/*
* XXL: The eXtensible and fleXible Library for data processing
*
* Copyright (C) 2000-2011 Prof. Dr. Bernhard Seeger Head of the Database Research Group Department
* of Mathematics and Computer Science University of Marburg Germany
*
* This library is free software; you can redistribute it and/or modify it under the terms of the
* GNU Lesser General Public License as published by the Free Software Foundation; either version 3
* of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this library;
* If not, see <http://www.gnu.org/licenses/>.
*
* http://code.google.com/p/xxl/
*/
package xxl.core.indexStructures.keyRanges;
import xxl.core.functions.AbstractFunction;
import xxl.core.functions.Function;
import xxl.core.indexStructures.BPlusTree.KeyRange;
import xxl.core.relational.tuples.ColumnComparableTuple;
/**
* This class represents key ranges (i.e. intervals of keys) for
* {@link xxl.core.relational.tuples.ColumnComparableTuple}. It is used to specify (range) queries
* on the BPlusTree, see {@link xxl.core.indexStructures.BPlusTree.KeyRange KeyRange}.
*
* @author Marcus Pinnecke (pinnecke@mathematik.uni-marburg.de)
*
*/
public class TupleKeyRangeFunction extends KeyRange {
/**
* Used for a functional like programming style which creates in this case a new ranges.
*/
public static Function<ColumnComparableTuple, TupleKeyRangeFunction> FACTORY_FUNCTION =
new AbstractFunction<ColumnComparableTuple, TupleKeyRangeFunction>() {
@Override
public TupleKeyRangeFunction invoke(ColumnComparableTuple argument0,
ColumnComparableTuple argument1) {
return new TupleKeyRangeFunction(argument0, argument1);
}
};
/**
* @see xxl.core.indexStructures.BPlusTree.KeyRange
*/
public TupleKeyRangeFunction(Comparable min, Comparable max) {
super(min, max);
}
/**
* @see xxl.core.indexStructures.BPlusTree.KeyRange#clone()
*/
@Override
public Object clone() {
return new TupleKeyRangeFunction(this.sepValue, this.maxBound);
}
}