AbstractHashTableProber.java example

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 *
 * Copyright (C) 2010-2014 by the Stratosphere project (http://stratosphere.eu)
 *
 * Licensed 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
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package eu.stratosphere.pact.runtime.hash;

import java.io.IOException;

import eu.stratosphere.api.common.typeutils.TypeComparator;
import eu.stratosphere.api.common.typeutils.TypePairComparator;

/**
 * @param <PT> probe side type
 * @param <BT> build side type
 */
public abstract class AbstractHashTableProber<PT, BT> {
	
	protected final TypeComparator<PT> probeTypeComparator;
	
	protected final TypePairComparator<PT, BT> pairComparator;
	
	public AbstractHashTableProber(TypeComparator<PT> probeTypeComparator, TypePairComparator<PT, BT> pairComparator) {
		this.probeTypeComparator = probeTypeComparator;
		this.pairComparator = pairComparator;
	}
	
	public abstract boolean getMatchFor(PT probeSideRecord, BT targetForMatch);
	
	public abstract void updateMatch(BT record) throws IOException;
}