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Fix bug 588212 – PgSql: Pop-up dialog for overwriting db contents even with blank database

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When you ask for the tables in a postgres db, postgres returns 7 tables which are in the information
schema.  These tables need to be filtered out when gnucash checks whether the db is empty or not.


git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@18209 57a11ea4-9604-0410-9ed3-97b8803252fd
This commit is contained in:
Phil Longstaff 2009-07-14 21:33:24 +00:00
parent 5318f379fd
commit cd8819cf07
1 changed files with 97 additions and 43 deletions
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140
src/backend/dbi/gnc-backend-dbi.c
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@ -68,39 +68,46 @@ typedef gchar* (*CREATE_TABLE_DDL_FN)( GncSqlConnection* conn,
const gchar* table_name,
const GList* col_info_list );
typedef const gchar* (*GET_COLUMN_TYPE_NAME_FN)( GType type, gint size );
typedef GSList* (*GET_TABLE_LIST_FN)( dbi_conn conn, const gchar* dbname );
typedef struct {
CREATE_TABLE_DDL_FN create_table_ddl;
GET_COLUMN_TYPE_NAME_FN get_column_type_name;
GET_TABLE_LIST_FN get_table_list;
} provider_functions_t;
static /*@ null @*/ gchar* conn_create_table_ddl_sqlite3( GncSqlConnection* conn,
const gchar* table_name,
const GList* col_info_list );
static /*@ observer @*/ const gchar* sqlite3_get_column_type_name( GType type, gint size );
static /*@ observer @*/ const gchar* get_column_type_name_sqlite3( GType type, gint size );
static GSList* conn_get_table_list( dbi_conn conn, const gchar* dbname );
static provider_functions_t provider_sqlite3 =
{
conn_create_table_ddl_sqlite3,
sqlite3_get_column_type_name
get_column_type_name_sqlite3,
conn_get_table_list
};
static /*@ null @*/ gchar* conn_create_table_ddl_mysql( GncSqlConnection* conn,
const gchar* table_name,
const GList* col_info_list );
static /*@ observer @*/ const gchar* mysql_get_column_type_name( GType type, gint size );
static /*@ observer @*/ const gchar* get_column_type_name_mysql( GType type, gint size );
static provider_functions_t provider_mysql =
{
conn_create_table_ddl_mysql,
mysql_get_column_type_name
get_column_type_name_mysql,
conn_get_table_list
};
static /*@ null @*/ gchar* conn_create_table_ddl_pgsql( GncSqlConnection* conn,
const gchar* table_name,
const GList* col_info_list );
static /*@ observer @*/ const gchar* pgsql_get_column_type_name( GType type, gint size );
static /*@ observer @*/ const gchar* get_column_type_name_pgsql( GType type, gint size );
static GSList* conn_get_table_list_pgsql( dbi_conn conn, const gchar* dbname );
static provider_functions_t provider_pgsql =
{
conn_create_table_ddl_pgsql,
pgsql_get_column_type_name
get_column_type_name_pgsql,
conn_get_table_list_pgsql
};
static /*@ null @*/ gchar* create_index_ddl( GncSqlConnection* conn,
@ -132,6 +139,15 @@ struct GncDbiBackend_struct
};
typedef struct GncDbiBackend_struct GncDbiBackend;
typedef struct
{
GncSqlConnection base;
/*@ observer @*/ QofBackend* qbe;
/*@ observer @*/ dbi_conn conn;
/*@ observer @*/ provider_functions_t* provider;
} GncDbiSqlConnection;
/* ================================================================= */
static void
@ -626,18 +642,16 @@ gnc_dbi_save_may_clobber_data( QofBackend* qbe )
{
GncDbiBackend* be = (GncDbiBackend*)qbe;
const gchar* dbname;
dbi_result tables;
unsigned long long numTables;
GSList* table_name_list;
gint numTables = 0;
gint status;
/* Data may be clobbered iff the number of tables != 0 */
dbname = dbi_conn_get_option( be->conn, "dbname" );
tables = dbi_conn_get_table_list( be->conn, dbname, NULL );
numTables = dbi_result_get_numrows( tables );
status = dbi_result_free( tables );
if( status < 0 ) {
PERR( "Error in dbi_result_free() result\n" );
qof_backend_set_error( qbe, ERR_BACKEND_SERVER_ERR );
table_name_list = ((GncDbiSqlConnection*)(be->sql_be.conn))->provider->get_table_list( be->conn, dbname );
if( table_name_list != NULL ) {
numTables = g_slist_length( table_name_list );
g_slist_free( table_name_list );
}
return (numTables != 0);
@ -647,7 +661,7 @@ static void
gnc_dbi_sync_all( QofBackend* qbe, /*@ dependent @*/ QofBook *book )
{
GncDbiBackend* be = (GncDbiBackend*)qbe;
dbi_result tables;
GSList* table_name_list;
const gchar* dbname;
gint status;
@ -658,25 +672,24 @@ gnc_dbi_sync_all( QofBackend* qbe, /*@ dependent @*/ QofBook *book )
/* Destroy the current contents of the database */
dbname = dbi_conn_get_option( be->conn, "dbname" );
tables = dbi_conn_get_table_list( be->conn, dbname, NULL );
while( dbi_result_next_row( tables ) != 0 ) {
const gchar* table_name;
dbi_result result;
table_name_list = ((GncDbiSqlConnection*)(be->sql_be.conn))->provider->get_table_list( be->conn, dbname );
if( table_name_list != NULL ) {
GSList* node;
table_name = dbi_result_get_string_idx( tables, 1 );
result = dbi_conn_queryf( be->conn, "DROP TABLE %s", table_name );
if( result != NULL ) {
status = dbi_result_free( result );
if( status < 0 ) {
PERR( "Error in dbi_result_free() result\n" );
qof_backend_set_error( qbe, ERR_BACKEND_SERVER_ERR );
for( node = table_name_list; node != NULL; node = node->next ) {
const gchar* table_name = (const gchar*)node->data;
dbi_result result;
result = dbi_conn_queryf( be->conn, "DROP TABLE %s", table_name );
if( result != NULL ) {
status = dbi_result_free( result );
if( status < 0 ) {
PERR( "Error in dbi_result_free() result\n" );
qof_backend_set_error( qbe, ERR_BACKEND_SERVER_ERR );
}
}
}
}
status = dbi_result_free( tables );
if( status < 0 ) {
PERR( "Error in dbi_result_free() result\n" );
qof_backend_set_error( qbe, ERR_BACKEND_SERVER_ERR );
g_slist_free( table_name_list );
}
/* Save all contents */
@ -1015,15 +1028,6 @@ create_dbi_row( /*@ dependent @*/ dbi_result result )
return (GncSqlRow*)row;
}
/* --------------------------------------------------------- */
typedef struct
{
GncSqlConnection base;
/*@ observer @*/ QofBackend* qbe;
/*@ observer @*/ dbi_conn conn;
/*@ observer @*/ provider_functions_t* provider;
} GncDbiSqlConnection;
typedef struct
{
GncSqlResult base;
@ -1342,7 +1346,7 @@ conn_commit_transaction( /*@ unused @*/ GncSqlConnection* conn )
}
static /*@ observer @*/ const gchar*
sqlite3_get_column_type_name( GType type, /*@ unused @*/ gint size )
get_column_type_name_sqlite3( GType type, /*@ unused @*/ gint size )
{
switch( type ) {
case G_TYPE_INT:
@ -1364,7 +1368,7 @@ sqlite3_get_column_type_name( GType type, /*@ unused @*/ gint size )
}
static /*@ observer @*/ const gchar*
mysql_get_column_type_name( GType type, /*@ unused @*/ gint size )
get_column_type_name_mysql( GType type, /*@ unused @*/ gint size )
{
switch( type ) {
case G_TYPE_INT:
@ -1386,7 +1390,7 @@ mysql_get_column_type_name( GType type, /*@ unused @*/ gint size )
}
static /*@ observer @*/ const gchar*
pgsql_get_column_type_name( GType type, /*@ unused @*/ gint size )
get_column_type_name_pgsql( GType type, /*@ unused @*/ gint size )
{
switch( type ) {
case G_TYPE_INT:
@ -1649,6 +1653,56 @@ conn_quote_string( const GncSqlConnection* conn, gchar* unquoted_str )
}
}
static GSList*
conn_get_table_list( dbi_conn conn, const gchar* dbname )
{
dbi_result tables;
GSList* list = NULL;
tables = dbi_conn_get_table_list( conn, dbname, NULL );
while( dbi_result_next_row( tables ) != 0 ) {
const gchar* table_name;
dbi_result result;
table_name = dbi_result_get_string_idx( tables, 1 );
list = g_slist_prepend( list, strdup( table_name ) );
}
dbi_result_free( tables );
return list;
}
static GSList*
conn_get_table_list_pgsql( dbi_conn conn, const gchar* dbname )
{
gboolean change_made;
/* Return the list, but remove the tables that postgresql adds from the information schema. */
GSList* list = conn_get_table_list( conn, dbname );
change_made = TRUE;
while( list != NULL && change_made ) {
GSList* node;
change_made = FALSE;
for( node = list; node != NULL; node = node->next ) {
const gchar* table_name = (const gchar*)node->data;
if( strcmp( table_name, "sql_features" ) == 0 ||
strcmp( table_name, "sql_implementation_info" ) == 0 ||
strcmp( table_name, "sql_languages" ) == 0 ||
strcmp( table_name, "sql_packages" ) == 0 ||
strcmp( table_name, "sql_parts" ) == 0 ||
strcmp( table_name, "sql_sizing" ) == 0 ||
strcmp( table_name, "sql_sizing_profiles" ) == 0 ) {
g_free( node->data );
list = g_slist_delete_link( list, node );
change_made = TRUE;
break;
}
}
}
return list;
}
static GncSqlConnection*
create_dbi_connection( /*@ observer @*/ provider_functions_t* provider,
/*@ observer @*/ QofBackend* qbe,