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public interface JexlExpression
Represents a single JEXL expression.
This simple interface provides access to the underlying textual expression through
getSourceText()
.
An expression is different than a script - it is simply a reference to a single expression, not to multiple statements. This implies 'if','for','while','var' and blocks '{'... '}'are not allowed in expressions.
Do not create classes that implement this interface; delegate or compose instead.
Method Summary | |
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Callable<Object> |
callable(JexlContext context)
Creates a Callable from this expression. |
Object |
evaluate(JexlContext context)
Evaluates the expression with the variables contained in the supplied JexlContext . |
String |
getParsedText()
Recreates the source text of this expression from the internal syntactic tree. |
String |
getSourceText()
Returns the source text of this expression. |
Method Detail |
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Object evaluate(JexlContext context)
JexlContext
.
context
- A JexlContext containing variables.
JexlException
- on any errorString getSourceText()
String getParsedText()
Callable<Object> callable(JexlContext context)
This allows to submit it to an executor pool and provides support for asynchronous calls.
The interpreter will handle interruption/cancellation gracefully if needed.
context
- the context
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