org.cyclos.impl.utils.persistence

Interface BaseEntityManagerHandler

All Known Subinterfaces:

EntityManagerHandler, RawEntityManagerHandler

public interface BaseEntityManagerHandler

Handler for EntityManager and EntityManagerFactory access

Author:

luis

Method Summary

Modifier and Type	Method and Description
void	clear() Clears the underlying EntityManager
com.querydsl.jpa.impl.JPADeleteClause	delete(com.querydsl.core.types.EntityPath<?> entity) Returns a delete clause
void	detach(IEntity entity) Detaches the given entity from the underlying EntityManager
<E extends IEntity> E	find(java.lang.Class<E> entityClass, java.lang.Long id) Finds the given entity by id
void	flush() Flushes the underlying EntityManager
org.cyclos.impl.utils.persistence.DBQuery<?>	from(com.querydsl.core.types.EntityPath<?>... from) Creates a new query, assigning the from clause
void	persist(IEntity entity) Persists the given entity
void	persist(IEntity entity, boolean flush) Persists the given entity, optionally flushing the underlying entity manager
<E extends IEntity> E	refresh(E entity) Refreshes the current state of the given entity, returning the updated instance.
void	remove(IEntity entity) Removes the given entity, flushing the underlying entity manager
void	remove(IEntity entity, boolean flush) Removes the given entity, optionally flushing the underlying entity manager
<T> org.cyclos.impl.utils.persistence.DBQuery<T>	selectFrom(com.querydsl.core.types.EntityPath<T> from) Creates a new query, assigning the from clause and select clauses
org.cyclos.impl.utils.persistence.DBQuery<?>	subQuery(com.querydsl.core.types.EntityPath<?>... from) Creates a new subquery, assigning the from clause
com.querydsl.jpa.impl.JPAUpdateClause	update(com.querydsl.core.types.EntityPath<?> entity) Returns an update clause

Method Detail

clear

void clear()

Clears the underlying EntityManager

delete

com.querydsl.jpa.impl.JPADeleteClause delete(com.querydsl.core.types.EntityPath<?> entity)

Returns a delete clause

detach

void detach(IEntity entity)

Detaches the given entity from the underlying EntityManager

find

<E extends IEntity> E find(java.lang.Class<E> entityClass,
                           java.lang.Long id)
                    throws EntityNotFoundException

Finds the given entity by id

Throws:

EntityNotFoundException

flush

void flush()

Flushes the underlying EntityManager

from

org.cyclos.impl.utils.persistence.DBQuery<?> from(com.querydsl.core.types.EntityPath<?>... from)

Creates a new query, assigning the from clause

persist

void persist(IEntity entity)

Persists the given entity

persist

void persist(IEntity entity,
             boolean flush)

Persists the given entity, optionally flushing the underlying entity manager

refresh

<E extends IEntity> E refresh(E entity)

Refreshes the current state of the given entity, returning the updated instance. If the underlying EntityManager contains the given entity, will directly refresh it and return the same instance. Otherwise, will find the entity by id.

remove

void remove(IEntity entity)
     throws ConstraintViolatedOnRemoveException

Removes the given entity, flushing the underlying entity manager

Throws:

ConstraintViolatedOnRemoveException

remove

void remove(IEntity entity,
            boolean flush)
     throws ConstraintViolatedOnRemoveException

Removes the given entity, optionally flushing the underlying entity manager

Throws:

ConstraintViolatedOnRemoveException

selectFrom

<T> org.cyclos.impl.utils.persistence.DBQuery<T> selectFrom(com.querydsl.core.types.EntityPath<T> from)

Creates a new query, assigning the from clause and select clauses

subQuery

org.cyclos.impl.utils.persistence.DBQuery<?> subQuery(com.querydsl.core.types.EntityPath<?>... from)

Creates a new subquery, assigning the from clause

update

com.querydsl.jpa.impl.JPAUpdateClause update(com.querydsl.core.types.EntityPath<?> entity)

Returns an update clause