/*
* 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.LongSerializer;
import org.apache.cassandra.serializers.MarshalException;
import org.apache.cassandra.utils.ByteBufferUtil;
public class LongType extends AbstractType<Long>
{
public static final LongType instance = new LongType();
LongType() {} // singleton
public int compare(ByteBuffer o1, ByteBuffer o2)
{
return compareLongs(o1, o2);
}
public static int compareLongs(ByteBuffer o1, ByteBuffer o2)
{
if (!o1.hasRemaining() || !o2.hasRemaining())
return o1.hasRemaining() ? 1 : o2.hasRemaining() ? -1 : 0;
int diff = o1.get(o1.position()) - o2.get(o2.position());
if (diff != 0)
return diff;
return ByteBufferUtil.compareUnsigned(o1, o2);
}
public ByteBuffer fromString(String source) throws MarshalException
{
// Return an empty ByteBuffer for an empty string.
if (source.isEmpty())
return ByteBufferUtil.EMPTY_BYTE_BUFFER;
long longType;
try
{
longType = Long.parseLong(source);
}
catch (Exception e)
{
throw new MarshalException(String.format("unable to make long from '%s'", source), e);
}
return decompose(longType);
}
@Override
public boolean isValueCompatibleWithInternal(AbstractType<?> otherType)
{
return this == otherType || otherType == DateType.instance || otherType == TimestampType.instance;
}
public CQL3Type asCQL3Type()
{
return CQL3Type.Native.BIGINT;
}
public TypeSerializer<Long> getSerializer()
{
return LongSerializer.instance;
}
}