library</a>
029     * @version 1.1.1
030     */
031    public class PropertyTask extends FeatureTask
032    {
033        private String m_property;
034    
035       /**
036        * Set the property name. The property task will assign a value to the 
037        * property declared by the supplied name.
038        * @param property the property name
039        */
040        public void setName( final String property )
041        {
042            m_property = property;
043        }
044    
045       /**
046        * Task execution.
047        * @exception BuildException if an error occurs
048        */
049        public void execute() throws BuildException
050        {
051            if( null == m_property )
052            {
053                final String error =
054                  "Missing name attribute.";
055                throw new BuildException( error );
056            }
057    
058            final String value = super.resolve();
059            if( null != value )
060            {
061                final Property property = (Property) getProject().createTask( "property" );
062                property.init();
063                property.setName( m_property );
064                property.setValue( value );
065                property.setTaskName( getTaskName() );
066                property.execute();
067            }
068            else
069            {
070                final String error =
071                  "Unrecognized or unsupported feature ["
072                  + getFeature()
073                  + "].";
074                throw new BuildException( error );
075            }
076        }
077    }