Package org.apache.commons.el

Class Expression

java.lang.Object

org.apache.commons.el.Expression

Direct Known Subclasses:

BinaryOperatorExpression, ComplexValue, ConditionalExpression, FunctionInvocation, Literal, NamedValue, UnaryOperatorExpression

public abstract class Expression
extends java.lang.Object

The abstract class from which all expression types derive.

Version:

$Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: luehe $

Author:

Nathan Abramson - Art Technology Group, Shawn Bayern

Constructor Summary

Constructors

Constructor	Description
Expression()

Method Summary

Modifier and Type	Method	Description
abstract java.lang.Object	evaluate(javax.servlet.jsp.el.VariableResolver pResolver, javax.servlet.jsp.el.FunctionMapper functions, Logger pLogger)	Evaluates the expression in the given context
abstract java.lang.String	getExpressionString()	Returns the expression in the expression language syntax

Methods inherited from class java.lang.Object

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

Constructor Detail

Expression

public Expression()

Method Detail

getExpressionString

public abstract java.lang.String getExpressionString()

Returns the expression in the expression language syntax

evaluate

public abstract java.lang.Object evaluate(javax.servlet.jsp.el.VariableResolver pResolver,
                                          javax.servlet.jsp.el.FunctionMapper functions,
                                          Logger pLogger)
                                   throws javax.servlet.jsp.el.ELException

Evaluates the expression in the given context

Throws:

javax.servlet.jsp.el.ELException