src/org/apache/pig/backend/hadoop/hbase/TableSplitComparable.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.pig.backend.hadoop.hbase;

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

import org.apache.hadoop.io.WritableComparable;
import org.apache.hadoop.hbase.mapreduce.TableSplit;

public class TableSplitComparable implements WritableComparable<TableSplit> {

    TableSplit tsplit;

    // need a default constructor to be able to de-serialize using just the Writable interface
    public TableSplitComparable() {
        tsplit = new TableSplit();
    }

    public TableSplitComparable(TableSplit tsplit) {
        this.tsplit = tsplit;
    }

    @Override
    public void readFields(DataInput in) throws IOException {
        tsplit.readFields(in);
    }

    @Override
    public void write(DataOutput out) throws IOException {
        tsplit.write(out);
    }

    @Override
    public int compareTo(TableSplit split) {
        return tsplit.compareTo((TableSplit) split);
    }
 
    @Override
    public String toString() {
        return "TableSplitComparable : " + tsplit.toString();
    }
 
    /* (non-Javadoc)
     * @see java.lang.Object#hashCode()
     */
    @Override
    public int hashCode() {
        return ((tsplit == null) ? 0 : tsplit.hashCode());
    }
 
    /* (non-Javadoc)
     * @see java.lang.Object#equals(java.lang.Object)
     */
    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        TableSplitComparable other = (TableSplitComparable) obj;
        if (tsplit == null) {
            if (other.tsplit != null)
                return false;
        } else if (!tsplit.equals(other.tsplit)) {
            return false;
        }
        return true;
    }

}