package ca.pfv.spmf.algorithms.sequentialpatterns.prefixSpan_AGP.items.creators;
import java.util.HashMap;
import java.util.Map;
import ca.pfv.spmf.algorithms.sequentialpatterns.prefixSpan_AGP.items.Item;
import ca.pfv.spmf.algorithms.sequentialpatterns.prefixSpan_AGP.items.abstractions.Abstraction_Generic;
import ca.pfv.spmf.algorithms.sequentialpatterns.prefixSpan_AGP.items.abstractions.ItemAbstractionPair;
/**
* Class that implements a creator for pairs <item,abstraction> that are used in a pattern implementation.
*
* Copyright Antonio Gomariz PeƱalver 2013
*
* This file is part of the SPMF DATA MINING SOFTWARE
* (http://www.philippe-fournier-viger.com/spmf).
*
* SPMF is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* SPMF is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with SPMF. If not, see <http://www.gnu.org/licenses/>.
*
* @author agomariz
*/
public class ItemAbstractionPairCreator {
public static void sclear() {
poolPairs.clear();
}
/**
* Static reference to make the class singleton
*/
private static ItemAbstractionPairCreator instance = null;
private static Map<Item, Map<Abstraction_Generic, ItemAbstractionPair>> poolPairs = new HashMap<Item, Map<Abstraction_Generic, ItemAbstractionPair>>();
private ItemAbstractionPairCreator(){
}
/**
* Get the only instance of this singleton creator object
* @return the instance
*/
public static ItemAbstractionPairCreator getInstance(){
if(instance==null){
instance=new ItemAbstractionPairCreator();
}
return instance;
}
public ItemAbstractionPair getItemAbstractionPair(Item item, Abstraction_Generic abstraction) {
return new ItemAbstractionPair(item, abstraction);
}
}