org.apache.nutch.scoring.ScoreDatum.java Source code

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Here is the source code for org.apache.nutch.scoring.ScoreDatum.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.nutch.scoring;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;

import org.apache.nutch.util.Bytes;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.Writable;
import org.apache.hadoop.io.WritableUtils;

public class ScoreDatum implements Writable {

    private float score;
    private String url;
    private String anchor;
    private int distance;
    private Map<String, byte[]> metaData = new HashMap<String, byte[]>();

    public ScoreDatum() {
    }

    public ScoreDatum(float score, String url, String anchor, int depth) {
        this.score = score;
        this.url = url;
        this.anchor = anchor;
        this.distance = depth;
    }

    @Override
    public void readFields(DataInput in) throws IOException {
        score = in.readFloat();
        url = Text.readString(in);
        anchor = Text.readString(in);
        distance = WritableUtils.readVInt(in);
        metaData.clear();

        int size = WritableUtils.readVInt(in);
        for (int i = 0; i < size; i++) {
            String key = Text.readString(in);
            byte[] value = Bytes.readByteArray(in);
            metaData.put(key, value);
        }
    }

    @Override
    public void write(DataOutput out) throws IOException {
        out.writeFloat(score);
        Text.writeString(out, url);
        Text.writeString(out, anchor);
        WritableUtils.writeVInt(out, distance);

        WritableUtils.writeVInt(out, metaData.size());
        for (Entry<String, byte[]> e : metaData.entrySet()) {
            Text.writeString(out, e.getKey());
            Bytes.writeByteArray(out, e.getValue());
        }
    }

    public byte[] getMeta(String key) {
        return metaData.get(key);
    }

    public void setMeta(String key, byte[] value) {
        metaData.put(key, value);
    }

    public byte[] deleteMeta(String key) {
        return metaData.remove(key);
    }

    public float getScore() {
        return score;
    }

    public void setScore(float score) {
        this.score = score;
    }

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    public String getAnchor() {
        return anchor;
    }

    public int getDistance() {
        return distance;
    }

    @Override
    public String toString() {
        return "ScoreDatum [score=" + score + ", url=" + url + ", anchor=" + anchor + ", distance=" + distance
                + ", metaData=" + metaData + "]";
    }

}