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 * 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
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 *      http://www.apache.org/licenses/LICENSE-2.0
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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
/** * Predicate implementation that returns true if all the * predicates return true. * If the array of predicates is empty, then this predicate returns true. * <p> * NOTE: In versions prior to 3.2 an array size of zero or one * threw an exception. * * @since 3.0 */
public final class AllPredicate<T> extends AbstractQuantifierPredicate<T> {
Serial version UID
/** 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.

Params:
  • predicates – the predicates to check, cloned, not null
Type parameters:
  • <T> – the type that the predicate queries
Throws:
Returns:the all predicate
/** * Factory to create the predicate. * <p> * If the array is size zero, the predicate always returns true. * If the array is size one, then that predicate is returned. * * @param <T> the type that the predicate queries * @param predicates the predicates to check, cloned, not null * @return the <code>all</code> predicate * @throws NullPointerException if the predicates array is null * @throws NullPointerException if any predicate in the array is null */
public static <T> Predicate<T> allPredicate(final Predicate<? super T>... 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.

Params:
  • predicates – the predicates to check, cloned, not null
Type parameters:
  • <T> – the type that the predicate queries
Throws:
Returns:the all predicate
/** * Factory to create the predicate. * <p> * If the collection is size zero, the predicate always returns true. * If the collection is size one, then that predicate is returned. * * @param <T> the type that the predicate queries * @param predicates the predicates to check, cloned, not null * @return the <code>all</code> predicate * @throws NullPointerException if the predicates array is null * @throws NullPointerException if any predicate in the array is null */
public static <T> Predicate<T> allPredicate(final Collection<? extends Predicate<? super T>> predicates) { final Predicate<? super T>[] 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.
Params:
  • predicates – the predicates to check, not cloned, not null
/** * Constructor that performs no validation. * Use <code>allPredicate</code> if you want that. * * @param predicates the predicates to check, not cloned, not null */
public AllPredicate(final Predicate<? super T>... predicates) { super(predicates); }
Evaluates the predicate returning true if all predicates return true.
Params:
  • object – the input object
Returns:true if all decorated predicates return true
/** * Evaluates the predicate returning true if all predicates return true. * * @param object the input object * @return true if all decorated predicates return true */
@Override public boolean evaluate(final T object) { for (final Predicate<? super T> iPredicate : iPredicates) { if (!iPredicate.evaluate(object)) { return false; } } return true; } }