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java.lang.Object javax.servlet.jsp.el.Expression
ValueExpression
public abstract class 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 | |
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Expression()
Deprecated. |
Method Summary | |
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abstract Object |
evaluate(VariableResolver vResolver)
Deprecated. Evaluates an expression that was previously prepared. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public Expression()
Method Detail |
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public abstract 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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Copyright 2007 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.