org.apache.commons.jexl2

Class UnifiedJEXL.ConstantExpression

java.lang.Object

org.apache.commons.jexl2.UnifiedJEXL.Expression

org.apache.commons.jexl2.UnifiedJEXL.ConstantExpression

Enclosing class:

UnifiedJEXL

private class UnifiedJEXL.ConstantExpression
extends UnifiedJEXL.Expression

A constant expression.

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.Object	value The constant held by this expression.

Fields inherited from class org.apache.commons.jexl2.UnifiedJEXL.Expression

source

Constructor Summary

Constructors

Constructor and Description
ConstantExpression(java.lang.Object val, UnifiedJEXL.Expression source) Creates a constant expression.

Method Summary

Modifier and Type	Method and Description
java.lang.StringBuilder	asString(java.lang.StringBuilder strb) Adds this expression's string representation to a StringBuilder.
protected java.lang.Object	evaluate(Interpreter interpreter) Intreprets a sub-expression.
(package private) UnifiedJEXL.ExpressionType	getType() Gets this expression type.

Methods inherited from class org.apache.commons.jexl2.UnifiedJEXL.Expression

asString, evaluate, getSource, getVariables, getVariables, isDeferred, isImmediate, prepare, prepare, toString

Methods inherited from class java.lang.Object

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

Field Detail

value

private final java.lang.Object value

The constant held by this expression.

Constructor Detail

ConstantExpression

ConstantExpression(java.lang.Object val,
                   UnifiedJEXL.Expression source)

Creates a constant expression.

If the wrapped constant is a string, it is treated as a JEXL strings with respect to escaping.

Parameters:

val - the constant value

source - the source expression if any

Method Detail

getType

UnifiedJEXL.ExpressionType getType()

Gets this expression type.

Specified by:

getType in class UnifiedJEXL.Expression

Returns:

its type

asString

public java.lang.StringBuilder asString(java.lang.StringBuilder strb)

Adds this expression's string representation to a StringBuilder.

Specified by:

asString in class UnifiedJEXL.Expression

Parameters:

strb - the builder to fill

Returns:

the builder argument

evaluate

protected java.lang.Object evaluate(Interpreter interpreter)

Intreprets a sub-expression.

Specified by:

evaluate in class UnifiedJEXL.Expression

Parameters:

interpreter - a JEXL interpreter

Returns:

the result of interpretation