/*
* 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.math.BigDecimal;
import java.nio.ByteBuffer;
import org.apache.cassandra.cql3.CQL3Type;
import org.apache.cassandra.serializers.TypeSerializer;
import org.apache.cassandra.serializers.DecimalSerializer;
import org.apache.cassandra.serializers.MarshalException;
import org.apache.cassandra.utils.ByteBufferUtil;
public class DecimalType extends AbstractType<BigDecimal>
{
public static final DecimalType instance = new DecimalType();
DecimalType() {} // singleton
public int compare(ByteBuffer bb0, ByteBuffer bb1)
{
if (bb0.remaining() == 0)
{
return bb1.remaining() == 0 ? 0 : -1;
}
if (bb1.remaining() == 0)
{
return 1;
}
return compose(bb0).compareTo(compose(bb1));
}
public ByteBuffer fromString(String source) throws MarshalException
{
// Return an empty ByteBuffer for an empty string.
if (source.isEmpty()) return ByteBufferUtil.EMPTY_BYTE_BUFFER;
BigDecimal decimal;
try
{
decimal = new BigDecimal(source);
}
catch (Exception e)
{
throw new MarshalException(String.format("unable to make BigDecimal from '%s'", source), e);
}
return decompose(decimal);
}
public CQL3Type asCQL3Type()
{
return CQL3Type.Native.DECIMAL;
}
public TypeSerializer<BigDecimal> getSerializer()
{
return DecimalSerializer.instance;
}
}