public final class IsNullPredicate extends Predicate
Constructor and Description |
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IsNullPredicate(Expression expression)
Construct a predicate that checks the given expression for being null.
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IsNullPredicate(Expression expression,
boolean evaluateTo)
Construct a predicate that checks the given expression for being null.
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Modifier and Type | Method and Description |
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void |
accept(Visitor visitor)
Accept method to handle incoming visitors.
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java.lang.String |
toString()
Method constructing query string.
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evaluateTo, expression, not
public IsNullPredicate(Expression expression)
expression
- Expression to check for null.public IsNullPredicate(Expression expression, boolean evaluateTo)
expression
- Expression to check for null.evaluateTo
- What is the expected result of the evaluation?public void accept(Visitor visitor)
visitor
- Visitor to be handled.public java.lang.String toString()
toString
in class java.lang.Object
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