org.datanucleus.store

Class NucleusConnectionImpl

java.lang.Object

org.datanucleus.store.NucleusConnectionImpl

All Implemented Interfaces:

NucleusConnection

public class NucleusConnectionImpl
extends Object
implements NucleusConnection

Representation of a datastore connection. Provides access to the native connection for the datastore.

Field Summary

Fields

Modifier and Type	Field and Description
protected static Localiser	LOCALISER Localisation utility for output messages

Constructor Summary

Constructors

Constructor and Description
NucleusConnectionImpl(Object conn, Runnable onClose) Constructor for a datastore connection holder.

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Method to close the connection.
Object	getNativeConnection() Accessor for the native connection for this datastore.
boolean	isAvailable() Accessor for whether the connection is available.

Methods inherited from class java.lang.Object

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

Field Detail

LOCALISER

protected static final Localiser LOCALISER

Localisation utility for output messages

Constructor Detail

NucleusConnectionImpl

public NucleusConnectionImpl(Object conn,
                     Runnable onClose)

Constructor for a datastore connection holder.

Parameters:

conn - The native connection

onClose - What to perform on closure

Method Detail

close

public void close()

Method to close the connection. Performs whatever action was specified at creation.

Specified by:

close in interface NucleusConnection

Throws:

NucleusUserException - Thrown if the connection is no longer available.

isAvailable

public boolean isAvailable()

Description copied from interface: NucleusConnection

Accessor for whether the connection is available.

Specified by:

isAvailable in interface NucleusConnection

Returns:

Whether it is available

getNativeConnection

public Object getNativeConnection()

Accessor for the native connection for this datastore. For RDBMS this would be a java.sql.Connection, or for db4o an ObjectContainer etc.

Specified by:

getNativeConnection in interface NucleusConnection

Returns:

The native connection