PredicateRepository (DigitalCollections: cudami Repository Server (Backend API) 6.2.0-RC1 API)

```
public interface PredicateRepository
```
Repository for predicates handling

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`long`	`count()`
`void`	`delete(String value)`
`List<de.digitalcollections.model.relation.Predicate>`	`getAll()`	Return all predicates
`de.digitalcollections.model.relation.Predicate`	`getByValue(String value)`	Returns a predicate, if available
`de.digitalcollections.model.relation.Predicate`	`save(de.digitalcollections.model.relation.Predicate predicate)`	Save a predicate.

- Method Detail
  - count
```
long count()
```
  - delete
```
void delete(String value)
```
  - getAll
```
List<de.digitalcollections.model.relation.Predicate> getAll()
```
    Return all predicates
    
    Returns:
    
    List of all predicates
  - getByValue
```
de.digitalcollections.model.relation.Predicate getByValue(String value)
```
    Returns a predicate, if available
    
    Parameters:
    
    value - unique value of predicate, e.g. "is_part_of"
    
    Returns:
    
    Predicate or null
  - save
```
de.digitalcollections.model.relation.Predicate save(de.digitalcollections.model.relation.Predicate predicate)
```
    Save a predicate. Since its field value is its primary key, there's no difference, whether a predicate is created or updated.
    
    Parameters:
    
    predicate - the predicate to be saved
    
    Returns:
    
    the saved predicate with update timestamps