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tablestream.hxx

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00001 /*-------------------------------------------------------------------------
00002  *
00003  *   FILE
00004  *      pqxx/tablestream.hxx
00005  *
00006  *   DESCRIPTION
00007  *      definition of the pqxx::tablestream class.
00008  *   pqxx::tablestream provides optimized batch access to a database table
00009  *   DO NOT INCLUDE THIS FILE DIRECTLY; include pqxx/tablestream instead.
00010  *
00011  * Copyright (c) 2001-2004, Jeroen T. Vermeulen <jtv@xs4all.nl>
00012  *
00013  * See COPYING for copyright license.  If you did not receive a file called
00014  * COPYING with this source code, please notify the distributor of this mistake,
00015  * or contact the author.
00016  *
00017  *-------------------------------------------------------------------------
00018  */
00019 #include <string>
00020 
00021 #include "pqxx/libcompiler.h"
00022 
00023 #include "pqxx/transaction_base"
00024 
00025 /* Methods tested in eg. self-test program test001 are marked with "//[t1]"
00026  */
00027 
00028 
00029 namespace pqxx
00030 {
00031 class transaction_base;
00032 
00033 
00035 
00043 class PQXX_LIBEXPORT tablestream : public internal::transactionfocus
00044 {
00045 public:
00046   tablestream(transaction_base &Trans, 
00047               const PGSTD::string &Name, 
00048               const PGSTD::string &Null=PGSTD::string(),
00049               const char Classname[]="tablestream");                    //[t6]
00050 
00051   virtual ~tablestream() throw () =0;                                   //[t6]
00052 
00054 
00061   virtual void complete() =0;
00062 
00063 #ifdef PQXX_DEPRECATED_HEADERS
00064 
00065   PGSTD::string Name() const { return name(); }
00066 #endif
00067 
00068 protected:
00069   const PGSTD::string &NullStr() const { return m_Null; }
00070   bool is_finished() const throw () { return m_Finished; }
00071   void base_close();
00072 
00074   template<typename ITER>
00075   static PGSTD::string columnlist(ITER colbegin, ITER colend);
00076 
00077 private:
00078   PGSTD::string m_Null;
00079   bool m_Finished;
00080 
00081   // Not allowed:
00082   tablestream();
00083   tablestream(const tablestream &);
00084   tablestream &operator=(const tablestream &);
00085 };
00086 
00087 
00088 template<typename ITER> inline
00089 PGSTD::string tablestream::columnlist(ITER colbegin, ITER colend)
00090 {
00091   return separated_list(",", colbegin, colend);
00092 }
00093 } // namespace pqxx
00094 

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