Module jakarta.resource

Package jakarta.resource.cci

Interface Connection

public interface Connection

A Connection represents an application-level handle that is used by a client to access the underlying physical connection. The actual physical connection associated with a Connection instance is represented by a ManagedConnection instance.

A client gets a Connection instance by using the getConnection method on a ConnectionFactory instance. A connection can be associated with zero or more Interaction instances.

Version:

0.8

See Also:

• ConnectionFactory
• Interaction

Method Summary

Modifier and Type	Method	Description
void	close()	Initiates close of the connection handle at the application level.
Interaction	createInteraction()	Creates an Interaction associated with this Connection.
LocalTransaction	getLocalTransaction()	Returns an LocalTransaction instance that enables a component to demarcate resource manager local transactions on the Connection.
ConnectionMetaData	getMetaData()	Gets the information on the underlying EIS instance represented through an active connection.
ResultSetInfo	getResultSetInfo()	Gets the information on the ResultSet functionality supported by a connected EIS instance.

Method Details

createInteraction

Interaction createInteraction()
                       throws ResourceException

Creates an Interaction associated with this Connection. An Interaction enables an application to execute EIS functions.

Returns:

Interaction instance

Throws:

ResourceException - Failed to create an Interaction

getLocalTransaction

LocalTransaction getLocalTransaction()
                              throws ResourceException

Returns an LocalTransaction instance that enables a component to demarcate resource manager local transactions on the Connection. If a resource adapter does not allow a component to demarcate local transactions on an Connection using LocalTransaction interface, then the method getLocalTransaction should throw a NotSupportedException.

Returns:

LocalTransaction instance

Throws:

ResourceException - Failed to return a LocalTransaction instance because of a resource adapter error

NotSupportedException - Demarcation of Resource manager local transactions is not supported on this Connection

See Also:

• LocalTransaction

getMetaData

ConnectionMetaData getMetaData()
                        throws ResourceException

Gets the information on the underlying EIS instance represented through an active connection.

Returns:

ConnectionMetaData instance representing information about the EIS instance

Throws:

ResourceException - Failed to get information about the connected EIS instance. Error can be resource adapter-internal, EIS-specific or communication related.

getResultSetInfo

ResultSetInfo getResultSetInfo()
                        throws ResourceException

Gets the information on the ResultSet functionality supported by a connected EIS instance.

Returns:

ResultSetInfo instance

Throws:

ResourceException - Failed to get ResultSet related information

NotSupportedException - ResultSet functionality is not supported

close

void close()
    throws ResourceException

Initiates close of the connection handle at the application level. A client should not use a closed connection to interact with an EIS.

Throws:

ResourceException - Exception thrown if close on a connection handle fails.

Any invalid connection close invocation--example, calling close on a connection handle that is already closed--should also throw this exception.