NullConstraint (GTF 2.0.1 API)

java.lang.Object
- science.aist.gtf.verification.syntactic.constraint.impl.NullConstraint

All Implemented Interfaces:

BiFunction<Object,Field,ConstraintError>, Constraint<Object>
```
public class NullConstraint
extends Object
implements Constraint<Object>
```
Constraint which checks if an object is null

Since:

1.0

Author:

Christoph Praschl

Constructor Summary

Constructors
Constructor Description

NullConstraint()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`ConstraintError`	`apply(Object o, Field f)`
`Class<Object>`	`getType()`
`boolean`	`isBreakingConstraint()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.function.BiFunction
andThen

- Constructor Detail
  - NullConstraint
```
public NullConstraint()
```
- Method Detail
  - apply
```
public ConstraintError apply(Object o,
                             Field f)
```
    Specified by:
    
    apply in interface BiFunction<Object,Field,ConstraintError>
  - getType
```
public Class<Object> getType()
```
    Specified by:
    
    getType in interface Constraint<Object>
    
    Returns:
    
    method which returns the type for which the constraint is applied
  - isBreakingConstraint
```
public boolean isBreakingConstraint()
```
    Specified by:
    
    isBreakingConstraint in interface Constraint<Object>
    
    Returns:
    
    a flag if constraint is breaking and if violated no further constraints should be checked (e.q. because of a NullPointer)