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290978fff0
libpq++.h contained copies of the class declarations in the other libpq++ include files, which was bogus enough, but the declarations were not completely in step with the real declarations. Remove these in favor of including the headers with #include. Make PgConnection destructor virtual (not absolutely necessary, but seems like a real good idea considering the number of subclasses derived from it). Give all classes declared private copy constructors and assignment operators, to prevent compiler from thinking it can copy these objects safely.
95 lines
2.6 KiB
C++
95 lines
2.6 KiB
C++
/*-------------------------------------------------------------------------
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*
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* pgconnection.h
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*
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*
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* DESCRIPTION
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* Postgres Connection Class:
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* Manage Postgres backend connection
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*
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* NOTES
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* Currently under construction.
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*
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* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $Id: pgconnection.h,v 1.7 2000/04/22 22:39:15 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PGCONNECTION_H
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#define PGCONNECTION_H
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extern "C" {
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#include "config.h"
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}
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/* We assume that the C++ compiler will have these keywords, even though
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* config.h may have #define'd them to empty because C compiler doesn't.
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*/
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#undef const
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#undef inline
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#undef signed
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#undef volatile
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#ifdef HAVE_CXX_STRING_HEADER
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#include <string>
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#endif
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extern "C" {
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#include "postgres.h"
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#include "libpq-fe.h"
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}
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#ifdef HAVE_NAMESPACE_STD
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using namespace std;
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#endif
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// ****************************************************************
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//
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// PgConnection - a connection made to a postgres backend
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//
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// ****************************************************************
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// This class contains all the information about the connection
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// to the backend process. All the database classes should be
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// derived from this class to obtain the connection interface.
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class PgConnection {
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protected:
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PGconn* pgConn; // Connection Structure
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PGresult* pgResult; // Current Query Result
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int pgCloseConnection; // TRUE if connection should be closed by destructor
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public:
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PgConnection(const char* conninfo); // use reasonable & environment defaults
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virtual ~PgConnection(); // close connection and clean up
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// Connection status and error messages
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ConnStatusType Status();
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int ConnectionBad();
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const char* ErrorMessage();
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// returns the database name of the connection
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const char* DBName();
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// Query Execution interface
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ExecStatusType Exec(const char* query); // send a query to the backend
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int ExecCommandOk(const char* query); // send a command and check if it's OK
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int ExecTuplesOk(const char* query); // send a command and check if tuples are returned
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PGnotify* Notifies();
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protected:
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ConnStatusType Connect(const char* conninfo);
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string IntToString(int);
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// Default constructor is only available to subclasses
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PgConnection();
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private:
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// We don't support copying of PgConnection objects,
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// so make copy constructor and assignment op private.
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PgConnection(const PgConnection&);
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PgConnection& operator= (const PgConnection&);
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};
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#endif // PGCONNECTION_H
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