00001 #include <stdlib.h>
00002 #include <grass/dbmi.h>
00003 #include "dbstubs.h"
00004
00005
00006 static dbDriverState state;
00007
00008
00009 void
00010 db__init_driver_state(void)
00011 {
00012 db_zero((void *)&state, sizeof(state));
00013 }
00014
00015
00016 dbDriverState *
00017 db__get_driver_state(void)
00018 {
00019 return &state;
00020 }
00021
00022
00023 int
00024 db__test_database_open (void)
00025 {
00026 return state.open ? 1 : 0 ;
00027 }
00028
00029
00030 void
00031 db__mark_database_open (char *dbname, char *dbschema)
00032 {
00033 state.dbname = dbname;
00034 state.dbschema = dbschema;
00035 state.open = 1;
00036 }
00037
00038
00039 void
00040 db__mark_database_closed (void)
00041 {
00042 free(state.dbname);
00043 free(state.dbschema);
00044 state.open = 0;
00045 }
00046
00047
00048 void
00049 db__add_cursor_to_driver_state (dbCursor *cursor)
00050
00051 {
00052 dbCursor **list;
00053 int i;
00054
00055
00056 list = state.cursor_list;
00057 for (i = 0; i < state.ncursors; i++)
00058 if (list[i] == NULL)
00059 break;
00060
00061
00062 if (i >= state.ncursors)
00063 {
00064 list = (dbCursor **) db_realloc ((void *)list, (i+1) * sizeof(dbCursor *));
00065 if (list == NULL)
00066 return;
00067 state.cursor_list = list;
00068 state.ncursors = i+1;
00069 }
00070
00071
00072 list[i] = cursor;
00073 }
00074
00075
00076 void
00077 db__drop_cursor_from_driver_state(dbCursor *cursor)
00078 {
00079 int i;
00080
00081 for (i = 0; i < state.ncursors; i++)
00082 if (state.cursor_list[i] == cursor)
00083 state.cursor_list[i] = NULL;
00084 }
00085
00086
00087 void
00088 db__close_all_cursors(void)
00089 {
00090 int i;
00091
00092 for (i = 0; i < state.ncursors; i++)
00093 if (state.cursor_list[i])
00094 db_driver_close_cursor (state.cursor_list[i]);
00095
00096 if (state.cursor_list)
00097 free (state.cursor_list);
00098
00099 state.ncursors = 0;
00100 state.cursor_list = NULL;
00101 }