/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
*
* Portions Copyright Apache Software Foundation.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
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* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
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* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
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*/
package org.apache.taglibs.standard.lang.jstl;
import java.beans.PropertyEditor;
import java.beans.PropertyEditorManager;
/**
*
* <p>This class contains the logic for coercing data types before
* operators are applied to them.
*
* <p>The following is the list of rules applied for various type
* conversions.
*
* <ul><pre>
* Applying arithmetic operator
* Binary operator - A {+,-,*} B
* if A and B are null
* return 0
* if A or B is Float, Double, or String containing ".", "e", or "E"
* coerce both A and B to Double
* apply operator
* otherwise
* coerce both A and B to Long
* apply operator
* if operator results in exception (such as divide by 0), error
*
* Binary operator - A {/,div} B
* if A and B are null
* return 0
* otherwise
* coerce both A and B to Double
* apply operator
* if operator results in exception (such as divide by 0), error
*
* Binary operator - A {%,mod} B
* if A and B are null
* return 0
* if A or B is Float, Double, or String containing ".", "e" or "E"
* coerce both to Double
* apply operator
* otherwise
* coerce both A and B to Long
* apply operator
* if operator results in exception (such as divide by 0), error
*
* Unary minus operator - -A
* if A is null
* return 0
* if A is String
* if A contains ".", "e", or "E"
* coerce to Double, apply operator
* otherwise
* coerce to a Long and apply operator
* if A is Byte,Short,Integer,Long,Float,Double
* retain type, apply operator
* if operator results in exception, error
* otherwise
* error
*
* Applying "empty" operator - empty A
* if A is null
* return true
* if A is zero-length String
* return true
* if A is zero-length array
* return true
* if A is List and ((List) A).isEmpty()
* return true
* if A is Map and ((Map) A).isEmpty()
* return true
* otherwise
* return false
*
* Applying logical operators
* Binary operator - A {and,or} B
* coerce both A and B to Boolean, apply operator
* NOTE - operator stops as soon as expression can be determined, i.e.,
* A and B and C and D - if B is false, then only A and B is evaluated
* Unary not operator - not A
* coerce A to Boolean, apply operator
*
* Applying relational operator
* A {<,>,<=,>=,lt,gt,lte,gte} B
* if A==B
* if operator is >= or <=
* return true
* otherwise
* return false
* if A or B is null
* return false
* if A or B is Float or Double
* coerce both A and B to Double
* apply operator
* if A or B is Byte,Short,Character,Integer,Long
* coerce both A and B to Long
* apply operator
* if A or B is String
* coerce both A and B to String, compare lexically
* if A is Comparable
* if A.compareTo (B) throws exception
* error
* otherwise
* use result of A.compareTo(B)
* if B is Comparable
* if B.compareTo (A) throws exception
* error
* otherwise
* use result of B.compareTo(A)
* otherwise
* error
*
* Applying equality operator
* A {==,!=} B
* if A==B
* apply operator
* if A or B is null
* return false for ==, true for !=
* if A or B is Float or Double
* coerce both A and B to Double
* apply operator
* if A or B is Byte,Short,Character,Integer,Long
* coerce both A and B to Long
* apply operator
* if A or B is Boolean
* coerce both A and B to Boolean
* apply operator
* if A or B is String
* coerce both A and B to String, compare lexically
* otherwise
* if an error occurs while calling A.equals(B)
* error
* apply operator to result of A.equals(B)
*
* coercions
*
* coerce A to String
* A is String
* return A
* A is null
* return ""
* A.toString throws exception
* error
* otherwise
* return A.toString
*
* coerce A to primitive Number type N
* A is null or ""
* return 0
* A is Character
* convert to short, apply following rules
* A is Boolean
* error
* A is Number type N
* return A
* A is Number with less precision than N
* coerce quietly
* A is Number with greater precision than N
* coerce quietly
* A is String
* new N.valueOf(A) throws exception
* error
* return N.valueOf(A)
* otherwise
* error
*
* coerce A to Character should be
* A is null or ""
* return (char) 0
* A is Character
* return A
* A is Boolean
* error
* A is Number with less precision than short
* coerce quietly - return (char) A
* A is Number with greater precision than short
* coerce quietly - return (char) A
* A is String
* return A.charAt (0)
* otherwise
* error
*
* coerce A to Boolean
* A is null or ""
* return false
* A is Boolean
* return A
* A is String
* Boolean.valueOf(A) throws exception
* error
* return Boolean.valueOf(A)
* otherwise
* error
*
* coerce A to any other type T
* A is null
* return null
* A is assignable to T
* coerce quietly
* A is String
* T has no PropertyEditor
* if A is "", return null
* otherwise error
* T's PropertyEditor throws exception
* if A is "", return null
* otherwise error
* otherwise
* apply T's PropertyEditor
* otherwise
* error
* </pre></ul>
*
* @author Nathan Abramson - Art Technology Group
* @version $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: tcfujii $
**/
public class Coercions
{
//-------------------------------------
/**
*
* Coerces the given value to the specified class.
**/
public static Object coerce (Object pValue,
Class pClass,
Logger pLogger)
throws ELException
{
if (pClass == String.class) {
return coerceToString (pValue, pLogger);
}
else if (isPrimitiveNumberClass (pClass)) {
return coerceToPrimitiveNumber (pValue, pClass, pLogger);
}
else if (pClass == Character.class ||
pClass == Character.TYPE) {
return coerceToCharacter (pValue, pLogger);
}
else if (pClass == Boolean.class ||
pClass == Boolean.TYPE) {
return coerceToBoolean (pValue, pLogger);
}
else {
return coerceToObject (pValue, pClass, pLogger);
}
}
//-------------------------------------
/**
*
* Returns true if the given class is Byte, Short, Integer, Long,
* Float, Double
**/
static boolean isPrimitiveNumberClass (Class pClass)
{
return
pClass == Byte.class ||
pClass == Byte.TYPE ||
pClass == Short.class ||
pClass == Short.TYPE ||
pClass == Integer.class ||
pClass == Integer.TYPE ||
pClass == Long.class ||
pClass == Long.TYPE ||
pClass == Float.class ||
pClass == Float.TYPE ||
pClass == Double.class ||
pClass == Double.TYPE;
}
//-------------------------------------
/**
*
* Coerces the specified value to a String
**/
public static String coerceToString (Object pValue,
Logger pLogger)
throws ELException
{
if (pValue == null) {
return "";
}
else if (pValue instanceof String) {
return (String) pValue;
}
else {
try {
return pValue.toString ();
}
catch (Exception exc) {
if (pLogger.isLoggingError ()) {
pLogger.logError (Constants.TOSTRING_EXCEPTION,
exc,
pValue.getClass ().getName ());
}
return "";
}
}
}
//-------------------------------------
/**
*
* Coerces a value to the given primitive number class
**/
public static Number coerceToPrimitiveNumber (Object pValue,
Class pClass,
Logger pLogger)
throws ELException
{
if (pValue == null ||
"".equals (pValue)) {
return coerceToPrimitiveNumber (0, pClass);
}
else if (pValue instanceof Character) {
char val = ((Character) pValue).charValue ();
return coerceToPrimitiveNumber ((short) val, pClass);
}
else if (pValue instanceof Boolean) {
if (pLogger.isLoggingError ()) {
pLogger.logError (Constants.BOOLEAN_TO_NUMBER,
pValue,
pClass.getName ());
}
return coerceToPrimitiveNumber (0, pClass);
}
else if (pValue.getClass () == pClass) {
return (Number) pValue;
}
else if (pValue instanceof Number) {
return coerceToPrimitiveNumber ((Number) pValue, pClass);
}
else if (pValue instanceof String) {
try {
return coerceToPrimitiveNumber ((String) pValue, pClass);
}
catch (Exception exc) {
if (pLogger.isLoggingError ()) {
pLogger.logError
(Constants.STRING_TO_NUMBER_EXCEPTION,
(String) pValue,
pClass.getName ());
}
return coerceToPrimitiveNumber (0, pClass);
}
}
else {
if (pLogger.isLoggingError ()) {
pLogger.logError
(Constants.COERCE_TO_NUMBER,
pValue.getClass ().getName (),
pClass.getName ());
}
return coerceToPrimitiveNumber (0, pClass);
}
}
//-------------------------------------
/**
*
* Coerces a value to an Integer, returning null if the coercion
* isn't possible.
**/
public static Integer coerceToInteger (Object pValue,
Logger pLogger)
throws ELException
{
if (pValue == null) {
return null;
}
else if (pValue instanceof Character) {
return PrimitiveObjects.getInteger
((int) (((Character) pValue).charValue ()));
}
else if (pValue instanceof Boolean) {
if (pLogger.isLoggingWarning ()) {
pLogger.logWarning (Constants.BOOLEAN_TO_NUMBER,
pValue,
Integer.class.getName ());
}
return PrimitiveObjects.getInteger
(((Boolean) pValue).booleanValue () ? 1 : 0);
}
else if (pValue instanceof Integer) {
return (Integer) pValue;
}
else if (pValue instanceof Number) {
return PrimitiveObjects.getInteger (((Number) pValue).intValue ());
}
else if (pValue instanceof String) {
try {
return Integer.valueOf ((String) pValue);
}
catch (Exception exc) {
if (pLogger.isLoggingWarning ()) {
pLogger.logWarning
(Constants.STRING_TO_NUMBER_EXCEPTION,
(String) pValue,
Integer.class.getName ());
}
return null;
}
}
else {
if (pLogger.isLoggingWarning ()) {
pLogger.logWarning
(Constants.COERCE_TO_NUMBER,
pValue.getClass ().getName (),
Integer.class.getName ());
}
return null;
}
}
//-------------------------------------
/**
*
* Coerces a long to the given primitive number class
**/
static Number coerceToPrimitiveNumber (long pValue,
Class pClass)
throws ELException
{
if (pClass == Byte.class || pClass == Byte.TYPE) {
return PrimitiveObjects.getByte ((byte) pValue);
}
else if (pClass == Short.class || pClass == Short.TYPE) {
return PrimitiveObjects.getShort ((short) pValue);
}
else if (pClass == Integer.class || pClass == Integer.TYPE) {
return PrimitiveObjects.getInteger ((int) pValue);
}
else if (pClass == Long.class || pClass == Long.TYPE) {
return PrimitiveObjects.getLong ((long) pValue);
}
else if (pClass == Float.class || pClass == Float.TYPE) {
return PrimitiveObjects.getFloat ((float) pValue);
}
else if (pClass == Double.class || pClass == Double.TYPE) {
return PrimitiveObjects.getDouble ((double) pValue);
}
else {
return PrimitiveObjects.getInteger (0);
}
}
//-------------------------------------
/**
*
* Coerces a double to the given primitive number class
**/
static Number coerceToPrimitiveNumber (double pValue,
Class pClass)
throws ELException
{
if (pClass == Byte.class || pClass == Byte.TYPE) {
return PrimitiveObjects.getByte ((byte) pValue);
}
else if (pClass == Short.class || pClass == Short.TYPE) {
return PrimitiveObjects.getShort ((short) pValue);
}
else if (pClass == Integer.class || pClass == Integer.TYPE) {
return PrimitiveObjects.getInteger ((int) pValue);
}
else if (pClass == Long.class || pClass == Long.TYPE) {
return PrimitiveObjects.getLong ((long) pValue);
}
else if (pClass == Float.class || pClass == Float.TYPE) {
return PrimitiveObjects.getFloat ((float) pValue);
}
else if (pClass == Double.class || pClass == Double.TYPE) {
return PrimitiveObjects.getDouble ((double) pValue);
}
else {
return PrimitiveObjects.getInteger (0);
}
}
//-------------------------------------
/**
*
* Coerces a Number to the given primitive number class
**/
static Number coerceToPrimitiveNumber (Number pValue,
Class pClass)
throws ELException
{
if (pClass == Byte.class || pClass == Byte.TYPE) {
return PrimitiveObjects.getByte (pValue.byteValue ());
}
else if (pClass == Short.class || pClass == Short.TYPE) {
return PrimitiveObjects.getShort (pValue.shortValue ());
}
else if (pClass == Integer.class || pClass == Integer.TYPE) {
return PrimitiveObjects.getInteger (pValue.intValue ());
}
else if (pClass == Long.class || pClass == Long.TYPE) {
return PrimitiveObjects.getLong (pValue.longValue ());
}
else if (pClass == Float.class || pClass == Float.TYPE) {
return PrimitiveObjects.getFloat (pValue.floatValue ());
}
else if (pClass == Double.class || pClass == Double.TYPE) {
return PrimitiveObjects.getDouble (pValue.doubleValue ());
}
else {
return PrimitiveObjects.getInteger (0);
}
}
//-------------------------------------
/**
*
* Coerces a String to the given primitive number class
**/
static Number coerceToPrimitiveNumber (String pValue,
Class pClass)
throws ELException
{
if (pClass == Byte.class || pClass == Byte.TYPE) {
return Byte.valueOf (pValue);
}
else if (pClass == Short.class || pClass == Short.TYPE) {
return Short.valueOf (pValue);
}
else if (pClass == Integer.class || pClass == Integer.TYPE) {
return Integer.valueOf (pValue);
}
else if (pClass == Long.class || pClass == Long.TYPE) {
return Long.valueOf (pValue);
}
else if (pClass == Float.class || pClass == Float.TYPE) {
return Float.valueOf (pValue);
}
else if (pClass == Double.class || pClass == Double.TYPE) {
return Double.valueOf (pValue);
}
else {
return PrimitiveObjects.getInteger (0);
}
}
//-------------------------------------
/**
*
* Coerces a value to a Character
**/
public static Character coerceToCharacter (Object pValue,
Logger pLogger)
throws ELException
{
if (pValue == null ||
"".equals (pValue)) {
return PrimitiveObjects.getCharacter ((char) 0);
}
else if (pValue instanceof Character) {
return (Character) pValue;
}
else if (pValue instanceof Boolean) {
if (pLogger.isLoggingError ()) {
pLogger.logError (Constants.BOOLEAN_TO_CHARACTER, pValue);
}
return PrimitiveObjects.getCharacter ((char) 0);
}
else if (pValue instanceof Number) {
return PrimitiveObjects.getCharacter
((char) ((Number) pValue).shortValue ());
}
else if (pValue instanceof String) {
String str = (String) pValue;
return PrimitiveObjects.getCharacter (str.charAt (0));
}
else {
if (pLogger.isLoggingError ()) {
pLogger.logError
(Constants.COERCE_TO_CHARACTER,
pValue.getClass ().getName ());
}
return PrimitiveObjects.getCharacter ((char) 0);
}
}
//-------------------------------------
/**
*
* Coerces a value to a Boolean
**/
public static Boolean coerceToBoolean (Object pValue,
Logger pLogger)
throws ELException
{
if (pValue == null ||
"".equals (pValue)) {
return Boolean.FALSE;
}
else if (pValue instanceof Boolean) {
return (Boolean) pValue;
}
else if (pValue instanceof String) {
String str = (String) pValue;
try {
return Boolean.valueOf (str);
}
catch (Exception exc) {
if (pLogger.isLoggingError ()) {
pLogger.logError
(Constants.STRING_TO_BOOLEAN,
exc,
(String) pValue);
}
return Boolean.FALSE;
}
}
else {
if (pLogger.isLoggingError ()) {
pLogger.logError
(Constants.COERCE_TO_BOOLEAN,
pValue.getClass ().getName ());
}
return Boolean.TRUE;
}
}
//-------------------------------------
/**
*
* Coerces a value to the specified Class that is not covered by any
* of the above cases
**/
public static Object coerceToObject (Object pValue,
Class pClass,
Logger pLogger)
throws ELException
{
if (pValue == null) {
return null;
}
else if (pClass.isAssignableFrom (pValue.getClass ())) {
return pValue;
}
else if (pValue instanceof String) {
String str = (String) pValue;
PropertyEditor pe = PropertyEditorManager.findEditor (pClass);
if (pe == null) {
if ("".equals (str)) {
return null;
}
else {
if (pLogger.isLoggingError ()) {
pLogger.logError
(Constants.NO_PROPERTY_EDITOR,
str,
pClass.getName ());
}
return null;
}
}
try {
pe.setAsText (str);
return pe.getValue ();
}
catch (IllegalArgumentException exc) {
if ("".equals (str)) {
return null;
}
else {
if (pLogger.isLoggingError ()) {
pLogger.logError
(Constants.PROPERTY_EDITOR_ERROR,
exc,
pValue,
pClass.getName ());
}
return null;
}
}
}
else {
if (pLogger.isLoggingError ()) {
pLogger.logError
(Constants.COERCE_TO_OBJECT,
pValue.getClass ().getName (),
pClass.getName ());
}
return null;
}
}
//-------------------------------------
// Applying operators
//-------------------------------------
/**
*
* Performs all of the necessary type conversions, then calls on the
* appropriate operator.
**/
public static Object applyArithmeticOperator
(Object pLeft,
Object pRight,
ArithmeticOperator pOperator,
Logger pLogger)
throws ELException
{
if (pLeft == null &&
pRight == null) {
if (pLogger.isLoggingWarning ()) {
pLogger.logWarning
(Constants.ARITH_OP_NULL,
pOperator.getOperatorSymbol ());
}
return PrimitiveObjects.getInteger (0);
}
else if (isFloatingPointType (pLeft) ||
isFloatingPointType (pRight) ||
isFloatingPointString (pLeft) ||
isFloatingPointString (pRight)) {
double left =
coerceToPrimitiveNumber (pLeft, Double.class, pLogger).
doubleValue ();
double right =
coerceToPrimitiveNumber (pRight, Double.class, pLogger).
doubleValue ();
return
PrimitiveObjects.getDouble (pOperator.apply (left, right, pLogger));
}
else {
long left =
coerceToPrimitiveNumber (pLeft, Long.class, pLogger).
longValue ();
long right =
coerceToPrimitiveNumber (pRight, Long.class, pLogger).
longValue ();
return
PrimitiveObjects.getLong (pOperator.apply (left, right, pLogger));
}
}
//-------------------------------------
/**
*
* Performs all of the necessary type conversions, then calls on the
* appropriate operator.
**/
public static Object applyRelationalOperator
(Object pLeft,
Object pRight,
RelationalOperator pOperator,
Logger pLogger)
throws ELException
{
if (isFloatingPointType (pLeft) ||
isFloatingPointType (pRight)) {
double left =
coerceToPrimitiveNumber (pLeft, Double.class, pLogger).
doubleValue ();
double right =
coerceToPrimitiveNumber (pRight, Double.class, pLogger).
doubleValue ();
return
PrimitiveObjects.getBoolean (pOperator.apply (left, right, pLogger));
}
else if (isIntegerType (pLeft) ||
isIntegerType (pRight)) {
long left =
coerceToPrimitiveNumber (pLeft, Long.class, pLogger).
longValue ();
long right =
coerceToPrimitiveNumber (pRight, Long.class, pLogger).
longValue ();
return
PrimitiveObjects.getBoolean (pOperator.apply (left, right, pLogger));
}
else if (pLeft instanceof String ||
pRight instanceof String) {
String left = coerceToString (pLeft, pLogger);
String right = coerceToString (pRight, pLogger);
return
PrimitiveObjects.getBoolean (pOperator.apply (left, right, pLogger));
}
else if (pLeft instanceof Comparable) {
try {
int result = ((Comparable) pLeft).compareTo (pRight);
return
PrimitiveObjects.getBoolean
(pOperator.apply (result, -result, pLogger));
}
catch (Exception exc) {
if (pLogger.isLoggingError ()) {
pLogger.logError
(Constants.COMPARABLE_ERROR,
exc,
pLeft.getClass ().getName (),
(pRight == null) ? "null" : pRight.getClass ().getName (),
pOperator.getOperatorSymbol ());
}
return Boolean.FALSE;
}
}
else if (pRight instanceof Comparable) {
try {
int result = ((Comparable) pRight).compareTo (pLeft);
return
PrimitiveObjects.getBoolean
(pOperator.apply (-result, result, pLogger));
}
catch (Exception exc) {
if (pLogger.isLoggingError ()) {
pLogger.logError
(Constants.COMPARABLE_ERROR,
exc,
pRight.getClass ().getName (),
(pLeft == null) ? "null" : pLeft.getClass ().getName (),
pOperator.getOperatorSymbol ());
}
return Boolean.FALSE;
}
}
else {
if (pLogger.isLoggingError ()) {
pLogger.logError
(Constants.ARITH_OP_BAD_TYPE,
pOperator.getOperatorSymbol (),
pLeft.getClass ().getName (),
pRight.getClass ().getName ());
}
return Boolean.FALSE;
}
}
//-------------------------------------
/**
*
* Performs all of the necessary type conversions, then calls on the
* appropriate operator.
**/
public static Object applyEqualityOperator
(Object pLeft,
Object pRight,
EqualityOperator pOperator,
Logger pLogger)
throws ELException
{
if (pLeft == pRight) {
return PrimitiveObjects.getBoolean (pOperator.apply (true, pLogger));
}
else if (pLeft == null ||
pRight == null) {
return PrimitiveObjects.getBoolean (pOperator.apply (false, pLogger));
}
else if (isFloatingPointType (pLeft) ||
isFloatingPointType (pRight)) {
double left =
coerceToPrimitiveNumber (pLeft, Double.class, pLogger).
doubleValue ();
double right =
coerceToPrimitiveNumber (pRight, Double.class, pLogger).
doubleValue ();
return
PrimitiveObjects.getBoolean
(pOperator.apply (left == right, pLogger));
}
else if (isIntegerType (pLeft) ||
isIntegerType (pRight)) {
long left =
coerceToPrimitiveNumber (pLeft, Long.class, pLogger).
longValue ();
long right =
coerceToPrimitiveNumber (pRight, Long.class, pLogger).
longValue ();
return
PrimitiveObjects.getBoolean
(pOperator.apply (left == right, pLogger));
}
else if (pLeft instanceof Boolean ||
pRight instanceof Boolean) {
boolean left = coerceToBoolean (pLeft, pLogger).booleanValue ();
boolean right = coerceToBoolean (pRight, pLogger).booleanValue ();
return
PrimitiveObjects.getBoolean
(pOperator.apply (left == right, pLogger));
}
else if (pLeft instanceof String ||
pRight instanceof String) {
String left = coerceToString (pLeft, pLogger);
String right = coerceToString (pRight, pLogger);
return
PrimitiveObjects.getBoolean
(pOperator.apply (left.equals (right), pLogger));
}
else {
try {
return
PrimitiveObjects.getBoolean
(pOperator.apply (pLeft.equals (pRight), pLogger));
}
catch (Exception exc) {
if (pLogger.isLoggingError ()) {
pLogger.logError
(Constants.ERROR_IN_EQUALS,
exc,
pLeft.getClass ().getName (),
pRight.getClass ().getName (),
pOperator.getOperatorSymbol ());
}
return Boolean.FALSE;
}
}
}
//-------------------------------------
/**
*
* Returns true if the given Object is of a floating point type
**/
public static boolean isFloatingPointType (Object pObject)
{
return
pObject != null &&
isFloatingPointType (pObject.getClass ());
}
//-------------------------------------
/**
*
* Returns true if the given class is of a floating point type
**/
public static boolean isFloatingPointType (Class pClass)
{
return
pClass == Float.class ||
pClass == Float.TYPE ||
pClass == Double.class ||
pClass == Double.TYPE;
}
//-------------------------------------
/**
*
* Returns true if the given string might contain a floating point
* number - i.e., it contains ".", "e", or "E"
**/
public static boolean isFloatingPointString (Object pObject)
{
if (pObject instanceof String) {
String str = (String) pObject;
int len = str.length ();
for (int i = 0; i < len; i++) {
char ch = str.charAt (i);
if (ch == '.' ||
ch == 'e' ||
ch == 'E') {
return true;
}
}
return false;
}
else {
return false;
}
}
//-------------------------------------
/**
*
* Returns true if the given Object is of an integer type
**/
public static boolean isIntegerType (Object pObject)
{
return
pObject != null &&
isIntegerType (pObject.getClass ());
}
//-------------------------------------
/**
*
* Returns true if the given class is of an integer type
**/
public static boolean isIntegerType (Class pClass)
{
return
pClass == Byte.class ||
pClass == Byte.TYPE ||
pClass == Short.class ||
pClass == Short.TYPE ||
pClass == Character.class ||
pClass == Character.TYPE ||
pClass == Integer.class ||
pClass == Integer.TYPE ||
pClass == Long.class ||
pClass == Long.TYPE;
}
//-------------------------------------
}
|
