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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.commons.collections4.functors;

import static org.apache.commons.collections4.functors.FunctorUtils.coerce;
import static org.apache.commons.collections4.functors.FunctorUtils.validate;
import static org.apache.commons.collections4.functors.TruePredicate.truePredicate;

import java.util.Collection;

import org.apache.commons.collections4.Predicate;

/**
 * Predicate implementation that returns true if all the
 * predicates return true.
 * If the array of predicates is empty, then this predicate returns true.
 * 

* NOTE: In versions prior to 3.2 an array size of zero or one * threw an exception. * * @since 3.0 * @version $Id: AllPredicate.java 1686855 2015-06-22 13:00:27Z tn $ */ public final class AllPredicate extends AbstractQuantifierPredicate { /** Serial version UID */ private static final long serialVersionUID = -3094696765038308799L; /** * 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 the type that the predicate queries * @param predicates the predicates to check, cloned, not null * @return the all predicate * @throws NullPointerException if the predicates array is null * @throws NullPointerException if any predicate in the array is null */ public static Predicate allPredicate(final Predicate... predicates) { FunctorUtils.validate(predicates); if (predicates.length == 0) { return truePredicate(); } if (predicates.length == 1) { return coerce(predicates[0]); } return new AllPredicate(FunctorUtils.copy(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 the type that the predicate queries * @param predicates the predicates to check, cloned, not null * @return the all predicate * @throws NullPointerException if the predicates array is null * @throws NullPointerException if any predicate in the array is null */ public static Predicate allPredicate(final Collection> predicates) { final Predicate[] preds = validate(predicates); if (preds.length == 0) { return truePredicate(); } if (preds.length == 1) { return coerce(preds[0]); } return new AllPredicate(preds); } /** * Constructor that performs no validation. * Use allPredicate if you want that. * * @param predicates the predicates to check, not cloned, not null */ public AllPredicate(final Predicate... predicates) { super(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(final T object) { for (final Predicate iPredicate : iPredicates) { if (!iPredicate.evaluate(object)) { return false; } } return true; } }





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