/*****************************************************************
* 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.cayenne.crypto.transformer.value;
/**
* @since 4.0
*/
public class ShortConverter implements BytesConverter<Short> {
public static final BytesConverter<Short> INSTANCE = new ShortConverter();
private static final int BYTES = 2;
static short getShort(byte[] bytes) {
if (bytes.length < BYTES) {
return ByteConverter.getByte(bytes);
}
if (bytes.length > BYTES) {
throw new IllegalArgumentException("byte[] is too large for a single short value: " + bytes.length);
}
return (short) ((bytes[0] & 0xFF) << 8 | (bytes[1] & 0xFF));
}
static byte[] getBytes(short k) {
if (k >= Byte.MIN_VALUE && k <= Byte.MAX_VALUE) {
return ByteConverter.getBytes((byte) k);
}
return new byte[]{
(byte) (k >> 8),
(byte) k};
}
@Override
public Short fromBytes(byte[] bytes) {
return getShort(bytes);
}
@Override
public byte[] toBytes(Short value) {
return getBytes(value);
}
}