JexlExpression

All Known Implementing Classes:

Closure, Script
```
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.

Since:

1.0

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.util.concurrent.Callable<java.lang.Object>`	`callable(JexlContext context)`	Creates a Callable from this expression.
`java.lang.Object`	`evaluate(JexlContext context)`	Evaluates the expression with the variables contained in the supplied `JexlContext`.
`java.lang.String`	`getParsedText()`	Recreates the source text of this expression from the internal syntactic tree.
`java.lang.String`	`getSourceText()`	Returns the source text of this expression.

- Method Detail
  - callable
```
java.util.concurrent.Callable<java.lang.Object> callable(JexlContext context)
```
    Creates a Callable from this expression.
    This allows to submit it to an executor pool and provides support for asynchronous calls.
    
    The interpreter will handle interruption/cancellation gracefully if needed.
    
    Parameters:
    
    context - the context
    
    Returns:
    
    the callable
    
    Since:
    
    3.1
  - evaluate
```
java.lang.Object evaluate(JexlContext context)
```
    Evaluates the expression with the variables contained in the supplied JexlContext.
    
    Parameters:
    
    context - A JexlContext containing variables.
    
    Returns:
    
    The result of this evaluation
    
    Throws:
    
    JexlException - on any error
  - getParsedText
```
java.lang.String getParsedText()
```
    Recreates the source text of this expression from the internal syntactic tree.
    
    Returns:
    
    the source text
  - getSourceText
```
java.lang.String getSourceText()
```
    Returns the source text of this expression.
    
    Returns:
    
    the source text