src/test/java/org/codehaus/plexus/taskqueue/BuildProjectTaskViabilityEvaluator.java

package org.codehaus.plexus.taskqueue;

/*
 * The MIT License
 *
 * Copyright (c) 2004, The Codehaus
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is furnished to do
 * so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;

/**
 * @author <a href="mailto:trygvis@inamo.no">Trygve Laugst&oslash;l</a>
 * @version $Id$
 */
@Service( "taskViabilityEvaluator#build-project" )
public class BuildProjectTaskViabilityEvaluator
    implements TaskViabilityEvaluator
{
    public Collection evaluate( Collection tasks )
        throws TaskQueueException
    {
        BuildProjectTask okTask = null;

        List toBeRemoved = new ArrayList( tasks.size() );

        for ( Iterator it = tasks.iterator(); it.hasNext(); )
        {
            BuildProjectTask buildProjectTask = (BuildProjectTask) it.next();

            if ( okTask == null )
            {
                okTask = buildProjectTask;

                continue;
            }

            if ( buildProjectTask.getTimestamp() - okTask.getTimestamp() < 100 )
            {
                toBeRemoved.add( buildProjectTask );
            }
        }

        return toBeRemoved;
    }
}