com.blazebit.persistence.spi

Interface EntityManagerIntegrator

public interface EntityManagerIntegrator

Interface implemented by the criteria provider. It is used to integrate some features with the persistence provider.

Since:

1.0

Author:

Christian Beikov, Moritz Becker

Method Summary

Methods

Modifier and Type	Method and Description
String	getDbms(javax.persistence.EntityManager entityManager) Returns the name of dbms for which the given entity manager operates.
Set<String>	getRegisteredFunctions(javax.persistence.EntityManager entityManager) Returns the names of all registered functions.
javax.persistence.EntityManager	registerFunctions(javax.persistence.EntityManager entityManager, Map<String,JpqlFunctionGroup> dbmsFunctions) Registers the given functions under the given names on the given entity manager.

Method Detail

getDbms

String getDbms(javax.persistence.EntityManager entityManager)

Returns the name of dbms for which the given entity manager operates.

Parameters:

entityManager - Then entity manager for which to retrieve the dbms from

Returns:

The name of the dbms

Since:

1.1.0

registerFunctions

javax.persistence.EntityManager registerFunctions(javax.persistence.EntityManager entityManager,
                                                Map<String,JpqlFunctionGroup> dbmsFunctions)

Registers the given functions under the given names on the given entity manager. The dbmsFunctions map the function name to a map of dbms specific functions. The dbms specific functions map uses a dbms identifier as key.

Parameters:

entityManager - The entity manager which should be enriched

dbmsFunctions - The functions for various dbms

Returns:

The enriched entity manager

getRegisteredFunctions

Set<String> getRegisteredFunctions(javax.persistence.EntityManager entityManager)

Returns the names of all registered functions.

Parameters:

entityManager - The entity manager which should be queried

Returns:

The set of function names