NullPredicate (Speedment - Runtime - Compute 3.2.10 API)

All Superinterfaces:

Predicate<T>

All Known Subinterfaces:

IsNotNull<T,R>, IsNull<T,R>
```
public interface NullPredicate<T,R>
extends Predicate<T>
```
Specialized predicate that holds additional metadata about the condition that can be used to optimize the expression.

Since:

3.1.2

Author:

Emil Forslund

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`ToNullable<T,R,?>`	`expression()`	The expression that is invoked in an incoming entity to get the value that the predicate should test.
`NullPredicateType`	`nullPredicateType()`	If this predicate represents a simple `a == null` or `a != null` predicate on the mapped value, then this method may choose to return a special value so that the predicate may be short-circuited.

Methods inherited from interface java.util.function.Predicate
and, negate, or, test

- Method Detail
  - nullPredicateType
```
NullPredicateType nullPredicateType()
```
    If this predicate represents a simple a == null or a != null predicate on the mapped value, then this method may choose to return a special value so that the predicate may be short-circuited. The method may always return NullPredicateType.OTHER, in which case no such optimization can be done.
    
    Returns:
    
    the type of predicate this represents
  - expression
```
ToNullable<T,R,?> expression()
```
    The expression that is invoked in an incoming entity to get the value that the predicate should test.
    
    Returns:
    
    the expression