ValueExpression
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 | Description |
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Expression() |
Deprecated.
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Modifier and Type | Method | Description |
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abstract java.lang.Object |
evaluate(VariableResolver vResolver) |
Deprecated.
Evaluates an expression that was previously prepared.
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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.