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// $Id$

#ifndef CCMOBJECTLOCATOR_H_
#define CCMOBJECTLOCATOR_H_

#include "ace/Map_Manager.h"
#include "ace/Null_Mutex.h"
#include "ace/SStringfwd.h"
#include "ace/String_Base.h"
#include "tao/corba.h"
#include "tao/ORB.h"
#include "tao/Object.h"
#include "tao/PortableServer/PortableServer.h"
#include "tao/PortableServer/ServantLocatorC.h"

#include "RedirectionService_Export.h"

namespace DAnCE
{

  class RedirectionService_Export CCMObjectLocator
    : public PortableServer::ServantLocator
    , public ::CORBA::LocalObject
  {
  public:
    class TreeNode;
    typedef ACE_Map_Manager<ACE_CString, TreeNode*, ACE_Null_Mutex> TNodes;
    class TreeNode
    {
    public:
      static const char delimiter_ = '/';
      TreeNode() {};
      TreeNode (const TreeNode & src);
      ~TreeNode();
      CORBA::Object_ptr getValue() const
      {
        return CORBA::Object::_duplicate (this->obj_.in());
      };
      CORBA::Object_ptr getValue (const char * path) const;
      void setValue (CORBA::Object_ptr obj)
      {
        this->obj_ = CORBA::Object::_duplicate (obj);
      };
      void addChild (const char * path, CORBA::Object_ptr obj = CORBA::Object::_nil());
      void addChild (const char * path, TreeNode & node);
      void removeChild (const char * path);
      int missingNodeLevel (const char * path);
      static ACE_CString mergePath (const char * parent, const char * child);
    private:
      CORBA::Object_var obj_;
      TNodes children_;
      TreeNode * getChild (const char * path) const;
      static ACE_CString splitPath (ACE_CString & path, bool first = true);
    };

    CCMObjectLocator (CORBA::ORB_ptr orb, PortableServer::POA_ptr parent_poa, const char * poa_name);

    virtual ~CCMObjectLocator();

    virtual ::PortableServer::Servant preinvoke (
                                                 const ::PortableServer::ObjectId & oid,
                                                 ::PortableServer::POA_ptr adapter,
                                                 const char * operation,
                                                 ::PortableServer::ServantLocator::Cookie & the_cookie);

    virtual void postinvoke (
                             const ::PortableServer::ObjectId & /*oid*/,
                             ::PortableServer::POA_ptr /*adapter*/,
                             const char * /*operation*/,
                             ::PortableServer::ServantLocator::Cookie /*the_cookie*/,
                             ::PortableServer::Servant /*the_servant*/
                             );

    void start_register (const ACE_CString& plan);

    CORBA::Object_ptr register_object (const ACE_CString & plan
                                       , const ACE_CString & inst
                                       , const ACE_CString & port
                                       , CORBA::Object_ptr obj);

    CORBA::Object_ptr register_object (const ACE_CString & plan
                                       , const ACE_CString & inst
                                       , CORBA::Object_ptr obj);

    void unregister_object (const ACE_CString & plan
                            , const ACE_CString & inst
                            , const ACE_CString & port);

    void finish_register (const ACE_CString& plan);

    void register_objects (const char * name, TreeNode & node);

  private:
    TreeNode db_;
    CORBA::ORB_var orb_;
    PortableServer::POA_var myPOA_;

    TNodes transactions_;
    CCMObjectLocator() {};
    // to ban the usage
  }; // CCMObjectLocator

} //DAnCE

#endif /*CCMOBJECTLOCATOR_H_*/