org.apache.taglibs.standard.lang.jstl

Class Expression

java.lang.Object

org.apache.taglibs.standard.lang.jstl.Expression

Direct Known Subclasses:

BinaryOperatorExpression, ComplexValue, FunctionInvocation, Literal, NamedValue, UnaryOperatorExpression

public abstract class Expression
extends Object

The abstract class from which all expression types derive.

Author:

Nathan Abramson - Art Technology Group, Shawn Bayern

Constructor Summary

Constructors

Constructor and Description
Expression()

Method Summary

Modifier and Type	Method and Description
abstract Object	evaluate(Object pContext, VariableResolver pResolver, Map functions, String defaultPrefix, Logger pLogger) Evaluates the expression in the given context
abstract 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 String getExpressionString()

Returns the expression in the expression language syntax

evaluate

public abstract Object evaluate(Object pContext,
                                VariableResolver pResolver,
                                Map functions,
                                String defaultPrefix,
                                Logger pLogger)
                         throws ELException

Evaluates the expression in the given context

Throws:

ELException