tomasz.sowa/morm
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added Cursor class

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git-svn-id: svn://ttmath.org/publicrep/morm/trunk@1140 e52654a7-88a9-db11-a3e9-0013d4bc506e
This commit is contained in:
Tomasz Sowa
2018-11-14 17:14:26 +00:00
parent 011d8f96e8
commit 1f9e4ee70a
16 changed files with 1108 additions and 802 deletions
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122
src/postgresqlconnector.h
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@@ -35,9 +35,10 @@
#ifndef headerfile_morm_postgresqlconnector
#define headerfile_morm_postgresqlconnector
#include "dbconnector.h"
#include <libpq-fe.h>
#include <string>
#include "dbconnector.h"
#include "postgresqlqueryresult.h"
@@ -49,85 +50,42 @@ class PostgreSQLConnector : public DbConnector
public:
PostgreSQLConnector();
PostgreSQLConnector(const PostgreSQLConnector &) = delete;
virtual ~PostgreSQLConnector();
void clear_all_query_results();
void clear_last_query_result();
virtual void set_log_queries(bool log_queries);
// give me a better names
virtual size_t last_select_size();
virtual ExecStatusType last_query_status();
virtual bool is_last_result(ExecStatusType t); // was: is_last_result
bool query(const PT::TextStream & stream, QueryResult & query_result);
bool query(const char * query_str, QueryResult & query_result);
bool query(const std::string & query_str, QueryResult & query_result);
virtual std::wstring get_last_query_error_msg();
virtual void set_last_query_error_msg(const char * error_msg);
virtual void set_last_query_error_msg(const wchar_t * error_msg);
bool query_select(const char * query_str, QueryResult & query_result);
bool query_update(const char * query_str, QueryResult & query_result);
bool query_insert(const char * query_str, QueryResult & query_result);
bool query_remove(const char * query_str, QueryResult & query_result);
virtual bool was_error_in_last_query();
virtual void set_was_error_in_last_query(bool was_error);
void set_log_queries(bool log_queries);
bool query(const PT::TextStream & stream);
bool query(const char * query_str);
bool query(const std::string & query_str);
bool query_select(const char * query_str);
bool query_update(const char * query_str);
bool query_insert(const char * query_str);
bool query_remove(const char * query_str);
bool query_select(const PT::TextStream & stream);
bool query_update(const PT::TextStream & stream);
bool query_insert(const PT::TextStream & stream);
bool query_remove(const PT::TextStream & stream);
bool query_select(const PT::TextStream & stream, QueryResult & query_result);
bool query_update(const PT::TextStream & stream, QueryResult & query_result);
bool query_insert(const PT::TextStream & stream, QueryResult & query_result);
bool query_remove(const PT::TextStream & stream, QueryResult & query_result);
// give me a better name
virtual void set_current_row_at_beginning();
virtual void advance_current_row();
virtual void set_conn_param(const std::wstring & database, const std::wstring & user, const std::wstring & pass);
virtual void connect();
virtual void wait_for_connection();
virtual void close();
//virtual bool assert_connection(bool put_log = true, bool throw_if_no_connection = true);
virtual bool assert_connection(bool put_log = true);
virtual void set_db_parameters();
virtual void log_connection_socket();
/*
* get column index from the last query (select)
* returns -1 if there is no such a column
*
*/
int get_column_index(const char * column_name);
int get_column_index(const wchar_t * column_name);
bool is_null(int row, int col);
/*
* return an item from the last query
* can return a null pointer if there is no such an item in the last result
*
*/
const char * get_value_from_result(int row, int col);
int get_value_length(int row, int col);
void set_conn_param(const std::wstring & database, const std::wstring & user, const std::wstring & pass);
void connect();
void wait_for_connection();
void close();
//bool assert_connection(bool put_log = true, bool throw_if_no_connection = true);
bool assert_connection(bool put_log = true);
void set_db_parameters();
void log_connection_socket();
//PGconn * GetPgConn();
protected:
PGconn * pg_conn;
// PGresult * last_result; // can be null
// size_t last_result_rows; // how many rows in the last result query
// ExecStatusType last_status;
bool log_queries;
PT::TextStream stream;
std::string query_str;
@@ -137,35 +95,13 @@ protected:
std::wstring db_user;
std::wstring db_pass;
struct QueryResult
{
PGresult * result; // can be null
size_t result_rows; // how many rows in the result query
ExecStatusType status;
size_t cur_row; // used for reading
bool was_error;
std::wstring error_msg;
QueryResult()
{
result = nullptr;
result_rows = 0;
status = PGRES_EMPTY_QUERY;
cur_row = 0;
was_error = false;
}
};
std::vector<QueryResult> query_results;
virtual bool do_query(const char * query_str, PostgreSQLQueryResult * psql_result);
virtual void allocate_default_expression();
virtual void overwrite(PT::TextStream & stream);
virtual const char * query_last_sequence(const wchar_t * sequence_table_name);
virtual QueryResult * create_query_result();
void allocate_default_expression();
void overwrite(PT::TextStream & stream);
virtual const char * get_field_string_value(const char * column_name);
virtual const char * get_field_string_value(const wchar_t * field_name);
virtual void set_last_query_error_msg();
const char * query_last_sequence(const wchar_t * sequence_table_name);
};
}