source/dbms/Delivery.cpp

   1 // ANNA - Anna is Not Nothingness Anymore                                                         //
   2 //                                                                                                //
   3 // (c) Copyright 2005-2015 Eduardo Ramos Testillano & Francisco Ruiz Rayo                         //
   4 //                                                                                                //
   5 // See project site at http://redmine.teslayout.com/projects/anna-suite                           //
   6 // See accompanying file LICENSE or copy at http://www.teslayout.com/projects/public/anna.LICENSE //
   7
   8
   9 #include <anna/core/tracing/TraceMethod.hpp>
  10 #include <anna/core/functions.hpp>
  11
  12 #include <anna/dbms/Database.hpp>
  13 #include <anna/dbms/Delivery.hpp>
  14 #include <anna/dbms/Connection.hpp>
  15
  16 using namespace std;
  17 using namespace anna;
  18
  19 void  dbms::Delivery::createConnections(dbms::Database& database, const char* prefixName, const char* user, const char* password, const int n)
  20 throw(RuntimeException, dbms::DatabaseException) {
  21   string name;
  22
  23   for(int i = 0; i < n;  i ++) {
  24     name = prefixName;
  25     name += functions::asString("%04d", i);
  26     this->add(database.createConnection(name.c_str(), user, password));
  27   }
  28
  29   a_iiConnection = this->begin();
  30 }
  31
  32 dbms::Connection& dbms::Delivery::getConnection()
  33 throw(RuntimeException) {
  34   return *(static_cast <dbms::Connection*>(comm::Delivery::apply()));
  35 }
  36
  37 //--------------------------------------------------------------------------------------------------
  38 // Se invoca desde la seccion critica establecida en comm::Delivery::apply.
  39 //
  40 // (0) Si no hay registrada ninguna conexion
  41 //--------------------------------------------------------------------------------------------------
  42 comm::Resource* dbms::Delivery::do_apply()
  43 throw(RuntimeException) {
  44   iterator maxii = end();
  45
  46   if(a_iiConnection == maxii)                                          // (0)
  47     return NULL;
  48
  49   iterator init = a_iiConnection;
  50   Connection* result = NULL;
  51   Connection* w;
  52
  53   do {
  54     w = connection(a_iiConnection);
  55
  56     if(a_iiConnection == maxii)
  57       a_iiConnection = begin();
  58
  59     if(w->isAvailable() == true && w->isEnabled() == true) {
  60       result = w;
  61       break;
  62     }
  63   } while(a_iiConnection != init);
  64
  65   return result;
  66 }