org.hibernate.StatelessSession Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
package org.hibernate;
/**
* A command-oriented API for performing bulk operations against a database.
*
* A stateless session does not implement a first-level cache nor interact
* with any second-level cache, nor does it implement transactional
* write-behind or automatic dirty checking, nor do operations cascade to
* associated instances. Collections are ignored by a stateless session.
* Operations performed via a stateless session bypass Hibernate's event model
* and interceptors. Stateless sessions are vulnerable to data aliasing
* effects, due to the lack of a first-level cache.
*
* For certain kinds of transactions, a stateless session may perform slightly
* faster than a stateful session.
*
* @author Gavin King
*/
public interface StatelessSession extends SharedSessionContract {
/**
* Close the stateless session and release the JDBC connection.
*/
void close();
/**
* Insert a row.
*
* @param entity a new transient instance
*
* @return The identifier of the inserted entity
*/
Object insert(Object entity);
/**
* Insert a row.
*
* @param entityName The entityName for the entity to be inserted
* @param entity a new transient instance
*
* @return the identifier of the instance
*/
Object insert(String entityName, Object entity);
/**
* Update a row.
*
* @param entity a detached entity instance
*/
void update(Object entity);
/**
* Update a row.
*
* @param entityName The entityName for the entity to be updated
* @param entity a detached entity instance
*/
void update(String entityName, Object entity);
/**
* Delete a row.
*
* @param entity a detached entity instance
*/
void delete(Object entity);
/**
* Delete a row.
*
* @param entityName The entityName for the entity to be deleted
* @param entity a detached entity instance
*/
void delete(String entityName, Object entity);
/**
* Retrieve a row.
*
* @param entityName The name of the entity to retrieve
* @param id The id of the entity to retrieve
*
* @return a detached entity instance
*/
Object get(String entityName, Object id);
/**
* Retrieve a row.
*
* @param entityClass The class of the entity to retrieve
* @param id The id of the entity to retrieve
*
* @return a detached entity instance
*/
T get(Class entityClass, Object id);
/**
* Retrieve a row, obtaining the specified lock mode.
*
* @param entityName The name of the entity to retrieve
* @param id The id of the entity to retrieve
* @param lockMode The lock mode to apply to the entity
*
* @return a detached entity instance
*/
Object get(String entityName, Object id, LockMode lockMode);
/**
* Retrieve a row, obtaining the specified lock mode.
*
* @param entityClass The class of the entity to retrieve
* @param id The id of the entity to retrieve
* @param lockMode The lock mode to apply to the entity
*
* @return a detached entity instance
*/
T get(Class entityClass, Object id, LockMode lockMode);
/**
* Refresh the entity instance state from the database.
*
* @param entity The entity to be refreshed.
*/
void refresh(Object entity);
/**
* Refresh the entity instance state from the database.
*
* @param entityName The entityName for the entity to be refreshed.
* @param entity The entity to be refreshed.
*/
void refresh(String entityName, Object entity);
/**
* Refresh the entity instance state from the database.
*
* @param entity The entity to be refreshed.
* @param lockMode The LockMode to be applied.
*/
void refresh(Object entity, LockMode lockMode);
/**
* Refresh the entity instance state from the database.
*
* @param entityName The entityName for the entity to be refreshed.
* @param entity The entity to be refreshed.
* @param lockMode The LockMode to be applied.
*/
void refresh(String entityName, Object entity, LockMode lockMode);
/**
* Fetch an association that's configured for lazy loading.
*
* Warning: this operation in a stateless session is quite sensitive
* to data aliasing effects and should be used with great care.
*
* @param association a lazy-loaded association
*
* @see org.hibernate.Hibernate#initialize(Object)
*/
void fetch(Object association);
}