/**
* 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.dht;
import java.nio.ByteBuffer;
import java.nio.charset.CharacterCodingException;
import java.text.Collator;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import org.apache.cassandra.utils.ByteBufferUtil;
public class CollatingOrderPreservingPartitioner extends AbstractByteOrderedPartitioner
{
static final Collator collator = Collator.getInstance(new Locale("en", "US"));
public BytesToken getToken(ByteBuffer key)
{
if (key.remaining() == 0)
return MINIMUM;
String skey;
try
{
skey = ByteBufferUtil.string(key);
}
catch (CharacterCodingException e)
{
throw new RuntimeException("The provided key was not UTF8 encoded.", e);
}
return new BytesToken(ByteBuffer.wrap(collator.getCollationKey(skey).toByteArray()));
}
public Map<Token, Float> describeOwnership(List<Token> sortedTokens){ throw new UnsupportedOperationException(); }
}