org.mrgeo.tile.TileIdZoomWritable.java Source code

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Here is the source code for org.mrgeo.tile.TileIdZoomWritable.java

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/*
 * Copyright 2009-2016 DigitalGlobe, Inc.
 *
 * 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.mrgeo.tile;

import org.apache.commons.lang3.builder.HashCodeBuilder;
import org.apache.hadoop.io.LongWritable;
import org.mrgeo.data.tile.TileIdWritable;

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

public class TileIdZoomWritable extends TileIdWritable {

    private int zoom = -1;

    public TileIdZoomWritable() {
    }

    public TileIdZoomWritable(final long value) {
        super(value);
    }

    public TileIdZoomWritable(final long value, final int zoom) {
        super(value);
        this.zoom = zoom;
    }

    public TileIdZoomWritable(final TileIdWritable writable) {
        super(writable);
    }

    public TileIdZoomWritable(final TileIdZoomWritable writable) {
        super(writable);
        this.zoom = writable.zoom;
    }

    public int compareTo(final LongWritable o) {
        if (o instanceof TileIdZoomWritable) {
            return compareTo((TileIdZoomWritable) o);
        }
        return super.compareTo(o);
    }

    /** Compares two TileIdZoomWritable. */
    public int compareTo(final TileIdZoomWritable o) {
        if (this.zoom < o.zoom) {
            return -1;
        } else if (this.zoom > o.zoom) {
            return 1;
        }
        final long thisValue = this.get();
        final long thatValue = o.get();

        return (thisValue < thatValue ? -1 : (thisValue == thatValue ? 0 : 1));
    }

    @Override
    public boolean equals(final Object o) {
        if (!(o instanceof TileIdZoomWritable)) {
            return false;
        }
        final TileIdZoomWritable other = (TileIdZoomWritable) o;
        return this.get() == other.get() && this.zoom == other.zoom;
    }

    public int getZoom() {
        return zoom;
    }

    @Override
    public int hashCode() {
        return new HashCodeBuilder(17, 31). // two randomly chosen prime numbers
        // if deriving: appendSuper(super.hashCode()).
                appendSuper(super.hashCode()).append(zoom).toHashCode();
    }

    @Override
    public void readFields(final DataInput in) throws IOException {
        super.readFields(in);
        zoom = in.readInt();
    }

    @Override
    public void write(final DataOutput out) throws IOException {
        super.write(out);
        out.writeInt(zoom);
    }

}