TAO_Persistent_Bindings_Map Class Reference

Provides hash-table-based persistent storage for name to object bindings in a Naming Context. More...

#include <Persistent_Naming_Context.h>

Inheritance diagram for TAO_Persistent_Bindings_Map:

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List of all members.

Public Types

typedef ACE_Hash_Map_With_Allocator<
TAO_Persistent_ExtId, TAO_Persistent_IntId
HASH_MAP
 Underlying data structure - typedef for ease of use.

Public Member Functions

 TAO_Persistent_Bindings_Map (CORBA::ORB_ptr orb)
 Constructor.
int open (size_t hash_map_size, ACE_Allocator *alloc)
void set (HASH_MAP *map, ACE_Allocator *alloc)
virtual ~TAO_Persistent_Bindings_Map (void)
void destroy (void)
HASH_MAPmap (void)
 Get a pointer to the underlying hash map.
size_t total_size (void)
 Return the size of the underlying hash table.
virtual size_t current_size (void)
 Return the size of the underlying hash table.
virtual int bind (const char *id, const char *kind, CORBA::Object_ptr obj, CosNaming::BindingType type)
virtual int rebind (const char *id, const char *kind, CORBA::Object_ptr obj, CosNaming::BindingType type)
virtual int unbind (const char *id, const char *kind)
virtual int find (const char *id, const char *kind, CORBA::Object_ptr &obj, CosNaming::BindingType &type)

Protected Member Functions

int open_helper (size_t hash_table_size, void *buffer)
int shared_bind (const char *id, const char *kind, CORBA::Object_ptr obj, CosNaming::BindingType type, int rebind)
 Helper: factors common code from <bind> and <rebind>.

Protected Attributes

ACE_Allocatorallocator_
 Pointer to the allocator we use to make bindings persistent.
HASH_MAPmap_
 Pointer to the underlying hash map.
CORBA::ORB_var orb_
 Pointer to the orb. We need it to do string/object conversions.

Detailed Description

Provides hash-table-based persistent storage for name to object bindings in a Naming Context.

Wrapper on top of ACE_Hash_Map_With_Allocator (which is a wrapper around ACE_Hash_Map_Manager). Uses ACE_Allocator (allocating from persistent storage) to make bindings persistent and supports TAO_Bindings_Map interface. Used by TAO_Persistent_Naming_Context.


Member Typedef Documentation

typedef ACE_Hash_Map_With_Allocator<TAO_Persistent_ExtId, TAO_Persistent_IntId> TAO_Persistent_Bindings_Map::HASH_MAP
 

Underlying data structure - typedef for ease of use.


Constructor & Destructor Documentation

TAO_Persistent_Bindings_Map::TAO_Persistent_Bindings_Map CORBA::ORB_ptr  orb  ) 
 

Constructor.

TAO_Persistent_Bindings_Map::~TAO_Persistent_Bindings_Map void   )  [virtual]
 

Destructor. Does not deallocate the hash map: if an instance of this class goes out of scope, its hash_map remains in persistent storage.


Member Function Documentation

int TAO_Persistent_Bindings_Map::bind const char *  id,
const char *  kind,
CORBA::Object_ptr  obj,
CosNaming::BindingType  type
[virtual]
 

Add a binding with the specified parameters to the table. Return 0 on success and -1 on failure, 1 if there already is a binding with <id> and <kind>.

Implements TAO_Bindings_Map.

size_t TAO_Persistent_Bindings_Map::current_size void   )  [virtual]
 

Return the size of the underlying hash table.

Implements TAO_Bindings_Map.

void TAO_Persistent_Bindings_Map::destroy void   ) 
 

This method removes the hash map from persistent storage/frees up the memory. The hash map better be empty, since we are not cleaning up the insides. (We could add <close> to clean entries, but not the data inside the entries.

int TAO_Persistent_Bindings_Map::find const char *  id,
const char *  kind,
CORBA::Object_ptr obj,
CosNaming::BindingType type
[virtual]
 

Find the binding containing <id> and <kind> in the table, and pass binding's type and object back to the caller by reference. Return 0 on success and -1 on failure. Note: a 'duplicated' object reference is assigned to <obj>, so the caller is responsible for its deallocation.

Implements TAO_Bindings_Map.

TAO_Persistent_Bindings_Map::HASH_MAP * TAO_Persistent_Bindings_Map::map void   ) 
 

Get a pointer to the underlying hash map.

int TAO_Persistent_Bindings_Map::open size_t  hash_map_size,
ACE_Allocator alloc
 

Allocate hash map of size <hash_map_size> from persistent storage using the <alloc>.

int TAO_Persistent_Bindings_Map::open_helper size_t  hash_table_size,
void *  buffer
[protected]
 

Helper to the <open> method. By isolating placement new into a separate method, we can deal with memory allocation failures more efficiently. If there is a problem in HASH_MAP constructor, we can clean up preallocated space.

int TAO_Persistent_Bindings_Map::rebind const char *  id,
const char *  kind,
CORBA::Object_ptr  obj,
CosNaming::BindingType  type
[virtual]
 

Overwrite a binding containing <id> and <kind> (or create a new one if one doesn't exist) with the specified parameters. Return 0 or 1 on success. Return -1 or -2 on failure. (-2 is returned if the new and old bindings differ in type).

Implements TAO_Bindings_Map.

void TAO_Persistent_Bindings_Map::set HASH_MAP map,
ACE_Allocator alloc
 

The hash map has already been preallocated for us. We just need to set our data members take ownership of it.

int TAO_Persistent_Bindings_Map::shared_bind const char *  id,
const char *  kind,
CORBA::Object_ptr  obj,
CosNaming::BindingType  type,
int  rebind
[protected]
 

Helper: factors common code from <bind> and <rebind>.

size_t TAO_Persistent_Bindings_Map::total_size void   ) 
 

Return the size of the underlying hash table.

int TAO_Persistent_Bindings_Map::unbind const char *  id,
const char *  kind
[virtual]
 

Remove a binding containing <id> and <kind> from the table. Return 0 on success and -1 on failure.

Implements TAO_Bindings_Map.


Member Data Documentation

ACE_Allocator* TAO_Persistent_Bindings_Map::allocator_ [protected]
 

Pointer to the allocator we use to make bindings persistent.

HASH_MAP* TAO_Persistent_Bindings_Map::map_ [protected]
 

Pointer to the underlying hash map.

CORBA::ORB_var TAO_Persistent_Bindings_Map::orb_ [protected]
 

Pointer to the orb. We need it to do string/object conversions.


The documentation for this class was generated from the following files:
Generated on Wed Nov 23 16:32:06 2005 for TAO_CosNaming by  doxygen 1.4.5