org.apache.tez.common.OutputSpec.java Source code

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Here is the source code for org.apache.tez.common.OutputSpec.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.tez.common;

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

import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.Writable;

public class OutputSpec implements Writable {

    private String vertexName;
    private int outDegree;
    private String outputClassName;

    public OutputSpec() {
    }

    public OutputSpec(String vertexName, int outDegree, String outputClassName) {
        this.vertexName = vertexName;
        this.outDegree = outDegree;
        this.outputClassName = outputClassName;
    }

    /**
     * @return the name of the output vertex.
     */
    public String getVertexName() {
        return this.vertexName;
    }

    /**
     * @return the number of outputs to be generated by this task.
     */
    public int getNumOutputs() {
        return this.outDegree;
    }

    /**
     * @return Output class name
     */
    public String getOutputClassName() {
        return this.outputClassName;
    }

    @Override
    public void write(DataOutput out) throws IOException {
        Text.writeString(out, vertexName);
        out.writeInt(outDegree);
        Text.writeString(out, outputClassName);
    }

    @Override
    public void readFields(DataInput in) throws IOException {
        vertexName = Text.readString(in);
        this.outDegree = in.readInt();
        outputClassName = Text.readString(in);
    }

    @Override
    public String toString() {
        return "VertexName: " + vertexName + ", OutDegree: " + outDegree + ", OutputClassName=" + outputClassName;
    }
}