org.apache.el.lang

Class ELArithmetic

java.lang.Object

org.apache.el.lang.ELArithmetic

Direct Known Subclasses:

ELArithmetic.BigDecimalDelegate, ELArithmetic.BigIntegerDelegate, ELArithmetic.DoubleDelegate, ELArithmetic.LongDelegate

public abstract class ELArithmetic
extends Object

A helper class of Arithmetic defined by the EL Specification

Author:

Jacob Hookom [jacob@hookom.net]

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ELArithmetic.BigDecimalDelegate
static class	ELArithmetic.BigIntegerDelegate
static class	ELArithmetic.DoubleDelegate
static class	ELArithmetic.LongDelegate

Field Summary

Fields

Modifier and Type	Field and Description
static ELArithmetic.BigDecimalDelegate	BIGDECIMAL
static ELArithmetic.BigIntegerDelegate	BIGINTEGER
static ELArithmetic.DoubleDelegate	DOUBLE
static ELArithmetic.LongDelegate	LONG

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ELArithmetic()

Method Summary

Modifier and Type	Method and Description
protected abstract Number	add(Number num0, Number num1)
static Number	add(Object obj0, Object obj1)
protected abstract Number	coerce(Number num)
protected Number	coerce(Object obj)
protected abstract Number	coerce(String str)
protected abstract Number	divide(Number num0, Number num1)
static Number	divide(Object obj0, Object obj1)
static boolean	isNumber(Object obj)
static boolean	isNumberType(Class<?> type)
protected abstract boolean	matches(Object obj0, Object obj1)
protected abstract Number	mod(Number num0, Number num1)
static Number	mod(Object obj0, Object obj1)
protected abstract Number	multiply(Number num0, Number num1)
static Number	multiply(Object obj0, Object obj1)
protected abstract Number	subtract(Number num0, Number num1)
static Number	subtract(Object obj0, Object obj1)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

BIGDECIMAL

public static final ELArithmetic.BigDecimalDelegate BIGDECIMAL

BIGINTEGER

public static final ELArithmetic.BigIntegerDelegate BIGINTEGER

DOUBLE

public static final ELArithmetic.DoubleDelegate DOUBLE

LONG

public static final ELArithmetic.LongDelegate LONG

Constructor Detail

ELArithmetic

protected ELArithmetic()

Method Detail

add

public static final Number add(Object obj0,
                               Object obj1)

mod

public static final Number mod(Object obj0,
                               Object obj1)

subtract

public static final Number subtract(Object obj0,
                                    Object obj1)

divide

public static final Number divide(Object obj0,
                                  Object obj1)

multiply

public static final Number multiply(Object obj0,
                                    Object obj1)

isNumber

public static final boolean isNumber(Object obj)

isNumberType

public static final boolean isNumberType(Class<?> type)

add

protected abstract Number add(Number num0,
                              Number num1)

multiply

protected abstract Number multiply(Number num0,
                                   Number num1)

subtract

protected abstract Number subtract(Number num0,
                                   Number num1)

mod

protected abstract Number mod(Number num0,
                              Number num1)

coerce

protected abstract Number coerce(Number num)

coerce

protected final Number coerce(Object obj)

coerce

protected abstract Number coerce(String str)

divide

protected abstract Number divide(Number num0,
                                 Number num1)

matches

protected abstract boolean matches(Object obj0,
                                   Object obj1)