org.hibernate.SessionFactory 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;
import java.io.Serializable;
import java.sql.Connection;
import java.util.Map;
import java.util.Set;
import javax.naming.Referenceable;
import javax.persistence.EntityManagerFactory;
import org.hibernate.boot.spi.SessionFactoryOptions;
import org.hibernate.engine.spi.FilterDefinition;
import org.hibernate.jpa.HibernateEntityManagerFactory;
import org.hibernate.metadata.ClassMetadata;
import org.hibernate.metadata.CollectionMetadata;
import org.hibernate.stat.Statistics;
/**
* The main contract here is the creation of {@link Session} instances. Usually
* an application has a single {@link SessionFactory} instance and threads
* servicing client requests obtain {@link Session} instances from this factory.
*
* The internal state of a {@link SessionFactory} is immutable. Once it is created
* this internal state is set. This internal state includes all of the metadata
* about Object/Relational Mapping.
*
* Implementors must be threadsafe.
*
* @see org.hibernate.cfg.Configuration
*
* @author Gavin King
* @author Steve Ebersole
*/
public interface SessionFactory extends EntityManagerFactory, HibernateEntityManagerFactory, Referenceable, Serializable, java.io.Closeable {
/**
* Get the special options used to build the factory.
*
* @return The special options used to build the factory.
*/
SessionFactoryOptions getSessionFactoryOptions();
/**
* Obtain a {@link Session} builder.
*
* @return The session builder
*/
SessionBuilder withOptions();
/**
* Open a {@link Session}.
*
* JDBC {@link Connection connection(s} will be obtained from the
* configured {@link org.hibernate.engine.jdbc.connections.spi.ConnectionProvider} as needed
* to perform requested work.
*
* @return The created session.
*
* @throws HibernateException Indicates a problem opening the session; pretty rare here.
*/
Session openSession() throws HibernateException;
/**
* Obtains the current session. The definition of what exactly "current"
* means controlled by the {@link org.hibernate.context.spi.CurrentSessionContext} impl configured
* for use.
*
* Note that for backwards compatibility, if a {@link org.hibernate.context.spi.CurrentSessionContext}
* is not configured but JTA is configured this will default to the {@link org.hibernate.context.internal.JTASessionContext}
* impl.
*
* @return The current session.
*
* @throws HibernateException Indicates an issue locating a suitable current session.
*/
Session getCurrentSession() throws HibernateException;
/**
* Obtain a {@link StatelessSession} builder.
*
* @return The stateless session builder
*/
StatelessSessionBuilder withStatelessOptions();
/**
* Open a new stateless session.
*
* @return The created stateless session.
*/
StatelessSession openStatelessSession();
/**
* Open a new stateless session, utilizing the specified JDBC
* {@link Connection}.
*
* @param connection Connection provided by the application.
*
* @return The created stateless session.
*/
StatelessSession openStatelessSession(Connection connection);
/**
* Retrieve the statistics fopr this factory.
*
* @return The statistics.
*/
Statistics getStatistics();
/**
* Destroy this SessionFactory and release all resources (caches,
* connection pools, etc).
*
* It is the responsibility of the application to ensure that there are no
* open {@link Session sessions} beforeQuery calling this method as the impact
* on those {@link Session sessions} is indeterminate.
*
* No-ops if already {@link #isClosed closed}.
*
* @throws HibernateException Indicates an issue closing the factory.
*/
void close() throws HibernateException;
/**
* Is this factory already closed?
*
* @return True if this factory is already closed; false otherwise.
*/
boolean isClosed();
/**
* Obtain direct access to the underlying cache regions.
*
* @return The direct cache access API.
*/
@Override
Cache getCache();
/**
* Obtain a set of the names of all filters defined on this SessionFactory.
*
* @return The set of filter names.
*/
Set getDefinedFilterNames();
/**
* Obtain the definition of a filter by name.
*
* @param filterName The name of the filter for which to obtain the definition.
* @return The filter definition.
* @throws HibernateException If no filter defined with the given name.
*/
FilterDefinition getFilterDefinition(String filterName) throws HibernateException;
/**
* Determine if this session factory contains a fetch profile definition
* registered under the given name.
*
* @param name The name to check
* @return True if there is such a fetch profile; false otherwise.
*/
boolean containsFetchProfileDefinition(String name);
/**
* Retrieve this factory's {@link TypeHelper}.
*
* @return The factory's {@link TypeHelper}
*/
TypeHelper getTypeHelper();
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Deprecations
/**
* Retrieve the {@link ClassMetadata} associated with the given entity class.
*
* @param entityClass The entity class
*
* @return The metadata associated with the given entity; may be null if no such
* entity was mapped.
*
* @throws HibernateException Generally null is returned instead of throwing.
*
* @deprecated Use the descriptors from {@link #getMetamodel()} instead
*/
@Deprecated
ClassMetadata getClassMetadata(Class entityClass);
/**
* Retrieve the {@link ClassMetadata} associated with the given entity class.
*
* @param entityName The entity class
*
* @return The metadata associated with the given entity; may be null if no such
* entity was mapped.
*
* @throws HibernateException Generally null is returned instead of throwing.
* @since 3.0
*
* @deprecated Use the descriptors from {@link #getMetamodel()} instead
*/
@Deprecated
ClassMetadata getClassMetadata(String entityName);
/**
* Get the {@link CollectionMetadata} associated with the named collection role.
*
* @param roleName The collection role (in form [owning-entity-name].[collection-property-name]).
*
* @return The metadata associated with the given collection; may be null if no such
* collection was mapped.
*
* @throws HibernateException Generally null is returned instead of throwing.
*
* @deprecated Use the descriptors from {@link #getMetamodel()} instead
*/
@Deprecated
CollectionMetadata getCollectionMetadata(String roleName);
/**
* Retrieve the {@link ClassMetadata} for all mapped entities.
*
* @return A map containing all {@link ClassMetadata} keyed by the
* corresponding {@link String} entity-name.
*
* @throws HibernateException Generally empty map is returned instead of throwing.
*
* @since 3.0 changed key from {@link Class} to {@link String}.
*
* @deprecated Use the descriptors from {@link #getMetamodel()} instead
*/
@Deprecated
Map getAllClassMetadata();
/**
* Get the {@link CollectionMetadata} for all mapped collections.
*
* @return a map from String to CollectionMetadata
*
* @throws HibernateException Generally empty map is returned instead of throwing.
*
* @deprecated Use the descriptors from {@link #getMetamodel()} instead
*/
@Deprecated
Map getAllCollectionMetadata();
}