com.ebay.nest.io.sede.lazybinary.LazyBinaryBoolean.java Source code

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Here is the source code for com.ebay.nest.io.sede.lazybinary.LazyBinaryBoolean.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.ebay.nest.io.sede.lazybinary;

import org.apache.hadoop.io.BooleanWritable;

import com.ebay.nest.io.sede.lazy.ByteArrayRef;
import com.ebay.nest.io.sede.objectinspector.primitive.WritableBooleanObjectInspector;

/**
 * LazyBinaryObject for boolean which takes one byte
 * 
 * <p>
 * Part of the code is adapted from Apache Harmony Project.
 * 
 * As with the specification, this implementation relied on code laid out in <a
 * href="http://www.hackersdelight.org/">Henry S. Warren, Jr.'s Hacker's
 * Delight, (Addison Wesley, 2002)</a> as well as <a
 * href="http://aggregate.org/MAGIC/">The Aggregate's Magic Algorithms</a>.
 * </p>
 * 
 */
public class LazyBinaryBoolean extends LazyBinaryPrimitive<WritableBooleanObjectInspector, BooleanWritable> {

    public LazyBinaryBoolean(WritableBooleanObjectInspector oi) {
        super(oi);
        data = new BooleanWritable();
    }

    public LazyBinaryBoolean(LazyBinaryBoolean copy) {
        super(copy);
        data = new BooleanWritable(copy.data.get());
    }

    @Override
    public void init(ByteArrayRef bytes, int start, int length) {
        assert (1 == length);
        byte val = bytes.getData()[start];
        if (val == 0) {
            data.set(false);
        } else if (val == 1) {
            data.set(true);
        }
    }
}