- /*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 1999 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution, if
- * any, must include the following acknowlegement:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowlegement may appear in the software itself,
- * if and wherever such third-party acknowlegements normally appear.
- *
- * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
- * Foundation" must not be used to endorse or promote products derived
- * from this software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache"
- * nor may "Apache" appear in their names without prior written
- * permission of the Apache Group.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- *
- */
-
- package org.apache.commons.el;
-
- /**
- *
- * <p>This converts primitive values to their Object counterparts.
- * For bytes and chars, values from 0 to 255 are cached. For shorts,
- * ints, and longs, values -1000 to 1000 are cached.
- *
- * @author Nathan Abramson - Art Technology Group
- * @version $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: luehe $
- **/
-
- class PrimitiveObjects
- {
- //-------------------------------------
- // Constants
- //-------------------------------------
-
- static int BYTE_LOWER_BOUND = 0;
- static int BYTE_UPPER_BOUND = 255;
- static int CHARACTER_LOWER_BOUND = 0;
- static int CHARACTER_UPPER_BOUND = 255;
- static int SHORT_LOWER_BOUND = -1000;
- static int SHORT_UPPER_BOUND = 1000;
- static int INTEGER_LOWER_BOUND = -1000;
- static int INTEGER_UPPER_BOUND = 1000;
- static int LONG_LOWER_BOUND = -1000;
- static int LONG_UPPER_BOUND = 1000;
-
- //-------------------------------------
- // Member variables
- //-------------------------------------
-
- static Byte [] mBytes = createBytes ();
- static Character [] mCharacters = createCharacters ();
- static Short [] mShorts = createShorts ();
- static Integer [] mIntegers = createIntegers ();
- static Long [] mLongs = createLongs ();
-
- //-------------------------------------
- // Getting primitive values
- //-------------------------------------
- public static Boolean getBoolean (boolean pValue)
- {
- return
- pValue ?
- Boolean.TRUE :
- Boolean.FALSE;
- }
-
- //-------------------------------------
- public static Byte getByte (byte pValue)
- {
- if (pValue >= BYTE_LOWER_BOUND &&
- pValue <= BYTE_UPPER_BOUND) {
- return mBytes [((int) pValue) - BYTE_LOWER_BOUND];
- }
- else {
- return new Byte (pValue);
- }
- }
-
- //-------------------------------------
- public static Character getCharacter (char pValue)
- {
- if (pValue >= CHARACTER_LOWER_BOUND &&
- pValue <= CHARACTER_UPPER_BOUND) {
- return mCharacters [((int) pValue) - CHARACTER_LOWER_BOUND];
- }
- else {
- return new Character (pValue);
- }
- }
-
- //-------------------------------------
- public static Short getShort (short pValue)
- {
- if (pValue >= SHORT_LOWER_BOUND &&
- pValue <= SHORT_UPPER_BOUND) {
- return mShorts [((int) pValue) - SHORT_LOWER_BOUND];
- }
- else {
- return new Short (pValue);
- }
- }
-
- //-------------------------------------
- public static Integer getInteger (int pValue)
- {
- if (pValue >= INTEGER_LOWER_BOUND &&
- pValue <= INTEGER_UPPER_BOUND) {
- return mIntegers [((int) pValue) - INTEGER_LOWER_BOUND];
- }
- else {
- return new Integer (pValue);
- }
- }
-
- //-------------------------------------
- public static Long getLong (long pValue)
- {
- if (pValue >= LONG_LOWER_BOUND &&
- pValue <= LONG_UPPER_BOUND) {
- return mLongs [((int) pValue) - LONG_LOWER_BOUND];
- }
- else {
- return new Long (pValue);
- }
- }
-
- //-------------------------------------
- public static Float getFloat (float pValue)
- {
- return new Float (pValue);
- }
-
- //-------------------------------------
- public static Double getDouble (double pValue)
- {
- return new Double (pValue);
- }
-
- //-------------------------------------
- // Object class equivalents of primitive classes
- //-------------------------------------
- /**
- *
- * If the given class is a primitive class, returns the object
- * version of that class. Otherwise, the class is just returned.
- **/
- public static Class getPrimitiveObjectClass (Class pClass)
- {
- if (pClass == Boolean.TYPE) {
- return Boolean.class;
- }
- else if (pClass == Byte.TYPE) {
- return Byte.class;
- }
- else if (pClass == Short.TYPE) {
- return Short.class;
- }
- else if (pClass == Character.TYPE) {
- return Character.class;
- }
- else if (pClass == Integer.TYPE) {
- return Integer.class;
- }
- else if (pClass == Long.TYPE) {
- return Long.class;
- }
- else if (pClass == Float.TYPE) {
- return Float.class;
- }
- else if (pClass == Double.TYPE) {
- return Double.class;
- }
- else {
- return pClass;
- }
- }
-
- //-------------------------------------
- // Initializing the cached values
- //-------------------------------------
- static Byte [] createBytes ()
- {
- int len = BYTE_UPPER_BOUND - BYTE_LOWER_BOUND + 1;
- Byte [] ret = new Byte [len];
- byte val = (byte) BYTE_LOWER_BOUND;
- for (int i = 0; i < len; i++, val++) {
- ret [i] = new Byte (val);
- }
- return ret;
- }
-
- //-------------------------------------
- static Character [] createCharacters ()
- {
- int len = CHARACTER_UPPER_BOUND - CHARACTER_LOWER_BOUND + 1;
- Character [] ret = new Character [len];
- char val = (char) CHARACTER_LOWER_BOUND;
- for (int i = 0; i < len; i++, val++) {
- ret [i] = new Character (val);
- }
- return ret;
- }
-
- //-------------------------------------
- static Short [] createShorts ()
- {
- int len = SHORT_UPPER_BOUND - SHORT_LOWER_BOUND + 1;
- Short [] ret = new Short [len];
- short val = (short) SHORT_LOWER_BOUND;
- for (int i = 0; i < len; i++, val++) {
- ret [i] = new Short (val);
- }
- return ret;
- }
-
- //-------------------------------------
- static Integer [] createIntegers ()
- {
- int len = INTEGER_UPPER_BOUND - INTEGER_LOWER_BOUND + 1;
- Integer [] ret = new Integer [len];
- int val = (int) INTEGER_LOWER_BOUND;
- for (int i = 0; i < len; i++, val++) {
- ret [i] = new Integer (val);
- }
- return ret;
- }
-
- //-------------------------------------
- static Long [] createLongs ()
- {
- int len = LONG_UPPER_BOUND - LONG_LOWER_BOUND + 1;
- Long [] ret = new Long [len];
- long val = (long) LONG_LOWER_BOUND;
- for (int i = 0; i < len; i++, val++) {
- ret [i] = new Long (val);
- }
- return ret;
- }
-
- //-------------------------------------
-
- }