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java.lang.Objectjavax.servlet.jsp.el.Expression
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 Summary | |
| Expression() | |
| Method Summary | |
| abstract  java.lang.Object | evaluate(VariableResolver vResolver)Evaluates an expression that was previously prepared. | 
| Methods inherited from class java.lang.Object | 
| clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait | 
| Constructor Detail | 
public Expression()
| Method Detail | 
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.| 
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