org.pentaho.hadoop.shim.mapr410.SnappyShim.java Source code

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Here is the source code for org.pentaho.hadoop.shim.mapr410.SnappyShim.java

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/*******************************************************************************
 *
 * Pentaho Big Data
 *
 * Copyright (C) 2002-2015 by Pentaho : http://www.pentaho.com
 *
 *******************************************************************************
 *
 * 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.pentaho.hadoop.shim.mapr410;

import org.apache.hadoop.io.compress.SnappyCodec;
import org.pentaho.hadoop.shim.common.CommonSnappyShim;

public class SnappyShim extends CommonSnappyShim {
    /**
     * Tests whether hadoop-snappy (not to be confused with other java-based snappy implementations such as jsnappy or
     * snappy-java) plus the native snappy libraries are available.
     *
     * @return true if hadoop-snappy is available on the classpath
     */
    @Override
    public boolean isHadoopSnappyAvailable() {
        ClassLoader cl = Thread.currentThread().getContextClassLoader();
        Thread.currentThread().setContextClassLoader(getClass().getClassLoader());
        try {
            return SnappyCodec.isNativeCodeLoaded();
        } catch (Throwable t) {
            return false;
        } finally {
            Thread.currentThread().setContextClassLoader(cl);
        }
    }
}