com.ibm.jaql.fail.io.ErrorWritable.java Source code

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Here is the source code for com.ibm.jaql.fail.io.ErrorWritable.java

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/*
 * Copyright (C) IBM Corp. 2009.
 * 
 * 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 com.ibm.jaql.fail.io;

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

import org.apache.hadoop.io.Text;

public class ErrorWritable extends Text {

    public enum Error {
        NONE, READ, WRITE
    };

    private Error error = Error.NONE;

    public ErrorWritable() {
    }

    public ErrorWritable(Error e) {
        error = e;
    }

    @Override
    public void readFields(DataInput in) throws IOException {

        String e = in.readUTF();
        error = Error.valueOf(e);
        super.readFields(in);

        if (error.equals(Error.READ)) {
            throw new IOException("failed in read");
        }
    }

    @Override
    public void write(DataOutput out) throws IOException {
        out.writeUTF(error.toString());
        super.write(out);

        if (error.equals(Error.WRITE)) {
            throw new IOException("failed in write");
        }
    }

}