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public interface Negatable
This interface is implemented by expressions that returns a boolean value, and returns an expression whose result is the negated boolean value
| Method Summary | |
|---|---|
boolean |
isNegatable(ExpressionVisitor visitor)
Check whether this specific instance of the expression is negatable |
Expression |
negate()
Create an expression that returns the negation of this expression |
| Method Detail |
|---|
boolean isNegatable(ExpressionVisitor visitor)
Expression negate()
IllegalOperationException - if isNegatable() returns false
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