/* 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.predicates;
import java.util.List;
/**
* This class provides a logical OR predicate. The OR predicate represents the
* disjunction of two predicates to a new predicate that returns
* <code>false</code> if and only if both underlying predicates return
* <code>false</code>.
*
* @param <P> the type of the predicate's parameters.
*/
public class Or<P> extends BinaryPredicate<P> {
/**
* Creates a new OR predicate that represents the disjunction of the
* specified predicates.
*
* @param predicate0 the first predicate of the disjunction.
* @param predicate1 the second predicate of the disjunction.
*/
public Or (Predicate<? super P> predicate0, Predicate<? super P> predicate1) {
super(predicate0, predicate1);
}
/**
* Returns <code>false</code> if and only if both underlying predicates
* return <code>false</code>, otherwise <code>true</code> is returned.
*
* @param arguments the arguments to the underlying predicates.
* @return <code>false</code> if and only if both underlying predicates
* return <code>false</code>, otherwise <code>true</code>.
*/
@Override
public boolean invoke(List<? extends P> arguments) {
return predicate0.invoke(arguments) || predicate1.invoke(arguments);
}
/**
* Returns <code>false</code> if and only if both underlying predicates
* return <code>false</code>, otherwise <code>true</code> is returned.
*
* @return <code>false</code> if and only if both underlying predicates
* return <code>false</code>, otherwise <code>true</code>.
*/
@Override
public boolean invoke() {
return predicate0.invoke() || predicate1.invoke();
}
/**
* Returns <code>false</code> if and only if both underlying predicates
* return <code>false</code>, otherwise <code>true</code> is returned.
*
* @param argument the argument to the underlying predicates.
* @return <code>false</code> if and only if both underlying predicates
* return <code>false</code>, otherwise <code>true</code>.
*/
@Override
public boolean invoke(P argument) {
return predicate0.invoke(argument) || predicate1.invoke(argument);
}
/**
* Returns <code>false</code> if and only if both underlying predicates
* return <code>false</code>, otherwise <code>true</code> is returned.
*
* @param argument0 the first arguments to the underlying predicates.
* @param argument1 the second arguments to the underlying predicates.
* @return <code>false</code> if and only if both underlying predicates
* return <code>false</code>, otherwise <code>true</code>.
*/
@Override
public boolean invoke(P argument0, P argument1) {
return predicate0.invoke(argument0, argument1) || predicate1.invoke(argument0, argument1);
}
}