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/*
 *
 *  * Copyright 2015 Skymind,Inc.
 *  *
 *  *    Licensed under the Apache License, Version 2.0 (the "License");
 *  *    you may not use this file except in compliance with the License.
 *  *    You may obtain a copy of the License at
 *  *
 *  *        http://www.apache.org/licenses/LICENSE-2.0
 *  *
 *  *    Unless required by applicable law or agreed to in writing, software
 *  *    distributed under the License is distributed on an "AS IS" BASIS,
 *  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  *    See the License for the specific language governing permissions and
 *  *    limitations under the License.
 *
 */

package org.deeplearning4j.scaleout.job.collection;

import org.deeplearning4j.scaleout.job.Job;
import org.deeplearning4j.scaleout.job.JobIterator;

import java.util.Collection;
import java.util.Iterator;

/**
 * Iterate over a collection
 * @author Adam Gibson
 */
public class CollectionJobIterator implements JobIterator {
    protected Iterator jobs;
    protected Collection jobCollection;

    /**
     *
     * @param jobs the jobs to iterate over
     *             (note that this WILL be cached for the reset operation)
     */
    public CollectionJobIterator(Collection jobs) {
        this.jobs = jobs.iterator();
        this.jobCollection = jobs;
    }


    @Override
    public Job next(String workerId) {
        Job next = jobs.next();
        next.setWorkerId(workerId);
        return next;
    }

    @Override
    public Job next() {
        return jobs.next();
    }

    @Override
    public boolean hasNext() {
        return jobs.hasNext();
    }

    @Override
    public void reset() {
       jobs = jobCollection.iterator();
    }
}