| /* |
| * 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.cassandra.serializers; |
| |
| import java.nio.ByteBuffer; |
| import java.util.UUID; |
| |
| import org.apache.cassandra.utils.ByteBufferUtil; |
| import org.apache.cassandra.utils.UUIDGen; |
| |
| public class UUIDSerializer implements TypeSerializer<UUID> |
| { |
| public static final UUIDSerializer instance = new UUIDSerializer(); |
| |
| public UUID deserialize(ByteBuffer bytes) |
| { |
| return bytes.remaining() == 0 ? null : UUIDGen.getUUID(bytes); |
| } |
| |
| public ByteBuffer serialize(UUID value) |
| { |
| return value == null ? ByteBufferUtil.EMPTY_BYTE_BUFFER : UUIDGen.toByteBuffer(value); |
| } |
| |
| public void validate(ByteBuffer bytes) throws MarshalException |
| { |
| if (bytes.remaining() != 16 && bytes.remaining() != 0) |
| throw new MarshalException(String.format("UUID should be 16 or 0 bytes (%d)", bytes.remaining())); |
| // not sure what the version should be for this. |
| } |
| |
| public String toString(UUID value) |
| { |
| return value == null ? "" : value.toString(); |
| } |
| |
| public Class<UUID> getType() |
| { |
| return UUID.class; |
| } |
| } |