Mon Jun 23 12:38:54 2003 Rich Seibel <seibel_r@ociweb.com>

1 files changed, 83 insertions, 0 deletions

diff --git a/TAO/orbsvcs/orbsvcs/Naming/Storable_Naming_Context_Activator.h b/TAO/orbsvcs/orbsvcs/Naming/Storable_Naming_Context_Activator.h
new file mode 100644
index 00000000000..159b5c2b2c1
--- /dev/null
+++ b/TAO/orbsvcs/orbsvcs/Naming/Storable_Naming_Context_Activator.h
@@ -0,0 +1,83 @@
+/* -*- C++ -*- */
+// $Id$
+// ============================================================================
+//
+// = LIBRARY
+//    cos
+//
+// = FILENAME
+//   Storable_Naming_Context_Activator.h
+//
+// = AUTHOR
+//    Byron Harris <harris_b@ociweb.com>
+//
+// ============================================================================
+
+#ifndef TAO_STORABLE_NAMING_CONTEXT_ACTIVATOR_H
+#define TAO_STORABLE_NAMING_CONTEXT_ACTIVATOR_H
+#include "ace/pre.h"
+
+#include "tao/PortableServer/PortableServer.h"
+
+#if (TAO_HAS_MINIMUM_POA == 0)
+
+#include "naming_export.h"
+
+class TAO_Naming_Service_Persistence_Factory;
+
+/**
+ * A servant activator to be use with a TAO_Storable_Naming_Context.
+ * Permits contexts saved to disk in one naming service process to be
+ * "lazily" created on demand in other processes by reading the
+ * context file off disk only when a request to the context is made.
+ */
+class TAO_Naming_Export TAO_Storable_Naming_Context_Activator :
+  public PortableServer::ServantActivator
+{
+public:
+
+  /**
+   * The constructor takes arguments needed to create a
+   * TAO_Storable_Naming_Context and TAO_Naming_Context on demand.
+   */
+  TAO_Storable_Naming_Context_Activator(CORBA::ORB_ptr orb,
+                                        TAO_Naming_Service_Persistence_Factory *factory,
+                                        const ACE_TCHAR *persistence_directory,
+                                        size_t context_size);
+
+  virtual ~TAO_Storable_Naming_Context_Activator();
+
+  /**
+   * Create a TAO_Storable_Naming_Context and TAO_Naming_Context on
+   * demand if a request to a naming context CORBA reference is made
+   * and the servant implementing this reference does not yet exist.
+   */
+  virtual PortableServer::Servant incarnate (const PortableServer::ObjectId &oid,
+                                             PortableServer::POA_ptr poa
+                                             ACE_ENV_ARG_DECL)
+    ACE_THROW_SPEC ((CORBA::SystemException,
+                     PortableServer::ForwardRequest));
+
+  /**
+   * Used by the POA to delete the servant created from a call to incarnate.
+   */
+  virtual void etherealize (const PortableServer::ObjectId &oid,
+                            PortableServer::POA_ptr adapter,
+                            PortableServer::Servant servant,
+                            CORBA::Boolean cleanup_in_progress,
+                            CORBA::Boolean remaining_activations
+                            ACE_ENV_ARG_DECL)
+    ACE_THROW_SPEC ((CORBA::SystemException));
+
+private:
+
+  CORBA::ORB_ptr orb_;
+  TAO_Naming_Service_Persistence_Factory *factory_;
+  const ACE_TCHAR *persistence_directory_;
+  size_t context_size_;
+};
+
+#endif /* TAO_HAS_MINIMUM_POA */
+
+#include "ace/post.h"
+#endif