org.springframework.data.keyvalue.riak.groovy.RiakMapReduceOperation.java Source code

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Here is the source code for org.springframework.data.keyvalue.riak.groovy.RiakMapReduceOperation.java

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/*
 * Copyright (c) 2010 by J. Brisbin <jon@jbrisbin.com>
 * Portions (c) 2010 by NPC International, Inc. or the
 * original author(s).
 *
 * 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.springframework.data.keyvalue.riak.groovy;

import groovy.lang.Closure;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.data.keyvalue.riak.core.AsyncKeyValueStoreOperation;
import org.springframework.data.keyvalue.riak.core.AsyncRiakTemplate;
import org.springframework.data.keyvalue.riak.core.KeyValueStoreMetaData;
import org.springframework.data.keyvalue.riak.mapreduce.AsyncRiakMapReduceJob;

import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;

/**
 * @author J. Brisbin <jon@jbrisbin.com>
 */
public class RiakMapReduceOperation implements Callable {

    protected final Log log = LogFactory.getLog(getClass());

    protected AsyncRiakTemplate riak;
    protected AsyncRiakMapReduceJob job;
    protected Long timeout = -1L;
    protected Closure completed = null;
    protected Closure failed = null;

    public RiakMapReduceOperation(AsyncRiakTemplate riak, AsyncRiakMapReduceJob job) {
        this.riak = riak;
        this.job = job;
    }

    public AsyncRiakMapReduceJob getJob() {
        return job;
    }

    public void setJob(AsyncRiakMapReduceJob job) {
        this.job = job;
    }

    public Long getTimeout() {
        return timeout;
    }

    public void setTimeout(Long timeout) {
        this.timeout = timeout;
    }

    public Closure getCompleted() {
        return completed;
    }

    public void setCompleted(Closure completed) {
        this.completed = completed;
    }

    public Closure getFailed() {
        return failed;
    }

    public void setFailed(Closure failed) {
        this.failed = failed;
    }

    public Object call() throws Exception {
        Future<?> f = riak.execute(job, new AsyncKeyValueStoreOperation<List<?>, Object>() {
            public Object completed(KeyValueStoreMetaData meta, List<?> result) {
                if (null != completed) {
                    if (completed.getParameterTypes().length == 2) {
                        return completed.call(new Object[] { result, meta });
                    } else {
                        return completed.call(result);
                    }
                } else {
                    return new Object[] { result, meta };
                }
            }

            public Object failed(Throwable error) {
                if (null != failed) {
                    return failed.call(error);
                } else {
                    throw new RuntimeException(error);
                }
            }
        });

        if (timeout == 0) {
            return f;
        } else if (timeout < 0) {
            return f.get();
        } else {
            return f.get(timeout, TimeUnit.MILLISECONDS);
        }
    }
}