Package org.hibernate.engine.jdbc.connections.spi

Class AbstractMultiTenantConnectionProvider<T>

java.lang.Object

org.hibernate.engine.jdbc.connections.spi.AbstractMultiTenantConnectionProvider<T>

All Implemented Interfaces:

Serializable, MultiTenantConnectionProvider<T>, Service, Wrapped

public abstract class AbstractMultiTenantConnectionProvider<T>
extends Object
implements MultiTenantConnectionProvider<T>

Basic support for MultiTenantConnectionProvider implementations using individual ConnectionProvider instances per tenant behind the scenes.

This class is meant to be subclassed to implement application-specific requirements.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
AbstractMultiTenantConnectionProvider()

Method Summary

Modifier and Type	Method	Description
Connection	getAnyConnection()	Allows access to the database metadata of the underlying database(s) in situations where we do not have a tenant id (like startup processing, for example).
protected abstract ConnectionProvider	getAnyConnectionProvider()
Connection	getConnection(T tenantIdentifier)	Obtains a connection for use according to the underlying strategy of this provider.
boolean	isUnwrappableAs(Class<?> unwrapType)	Can this wrapped service be unwrapped as the indicated type?
void	releaseAnyConnection(Connection connection)	Release a connection obtained from MultiTenantConnectionProvider.getAnyConnection()
void	releaseConnection(T tenantIdentifier, Connection connection)	Release a connection from Hibernate use.
protected abstract ConnectionProvider	selectConnectionProvider(T tenantIdentifier)
boolean	supportsAggressiveRelease()	Does this connection provider support aggressive release of JDBC connections and later re-acquisition of those connections if needed?
<T> T	unwrap(Class<T> unwrapType)	Unproxy the service proxy

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.hibernate.engine.jdbc.connections.spi.MultiTenantConnectionProvider

getDatabaseConnectionInfo

Constructor Detail

AbstractMultiTenantConnectionProvider

public AbstractMultiTenantConnectionProvider()

Method Detail

getAnyConnectionProvider

protected abstract ConnectionProvider getAnyConnectionProvider()

selectConnectionProvider

protected abstract ConnectionProvider selectConnectionProvider(T tenantIdentifier)

getAnyConnection

public Connection getAnyConnection()
                            throws SQLException

Description copied from interface: MultiTenantConnectionProvider

Allows access to the database metadata of the underlying database(s) in situations where we do not have a tenant id (like startup processing, for example).

Specified by:

getAnyConnection in interface MultiTenantConnectionProvider<T>

Returns:

The database metadata.

Throws:

SQLException - Indicates a problem opening a connection

releaseAnyConnection

public void releaseAnyConnection(Connection connection)
                          throws SQLException

Description copied from interface: MultiTenantConnectionProvider

Release a connection obtained from MultiTenantConnectionProvider.getAnyConnection()

Specified by:

releaseAnyConnection in interface MultiTenantConnectionProvider<T>

Parameters:

connection - The JDBC connection to release

Throws:

SQLException - Indicates a problem closing the connection

getConnection

public Connection getConnection(T tenantIdentifier)
                         throws SQLException

Description copied from interface: MultiTenantConnectionProvider

Obtains a connection for use according to the underlying strategy of this provider.

Specified by:

getConnection in interface MultiTenantConnectionProvider<T>

Parameters:

tenantIdentifier - The identifier of the tenant for which to get a connection

Returns:

The obtained JDBC connection

Throws:

SQLException - Indicates a problem opening a connection

releaseConnection

public void releaseConnection(T tenantIdentifier,
                              Connection connection)
                       throws SQLException

Description copied from interface: MultiTenantConnectionProvider

Release a connection from Hibernate use.

Specified by:

releaseConnection in interface MultiTenantConnectionProvider<T>

Parameters:

tenantIdentifier - The identifier of the tenant.

connection - The JDBC connection to release

Throws:

SQLException - Indicates a problem closing the connection

supportsAggressiveRelease

public boolean supportsAggressiveRelease()

Description copied from interface: MultiTenantConnectionProvider

Does this connection provider support aggressive release of JDBC connections and later re-acquisition of those connections if needed?

This is used in conjunction with ConnectionReleaseMode.AFTER_STATEMENT to aggressively release JDBC connections. However, the configured ConnectionProvider must support re-acquisition of the same underlying connection for that semantic to work.

Typically, this is only true in managed environments where a container tracks connections by transaction or thread.

Note that JTA semantic depends on the fact that the underlying connection provider does support aggressive release.

Specified by:

supportsAggressiveRelease in interface MultiTenantConnectionProvider<T>

Returns:

true if aggressive releasing is supported; false otherwise.

isUnwrappableAs

public boolean isUnwrappableAs(Class<?> unwrapType)

Description copied from interface: Wrapped

Can this wrapped service be unwrapped as the indicated type?

Specified by:

isUnwrappableAs in interface Wrapped

Parameters:

unwrapType - The type to check.

Returns:

True/false.

unwrap

public <T> T unwrap(Class<T> unwrapType)

Description copied from interface: Wrapped

Unproxy the service proxy

Specified by:

unwrap in interface Wrapped

Parameters:

unwrapType - The java type as which to unwrap this instance.

Returns:

The unwrapped reference