package org.apache.cassandra.db.marshal;
/*
*
* 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.
*
*/
import java.nio.ByteBuffer;
import java.util.UUID;
public class LexicalUUIDType extends AbstractType
{
static UUID getUUID(byte[] bytes)
{
ByteBuffer bb = ByteBuffer.wrap(bytes);
return new UUID(bb.getLong(), bb.getLong());
}
public int compare(byte[] o1, byte[] o2)
{
if (o1.length == 0)
{
return o2.length == 0 ? 0 : -1;
}
if (o2.length == 0)
{
return 1;
}
return getUUID(o1).compareTo(getUUID(o2));
}
public String getString(byte[] bytes)
{
if (bytes.length == 0)
{
return "";
}
if (bytes.length != 16)
{
throw new MarshalException("UUIDs must be exactly 16 bytes");
}
return getUUID(bytes).toString();
}
}