de.kp.core.spade.hadoop.BitSetWritable.java Source code

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Here is the source code for de.kp.core.spade.hadoop.BitSetWritable.java

Source

package de.kp.core.spade.hadoop;
/* Copyright (c) 2014 Dr. Krusche & Partner PartG
* 
* This file is part of the Core-SPADE project
* (https://github.com/skrusche63/core-spade).
* 
* Core-SPADE is free software: you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
* 
* Core-SPADE is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU General Public License for more details.
* You should have received a copy of the GNU General Public License along with
* Core-SPADE. 
* 
* If not, see <http://www.gnu.org/licenses/>.
*/

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

import org.apache.hadoop.io.Writable;

public class BitSetWritable implements Writable {

    private BitSet bitset;

    public BitSetWritable() {
    }

    public BitSetWritable(BitSet set) {
        this.bitset = set;
    }

    public BitSet get() {
        return this.bitset;
    }

    /* (non-Javadoc)
     * @see org.apache.hadoop.io.Writable#readFields(java.io.DataInput)
     */
    public void readFields(DataInput in) throws IOException {

        long[] longs = new long[in.readInt()];
        for (int i = 0; i < longs.length; i++) {
            longs[i] = in.readLong();
        }

        bitset = BitSet.valueOf(longs);
    }

    /* (non-Javadoc)
     * @see org.apache.hadoop.io.Writable#write(java.io.DataOutput)
     */
    public void write(DataOutput out) throws IOException {

        long[] longs = bitset.toLongArray();
        out.writeInt(longs.length);

        for (int i = 0; i < longs.length; i++) {
            out.writeLong(longs[i]);
        }

    }

}