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Facilities for evaluating recommender algorithms.

There is a newer version: 3.0-T5

/*
 * 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 org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;
import org.grouplens.lenskit.eval.AbstractTask;
import org.grouplens.lenskit.eval.TaskExecutionException;

/**
 * A basic Eval task that executes a Groovy action. These tasks are added by {@link
 * org.grouplens.lenskit.eval.script.TargetDelegate#perform(Closure)}.
 *
 * @author GroupLens Research
 * @since 1.2
 */
public class GroovyActionTask extends AbstractTask {
    private Closure closure;

    public GroovyActionTask(Closure cl) {
        closure = cl;
    }

    @Override
    protected K perform() throws TaskExecutionException, InterruptedException {
        return closure.call();
    }
}