public class MVELFactory extends java.lang.Object implements ExpressionFactory
Available in ZK EE
Note: MVEL is not completely compatible with JSP EL.
See also MVEL website.
FEATURE_CLASS, FEATURE_FUNCTION
Constructor and Description |
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MVELFactory() |
Modifier and Type | Method and Description |
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java.lang.Object |
evaluate(XelContext ctx,
java.lang.String expression,
java.lang.Class expectedType)
Evaluates an expression.
|
boolean |
isSupported(int feature)
Returns whether an feature is supported.
|
Expression |
parseExpression(XelContext ctx,
java.lang.String expression,
java.lang.Class expectedType)
Prepares (a.k.a., compiles) an expression.
|
public boolean isSupported(int feature)
ExpressionFactory
isSupported
in interface ExpressionFactory
feature
- which feature to query.
It can be a combination of ExpressionFactory.FEATURE_FUNCTION
and ExpressionFactory.FEATURE_CLASS
.public Expression parseExpression(XelContext ctx, java.lang.String expression, java.lang.Class expectedType) throws XelException
ExpressionFactory
parseExpression
in interface ExpressionFactory
ctx
- the context information to prepare the expression.
It can be null, in which case no functions are supported for this
invocation.expression
- the expression to be evaluated.expectedType
- the expected type of the result of the evaluationXelException
public java.lang.Object evaluate(XelContext ctx, java.lang.String expression, java.lang.Class expectedType) throws XelException
ExpressionFactory
evaluate
in interface ExpressionFactory
ctx
- the context information to evaluate an expression.
It can be null, in which case no functions are supported for this
invocation.expression
- the expression to be evaluated.
Note: the expression is enclosed
with ${ and }, regardless of what implementation is used.expectedType
- the expected type of the result of the evaluationXelException
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