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) 2001-2008, 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 #ifndef PQXX_H_TABLESTREAM
00020 #define PQXX_H_TABLESTREAM
00021 
00022 #include "pqxx/compiler-public.hxx"
00023 #include "pqxx/compiler-internal-pre.hxx"
00024 
00025 #include "pqxx/transaction_base"
00026 
00027 /* Methods tested in eg. self-test program test001 are marked with "//[t1]"
00028  */
00029 
00030 
00031 namespace pqxx
00032 {
00033 class transaction_base;
00034 
00035 
00037 
00046 class PQXX_LIBEXPORT PQXX_NOVTABLE tablestream :
00047   public internal::transactionfocus
00048 {
00049 public:
00050   explicit tablestream(transaction_base &Trans,
00051               const PGSTD::string &Null=PGSTD::string());               //[t6]
00052 
00053   virtual ~tablestream() throw () =0;                                   //[t6]
00054 
00056 
00063   virtual void complete() =0;
00064 
00065 protected:
00066   const PGSTD::string &NullStr() const { return m_Null; }
00067   bool is_finished() const throw () { return m_Finished; }
00068   void base_close();
00069 
00071   template<typename ITER>
00072   static PGSTD::string columnlist(ITER colbegin, ITER colend);
00073 
00074 private:
00075   PGSTD::string m_Null;
00076   bool m_Finished;
00077 
00078   // Not allowed:
00079   tablestream();
00080   tablestream(const tablestream &);
00081   tablestream &operator=(const tablestream &);
00082 };
00083 
00084 
00085 template<typename ITER> inline
00086 PGSTD::string tablestream::columnlist(ITER colbegin, ITER colend)
00087 {
00088   return separated_list(",", colbegin, colend);
00089 }
00090 } // namespace pqxx
00091 
00092 #include "pqxx/compiler-internal-post.hxx"
00093 
00094 #endif
00095 

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