com.github.adejanovski.cassandra.jdbc.JdbcUUID Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of cassandra-jdbc-wrapper Show documentation

JDBC wrapper for the DataStax CQL Java Driver.

There is a newer version: 3.1.0

Show newest version

/*
 *
 *   Licensed 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 com.github.adejanovski.cassandra.jdbc;

import java.nio.ByteBuffer;
import java.util.UUID;



public class JdbcUUID extends AbstractJdbcUUID
{
    public static final JdbcUUID instance = new JdbcUUID();

    JdbcUUID() {}

    public UUID compose(ByteBuffer bytes)
    {
        bytes = bytes.slice();
        if (bytes.remaining() < 16)
            return new UUID(0, 0);
        return new UUID(bytes.getLong(), bytes.getLong());
    }

    public String getString(ByteBuffer bytes)
    {
        if (bytes.remaining() == 0)
        {
            return "";
        }
        if (bytes.remaining() != 16)
        {
            throw new MarshalException("UUIDs must be exactly 16 bytes");
        }

        return compose(bytes).toString();
    }
    
    public UUID compose(Object obj)
    {
        return UUID.fromString(obj.toString());
    }


	@Override
	public Object decompose(UUID obj) {
		// TODO Auto-generated method stub
		return (Object)obj;
	}


	
}