/**
* 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.classification.InterfaceStability;
import org.apache.hadoop.hbase.util.Order;
import org.apache.hadoop.hbase.util.OrderedBytes;
import org.apache.hadoop.hbase.util.PositionedByteRange;
/**
* A {@code float} of 32-bits using a fixed-length encoding. Based on
* {@link OrderedBytes#encodeFloat32(PositionedByteRange, float, Order)}.
*/
@InterfaceAudience.Public
@InterfaceStability.Evolving
public class OrderedFloat32 extends OrderedBytesBase<Float> {
public static final OrderedFloat32 ASCENDING = new OrderedFloat32(Order.ASCENDING);
public static final OrderedFloat32 DESCENDING = new OrderedFloat32(Order.DESCENDING);
protected OrderedFloat32(Order order) { super(order); }
@Override
public boolean isNullable() { return false; }
@Override
public int encodedLength(Float val) { return 5; }
@Override
public Class<Float> encodedClass() { return Float.class; }
@Override
public Float decode(PositionedByteRange src) {
return OrderedBytes.decodeFloat32(src);
}
@Override
public int encode(PositionedByteRange dst, Float val) {
if (null == val) throw new IllegalArgumentException("Null values not supported.");
return OrderedBytes.encodeFloat32(dst, val, order);
}
/**
* Read a {@code float} value from the buffer {@code dst}.
*/
public float decodeFloat(PositionedByteRange dst) {
return OrderedBytes.decodeFloat32(dst);
}
/**
* Write instance {@code val} into buffer {@code buff}.
*/
public int encodeFloat(PositionedByteRange dst, float val) {
return OrderedBytes.encodeFloat32(dst, val, order);
}
}