de.alpharogroup.db.service.jpa

Class AbstractBusinessService<T extends BaseEntity<PK>,PK extends Serializable,DAO extends EntityManagerDao<T,PK>>

java.lang.Object

de.alpharogroup.db.service.jpa.AbstractBusinessService<T,PK,DAO>

Type Parameters:

T - the type of the domain object

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

DAO - the type of the data access object.

All Implemented Interfaces:

BusinessService<T,PK>, Serializable

public abstract class AbstractBusinessService<T extends BaseEntity<PK>,PK extends Serializable,DAO extends EntityManagerDao<T,PK>>
extends Object
implements BusinessService<T,PK>

The Class AbstractBusinessService.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AbstractBusinessService()

Method Summary

Modifier and Type	Method and Description
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 id) 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 objects.
T	get(PK id) Retrieve a persisted object with a given id from the database.
DAO	getDao() Gets the dao reference.
Query	getQuery(String s) Gets the 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.
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 newInstance) Persist the given object into database.
void	saveOrUpdate(List<T> objects) Save or update all given objects into database.
void	saveOrUpdate(T object) Save or update the given object into database.
void	setDao(DAO dao) Sets the dao reference.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractBusinessService

public AbstractBusinessService()

Method Detail

delete

@Transactional
public void delete(List<T> objects)

Delete all persistent objects in the given list.

Specified by:

delete in interface BusinessService<T extends BaseEntity<PK>,PK extends Serializable>

Parameters:

objects - the list with the persistent objects to delete

delete

@Transactional
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 BusinessService<T extends BaseEntity<PK>,PK extends Serializable>

Parameters:

id - the id

delete

@Transactional
public void delete(T id)

Deletes the given object from persistent storage in the database.

Specified by:

delete in interface BusinessService<T extends BaseEntity<PK>,PK extends Serializable>

Parameters:

id - the persistent object

evict

public void evict(T object)

Remove this instance from the session cache.

Specified by:

evict in interface BusinessService<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 BusinessService<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 objects.

Specified by:

findAll in interface BusinessService<T extends BaseEntity<PK>,PK extends Serializable>

Returns:

list of objects

get

public T get(PK id)

Retrieve a persisted object with a given id from the database.

Specified by:

get in interface BusinessService<T extends BaseEntity<PK>,PK extends Serializable>

Parameters:

id - the id

Returns:

An object of type T

getDao

public DAO getDao()

Gets the dao reference.

Returns:

the dao reference.

getQuery

public Query getQuery(String s)

Gets the query.

Parameters:

s - the s

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 BusinessService<T extends BaseEntity<PK>,PK extends Serializable>

Parameters:

id - the id

Returns:

An object of type T

merge

@Transactional
public T merge(T object)

Merges the given object. @see Hibernate documentation.

Specified by:

merge in interface BusinessService<T extends BaseEntity<PK>,PK extends Serializable>

Parameters:

object - the object

Returns:

the object

refresh

@Transactional
public void refresh(T object)

Re-read the state of the given instance from the underlying database.

Specified by:

refresh in interface BusinessService<T extends BaseEntity<PK>,PK extends Serializable>

Parameters:

object - the object to refresh.

save

@Transactional
public List<PK> save(List<T> objects)

Save all new objects in the given list.

Specified by:

save in interface BusinessService<T extends BaseEntity<PK>,PK extends Serializable>

Parameters:

objects - the list to save

Returns:

the list with the ids of the saved objects

merge

@Transactional
public List<T> merge(List<T> objects)

Merges all new objects in the given list.

Specified by:

merge in interface BusinessService<T extends BaseEntity<PK>,PK extends Serializable>

Parameters:

objects - the list to save

Returns:

the list with the ids of the merged objects

save

@Transactional
public PK save(T newInstance)

Persist the given object into database.

Specified by:

save in interface BusinessService<T extends BaseEntity<PK>,PK extends Serializable>

Parameters:

newInstance - the new instance to save.

Returns:

the id of the saved object

saveOrUpdate

@Transactional
public void saveOrUpdate(List<T> objects)

Save or update all given objects into database.

Specified by:

saveOrUpdate in interface BusinessService<T extends BaseEntity<PK>,PK extends Serializable>

Parameters:

objects - the objects to save or update.

saveOrUpdate

@Transactional
public void saveOrUpdate(T object)

Save or update the given object into database.

Specified by:

saveOrUpdate in interface BusinessService<T extends BaseEntity<PK>,PK extends Serializable>

Parameters:

object - the object to save or update.

setDao

public void setDao(DAO dao)

Sets the dao reference.

Parameters:

dao - the new dao dao reference.