Package org.apache.jasper.el
Class ExpressionEvaluatorImpl
java.lang.Object
jakarta.servlet.jsp.el.ExpressionEvaluator
org.apache.jasper.el.ExpressionEvaluatorImpl
Deprecated.
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Constructor SummaryConstructors
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Method SummaryModifier and TypeMethodDescriptionevaluate(String expression, Class expectedType, VariableResolver vResolver, FunctionMapper fMapper) Deprecated.Evaluates an expression.parseExpression(String expression, Class expectedType, FunctionMapper fMapper) Deprecated.Prepare an expression for later evaluation.
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Constructor Details- 
ExpressionEvaluatorImplDeprecated.
 
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Method Details- 
parseExpressionpublic Expression parseExpression(String expression, Class expectedType, FunctionMapper fMapper) throws ELException Deprecated.Description copied from class:jakarta.servlet.jsp.el.ExpressionEvaluatorPrepare an expression for later evaluation. This method should perform syntactic validation of the expression; if in doing so it detects errors, it should raise an ELParseException.- Specified by:
- parseExpressionin class- ExpressionEvaluator
- Parameters:
- expression- The expression to be evaluated.
- expectedType- The expected type of the result of the evaluation
- fMapper- A FunctionMapper to resolve functions found in the expression. It can be null, in which case no functions are supported for this invocation. The ExpressionEvaluator must not hold on to the FunctionMapper reference after returning from- parseExpression(). The- Expressionobject returned must invoke the same functions regardless of whether the mappings in the provided- FunctionMapperinstance change between calling- ExpressionEvaluator.parseExpression()and- Expression.evaluate().
- Returns:
- The Expression object encapsulating the arguments.
- Throws:
- ELException- Thrown if parsing errors were found.
 
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evaluatepublic Object evaluate(String expression, Class expectedType, VariableResolver vResolver, FunctionMapper fMapper) throws ELException Deprecated.Description copied from class:jakarta.servlet.jsp.el.ExpressionEvaluatorEvaluates an expression. This method may perform some syntactic validation and, if so, it should raise an ELParseException error if it encounters syntactic errors. EL evaluation errors should cause an ELException to be raised.- Specified by:
- evaluatein class- ExpressionEvaluator
- Parameters:
- expression- The expression to be evaluated.
- expectedType- The expected type of the result of the evaluation
- vResolver- A VariableResolver instance that can be used at runtime to resolve the name of implicit objects into Objects.
- fMapper- A FunctionMapper to resolve functions found in the expression. It can be null, in which case no functions are supported for this invocation.
- Returns:
- The result of the expression evaluation.
- Throws:
- ELException- Thrown if the expression evaluation failed.
 
 
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