/**
* 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 org.apache.hadoop.hbase.types;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.util.Order;
import org.apache.hadoop.hbase.util.OrderedBytes;
import org.apache.hadoop.hbase.util.PositionedByteRange;
/**
* A {@code byte} of 8-bits using a fixed-length encoding. Built on
* {@link OrderedBytes#encodeInt8(PositionedByteRange, byte, Order)}.
*/
@InterfaceAudience.Public
public class OrderedInt8 extends OrderedBytesBase<Byte> {
public static final OrderedInt8 ASCENDING = new OrderedInt8(Order.ASCENDING);
public static final OrderedInt8 DESCENDING = new OrderedInt8(Order.DESCENDING);
protected OrderedInt8(Order order) { super(order); }
@Override
public boolean isNullable() { return false; }
@Override
public int encodedLength(Byte val) { return 2; }
@Override
public Class<Byte> encodedClass() { return Byte.class; }
@Override
public Byte decode(PositionedByteRange src) {
return OrderedBytes.decodeInt8(src);
}
@Override
public int encode(PositionedByteRange dst, Byte val) {
if (null == val) throw new IllegalArgumentException("Null values not supported.");
return OrderedBytes.encodeInt8(dst, val, order);
}
/**
* Read a {@code byte} value from the buffer {@code src}.
*/
public byte decodeByte(PositionedByteRange src) {
return OrderedBytes.decodeInt8(src);
}
/**
* Write instance {@code val} into buffer {@code dst}.
*/
public int encodeByte(PositionedByteRange dst, byte val) {
return OrderedBytes.encodeInt8(dst, val, order);
}
}