LCOV - code coverage report
Current view: top level - libgnucash/backend/sql - gnc-sql-connection.hpp (source / functions) Coverage Total Hit
Test: gnucash.info Lines: 0.0 % 2 0
Test Date: 2025-02-07 16:25:45 Functions: 0.0 % 2 0
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             Branch data     Line data    Source code
       1                 :             : /***********************************************************************\
       2                 :             :  * gnc-sql-connection.hpp: Encapsulate a SQL database connection.      *
       3                 :             :  *                                                                     *
       4                 :             :  * Copyright 2016 John Ralls <jralls@ceridwen.us>                      *
       5                 :             :  *                                                                     *
       6                 :             :  * This program is free software; you can redistribute it and/or       *
       7                 :             :  * modify it under the terms of the GNU General Public License as      *
       8                 :             :  * published by the Free Software Foundation; either version 2 of      *
       9                 :             :  * the License, or (at your option) any later version.                 *
      10                 :             :  *                                                                     *
      11                 :             :  * This program is distributed in the hope that it will be useful,     *
      12                 :             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of      *
      13                 :             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the       *
      14                 :             :  * GNU General Public License for more details.                        *
      15                 :             :  *                                                                     *
      16                 :             :  * You should have received a copy of the GNU General Public License   *
      17                 :             :  * along with this program; if not, contact:                           *
      18                 :             :  *                                                                     *
      19                 :             :  * Free Software Foundation           Voice:  +1-617-542-5942          *
      20                 :             :  * 51 Franklin Street, Fifth Floor    Fax:    +1-617-542-2652          *
      21                 :             :  * Boston, MA  02110-1301,  USA       gnu@gnu.org                      *
      22                 :             : \***********************************************************************/
      23                 :             : 
      24                 :             : #ifndef __GNC_SQL_CONNECTION_HPP__
      25                 :             : #define __GNC_SQL_CONNECTION_HPP__
      26                 :             : 
      27                 :             : #include <qof.h>
      28                 :             : #include <memory>
      29                 :             : #include <string>
      30                 :             : #include <vector>
      31                 :             : 
      32                 :             : class GncSqlResult;
      33                 :             : using GncSqlResultPtr = GncSqlResult*;
      34                 :             : class GncSqlColumnTableEntry;
      35                 :             : using GncSqlColumnTableEntryPtr = std::shared_ptr<GncSqlColumnTableEntry>;
      36                 :             : using EntryVec = std::vector<GncSqlColumnTableEntryPtr>;
      37                 :             : using PairVec = std::vector<std::pair<std::string, std::string>>;
      38                 :             : struct GncSqlColumnInfo;
      39                 :             : using ColVec = std::vector<GncSqlColumnInfo>;
      40                 :             : 
      41                 :             : /**
      42                 :             :  * SQL statement provider.
      43                 :             :  */
      44                 :             : class GncSqlStatement
      45                 :             : {
      46                 :             : public:
      47                 :           0 :     virtual ~GncSqlStatement() {}
      48                 :             :     virtual const char* to_sql() const = 0;
      49                 :             :     virtual void add_where_cond (QofIdTypeConst, const PairVec&) = 0;
      50                 :             : };
      51                 :             : 
      52                 :             : using GncSqlStatementPtr = std::unique_ptr<GncSqlStatement>;
      53                 :             : 
      54                 :             : /**
      55                 :             :  * Encapsulate the connection to the database. This is an abstract class; the
      56                 :             :  * implementation is database-specific.
      57                 :             :  */
      58                 :             : class GncSqlConnection
      59                 :             : {
      60                 :             : public:
      61                 :             :     /** Returns NULL if error */
      62                 :           0 :     virtual ~GncSqlConnection() = default;
      63                 :             :     virtual GncSqlResultPtr execute_select_statement (const GncSqlStatementPtr&)
      64                 :             :         noexcept = 0;
      65                 :             :     /** Returns false if error */
      66                 :             :     virtual int execute_nonselect_statement (const GncSqlStatementPtr&)
      67                 :             :         noexcept = 0;
      68                 :             :     virtual GncSqlStatementPtr create_statement_from_sql (const std::string&)
      69                 :             :         const noexcept = 0;
      70                 :             :     /** Returns true if successful */
      71                 :             :     virtual bool does_table_exist (const std::string&) const noexcept = 0;
      72                 :             :     /** Returns TRUE if successful, false if error */
      73                 :             :     virtual bool begin_transaction () noexcept = 0;
      74                 :             :     /** Returns TRUE if successful, FALSE if error */
      75                 :             :     virtual bool rollback_transaction () noexcept = 0;
      76                 :             :     /** Returns TRUE if successful, FALSE if error */
      77                 :             :     virtual bool commit_transaction () noexcept = 0;
      78                 :             :     /** Returns TRUE if successful, FALSE if error */
      79                 :             :     virtual bool create_table (const std::string&, const ColVec&)
      80                 :             :         const noexcept = 0;
      81                 :             :     /** Returns TRUE if successful, FALSE if error */
      82                 :             :     virtual bool create_index (const std::string&, const std::string&,
      83                 :             :                                const EntryVec&) const noexcept = 0;
      84                 :             :     /** Returns TRUE if successful, FALSE if error */
      85                 :             :     virtual bool add_columns_to_table (const std::string&, const ColVec&)
      86                 :             :         const noexcept = 0;
      87                 :             :     virtual std::string quote_string (const std::string&)
      88                 :             :         const noexcept = 0;
      89                 :             :     /** Get the connection error value.
      90                 :             :      * If not 0 will normally be meaningless outside of implementation code.
      91                 :             :      */
      92                 :             :     virtual int dberror() const noexcept = 0;
      93                 :             :     virtual void set_error(QofBackendError error, unsigned int repeat,
      94                 :             :                            bool retry) noexcept = 0;
      95                 :             :     virtual bool verify() noexcept = 0;
      96                 :             :     virtual bool retry_connection(const char* msg) noexcept = 0;
      97                 :             : 
      98                 :             : };
      99                 :             : 
     100                 :             : 
     101                 :             : #endif //__GNC_SQL_CONNECTION_HPP__
        

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