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 *
 *      http://www.apache.org/licenses/LICENSE-2.0
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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.
Author:
Stephen Colebourne
Since:
Commons Collections 3.0
Version:
$Revision: 646777 $ $Date: 2008-04-10 14:33:15 +0200 (Thu, 10 Apr 2008) $/**
 * Predicate implementation that returns true if both the predicates return true.
 * 
 * @since Commons Collections 3.0
 * @version $Revision: 646777 $ $Date: 2008-04-10 14:33:15 +0200 (Thu, 10 Apr 2008) $
 *
 * @author Stephen Colebourne
 */
public final class AndPredicate implements Predicate, PredicateDecorator, Serializable {

    
Serial version UID /** Serial version UID */
    private static final long serialVersionUID = 4189014213763186912L;
    
    
The array of predicates to call /** The array of predicates to call */
    private final Predicate iPredicate1;
    
The array of predicates to call /** The array of predicates to call */
    private final Predicate iPredicate2;
    
    
Factory to create the predicate.
Params:
predicate1 –  the first predicate to check, not null
predicate2 –  the second predicate to check, not null
Throws:
IllegalArgumentException – if either predicate is null
Returns:
the and predicate/**
     * 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 getInstance if you want that.
Params:
predicate1 –  the first predicate to check, not null
predicate2 –  the second predicate to check, not null/**
     * 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.
Params:
object –  the input object
Returns:
true if both decorated predicates return true/**
     * 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.
Returns:
the predicates
Since:
Commons Collections 3.1/**
     * 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};
    }

}