/*
* LensKit, an open source recommender systems toolkit.
* Copyright 2010-2014 LensKit Contributors. See CONTRIBUTORS.md.
* Work on LensKit has been funded by the National Science Foundation under
* grants IIS 05-34939, 08-08692, 08-12148, and 10-17697.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 51
* Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.grouplens.lenskit.eval.script;
import groovy.lang.Closure;
import groovy.lang.DelegatesTo;
import groovy.util.AntBuilder;
import org.apache.tools.ant.Target;
import org.apache.tools.ant.Task;
import org.grouplens.lenskit.eval.EvalAntTask;
/**
* Delegate to build a target.
*
* @author <a href="http://www.grouplens.org">GroupLens Research</a>
* @since 1.2
*/
public class TargetDelegate {
private final AntBuilder ant;
private Target target;
public TargetDelegate(Target tgt) {
target = tgt;
ant = new LenskitAntBuilder(tgt.getProject(), tgt);
}
public void requires(Object... targets) {
for (Object tgt : targets) {
if (tgt instanceof Target) {
target.addDependency(((Target) tgt).getName());
} else {
target.addDependency(tgt.toString());
}
}
}
public <K> void perform(Closure<K> cl) {
GroovyActionTask<K> evalTask = new GroovyActionTask<K>(cl);
EvalAntTask task = new EvalAntTask(evalTask);
task.setProject(target.getProject());
target.addTask(task);
}
public final AntBuilder getAnt() {
return ant;
}
/**
* Invoke an Ant block.
*/
public Task ant(Closure<?> block) {
return (Task) getAnt().invokeMethod("sequential", block);
}
}