org.icefaces.ace.util.collections.AllPredicate Maven / Gradle / Ivy
/*
* Copyright 2004-2014 ICEsoft Technologies Canada Corp.
*
* 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 specific language
* governing permissions and limitations under the License.
*/
package org.icefaces.ace.util.collections;
import java.io.Serializable;
import java.util.Collection;
public final class AllPredicate implements Predicate,
PredicateDecorator, Serializable {
/** Serial version UID */
private static final long serialVersionUID = -3094696765038308799L;
/** The array of predicates to call */
private final Predicate[] iPredicates;
/**
* Factory to create the predicate.
*
* If the array is size zero, the predicate always returns true.
* If the array is size one, then that predicate is returned.
*
* @param predicates the predicates to check, cloned, not null
* @return the all
predicate
* @throws IllegalArgumentException if the predicates array is null
* @throws IllegalArgumentException if any predicate in the array is null
*/
public static Predicate getInstance(Predicate[] predicates) {
FunctorUtils.validate(predicates);
if (predicates.length == 0) {
return TruePredicate.INSTANCE;
}
if (predicates.length == 1) {
return predicates[0];
}
predicates = FunctorUtils.copy(predicates);
return new AllPredicate(predicates);
}
/**
* Factory to create the predicate.
*
* If the collection is size zero, the predicate always returns true.
* If the collection is size one, then that predicate is returned.
*
* @param predicates the predicates to check, cloned, not null
* @return the all
predicate
* @throws IllegalArgumentException if the predicates array is null
* @throws IllegalArgumentException if any predicate in the array is null
*/
public static Predicate getInstance(Collection predicates) {
Predicate[] preds = FunctorUtils.validate(predicates);
if (preds.length == 0) {
return TruePredicate.INSTANCE;
}
if (preds.length == 1) {
return preds[0];
}
return new AllPredicate(preds);
}
/**
* Constructor that performs no validation.
* Use getInstance
if you want that.
*
* @param predicates the predicates to check, not cloned, not null
*/
public AllPredicate(Predicate[] predicates) {
super ();
iPredicates = predicates;
}
/**
* Evaluates the predicate returning true if all predicates return true.
*
* @param object the input object
* @return true if all decorated predicates return true
*/
public boolean evaluate(Object object) {
for (int i = 0; i < iPredicates.length; i++) {
if (iPredicates[i].evaluate(object) == false) {
return false;
}
}
return true;
}
/**
* Gets the predicates, do not modify the array.
*
* @return the predicates
* @since Commons Collections 3.1
*/
public Predicate[] getPredicates() {
return iPredicates;
}
}