JpaEntityManagerDao (data-api 3.32.0 API)

java.lang.Object
- de.alpharogroup.db.dao.jpa.JpaEntityManagerDao<T,PK>

Type Parameters:

T - the generic type of the entity object

PK - the generic type of the primary key

All Implemented Interfaces:

GenericDao<T,PK>, EntityManagerDao<T,PK>, Serializable
```
public abstract class JpaEntityManagerDao<T extends BaseEntity<PK>,PK extends Serializable>
extends Object
implements EntityManagerDao<T,PK>
```
The abstract class JpaEntityManagerDao provides methods for create, update and delete entity objects. The create, update and delete processes can be overwritten by providing strategies for them. By default the strategies are null and the default behavior of the process will be taken.

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor and Description

JpaEntityManagerDao()

Constructors
Constructor and Description
`JpaEntityManagerDao()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`create(T entity)` Persists the given entity.
`void`	`delete(List<T> objects)` Delete all persistent objects in the given list.
`void`	`delete(PK id)` Deletes an object of a given Id.
`void`	`delete(T entity)` Deletes the given object from persistent storage in the database.
`void`	`evict(T object)` 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 objects.
`T`	`get(PK id)` Retrieve a persisted object with a given id from the database.
`Query`	`getQuery(String hqlQuery)` Gets a `Query` from the given hql query.
`T`	`load(PK id)` Retrieve a persisted object with a given id from the database.
`List<T>`	`merge(List<T> objects)` Merges all new objects in the given list.
`T`	`merge(T object)` Merges the given object.
`DeleteStrategy<T,PK>`	`newDeleteStrategy()` Factory method for creating a new `DeleteStrategy` for interact on deletion process.
`MergeStrategy<T,PK>`	`newMergeStrategy()` Factory method for creating a new `MergeStrategy` for interact on merge process.
`SaveOrUpdateStrategy<T,PK>`	`newSaveOrUpdateStrategy()` Factory method for creating a new `SaveOrUpdateStrategy` for interact on save or update process.
`void`	`refresh(T object)` Re-read the state of the given instance from the underlying database.
`List<PK>`	`save(List<T> objects)` Save all new objects in the given list.
`PK`	`save(T object)` Persist the given object into database.
`void`	`saveOrUpdate(List<T> objects)` Save or update all transient objects in the given list.
`void`	`saveOrUpdate(T object)` Save or update the given persistent object.
`void`	`update(List<T> objects)` Update all transient objects in the given list.
`void`	`update(T entity)` Update changes made to the given object.

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

Methods inherited from interface de.alpharogroup.db.dao.jpa.EntityManagerDao
getEntityManager, setEntityManager

Methods inherited from interface de.alpharogroup.db.dao.api.GenericDao
getType

- Constructor Detail
  - JpaEntityManagerDao
```
public JpaEntityManagerDao()
```
- Method Detail
  - create
```
public void create(T entity)
```
    Persists the given entity.
    
    Specified by:
    
    create in interface EntityManagerDao<T extends BaseEntity<PK>,PK extends Serializable>
    
    Parameters:
    
    entity - the entity
  - delete
```
public void delete(List<T> objects)
```
    Delete all persistent objects in the given list.
    
    Specified by:
    
    delete in interface GenericDao<T extends BaseEntity<PK>,PK extends Serializable>
    
    Parameters:
    
    objects - the list with the persistent objects to delete
  - delete
```
public void delete(PK id)
```
    Deletes an object of a given Id. Will load the object internally so consider using delete (T obj) directly
    
    Specified by:
    
    delete in interface GenericDao<T extends BaseEntity<PK>,PK extends Serializable>
    
    Parameters:
    
    id - the id
  - delete
```
public void delete(T entity)
```
    Deletes the given object from persistent storage in the database.
    
    Specified by:
    
    delete in interface GenericDao<T extends BaseEntity<PK>,PK extends Serializable>
    
    Parameters:
    
    entity - the persistent object
  - evict
```
public void evict(T object)
```
    Remove this instance from the session cache.
    
    Specified by:
    
    evict in interface GenericDao<T extends BaseEntity<PK>,PK extends Serializable>
    
    Parameters:
    
    object - the object to evict.
  - exists
```
public boolean exists(PK id)
```
    Checks if an entry exists with the given id.
    
    Specified by:
    
    exists in interface GenericDao<T extends BaseEntity<PK>,PK extends Serializable>
    
    Parameters:
    
    id - the id to check
    
    Returns:
    
    true, if an entry exists with the given id, otherwise false.
  - findAll
```
public List<T> findAll()
```
    Returns a list of all persistent objects.
    
    Specified by:
    
    findAll in interface GenericDao<T extends BaseEntity<PK>,PK extends Serializable>
    
    Returns:
    
    list of all persistent objects
  - get
```
public T get(PK id)
```
    Retrieve a persisted object with a given id from the database.
    
    Specified by:
    
    get in interface GenericDao<T extends BaseEntity<PK>,PK extends Serializable>
    
    Parameters:
    
    id - the id
    
    Returns:
    
    An object of type T
  - getQuery
```
public Query getQuery(String hqlQuery)
```
    Gets a Query from the given hql query.
    
    Specified by:
    
    getQuery in interface EntityManagerDao<T extends BaseEntity<PK>,PK extends Serializable>
    
    Parameters:
    
    hqlQuery - the hql query
    
    Returns:
    
    the Query
  - load
```
public T load(PK id)
```
    Retrieve a persisted object with a given id from the database.
    
    Specified by:
    
    load in interface GenericDao<T extends BaseEntity<PK>,PK extends Serializable>
    
    Parameters:
    
    id - the id
    
    Returns:
    
    An object of type T
  - merge
```
public List<T> merge(List<T> objects)
```
    Merges all new objects in the given list.
    
    Specified by:
    
    merge in interface GenericDao<T extends BaseEntity<PK>,PK extends Serializable>
    
    Parameters:
    
    objects - the list to save
    
    Returns:
    
    the list with the ids of the merged objects
  - merge
```
public T merge(T object)
```
    Merges the given object. @see Hibernate documentation.
    
    Specified by:
    
    merge in interface GenericDao<T extends BaseEntity<PK>,PK extends Serializable>
    
    Parameters:
    
    object - the object
    
    Returns:
    
    the object
  - newDeleteStrategy
```
public DeleteStrategy<T,PK> newDeleteStrategy()
```
    Factory method for creating a new DeleteStrategy for interact on deletion process. This method can be overridden so users can provide their own version of a new DeleteStrategy for the deletion process.
    
    Returns:
    
    the new DeleteStrategy for the deletion process.
  - newMergeStrategy
```
public MergeStrategy<T,PK> newMergeStrategy()
```
    Factory method for creating a new MergeStrategy for interact on merge process. This method can be overridden so users can provide their own version of a new MergeStrategy for the merge process.
    
    Returns:
    
    the new MergeStrategy for the merge process.
  - newSaveOrUpdateStrategy
```
public SaveOrUpdateStrategy<T,PK> newSaveOrUpdateStrategy()
```
    Factory method for creating a new SaveOrUpdateStrategy for interact on save or update process. This method can be overridden so users can provide their own version of a new SaveOrUpdateStrategy for the save or update process.
    
    Returns:
    
    the new SaveOrUpdateStrategy for the save or update process.
  - refresh
```
public void refresh(T object)
```
    Description copied from interface: GenericDao
    
    Re-read the state of the given instance from the underlying database.
    
    Specified by:
    
    refresh in interface GenericDao<T extends BaseEntity<PK>,PK extends Serializable>
    
    Parameters:
    
    object - the object to re-read.
  - save
```
public List<PK> save(List<T> objects)
```
    Save all new objects in the given list.
    
    Specified by:
    
    save in interface GenericDao<T extends BaseEntity<PK>,PK extends Serializable>
    
    Parameters:
    
    objects - the list to save
    
    Returns:
    
    the list with the ids of the saved objects
  - save
```
public PK save(T object)
```
    Persist the given object into database.
    
    Specified by:
    
    save in interface GenericDao<T extends BaseEntity<PK>,PK extends Serializable>
    
    Parameters:
    
    object - the new instance to save.
    
    Returns:
    
    the id of the saved object
  - saveOrUpdate
```
public void saveOrUpdate(List<T> objects)
```
    Save or update all transient objects in the given list.
    
    Specified by:
    
    saveOrUpdate in interface GenericDao<T extends BaseEntity<PK>,PK extends Serializable>
    
    Parameters:
    
    objects - the transient objects
  - saveOrUpdate
```
public void saveOrUpdate(T object)
```
    Save or update the given persistent object.
    
    Specified by:
    
    saveOrUpdate in interface GenericDao<T extends BaseEntity<PK>,PK extends Serializable>
    
    Parameters:
    
    object - the transient object to save or update.
  - update
```
public void update(List<T> objects)
```
    Update all transient objects in the given list.
    
    Specified by:
    
    update in interface GenericDao<T extends BaseEntity<PK>,PK extends Serializable>
    
    Parameters:
    
    objects - the transient objects to update.
  - update
```
public void update(T entity)
```
    Update changes made to the given object.
    
    Specified by:
    
    update in interface GenericDao<T extends BaseEntity<PK>,PK extends Serializable>
    
    Parameters:
    
    entity - the transient object to update.

Class JpaEntityManagerDao<T extends BaseEntity<PK>,PK extends Serializable>

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface de.alpharogroup.db.dao.jpa.EntityManagerDao

Methods inherited from interface de.alpharogroup.db.dao.api.GenericDao

Constructor Detail

JpaEntityManagerDao

Method Detail

create

delete

delete

delete

evict

exists

findAll

get

getQuery

load

merge

merge

newDeleteStrategy

newMergeStrategy

newSaveOrUpdateStrategy

refresh

save

save

saveOrUpdate

saveOrUpdate

update

update