org.apache.nutch.crawl.Inlink.java Source code

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Here is the source code for org.apache.nutch.crawl.Inlink.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.crawl;

import java.io.*;
import org.apache.hadoop.io.*;

/* An incoming link to a page. */
public class Inlink implements Writable {

    private String fromUrl;
    private String anchor;

    public Inlink() {
    }

    public Inlink(String fromUrl, String anchor) {
        this.fromUrl = fromUrl;
        this.anchor = anchor;
    }

    public void readFields(DataInput in) throws IOException {
        fromUrl = Text.readString(in);
        anchor = Text.readString(in);
    }

    /** Skips over one Inlink in the input. */
    public static void skip(DataInput in) throws IOException {
        Text.skip(in); // skip fromUrl
        Text.skip(in); // skip anchor
    }

    public void write(DataOutput out) throws IOException {
        Text.writeString(out, fromUrl);
        Text.writeString(out, anchor);
    }

    public static Inlink read(DataInput in) throws IOException {
        Inlink inlink = new Inlink();
        inlink.readFields(in);
        return inlink;
    }

    public String getFromUrl() {
        return fromUrl;
    }

    public String getAnchor() {
        return anchor;
    }

    public boolean equals(Object o) {
        if (!(o instanceof Inlink))
            return false;
        Inlink other = (Inlink) o;
        return this.fromUrl.equals(other.fromUrl) && this.anchor.equals(other.anchor);
    }

    public int hashCode() {
        return fromUrl.hashCode() ^ anchor.hashCode();
    }

    public String toString() {
        return "fromUrl: " + fromUrl + " anchor: " + anchor;
    }

}