GenericRepository (data-api 5.2.1 API)

Type Parameters:

T - the type of the domain entity

PK - the type of the primary key from the domain entity

All Superinterfaces:

Serializable

All Known Implementing Classes:

AbstractRepository
```
public interface GenericRepository<T extends BaseEntity<PK>,PK extends Serializable>
extends Serializable
```
The interface GenericRepository provide an API for database operations like insert, delete, update and selections.

Author:

Asterios Raptis

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`void`	`create(T entity)` Persists the given entity.
`javax.persistence.TypedQuery<T>`	`createNamedQuery(String name, Class<T> resultClass)` Factory method for create a new `TypedQuery` from the given name and the given type.
`javax.persistence.TypedQuery<T>`	`createNamedTypedQuery(String name)` Factory method for create a new `TypedQuery` from the given name and the type of the generic entity.
`void`	`delete(List<T> entities)` Delete all persistent entities in the given list.
`void`	`delete(PK id)` Deletes an entity of a given Id.
`void`	`delete(T entity)` Deletes the given entity from persistent storage in the database.
`void`	`evict(T entity)` Remove this instance from the session cache.
`boolean`	`exists(PK id)` Checks if an entry exists with the given id.
`List<T>`	`findAll()` Returns a list of all persistent entities.
`T`	`get(PK id)` Retrieve a persisted entity with a given id from the database.
`javax.persistence.EntityManager`	`getEntityManager()` Gets the entity manager.
`javax.persistence.Query`	`getQuery(String hqlQuery)` Gets a `Query` from the given hql query.
`Class<T>`	`getType()` Gets the class type.
`T`	`load(PK id)` Retrieve a persisted entity with a given id from the database.
`List<T>`	`merge(List<T> entities)` Merges all new entities in the given list.
`T`	`merge(T entity)` Merges the given entity.
`void`	`refresh(T entity)` Re-read the state of the given instance from the underlying database.
`List<PK>`	`save(List<T> entities)` Save all new entities in the given list.
`PK`	`save(T entity)` Persist the given entity into database.
`void`	`saveOrUpdate(List<T> entities)` Save or update all transient entities in the given list.
`void`	`saveOrUpdate(T entity)` Save or update the given persistent entity.
`void`	`setEntityManager(javax.persistence.EntityManager entityManager)` Sets the entity manager.
`void`	`update(List<T> entities)` Update all transient entities in the given list.
`void`	`update(T entity)` Update changes made to the given entity.

- Method Detail
  - create
```
void create(T entity)
```
    Persists the given entity.
    
    Parameters:
    
    entity - the entity
  - createNamedQuery
```
javax.persistence.TypedQuery<T> createNamedQuery(String name,
                                                 Class<T> resultClass)
```
    Factory method for create a new TypedQuery from the given name and the given type.
    
    Parameters:
    
    name - the name
    
    resultClass - the result class
    
    Returns:
    
    the new TypedQuery
  - createNamedTypedQuery
```
javax.persistence.TypedQuery<T> createNamedTypedQuery(String name)
```
    Factory method for create a new TypedQuery from the given name and the type of the generic entity.
    
    Parameters:
    
    name - the name
    
    Returns:
    
    the new TypedQuery
  - delete
```
void delete(List<T> entities)
```
    Delete all persistent entities in the given list.
    
    Parameters:
    
    entities - the list with the persistent entities to delete
  - delete
```
void delete(PK id)
```
    Deletes an entity of a given Id. Will load the entity internally so consider using delete (T obj) directly
    
    Parameters:
    
    id - the id
  - delete
```
void delete(T entity)
```
    Deletes the given entity from persistent storage in the database.
    
    Parameters:
    
    entity - the persistent entity
  - evict
```
void evict(T entity)
```
    Remove this instance from the session cache.
    
    Parameters:
    
    entity - the entity to evict.
  - exists
```
boolean exists(PK id)
```
    Checks if an entry exists with the given id.
    
    Parameters:
    
    id - the id to check
    
    Returns:
    
    true, if an entry exists with the given id, otherwise false.
  - findAll
```
List<T> findAll()
```
    Returns a list of all persistent entities.
    
    Returns:
    
    list of all persistent entities
  - get
```
T get(PK id)
```
    Retrieve a persisted entity with a given id from the database.
    
    Parameters:
    
    id - the id
    
    Returns:
    
    An entity of type T
  - getEntityManager
```
javax.persistence.EntityManager getEntityManager()
```
    Gets the entity manager.
    
    Returns:
    
    the entity manager
  - getQuery
```
javax.persistence.Query getQuery(String hqlQuery)
```
    Gets a Query from the given hql query.
    
    Parameters:
    
    hqlQuery - the hql query
    
    Returns:
    
    the Query
  - getType
```
Class<T> getType()
```
    Gets the class type.
    
    Returns:
    
    the class type
  - load
```
T load(PK id)
```
    Retrieve a persisted entity with a given id from the database.
    
    Parameters:
    
    id - the id
    
    Returns:
    
    An entity of type T
  - merge
```
List<T> merge(List<T> entities)
```
    Merges all new entities in the given list.
    
    Parameters:
    
    entities - the list to save
    
    Returns:
    
    the list with the ids of the merged entities
  - merge
```
T merge(T entity)
```
    Merges the given entity. @see Hibernate documentation.
    
    Parameters:
    
    entity - the entity
    
    Returns:
    
    the entity
  - refresh
```
void refresh(T entity)
```
    Re-read the state of the given instance from the underlying database.
    
    Parameters:
    
    entity - the entity to re-read.
  - save
```
List<PK> save(List<T> entities)
```
    Save all new entities in the given list.
    
    Parameters:
    
    entities - the list to save
    
    Returns:
    
    the list with the ids of the saved entities
  - save
```
PK save(T entity)
```
    Persist the given entity into database.
    
    Parameters:
    
    entity - the new instance to save.
    
    Returns:
    
    the id of the saved entity
  - saveOrUpdate
```
void saveOrUpdate(List<T> entities)
```
    Save or update all transient entities in the given list.
    
    Parameters:
    
    entities - the transient entities
  - saveOrUpdate
```
void saveOrUpdate(T entity)
```
    Save or update the given persistent entity.
    
    Parameters:
    
    entity - the transient entity to save or update.
  - setEntityManager
```
void setEntityManager(javax.persistence.EntityManager entityManager)
```
    Sets the entity manager.
    
    Parameters:
    
    entityManager - the new entity manager
  - update
```
void update(List<T> entities)
```
    Update all transient entities in the given list.
    
    Parameters:
    
    entities - the transient entities to update.
  - update
```
void update(T entity)
```
    Update changes made to the given entity.
    
    Parameters:
    
    entity - the transient entity to update.

Interface GenericRepository<T extends BaseEntity<PK>,PK extends Serializable>

Method Summary

Method Detail

create

createNamedQuery

createNamedTypedQuery

delete

delete

delete

evict

exists

findAll

get

getEntityManager

getQuery

getType

load

merge

merge

refresh

save

save

saveOrUpdate

saveOrUpdate

setEntityManager

update

update