1 /*

     2  * CDDL HEADER START

     3  *

     4  * The contents of this file are subject to the terms of the

     5  * Common Development and Distribution License (the "License").

     6  * You may not use this file except in compliance with the License.

     7  *

     8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

     9  * or http://www.opensolaris.org/os/licensing.

    10  * See the License for the specific language governing permissions

    11  * and limitations under the License.

    12  *

    13  * When distributing Covered Code, include this CDDL HEADER in each

    14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.

    15  * If applicable, add the following below this CDDL HEADER, with the

    16  * fields enclosed by brackets "[]" replaced with your own identifying

    17  * information: Portions Copyright [yyyy] [name of copyright owner]

    18  *

    19  * CDDL HEADER END

    20  */

    21 

    22 /*

    23  * Copyright (c) 2009, 2012, Oracle and/or its affiliates. All rights reserved.

    24  */

    25 

    26 package com.oracle.solaris.vp.util.misc.predicate;

    27 

    28 /**

    29  * The {@code TruePredicate<T>} class is a {@code Predicate} that always

    30  * returns {@code true}.  The {@link #getInstance} method is the preferred way

    31  * to get an instance of this class.

    32  */

    33 public class TruePredicate<T> implements Predicate<T> {

    34     //

    35     // Static data

    36     //

    37 

    38     private static final TruePredicate<Object> instance =

    39 	new TruePredicate<Object>();

    40 

    41     //

    42     // Predicate methods

    43     //

    44 

    45     /**

    46      * Returns true.

    47      *

    48      * @param	    o

    49      *		    the object to ignore

    50      *

    51      * @return	    {@code true}

    52      */

    53     @Override

    54     public boolean test(T o) {

    55 	return (true);

    56     }

    57 

    58     //

    59     // Static methods

    60     //

    61 

    62     /**

    63      * Gets a type-safe, immutable, singleton instance of this class.

    64      */

    65     @SuppressWarnings({"unchecked"})

    66     public static <T> TruePredicate<T> getInstance() {

    67 	return (TruePredicate<T>)instance;

    68     }

    69 }