org.apache.hadoop.hive.jdbc.storagehandler.JdbcDBInputSplit.java Source code

Introduction

Here is the source code for org.apache.hadoop.hive.jdbc.storagehandler.JdbcDBInputSplit.java

Source

/*
 * Copyright 2016 Axibase Corporation or its affiliates. All Rights Reserved.
 * Copyright 2013-2015 Qubole
 * Copyright 2013-2015 Makoto YUI
 *
 * 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.apache.hadoop.hive.jdbc.storagehandler;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;

public class JdbcDBInputSplit extends org.apache.hadoop.mapreduce.lib.db.DBInputFormat.DBInputSplit {
    private static final Log LOG = LogFactory.getLog(JdbcDBInputSplit.class);
    private long start = 0;
    private long length = 0;
    private long end = 0;

    public JdbcDBInputSplit() {

    }

    public JdbcDBInputSplit(long index) {
        super(index, index + 1);
        this.start = index;
        this.end = index + 1;
    }

    @Override
    public long getLength() throws IOException {
        LOG.info("end index and length is: " + this.end + " " + (this.end - this.start));
        return this.end - this.start;
    }

    @Override
    public long getStart() {
        LOG.info("Start index is: " + this.start);
        return this.start;
    }

    public void setStart(long chunkSize) {

        this.start *= chunkSize;
    }

    public void setEnd(long chunkSize) {
        this.end *= chunkSize;

    }

    public void readFields(DataInput input) throws IOException {
        this.start = input.readLong();
        this.end = input.readLong();

    }

    /** {@inheritDoc} */

    public void write(DataOutput output) throws IOException {
        output.writeLong(this.start);
        output.writeLong(this.end);
    }
}