Java tutorial
/** * 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 edu.uci.ics.hivesterix.serde.lazy; import org.apache.hadoop.io.ByteWritable; import edu.uci.ics.hivesterix.serde.lazy.objectinspector.primitive.LazyByteObjectInspector; /** * LazyObject for storing a value of 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 LazyByte extends LazyPrimitive<LazyByteObjectInspector, ByteWritable> { public LazyByte(LazyByteObjectInspector oi) { super(oi); data = new ByteWritable(); } public LazyByte(LazyByte copy) { super(copy); data = new ByteWritable(copy.data.get()); } @Override public void init(byte[] bytes, int start, int length) { if (length == 0) { isNull = true; return; } else isNull = false; assert (1 == length); data.set(bytes[start]); } }