org.datanucleus.api.jdo

Class JDOConnectionImpl

java.lang.Object

org.datanucleus.api.jdo.JDOConnectionImpl

All Implemented Interfaces:

javax.jdo.datastore.JDOConnection

Direct Known Subclasses:

JDOConnectionJDBCImpl

public class JDOConnectionImpl
extends Object
implements javax.jdo.datastore.JDOConnection

Implementation of a generic JDO connection for non-RDBMS datastores. Takes the NucleusConnection as input, providing all behaviour and closure of underlying connections.

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.datanucleus.util.Localiser	LOCALISER Localisation utility for output messages
protected org.datanucleus.store.NucleusConnection	nucConn Underlying NucleusConnection providing the connection.

Constructor Summary

Constructors

Constructor and Description
JDOConnectionImpl(org.datanucleus.store.NucleusConnection nconn) Constructor taking the underlying NucleusConnection that provides the datastore access.

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.
protected void	throwExceptionNotAvailable() Throw a JDOUserException that the connection is no longer available
protected void	throwExceptionUnsupportedOperation(String methodName) Convenience method that throws a JDOUserException that the specified method name is not supported.

Methods inherited from class java.lang.Object

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

Field Detail

LOCALISER

protected static final org.datanucleus.util.Localiser LOCALISER

Localisation utility for output messages

nucConn

protected org.datanucleus.store.NucleusConnection nucConn

Underlying NucleusConnection providing the connection.

Constructor Detail

JDOConnectionImpl

public JDOConnectionImpl(org.datanucleus.store.NucleusConnection nconn)

Constructor taking the underlying NucleusConnection that provides the datastore access.

Parameters:

nconn - Underlying connection

Method Detail

close

public void close()

Method to close the connection.

Specified by:

close in interface javax.jdo.datastore.JDOConnection

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 javax.jdo.datastore.JDOConnection

Returns:

The native connection

throwExceptionNotAvailable

protected void throwExceptionNotAvailable()

Throw a JDOUserException that the connection is no longer available

Throws:

javax.jdo.JDOUserException

throwExceptionUnsupportedOperation

protected void throwExceptionUnsupportedOperation(String methodName)

Convenience method that throws a JDOUserException that the specified method name is not supported.

Parameters:

methodName - Name of the method