TAO_Storable_Naming_Context Class Reference

This class plays a role of a 'ConcreteImplementor' in the Bridge pattern architecture of the CosNaming::NamingContext implementation. More...

#include <Storable_Naming_Context.h>

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List of all members.

Public Types

typedef TAO_Storable_Bindings_Map::HASH_MAP HASH_MAP
 Underlying data structure - typedef for ease of use.

Public Member Functions

 TAO_Storable_Naming_Context (CORBA::ORB_ptr orb, PortableServer::POA_ptr poa, const char *poa_id, TAO_Naming_Service_Persistence_Factory *factory, const ACE_TCHAR *persistence_directory, size_t hash_table_size=ACE_DEFAULT_MAP_SIZE)
 Constructor.
virtual ~TAO_Storable_Naming_Context (void)
 Destructor.
virtual CosNaming::NamingContext_ptr new_context (ACE_ENV_SINGLE_ARG_DECL)
virtual void list (CORBA::ULong how_many, CosNaming::BindingList_out &bl, CosNaming::BindingIterator_out &bi ACE_ENV_ARG_DECL)
virtual void rebind (const CosNaming::Name &n, CORBA::Object_ptr obj ACE_ENV_ARG_DECL)
virtual void bind (const CosNaming::Name &n, CORBA::Object_ptr obj ACE_ENV_ARG_DECL)
virtual void bind_context (const CosNaming::Name &n, CosNaming::NamingContext_ptr nc ACE_ENV_ARG_DECL)
virtual void rebind_context (const CosNaming::Name &n, CosNaming::NamingContext_ptr nc ACE_ENV_ARG_DECL)
virtual CORBA::Object_ptr resolve (const CosNaming::Name &n ACE_ENV_ARG_DECL)
virtual void unbind (const CosNaming::Name &n ACE_ENV_ARG_DECL)
virtual CosNaming::NamingContext_ptr bind_new_context (const CosNaming::Name &n ACE_ENV_ARG_DECL)
virtual void destroy (ACE_ENV_SINGLE_ARG_DECL)

Static Public Member Functions

static CosNaming::NamingContext_ptr make_new_context (CORBA::ORB_ptr orb, PortableServer::POA_ptr poa, const char *poa_id, size_t context_size, TAO_Naming_Service_Persistence_Factory *factory, const ACE_TCHAR *persistence_directory, TAO_Storable_Naming_Context **new_context ACE_ENV_ARG_DECL)
static CosNaming::NamingContext_ptr recreate_all (CORBA::ORB_ptr orb, PortableServer::POA_ptr poa, const char *poa_id, size_t context_size, int reentering, TAO_Naming_Service_Persistence_Factory *factory, const ACE_TCHAR *persistence_directory, int use_redundancy ACE_ENV_ARG_DECL)

Protected Member Functions

int load_map (File_Open_Lock_and_Check *flck ACE_ENV_ARG_DECL)
void Write (TAO_Storable_Base &wrtr)

Protected Attributes

ACE_UINT32 counter_
 Counter used for generation of transients.
TAO_Storable_Bindings_Mapstorable_context_
CORBA::ORB_var orb_
ACE_CString name_
PortableServer::POA_var poa_
 POA we are registered with.
TAO_Naming_Service_Persistence_Factoryfactory_
ACE_CString persistence_directory_
 The directory in which to store the files.
size_t hash_table_size_
 Save the hash table initial size.
time_t last_changed_
 Disk time that match current memory state.

Static Protected Attributes

static ACE_UINT32 gcounter_
static int redundant_
 Flag to tell use whether we are redundant or not.
static const char * root_name_
static ACE_Auto_Ptr< TAO_Storable_Basegfl_
 The pointer to the global file used to allocate new contexts.

Friends

class File_Open_Lock_and_Check

Classes

class  File_Open_Lock_and_Check
 Helper class for the TAO_Storable_Naming_Context. More...

Detailed Description

This class plays a role of a 'ConcreteImplementor' in the Bridge pattern architecture of the CosNaming::NamingContext implementation.

This class provides a implementation of the NamingContext functionality, i.e., the state can be preserved across process boundaries. Derives from TAO_Hash_Naming_Context and uses TAO_Storable_Bindings_Map to store name to object bindings.


Member Typedef Documentation

typedef TAO_Storable_Bindings_Map::HASH_MAP TAO_Storable_Naming_Context::HASH_MAP
 

Underlying data structure - typedef for ease of use.


Constructor & Destructor Documentation

TAO_Storable_Naming_Context::TAO_Storable_Naming_Context CORBA::ORB_ptr  orb,
PortableServer::POA_ptr  poa,
const char *  poa_id,
TAO_Naming_Service_Persistence_Factory factory,
const ACE_TCHAR persistence_directory,
size_t  hash_table_size = ACE_DEFAULT_MAP_SIZE
 

Constructor.

TAO_Storable_Naming_Context::~TAO_Storable_Naming_Context void   )  [virtual]
 

Destructor.


Member Function Documentation

void TAO_Storable_Naming_Context::bind const CosNaming::Name n,
CORBA::Object_ptr obj  ACE_ENV_ARG_DECL
[virtual]
 

Create a binding for name <n> and object <obj> in the naming context. Compound names are treated as follows: ctx->bind (<c1; c2; c3; cn>, obj) = (ctx->resolve (<c1; c2; cn-1>))->bind (<cn>, obj) if the there already exists a binding for the specified name, <AlreadyBound> exception is thrown. Naming contexts should be bound using <bind_context> and <rebind_context> in order to participate in name resolution later.

Reimplemented from TAO_Hash_Naming_Context.

void TAO_Storable_Naming_Context::bind_context const CosNaming::Name n,
CosNaming::NamingContext_ptr nc  ACE_ENV_ARG_DECL
[virtual]
 

This is the version of <bind> specifically for binding naming contexts, so that they will participate in name resolution when compound names are passed to be resolved.

Reimplemented from TAO_Hash_Naming_Context.

CosNaming::NamingContext_ptr TAO_Storable_Naming_Context::bind_new_context const CosNaming::Name &n  ACE_ENV_ARG_DECL  )  [virtual]
 

This operation creates a new context and binds it to the name supplied as an argument. The newly-created context is implemented by the same server as the context in which it was bound (the name argument excluding the last component).

Reimplemented from TAO_Hash_Naming_Context.

void TAO_Storable_Naming_Context::destroy ACE_ENV_SINGLE_ARG_DECL   )  [virtual]
 

Delete the naming context. The user should take care to <unbind> any bindings in which the given context is bound to some names, to avoid dangling references when invoking <destroy> operation. NOTE: <destory> is a no-op on the root context. NOTE: after <destroy> is invoked on a Naming Context, all BindingIterators associated with that Naming Context are also destroyed.

Reimplemented from TAO_Hash_Naming_Context.

void TAO_Storable_Naming_Context::list CORBA::ULong  how_many,
CosNaming::BindingList_out &  bl,
CosNaming::BindingIterator_out &bi  ACE_ENV_ARG_DECL
[virtual]
 

Returns at most the requested number of bindings <how_many> in <bl>. If the naming context contains additional bindings, they are returned with a BindingIterator. In the naming context does not contain any additional bindings <bi> returned as null.

Implements TAO_Naming_Context_Impl.

int TAO_Storable_Naming_Context::load_map File_Open_Lock_and_Check *flck  ACE_ENV_ARG_DECL  )  [protected]
 

CosNaming::NamingContext_ptr TAO_Storable_Naming_Context::make_new_context CORBA::ORB_ptr  orb,
PortableServer::POA_ptr  poa,
const char *  poa_id,
size_t  context_size,
TAO_Naming_Service_Persistence_Factory factory,
const ACE_TCHAR persistence_directory,
TAO_Storable_Naming_Context **new_context  ACE_ENV_ARG_DECL
[static]
 

This utility method factors out the code needed to create a new Storable Naming Context servant and activate it under the specified POA with the specified id. This function is static so that the code can be used, both from inside the class (e.g., <new_context>), and from outside (e.g., Naming_Utils.cpp).

CosNaming::NamingContext_ptr TAO_Storable_Naming_Context::new_context ACE_ENV_SINGLE_ARG_DECL   )  [virtual]
 

This operation returns a new naming context implemented by the same naming server in which the operation was invoked. The context is not bound.

Implements TAO_Naming_Context_Impl.

void TAO_Storable_Naming_Context::rebind const CosNaming::Name n,
CORBA::Object_ptr obj  ACE_ENV_ARG_DECL
[virtual]
 

This is similar to <bind> operation above, except for when the binding for the specified name already exists in the specified context. In that case, the existing binding is replaced with the new one.

Reimplemented from TAO_Hash_Naming_Context.

void TAO_Storable_Naming_Context::rebind_context const CosNaming::Name n,
CosNaming::NamingContext_ptr nc  ACE_ENV_ARG_DECL
[virtual]
 

This is a version of <rebind> specifically for naming contexts, so that they can participate in name resolution when compound names are passed.

Reimplemented from TAO_Hash_Naming_Context.

CosNaming::NamingContext_ptr TAO_Storable_Naming_Context::recreate_all CORBA::ORB_ptr  orb,
PortableServer::POA_ptr  poa,
const char *  poa_id,
size_t  context_size,
int  reentering,
TAO_Naming_Service_Persistence_Factory factory,
const ACE_TCHAR persistence_directory,
int use_redundancy  ACE_ENV_ARG_DECL
[static]
 

CORBA::Object_ptr TAO_Storable_Naming_Context::resolve const CosNaming::Name &n  ACE_ENV_ARG_DECL  )  [virtual]
 

Return object reference that is bound to the name. Compound name resolve is defined as follows: ctx->resolve (<c1; c2; cn>) = ctx->resolve (<c1; c2 cn-1>)->resolve (<cn>) The naming service does not return the type of the object. Clients are responsible for "narrowing" the object to the appropriate type.

Reimplemented from TAO_Hash_Naming_Context.

void TAO_Storable_Naming_Context::unbind const CosNaming::Name &n  ACE_ENV_ARG_DECL  )  [virtual]
 

Remove the name binding from the context. When compound names are used, unbind is defined as follows: ctx->unbind (<c1; c2; cn>) = (ctx->resolve (<c1; c2; cn-1>))->unbind (<cn>)

Reimplemented from TAO_Hash_Naming_Context.

void TAO_Storable_Naming_Context::Write TAO_Storable_Base wrtr  )  [protected]
 


Friends And Related Function Documentation

friend class File_Open_Lock_and_Check [friend]
 


Member Data Documentation

ACE_UINT32 TAO_Storable_Naming_Context::counter_ [protected]
 

Counter used for generation of transients.

TAO_Naming_Service_Persistence_Factory* TAO_Storable_Naming_Context::factory_ [protected]
 

ACE_UINT32 TAO_Storable_Naming_Context::gcounter_ [static, protected]
 

Global counter used for generation of POA ids for children Naming Contexts.

ACE_Auto_Ptr< TAO_Storable_Base > TAO_Storable_Naming_Context::gfl_ [static, protected]
 

The pointer to the global file used to allocate new contexts.

size_t TAO_Storable_Naming_Context::hash_table_size_ [protected]
 

Save the hash table initial size.

time_t TAO_Storable_Naming_Context::last_changed_ [protected]
 

Disk time that match current memory state.

ACE_CString TAO_Storable_Naming_Context::name_ [protected]
 

CORBA::ORB_var TAO_Storable_Naming_Context::orb_ [protected]
 

ACE_CString TAO_Storable_Naming_Context::persistence_directory_ [protected]
 

The directory in which to store the files.

PortableServer::POA_var TAO_Storable_Naming_Context::poa_ [protected]
 

POA we are registered with.

Reimplemented from TAO_Hash_Naming_Context.

int TAO_Storable_Naming_Context::redundant_ [static, protected]
 

Flag to tell use whether we are redundant or not.

const char * TAO_Storable_Naming_Context::root_name_ [static, protected]
 

TAO_Storable_Bindings_Map* TAO_Storable_Naming_Context::storable_context_ [protected]
 

A pointer to the underlying data structure used to store name bindings. While our superclass (TAO_Hash_Naming_Context) also maintains a pointer to the data structure, keeping this pointer around saves us from the need to downcast when invoking non-virtual methods.


The documentation for this class was generated from the following files:
Generated on Wed Nov 23 16:32:09 2005 for TAO_CosNaming by  doxygen 1.4.5