de.taimos.dvalin.jpa

Class EntityDAOHibernate<E extends IEntity<I>,I>

java.lang.Object

de.taimos.dvalin.jpa.EntityDAOHibernate<E,I>

Type Parameters:

E - the entity type

I - the id type

All Implemented Interfaces:

IEntityDAO<E,I>

public abstract class EntityDAOHibernate<E extends IEntity<I>,I>
extends Object
implements IEntityDAO<E,I>

Author:

hoegertn

Field Summary

Fields

Modifier and Type	Field and Description
protected javax.persistence.EntityManager	entityManager

Constructor Summary

Constructors

Constructor and Description
EntityDAOHibernate()

Method Summary

Modifier and Type	Method and Description
void	delete(E element)
void	deleteById(I id)
E	findById(I id)
protected E	findByQuery(String query, Object... params)
protected Object[]	findGenericByQuery(String query, Object... params)
protected List<Object[]>	findGenericListByQuery(String query, Object... params)
protected List<Object[]>	findGenericListByQueryLimit(String query, int first, int max, Object... params)
List<E>	findList()
List<E>	findList(int first, int max)
protected List<E>	findListByQuery(String query, Object... params)
protected List<E>	findListByQueryLimit(String query, int first, int max, Object... params)
protected String	getFindListQuery() Override in sub-class if not "FROM 'EntityName'"
protected String	getIdField() Override in sub-class if not "id"
E	save(E element)

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.taimos.dvalin.jpa.IEntityDAO

getEntityClass

Field Detail

entityManager

protected javax.persistence.EntityManager entityManager

Constructor Detail

EntityDAOHibernate

public EntityDAOHibernate()

Method Detail

save

@Transactional
public E save(E element)

Specified by:

save in interface IEntityDAO<E extends IEntity<I>,I>

Parameters:

element - the element to save

Returns:

the saved element

delete

@Transactional
public void delete(E element)

Specified by:

delete in interface IEntityDAO<E extends IEntity<I>,I>

Parameters:

element - the element to delete

deleteById

@Transactional
public void deleteById(I id)

Specified by:

deleteById in interface IEntityDAO<E extends IEntity<I>,I>

Parameters:

id - the id of the element to delete

findById

public E findById(I id)

Specified by:

findById in interface IEntityDAO<E extends IEntity<I>,I>

Parameters:

id - the id of the element to find

Returns:

the element with the given id or null if not found

findList

public List<E> findList(int first,
                        int max)

Specified by:

findList in interface IEntityDAO<E extends IEntity<I>,I>

Parameters:

first - first result

max - max results

Returns:

the list of elements

findList

public List<E> findList()

Specified by:

findList in interface IEntityDAO<E extends IEntity<I>,I>

Returns:

the list of elements

findByQuery

protected final E findByQuery(String query,
                              Object... params)

Parameters:

query - the JPA query

params - the positional parameters

Returns:

the entity or null if not found or more than one found

findGenericByQuery

protected final Object[] findGenericByQuery(String query,
                                            Object... params)

Parameters:

query - the JPA query

params - the positional parameters

Returns:

the entity or null if not found or more than one found

findListByQuery

protected final List<E> findListByQuery(String query,
                                        Object... params)

findGenericListByQuery

protected final List<Object[]> findGenericListByQuery(String query,
                                                      Object... params)

findGenericListByQueryLimit

protected final List<Object[]> findGenericListByQueryLimit(String query,
                                                           int first,
                                                           int max,
                                                           Object... params)

findListByQueryLimit

protected final List<E> findListByQueryLimit(String query,
                                             int first,
                                             int max,
                                             Object... params)

getIdField

protected String getIdField()

Override in sub-class if not "id"

Returns:

the id field

getFindListQuery

protected String getFindListQuery()

Override in sub-class if not "FROM 'EntityName'"

Returns:

the select query