com.jfolson.hive.serde.RTypedBytesRecordOutput.java Source code

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Here is the source code for com.jfolson.hive.serde.RTypedBytesRecordOutput.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 com.jfolson.hive.serde;

import java.io.DataOutput;
import java.io.IOException;
import java.util.ArrayList;
import java.util.TreeMap;

import org.apache.hadoop.record.Buffer;
import org.apache.hadoop.record.Record;
import org.apache.hadoop.record.RecordOutput;

/**
 * Deserialized for records that reads typed bytes.
 */
public class RTypedBytesRecordOutput implements RecordOutput {

    private RTypedBytesOutput out;

    private RTypedBytesRecordOutput() {
    }

    private void setTypedBytesOutput(RTypedBytesOutput out) {
        this.out = out;
    }

    private static ThreadLocal tbOut = new ThreadLocal() {
        @Override
        protected synchronized Object initialValue() {
            return new RTypedBytesRecordOutput();
        }
    };

    /**
     * Get a thread-local typed bytes record input for the supplied
     * {@link TypedBytesOutput}.
     * 
     * @param out
     *          typed bytes output object
     * @return typed bytes record output corresponding to the supplied
     *         {@link TypedBytesOutput}.
     */
    public static RTypedBytesRecordOutput get(RTypedBytesOutput out) {
        RTypedBytesRecordOutput bout = (RTypedBytesRecordOutput) tbOut.get();
        bout.setTypedBytesOutput(out);
        return bout;
    }

    /**
     * Get a thread-local typed bytes record output for the supplied
     * {@link DataOutput}.
     * 
     * @param out
     *          data output object
     * @return typed bytes record output corresponding to the supplied
     *         {@link DataOutput}.
     */
    public static RTypedBytesRecordOutput get(DataOutput out) {
        return get(RTypedBytesOutput.get(out));
    }

    /** Creates a new instance of TypedBytesRecordOutput. */
    public RTypedBytesRecordOutput(RTypedBytesOutput out) {
        this.out = out;
    }

    /** Creates a new instance of TypedBytesRecordOutput. */
    public RTypedBytesRecordOutput(DataOutput out) {
        this(new RTypedBytesOutput(out));
    }

    public void writeBool(boolean b, String tag) throws IOException {
        out.writeBool(b);
    }

    public void writeBuffer(Buffer buf, String tag) throws IOException {
        out.writeBytes(buf.get());
    }

    public void writeByte(byte b, String tag) throws IOException {
        out.writeByte(b);
    }

    public void writeDouble(double d, String tag) throws IOException {
        out.writeDouble(d);
    }

    public void writeFloat(float f, String tag) throws IOException {
        out.writeFloat(f);
    }

    public void writeInt(int i, String tag) throws IOException {
        out.writeInt(i);
    }

    public void writeLong(long l, String tag) throws IOException {
        out.writeLong(l);
    }

    public void writeString(String s, String tag) throws IOException {
        out.writeString(s);
    }

    public void startRecord(Record r, String tag) throws IOException {
        out.writeListHeader();
    }

    public void startVector(ArrayList v, String tag) throws IOException {
        out.writeVectorHeader(v.size());
    }

    public void startMap(TreeMap m, String tag) throws IOException {
        out.writeMapHeader(m.size());
    }

    public void endRecord(Record r, String tag) throws IOException {
        out.writeListFooter();
    }

    public void endVector(ArrayList v, String tag) throws IOException {
    }

    public void endMap(TreeMap m, String tag) throws IOException {
    }

}