HadoopTaskType.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.ignite.internal.processors.hadoop;

import org.jetbrains.annotations.Nullable;

/**
* Task type.
*/
public enum HadoopTaskType {
    /** Setup task. */
    SETUP,

    /** Map task. */
    MAP,

    /** Reduce task. */
    REDUCE,

    /** Combine task. */
    COMBINE,

    /** Commit task. */
    COMMIT,

    /** Abort task. */
    ABORT;

    /** Enumerated values. */
    private static final HadoopTaskType[] VALS = values();

    /**
     * Efficiently gets enumerated value from its ordinal.
     *
     * @param ord Ordinal value.
     * @return Enumerated value.
     */
    @Nullable public static HadoopTaskType fromOrdinal(byte ord) {
        return ord >= 0 && ord < VALS.length ? VALS[ord] : null;
    }
}