Connection (Java 2 Platform Ent. Ed. v1.4) - Java Platform, Enterprise Edition v1.4 API Specifications

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Java^TM 2 Platform
Ent. Ed. v1.4

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javax.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
Author:: Rahul Sharma
See Also:: ConnectionFactory, Interaction

Method Summary

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 Detail

createInteraction

public 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

public 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

public 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

public 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

public 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.