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org.apache.el.lang
Class ELSupport

java.lang.Object
  extended by org.apache.el.lang.ELSupport
Direct Known Subclasses:
SimpleNode
public class ELSupport
extends java.lang.Object

A helper class that implements the EL Specification

Author:
Jacob Hookom [[email protected]]

Constructor Summary
ELSupport()
           
 
Method Summary
static void checkType(java.lang.Object obj, java.lang.Class type)
           
static java.lang.Boolean coerceToBoolean(java.lang.Object obj)
          Convert an object to Boolean.
static java.lang.Character coerceToCharacter(java.lang.Object obj)
           
static java.lang.Enum<?> coerceToEnum(java.lang.Object obj, java.lang.Class type)
           
protected static java.lang.Number coerceToNumber(java.lang.Number number, java.lang.Class<?> type)
           
static java.lang.Number coerceToNumber(java.lang.Object obj)
           
static java.lang.Number coerceToNumber(java.lang.Object obj, java.lang.Class<?> type)
           
protected static java.lang.Number coerceToNumber(java.lang.String val, java.lang.Class<?> type)
           
static java.lang.String coerceToString(java.lang.Object obj)
           
static java.lang.Object coerceToType(java.lang.Object obj, java.lang.Class<?> type)
           
static int compare(java.lang.Object obj0, java.lang.Object obj1)
           
static boolean containsNulls(java.lang.Object[] obj)
           
static boolean equals(java.lang.Object obj0, java.lang.Object obj1)
           
static boolean isBigDecimalOp(java.lang.Object obj0, java.lang.Object obj1)
           
static boolean isBigIntegerOp(java.lang.Object obj0, java.lang.Object obj1)
           
static boolean isDoubleOp(java.lang.Object obj0, java.lang.Object obj1)
           
static boolean isDoubleStringOp(java.lang.Object obj0, java.lang.Object obj1)
           
static boolean isLongOp(java.lang.Object obj0, java.lang.Object obj1)
           
static boolean isStringFloat(java.lang.String str)
           
static void throwUnhandled(java.lang.Object base, java.lang.Object property)
           
static java.lang.Number toFloat(java.lang.String value)
           
static java.lang.Number toNumber(java.lang.String value)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ELSupport

public ELSupport()
Method Detail

throwUnhandled

public static final void throwUnhandled(java.lang.Object base,
                                        java.lang.Object property)
                                 throws javax.el.ELException
Throws:
javax.el.ELException

compare

public static final int compare(java.lang.Object obj0,
                                java.lang.Object obj1)
                         throws javax.el.ELException
Throws:
javax.el.ELException

equals

public static final boolean equals(java.lang.Object obj0,
                                   java.lang.Object obj1)
                            throws javax.el.ELException
Throws:
javax.el.ELException

coerceToEnum

public static final java.lang.Enum<?> coerceToEnum(java.lang.Object obj,
                                                   java.lang.Class type)

coerceToBoolean

public static final java.lang.Boolean coerceToBoolean(java.lang.Object obj)
                                               throws javax.el.ELException
Convert an object to Boolean. Null and empty string are false.

Parameters:
obj - the object to convert
Returns:
the Boolean value of the object
Throws:
javax.el.ELException - if object is not Boolean or String

coerceToCharacter

public static final java.lang.Character coerceToCharacter(java.lang.Object obj)
                                                   throws javax.el.ELException
Throws:
javax.el.ELException

coerceToNumber

public static final java.lang.Number coerceToNumber(java.lang.Object obj)

coerceToNumber

protected static final java.lang.Number coerceToNumber(java.lang.Number number,
                                                       java.lang.Class<?> type)
                                                throws javax.el.ELException
Throws:
javax.el.ELException

coerceToNumber

public static final java.lang.Number coerceToNumber(java.lang.Object obj,
                                                    java.lang.Class<?> type)
                                             throws javax.el.ELException
Throws:
javax.el.ELException

coerceToNumber

protected static final java.lang.Number coerceToNumber(java.lang.String val,
                                                       java.lang.Class<?> type)
                                                throws javax.el.ELException
Throws:
javax.el.ELException

coerceToString

public static final java.lang.String coerceToString(java.lang.Object obj)

checkType

public static final void checkType(java.lang.Object obj,
                                   java.lang.Class type)
                            throws javax.el.ELException
Throws:
javax.el.ELException

coerceToType

public static final java.lang.Object coerceToType(java.lang.Object obj,
                                                  java.lang.Class<?> type)
                                           throws javax.el.ELException
Throws:
javax.el.ELException

containsNulls

public static final boolean containsNulls(java.lang.Object[] obj)

isBigDecimalOp

public static final boolean isBigDecimalOp(java.lang.Object obj0,
                                           java.lang.Object obj1)

isBigIntegerOp

public static final boolean isBigIntegerOp(java.lang.Object obj0,
                                           java.lang.Object obj1)

isDoubleOp

public static final boolean isDoubleOp(java.lang.Object obj0,
                                       java.lang.Object obj1)

isDoubleStringOp

public static final boolean isDoubleStringOp(java.lang.Object obj0,
                                             java.lang.Object obj1)

isLongOp

public static final boolean isLongOp(java.lang.Object obj0,
                                     java.lang.Object obj1)

isStringFloat

public static final boolean isStringFloat(java.lang.String str)

toFloat

public static final java.lang.Number toFloat(java.lang.String value)

toNumber

public static final java.lang.Number toNumber(java.lang.String value)
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