- /*
- * Copyright 2001-2004 The Apache Software Foundation
- *
- * 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.apache.commons.collections.functors;
-
- import java.io.Serializable;
-
- import org.apache.commons.collections.Predicate;
-
- /**
- * Predicate implementation that returns true if both the predicates return true.
- *
- * @since Commons Collections 3.0
- * @version $Revision: 1.6 $ $Date: 2004/05/31 16:43:17 $
- *
- * @author Stephen Colebourne
- */
- public final class AndPredicate implements Predicate, PredicateDecorator, Serializable {
-
- /** Serial version UID */
- static final long serialVersionUID = 4189014213763186912L;
-
- /** The array of predicates to call */
- private final Predicate iPredicate1;
- /** The array of predicates to call */
- private final Predicate iPredicate2;
-
- /**
- * Factory to create the predicate.
- *
- * @param predicate1 the first predicate to check, not null
- * @param predicate2 the second predicate to check, not null
- * @return the <code>and</code> predicate
- * @throws IllegalArgumentException if either predicate is null
- */
- public static Predicate getInstance(Predicate predicate1, Predicate predicate2) {
- if (predicate1 == null || predicate2 == null) {
- throw new IllegalArgumentException("Predicate must not be null");
- }
- return new AndPredicate(predicate1, predicate2);
- }
-
- /**
- * Constructor that performs no validation.
- * Use <code>getInstance</code> if you want that.
- *
- * @param predicate1 the first predicate to check, not null
- * @param predicate2 the second predicate to check, not null
- */
- public AndPredicate(Predicate predicate1, Predicate predicate2) {
- super();
- iPredicate1 = predicate1;
- iPredicate2 = predicate2;
- }
-
- /**
- * Evaluates the predicate returning true if both predicates return true.
- *
- * @param object the input object
- * @return true if both decorated predicates return true
- */
- public boolean evaluate(Object object) {
- return (iPredicate1.evaluate(object) && iPredicate2.evaluate(object));
- }
-
- /**
- * Gets the two predicates being decorated as an array.
- *
- * @return the predicates
- * @since Commons Collections 3.1
- */
- public Predicate[] getPredicates() {
- return new Predicate[] {iPredicate1, iPredicate2};
- }
-
- }