CAVERNdb_sharedState_c.hxx Source File

00001 
00002 /******************************************************************
00003  * CAVERNsoft
00004  * Copyright (C) 1994-2000 Electronic Visualization Laboratory,
00005  * all rights reserved
00006  * By Jason Leigh, Yong-joo Cho, Naveen Krishnaprasad, Chris Scharver,
00007  * Stuart Bailey, Atul Nayak, Shalini Venkataraman
00008  * University of Illinois at Chicago
00009  * 
00010  * This publication and its text and code may not be copied for commercial 
00011  * use without the express written permission of the University of Illinois
00012  * at Chicago
00013  * The contributors disclaim any representation of warranty: use this
00014  * code at your own risk.
00015  * Direct questions, comments etc to cavern@evl.uic.edu
00016  ******************************************************************/
00017 #ifndef _CAVERNDB_SHAREDSTATE_C_HXX
00018 #define _CAVERNDB_SHAREDSTATE_C_HXX
00019 
00020 #include <CAVERN.hxx>
00021 
00046 class CAVERNdb_sharedState_c : public CAVERNmisc_observer_c
00047 {
00048         public:
00050                 CAVERNdb_sharedState_c();
00051 
00062                 CAVERNdb_sharedState_c( CAVERNdb_client_c *dbclient, char *path, char *key );
00064                 virtual ~CAVERNdb_sharedState_c();
00066                 inline bool isSharingEnabled() { return _sharingEnabled; }
00068                 inline void enableSharing() { _sharingEnabled = true; }
00070                 inline void disableSharing() { _sharingEnabled = false; }
00075                 int refresh();
00076                 virtual void update( CAVERNmisc_subject_c *subj );
00077 
00078         protected:
00086                 virtual int packAndSendState() = 0;
00096                 virtual int unpackState( char *data ) = 0;
00097 
00098         protected:
00100                 CAVERNnet_datapack_c _packer;
00102                 CAVERNdb_client_c *_dbclient;
00104                 bool _sharingEnabled;
00106                 char *_path;
00108                 char *_key;
00109 };
00110 
00111 #endif