Package org.eclipse.persistence.platform.database.oracle.dcn

Class OracleChangeNotificationListener

java.lang.Object
org.eclipse.persistence.platform.database.oracle.dcn.OracleChangeNotificationListener
All Implemented Interfaces:
DatabaseEventListener
public class OracleChangeNotificationListener extends Object implements DatabaseEventListener
PUBLIC: Listener for Oracle Database Change event Notification (DCN). This allows the EclipseLink cache to be invalidated by database events.
Author:
James Sutherland

  • Field Details

    • ORA_TRANSACTION_ID

      public static String ORA_TRANSACTION_ID

    • ROWID

      public static String ROWID

    • register

      protected oracle.jdbc.dcn.DatabaseChangeRegistration register
      The Oracle JDBC registration object.

    • descriptorsByTable

      protected Map<org.eclipse.persistence.internal.helper.DatabaseTable,ClassDescriptor> descriptorsByTable
      Map each table to the descriptor that needs to be invalidated.

    • transactionIdQuery

      protected ValueReadQuery transactionIdQuery
      Cache query for transaction id.

  • Constructor Details

    • OracleChangeNotificationListener

      public OracleChangeNotificationListener()

  • Method Details

    • register

      public void register(Session session)
      INTERNAL: Register the event listener with the database.
      Specified by:
      register in interface DatabaseEventListener

    • initialize

      public void initialize(ClassDescriptor descriptor, org.eclipse.persistence.internal.sessions.AbstractSession session)
      Initialize the descriptor to receive database change events. This is called when the descriptor is initialized.
      Specified by:
      initialize in interface DatabaseEventListener

    • remove

      public void remove(Session session)
      INTERNAL: Remove the event listener from the database.
      Specified by:
      remove in interface DatabaseEventListener

    • getRegister

      public oracle.jdbc.dcn.DatabaseChangeRegistration getRegister()
      INTERNAL: Return the database register.

    • setRegister

      protected void setRegister(oracle.jdbc.dcn.DatabaseChangeRegistration register)
      INTERNAL: Set the database register.

    • getDescriptorsByTable

      public Map<org.eclipse.persistence.internal.helper.DatabaseTable,ClassDescriptor> getDescriptorsByTable()
      INTERNAL: Return the mapping of tables to descriptors.

    • setDescriptorsByTable

      protected void setDescriptorsByTable(Map<org.eclipse.persistence.internal.helper.DatabaseTable,ClassDescriptor> descriptorsByTable)
      INTERNAL: Set the mapping of tables to descriptors.