blob: 9815233cf3626b75605eea2afe5b802bbd678167 [file] [log] [blame]
/*
* 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.index.sasi.utils;
import java.nio.ByteBuffer;
import org.apache.cassandra.db.marshal.*;
import org.apache.cassandra.serializers.MarshalException;
public class TypeUtil
{
public static boolean isValid(ByteBuffer term, AbstractType<?> validator)
{
try
{
validator.validate(term);
return true;
}
catch (MarshalException e)
{
return false;
}
}
public static ByteBuffer tryUpcast(ByteBuffer term, AbstractType<?> validator)
{
if (term.remaining() == 0)
return null;
try
{
if (validator instanceof Int32Type && term.remaining() == 2)
{
return Int32Type.instance.decompose((int) term.getShort(term.position()));
}
else if (validator instanceof LongType)
{
long upcastToken;
switch (term.remaining())
{
case 2:
upcastToken = (long) term.getShort(term.position());
break;
case 4:
upcastToken = (long) Int32Type.instance.compose(term);
break;
default:
upcastToken = Long.parseLong(UTF8Type.instance.getString(term));
}
return LongType.instance.decompose(upcastToken);
}
else if (validator instanceof DoubleType && term.remaining() == 4)
{
return DoubleType.instance.decompose((double) FloatType.instance.compose(term));
}
// maybe it was a string after all
return validator.fromString(UTF8Type.instance.getString(term));
}
catch (Exception e)
{
return null;
}
}
}