public abstract class Expression
extends java.lang.Object
The abstract class for a prepared expression.
An instance of an Expression can be obtained via from an ExpressionEvaluator instance.
An Expression may or not have done a syntactic parse of the expression. A client invoking the evaluate() method should be ready for the case where ELParseException exceptions are raised.
| Constructor and Description | 
|---|
| Expression()Deprecated.  | 
| Modifier and Type | Method and Description | 
|---|---|
| abstract java.lang.Object | evaluate(VariableResolver vResolver)Deprecated.  Evaluates an expression that was previously prepared. | 
public abstract java.lang.Object evaluate(VariableResolver vResolver) throws ELException
vResolver - A VariableResolver instance that can be used at
   runtime to resolve the name of implicit objects into Objects.ELException - Thrown if the expression evaluation failed.Copyright © 2000-2020 Apache Software Foundation. All Rights Reserved.