/**
* 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.util.Collections;
import java.util.List;
import java.util.Map;
import org.apache.cassandra.db.DecoratedKey;
import org.apache.cassandra.db.marshal.AbstractType;
import org.apache.cassandra.utils.ByteBufferUtil;
public class LocalPartitioner implements IPartitioner<LocalToken>
{
private final AbstractType comparator;
public LocalPartitioner(AbstractType comparator)
{
this.comparator = comparator;
}
public DecoratedKey<LocalToken> convertFromDiskFormat(ByteBuffer key)
{
return decorateKey(key);
}
public DecoratedKey<LocalToken> decorateKey(ByteBuffer key)
{
return new DecoratedKey<LocalToken>(getToken(key), key);
}
public Token midpoint(Token left, Token right)
{
throw new UnsupportedOperationException();
}
public LocalToken getMinimumToken()
{
return new LocalToken(comparator, ByteBufferUtil.EMPTY_BYTE_BUFFER);
}
public LocalToken getToken(ByteBuffer key)
{
return new LocalToken(comparator, key);
}
public LocalToken getRandomToken()
{
throw new UnsupportedOperationException();
}
public Token.TokenFactory getTokenFactory()
{
throw new UnsupportedOperationException();
}
public boolean preservesOrder()
{
return true;
}
public Map<Token, Float> describeOwnership(List<Token> sortedTokens)
{
return Collections.singletonMap((Token)getMinimumToken(), new Float(1.0));
}
}