com.axelor.db

Class JpaSupport

java.lang.Object

com.axelor.db.JpaSupport

public abstract class JpaSupport
extends Object

This class provides some useful methods in JPA context, can be used as a base class for services to make it more convenient.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static interface	JpaSupport.JDBCTask The jdbc task interface.

Constructor Summary

Constructors

Constructor and Description
JpaSupport()

Method Summary

Modifier and Type	Method and Description
protected <T extends Model> Query<T>	all(Class<T> modelClass) Get the Query instance for the given model class.
protected EntityManager	getEntityManager() Get the instance of current EntityManager.
protected void	inTransaction(Runnable task) Run the given task inside a transaction that is committed after the task is completed.
protected void	jdbcTask(JpaSupport.JDBCTask task) Perform JDBC related task using the Connection managed by the current EntityManager.

Methods inherited from class java.lang.Object

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

Constructor Detail

JpaSupport

public JpaSupport()

Method Detail

getEntityManager

protected EntityManager getEntityManager()

Get the instance of current EntityManager.

Returns:

the EntityManager instance

all

protected <T extends Model> Query<T> all(Class<T> modelClass)

Get the Query instance for the given model class.

Type Parameters:

T - the type of the model

Parameters:

modelClass - the model class

Returns:

an instance of Query

inTransaction

protected void inTransaction(Runnable task)

Run the given task inside a transaction that is committed after the task is completed.

Parameters:

task - the task to run

jdbcTask

protected void jdbcTask(JpaSupport.JDBCTask task)

Perform JDBC related task using the Connection managed by the current EntityManager.

Parameters:

task - The task to be performed

Throws:

PersistenceException - Generally indicates wrapped SQLException