org.apache.tajo.storage.rcfile.SchemaAwareCompressionInputStream.java Source code

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Here is the source code for org.apache.tajo.storage.rcfile.SchemaAwareCompressionInputStream.java

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/**
 * 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.tajo.storage.rcfile;

import org.apache.hadoop.io.compress.CompressionInputStream;

import java.io.InputStream;

/**
 *
 * SchemaAwareCompressionInputStream adds the ability to inform the compression
 * stream what column is being read.
 *
 */
public abstract class SchemaAwareCompressionInputStream extends CompressionInputStream {

    protected SchemaAwareCompressionInputStream(InputStream in) throws java.io.IOException {
        super(in);
    }

    /**
     * The column being read
     *
     * @param columnIndex the index of the column. Use -1 for non-column data
     */
    public abstract void setColumnIndex(int columnIndex);
}