org.apache.commons.jexl.util
Class Coercion

java.lang.Object
  org.apache.commons.jexl.util.Coercion

public class Coercion
extends java.lang.Object

Coercion utilities for the JSTL EL-like coercion.

Since:

1.0

Author:

Geir Magnusson Jr.

Constructor Summary

Coercion()

Method Summary

static java.lang.Boolean	coerceBoolean(java.lang.Object val) Coerce to a Boolean.
static java.lang.Double	coerceDouble(java.lang.Object val) Coerce to a Double.
static java.lang.Integer	coerceInteger(java.lang.Object val) Coerce to a Integer.
static java.lang.Long	coerceLong(java.lang.Object val) Coerce to a Long.
static boolean	isFloatingPoint(java.lang.Object o) Is Object a floating point number.
static boolean	isNumberable(java.lang.Object o) Is Object a whole number.

Methods inherited from class java.lang.Object

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

Constructor Detail

Coercion

public Coercion()

Method Detail

coerceBoolean

public static java.lang.Boolean coerceBoolean(java.lang.Object val)

Coerce to a Boolean.

Parameters:

val - Object to be coerced.

Returns:

The Boolean coerced value, or null if none possible.

coerceInteger

public static java.lang.Integer coerceInteger(java.lang.Object val)
                                       throws java.lang.Exception

Coerce to a Integer.

Parameters:

val - Object to be coerced.

Returns:

The Integer coerced value.

Throws:

java.lang.Exception - If Integer coercion fails.

coerceLong

public static java.lang.Long coerceLong(java.lang.Object val)
                                 throws java.lang.Exception

Coerce to a Long.

Parameters:

val - Object to be coerced.

Returns:

The Long coerced value.

Throws:

java.lang.Exception - If Long coercion fails.

coerceDouble

public static java.lang.Double coerceDouble(java.lang.Object val)
                                     throws java.lang.Exception

Coerce to a Double.

Parameters:

val - Object to be coerced.

Returns:

The Double coerced value.

Throws:

java.lang.Exception - If Double coercion fails.

isFloatingPoint

public static boolean isFloatingPoint(java.lang.Object o)

Is Object a floating point number.

Parameters:

o - Object to be analyzed.

Returns:

true if it is a Float or a Double.

isNumberable

public static boolean isNumberable(java.lang.Object o)

Is Object a whole number.

Parameters:

o - Object to be analyzed.

Returns:

true if Integer, Long, Byte, Short or Character.