BooleanExpression (Atlas :: Expression 2.4.0-M.4 API)

All Superinterfaces:

Expression

All Known Implementing Classes:

ComparisonExpression, LogicExpression
```
public interface BooleanExpression
extends Expression
```
A BooleanExpression is an expression that always produces a Boolean result.

Field Summary
- Fields inherited from interface io.atlasmap.expression.Expression
  CACHE

Method Summary

All Methods Static Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`static BooleanExpression`	`asBooleanExpression(Expression value)`	Converts to the `BooleanExpression`.
`boolean`	`matches(ExpressionContext message)`

Methods inherited from interface io.atlasmap.expression.Expression
evaluate

- Method Detail
  - matches
```
boolean matches(ExpressionContext message)
         throws ExpressionException
```
    Parameters:
    
    message - expression context
    
    Returns:
    
    true if the expression evaluates to Boolean.TRUE.
    
    Throws:
    
    ExpressionException - exception
  - asBooleanExpression
```
static BooleanExpression asBooleanExpression(Expression value)
                                      throws io.atlasmap.expression.parser.ParseException
```
    Converts to the BooleanExpression.
    
    Parameters:
    
    value - expression
    
    Returns:
    
    converted expression
    
    Throws:
    
    io.atlasmap.expression.parser.ParseException - unexpected error