/**
* 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 java.util.HashMap;
import java.util.Map;
import java.util.List;
import org.apache.cassandra.config.ConfigurationException;
public class ReversedType<T> extends AbstractType<T>
{
// interning instances
private static final Map<AbstractType, ReversedType> instances = new HashMap<AbstractType, ReversedType>();
// package protected for unit tests sake
final AbstractType<T> baseType;
public static <T> ReversedType<T> getInstance(TypeParser parser) throws ConfigurationException
{
List<AbstractType> types = parser.getTypeParameters();
if (types.size() != 1)
throw new ConfigurationException("ReversedType takes exactly one argument, " + types.size() + " given");
return getInstance(types.get(0));
}
public static synchronized <T> ReversedType<T> getInstance(AbstractType<T> baseType)
{
ReversedType type = instances.get(baseType);
if (type == null)
{
type = new ReversedType(baseType);
instances.put(baseType, type);
}
return (ReversedType<T>) type;
}
private ReversedType(AbstractType<T> baseType)
{
this.baseType = baseType;
}
public int compare(ByteBuffer o1, ByteBuffer o2)
{
// An empty byte buffer is always smaller
if (o1.remaining() == 0)
{
return o2.remaining() == 0 ? 0 : -1;
}
if (o2.remaining() == 0)
{
return 1;
}
return -baseType.compare(o1, o2);
}
public String getString(ByteBuffer bytes)
{
return baseType.getString(bytes);
}
public ByteBuffer fromString(String source)
{
return baseType.fromString(source);
}
public void validate(ByteBuffer bytes) throws MarshalException
{
baseType.validate(bytes);
}
public T compose(ByteBuffer bytes)
{
return baseType.compose(bytes);
}
public ByteBuffer decompose(T value)
{
return baseType.decompose(value);
}
public Class<T> getType()
{
return baseType.getType();
}
public String toString(T t)
{
return baseType.toString(t);
}
public boolean isSigned()
{
return baseType.isSigned();
}
public boolean isCaseSensitive()
{
return baseType.isCaseSensitive();
}
public boolean isCurrency()
{
return baseType.isCurrency();
}
public int getPrecision(T obj)
{
return baseType.getPrecision(obj);
}
public int getScale(T obj)
{
return baseType.getScale(obj);
}
public int getJdbcType()
{
return baseType.getJdbcType();
}
public boolean needsQuotes()
{
return baseType.needsQuotes();
}
@Override
public String toString()
{
return getClass().getName() + "(" + baseType + ")";
}
}