/*
* 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.jbpm.jpdl.el.impl;
/**
*
* <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$
**/
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 [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 [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 [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 [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 = 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_LOWER_BOUND;
for (int i = 0; i < len; i++, val++) {
ret [i] = new Long (val);
}
return ret;
}
//-------------------------------------
}