| /* |
| * Copyright 2009-2010 by The Regents of the University of California |
| * 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 from |
| * |
| * 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.hyracks.data.std.primitive; |
| |
| import edu.uci.ics.hyracks.api.dataflow.value.ITypeTraits; |
| import edu.uci.ics.hyracks.data.std.api.AbstractPointable; |
| import edu.uci.ics.hyracks.data.std.api.IComparable; |
| import edu.uci.ics.hyracks.data.std.api.IHashable; |
| import edu.uci.ics.hyracks.data.std.api.INumeric; |
| import edu.uci.ics.hyracks.data.std.api.IPointable; |
| import edu.uci.ics.hyracks.data.std.api.IPointableFactory; |
| |
| public final class BytePointable extends AbstractPointable implements IHashable, IComparable, INumeric { |
| public static final ITypeTraits TYPE_TRAITS = new ITypeTraits() { |
| private static final long serialVersionUID = 1L; |
| |
| @Override |
| public boolean isFixedLength() { |
| return true; |
| } |
| |
| @Override |
| public int getFixedLength() { |
| return 1; |
| } |
| }; |
| |
| public static final IPointableFactory FACTORY = new IPointableFactory() { |
| private static final long serialVersionUID = 1L; |
| |
| @Override |
| public IPointable createPointable() { |
| return new BytePointable(); |
| } |
| |
| @Override |
| public ITypeTraits getTypeTraits() { |
| return TYPE_TRAITS; |
| } |
| }; |
| |
| public static byte getByte(byte[] bytes, int start) { |
| return bytes[start]; |
| } |
| |
| public static void setByte(byte[] bytes, int start, byte value) { |
| bytes[start] = value; |
| } |
| |
| public byte getByte() { |
| return getByte(bytes, start); |
| } |
| |
| public void setByte(byte value) { |
| setByte(bytes, start, value); |
| } |
| |
| public byte preIncrement() { |
| byte v = getByte(); |
| ++v; |
| setByte(v); |
| return v; |
| } |
| |
| public byte postIncrement() { |
| byte v = getByte(); |
| byte ov = v++; |
| setByte(v); |
| return ov; |
| } |
| |
| @Override |
| public int compareTo(IPointable pointer) { |
| return compareTo(pointer.getByteArray(), pointer.getStartOffset(), pointer.getLength()); |
| } |
| |
| @Override |
| public int compareTo(byte[] bytes, int start, int length) { |
| byte b = getByte(); |
| byte ob = getByte(bytes, start); |
| return b < ob ? -1 : (b > ob ? 1 : 0); |
| } |
| |
| @Override |
| public int hash() { |
| return getByte(); |
| } |
| |
| @Override |
| public byte byteValue() { |
| return getByte(); |
| } |
| |
| @Override |
| public short shortValue() { |
| return getByte(); |
| } |
| |
| @Override |
| public int intValue() { |
| return getByte(); |
| } |
| |
| @Override |
| public long longValue() { |
| return getByte(); |
| } |
| |
| @Override |
| public float floatValue() { |
| return getByte(); |
| } |
| |
| @Override |
| public double doubleValue() { |
| return getByte(); |
| } |
| } |