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/* -*- C++ -*- */
// $Id$
// ============================================================================
//
// = LIBRARY
// TAO
//
// = FILENAME
// IOR_LookupTable.h
//
// = DESCRIPTION
// Contains the class that defines the IOR lookup table.
//
// = AUTHOR
// Vishal Kachroo
// Ossama Othman
//
// ============================================================================
#ifndef TAO_IOR_LOOKUPTABLE_H
#define TAO_IOR_LOOKUPTABLE_H
#include "ace/Synch_T.h"
#include "ace/Hash_Map_Manager.h"
#include "tao/corbafwd.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
class TAO_Export TAO_IOR_LookupTable_Callback
{
public:
virtual int find_ior (const ACE_CString &object_name,
ACE_CString &ior);
};
class TAO_Export TAO_IOR_LookupTable
{
// Represents a table for the IOR lookups, given the object keys. A
// Hash_Map_Manager is being used currently for the table. This
// could be changed/added-on-to by other data structures like a file
// etc. This class is going to be used as a backing store by the
// resolve initial references. IOR_Multicast will be responsible for
// initialising this class.
public:
// = Initialization and termination methods.
TAO_IOR_LookupTable (void);
// Constructor.
~TAO_IOR_LookupTable (void);
// Destructor.
int init (void);
// This creates and initialises the table.
// Currently, the hash map manager.
int add_ior (const ACE_CString &object_name,
const ACE_CString &ior);
// Associate <object_name> with <ior>. If <object_name> is already in the
// map then the <ACE_Hash_Map_Entry> is not changed. Returns 0 if a
// new IOR is bound successfully, returns 1 if an attempt is made
// to bind an existing object_name, and returns -1 if failures occur.
int find_ior (const ACE_CString &object_name,
ACE_CString &ior);
// Locate <object_name> and pass out parameter via <ior>. If the IOR is
// found, return 0. Return -1 if not found.
void register_callback (TAO_IOR_LookupTable_Callback *callback,
int delete_callback = 0);
// Registers a callback class with the lookup table.
CORBA_ORB_ObjectIdList_ptr list_initial_services (
CORBA_Environment &ACE_TRY_ENV = TAO_default_environment ());
// Returns a sequence of ObjectIds that lists which objects have
// references available via the initial references mechanism.
typedef ACE_Hash_Map_Manager<ACE_CString,
ACE_CString,
ACE_Null_Mutex> TAO_IOR_Map;
private:
TAO_IOR_Map table_;
// Maintains the table of object_names -> IORs.
TAO_IOR_LookupTable_Callback *callback_;
// The callback class that table can also use to find IORs.
int delete_callback_;
// If true, means delete the callback_.
};
#endif /* TAO_IOR_LOOKUPTABLE_H */
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