# connection.hxx

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    00001 /*-------------------------------------------------------------------------
    00002  *
    00003  *   FILE
    00004  *      pqxx/connection.hxx
    00005  *
    00006  *   DESCRIPTION
    00007  *      definition of the pqxx::connection and pqxx::lazyconnection classes.
    00008  *   Different ways of setting up a backend connection.
    00009  *   DO NOT INCLUDE THIS FILE DIRECTLY; include pqxx/connection instead.
    00010  *
    00011  * Copyright (c) 2001-2006, 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 "pqxx/compiler-public.hxx"
    00020 #include "pqxx/compiler-internal-pre.hxx"
    00021
    00022 #include "pqxx/connectionpolicy"
    00023 #include "pqxx/basic_connection"
    00024
    00025 namespace pqxx
    00026 {
    00027
    00070
    00071
    00081 class PQXX_LIBEXPORT connect_direct : public connectionpolicy
    00082 {
    00083 public:
    00084   explicit connect_direct(const PGSTD::string &opts) : connectionpolicy(opts) {}
    00085   virtual handle do_startconnect(handle);
    00086 };
    00087
    00089 typedef basic_connection<connect_direct> connection;
    00090
    00091
    00093
    00097 class PQXX_LIBEXPORT connect_lazy : public connectionpolicy
    00098 {
    00099 public:
    00100   explicit connect_lazy(const PGSTD::string &opts) : connectionpolicy(opts) {}
    00101   virtual handle do_completeconnect(handle);
    00102 };
    00103
    00104
    00106 typedef basic_connection<connect_lazy> lazyconnection;
    00107
    00108
    00110
    00116 class PQXX_LIBEXPORT connect_async : public connectionpolicy
    00117 {
    00118 public:
    00119   explicit connect_async(const PGSTD::string &opts);
    00120   virtual handle do_startconnect(handle);
    00121   virtual handle do_completeconnect(handle);
    00122   virtual handle do_dropconnect(handle) throw ();
    00123   virtual bool is_ready(handle) const throw ();
    00124
    00125 private:
    00127   bool m_connecting;
    00128 };
    00129
    00130
    00132 typedef basic_connection<connect_async> asyncconnection;
    00133
    00134
    00136
    00141 class PQXX_LIBEXPORT connect_null  : public connectionpolicy
    00142 {
    00143 public:
    00144   explicit connect_null(const PGSTD::string &opts) : connectionpolicy(opts) {}
    00145 };
    00146
    00147
    00149 typedef basic_connection<connect_null> nullconnection;
    00150
    00155 }
    00156
    00157 #include "pqxx/compiler-internal-post.hxx"