oracle.toplink.dataservices.qcn

Class DataServiceChangeNotificationListener

java.lang.Object

oracle.toplink.dataservices.qcn.DataServiceChangeNotificationListener

public class DataServiceChangeNotificationListener
extends java.lang.Object

Configuration Class for Live Data's use of Oracle QCN. Provides the means to add/remove listeners to an Oracle DB through QCN

Since:

EclipseLink 2.4.0

Author:

tware

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	ORA_TRANSACTION_ID
static java.lang.String	ROWID
static SessionEventListener	sessionEventListener

Constructor Summary

Constructors

Constructor and Description
DataServiceChangeNotificationListener(ObjectLevelReadQuery query)

Method Summary

Modifier and Type	Method and Description
static oracle.jdbc.dcn.DatabaseChangeRegistration	createDatabaseChangeRegistration(DatabaseSession session)
static oracle.jdbc.driver.OracleConnection	getOracleConnection(org.eclipse.persistence.internal.databaseaccess.Accessor accessor, org.eclipse.persistence.internal.sessions.AbstractSession session)
void	initialize(org.eclipse.persistence.internal.sessions.AbstractSession session) Initialize the descriptor to receive database change events.
void	registerQuery(Session session, java.lang.String queryName, java.util.Map<java.lang.String,java.lang.String> queryParameters, oracle.jdbc.dcn.DatabaseChangeRegistration register, QCNSubscription subscription) Register a particular query to receive QCN notifications and add the appropriate listeners Register the event listener with the database.
static void	removeDatabaseChangeRegistration(oracle.jdbc.dcn.DatabaseChangeRegistration register, DatabaseSession session)
void	unregister(DatabaseSession session)

Methods inherited from class java.lang.Object

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

Field Detail

ORA_TRANSACTION_ID

public static java.lang.String ORA_TRANSACTION_ID

ROWID

public static java.lang.String ROWID

sessionEventListener

public static SessionEventListener sessionEventListener

Constructor Detail

DataServiceChangeNotificationListener

public DataServiceChangeNotificationListener(ObjectLevelReadQuery query)

Method Detail

createDatabaseChangeRegistration

public static oracle.jdbc.dcn.DatabaseChangeRegistration createDatabaseChangeRegistration(DatabaseSession session)

removeDatabaseChangeRegistration

public static void removeDatabaseChangeRegistration(oracle.jdbc.dcn.DatabaseChangeRegistration register,
                                                    DatabaseSession session)

getOracleConnection

public static oracle.jdbc.driver.OracleConnection getOracleConnection(org.eclipse.persistence.internal.databaseaccess.Accessor accessor,
                                                                      org.eclipse.persistence.internal.sessions.AbstractSession session)

registerQuery

public void registerQuery(Session session,
                          java.lang.String queryName,
                          java.util.Map<java.lang.String,java.lang.String> queryParameters,
                          oracle.jdbc.dcn.DatabaseChangeRegistration register,
                          QCNSubscription subscription)

Register a particular query to receive QCN notifications and add the appropriate listeners Register the event listener with the database.

initialize

public void initialize(org.eclipse.persistence.internal.sessions.AbstractSession session)

Initialize the descriptor to receive database change events. Create a cache index to store cache keys by row id Register a number of session events to store and react to transaction ids from Oracle

unregister

public void unregister(DatabaseSession session)