ConstraintProvider (OptaPlanner distribution 7.70.0.Final API)

```
public interface ConstraintProvider
```
WARNING: The ConstraintStreams/ConstraintProvider API is TECH PREVIEW. It works but it has many API gaps. Therefore, it is not rich enough yet to handle complex constraints.
Used by constraint stream Score calculation.
An implementation must be stateless.

See Also:

ConstraintStreamScoreDirector

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Constraint[]`	`defineConstraints(ConstraintFactory constraintFactory)`	This method is called once to create the constraints.

- Method Detail
  - defineConstraints
```
Constraint[] defineConstraints(ConstraintFactory constraintFactory)
```
    This method is called once to create the constraints. To create a Constraint, start with ConstraintFactory.from(Class).
    
    Parameters:
    
    constraintFactory - never null
    
    Returns:
    
    an array of all constraints that could apply. The constraints with a zero ConstraintWeight for a particular problem will be automatically disabled when scoring that problem, to improve performance.