/**
* 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.Bytes;
import org.apache.hadoop.hbase.util.Order;
import org.apache.hadoop.hbase.util.PositionedByteRange;
/**
* An {@code DataType} for interacting with values encoded using
* {@link Bytes#putLong(byte[], int, long)}. Intended to make it easier to
* transition away from direct use of {@link Bytes}.
* @see Bytes#putLong(byte[], int, long)
* @see Bytes#toLong(byte[])
*/
@InterfaceAudience.Public
public class RawLong implements DataType<Long> {
@Override
public boolean isOrderPreserving() { return false; }
@Override
public Order getOrder() { return null; }
@Override
public boolean isNullable() { return false; }
@Override
public boolean isSkippable() { return true; }
@Override
public int encodedLength(Long val) { return Bytes.SIZEOF_LONG; }
@Override
public Class<Long> encodedClass() { return Long.class; }
@Override
public int skip(PositionedByteRange src) {
src.setPosition(src.getPosition() + Bytes.SIZEOF_LONG);
return Bytes.SIZEOF_LONG;
}
@Override
public Long decode(PositionedByteRange src) {
long val = Bytes.toLong(src.getBytes(), src.getOffset() + src.getPosition());
skip(src);
return val;
}
@Override
public int encode(PositionedByteRange dst, Long val) {
Bytes.putLong(dst.getBytes(), dst.getOffset() + dst.getPosition(), val);
return skip(dst);
}
/**
* Read a {@code long} value from the buffer {@code buff}.
*/
public long decodeLong(byte[] buff, int offset) {
return Bytes.toLong(buff, offset);
}
/**
* Write instance {@code val} into buffer {@code buff}.
*/
public int encodeLong(byte[] buff, int offset, long val) {
return Bytes.putLong(buff, offset, val);
}
}