/*
* 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.db.marshal;
import java.nio.ByteBuffer;
import org.apache.cassandra.cql3.CQL3Type;
import org.apache.cassandra.serializers.TypeSerializer;
import org.apache.cassandra.serializers.BooleanSerializer;
import org.apache.cassandra.serializers.MarshalException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class BooleanType extends AbstractType<Boolean>
{
private static final Logger logger = LoggerFactory.getLogger(BooleanType.class);
public static final BooleanType instance = new BooleanType();
BooleanType() {} // singleton
public int compare(ByteBuffer o1, ByteBuffer o2)
{
if (!o1.hasRemaining() || !o2.hasRemaining())
return o1.hasRemaining() ? 1 : o2.hasRemaining() ? -1 : 0;
// False is 0, True is anything else, makes False sort before True.
byte b1 = o1.get(o1.position());
byte b2 = o2.get(o2.position());
if (b1 == 0)
return b2 == 0 ? 0 : -1;
return b2 == 0 ? 1 : 0;
}
public ByteBuffer fromString(String source) throws MarshalException
{
if (source.isEmpty()|| source.equalsIgnoreCase(Boolean.FALSE.toString()))
return decompose(false);
if (source.equalsIgnoreCase(Boolean.TRUE.toString()))
return decompose(true);
throw new MarshalException(String.format("unable to make boolean from '%s'", source));
}
public CQL3Type asCQL3Type()
{
return CQL3Type.Native.BOOLEAN;
}
public TypeSerializer<Boolean> getSerializer()
{
return BooleanSerializer.instance;
}
}