int lodbc_environment_create(lua_State *L, SQLHENV henv, uchar own){
lodbc_env *env;
uchar is_new = 0;
if(henv == SQL_NULL_HANDLE){
SQLRETURN ret = SQLAllocHandle(hENV, SQL_NULL_HANDLE, &henv);
if (lodbc_iserror(ret))
return lodbc_faildirect(L, "error creating environment.");
own = 1;
is_new = 1;
}
env = lutil_newudatap(L, lodbc_env, LODBC_ENV);
memset(env, 0, sizeof(lodbc_env));
if(!own)env->flags |= LODBC_FLAG_DONT_DESTROY;
env->handle = henv;
if(is_new){
int top = lua_gettop(L);
SQLRETURN ret = env_set_uint_attr_(L, env, SQL_ATTR_ODBC_VERSION, LODBC_ODBC3_C(SQL_OV_ODBC3, SQL_OV_ODBC2) );
if(lodbc_is_fail(L,ret)){
SQLFreeHandle (hENV, henv);
env->flags &= ~LODBC_FLAG_DESTROYED;
return ret;
}
lua_settop(L, top);
}
return 1;
}
/*
** Retrieves data from the i_th column in the current row
** Input
** types: index in sack of column types table
** hstmt: statement handle
** i: column number
** Returns:
** 0 if successfull, non-zero otherwise;
*/
int lodbc_push_column(lua_State *L, int coltypes, const SQLHSTMT hstmt, SQLUSMALLINT i) {
const char *tname;
char type;
lua_rawgeti (L, coltypes, i); /* typename of the column */
tname = lua_tostring(L, -1);
if (!tname) return lodbc_faildirect(L, "invalid type in table.");
type = tname[1];
lua_pop(L, 1); /* pops type name */
return lodbc_push_column_value(L,hstmt,i,type);
}
int lodbc_set_str_attr_(lua_State*L, SQLSMALLINT HandleType, SQLHANDLE Handle,
SQLINTEGER optnum, const char* value, size_t len)
{
SQLRETURN ret;
#if (LODBC_ODBCVER >= 0x0300)
ret = select_set_attr_v3(HandleType)(Handle,optnum,(SQLPOINTER)value,len);
#else
if(HandleType == hENV) return lodbc_faildirect(L, "not supported.");
ret = select_set_attr (HandleType)(Handle,optnum,(SQLUINTEGER)value);
#endif
if(lodbc_iserror(ret)) return lodbc_fail(L, HandleType, Handle);
return lodbc_pass(L);
}
int lodbc_get_uint_attr_(lua_State*L, SQLSMALLINT HandleType, SQLHANDLE Handle, SQLINTEGER optnum){
SQLUINTEGER res;
SQLRETURN ret;
#if (LODBC_ODBCVER >= 0x0300)
SQLINTEGER dummy;
ret = select_get_attr_v3(HandleType)(Handle, optnum, (SQLPOINTER)&res, sizeof(res), &dummy);
#else
if(HandleType == hENV) return lodbc_faildirect(L, "not supported.");
ret = select_get_attr (HandleType)(Handle, optnum, (SQLPOINTER)&res);
#endif
if(ret == LODBC_ODBC3_C(SQL_NO_DATA,SQL_NO_DATA_FOUND)) return 0;
if(lodbc_iserror(ret)) return lodbc_fail(L, HandleType, Handle);
lua_pushnumber(L,res);
return 1;
}
int lodbc_get_str_attr_(lua_State*L, SQLSMALLINT HandleType, SQLHANDLE Handle, SQLINTEGER optnum){
#if (LODBC_ODBCVER >= 0x0300)
SQLINTEGER got;
char buffer[256];
#else
char buffer[SQL_MAX_OPTION_STRING_LENGTH+1];
#endif
SQLRETURN ret;
#if (LODBC_ODBCVER >= 0x0300)
ret = select_get_attr_v3(HandleType)(Handle, optnum, (SQLPOINTER)buffer, 255, &got);
#else
if(HandleType == hENV) return lodbc_faildirect(L, "not supported.");
ret = select_get_attr (HandleType)(Handle, optnum, (SQLPOINTER)&buffer);
#endif
if(ret == LODBC_ODBC3_C(SQL_NO_DATA,SQL_NO_DATA_FOUND)) return 0;
if(lodbc_iserror(ret)) return lodbc_fail(L, HandleType, Handle);
#if (LODBC_ODBCVER >= 0x0300)
if(got > 255){
char* tmp = malloc(got+1);
if(!tmp)
return LODBC_ALLOCATE_ERROR(L);
ret = select_get_attr_v3(HandleType)(Handle, optnum, (SQLPOINTER)tmp, got, &got);
if(lodbc_iserror(ret)){
free(tmp);
if(ret == SQL_NO_DATA) return 0;
return lodbc_fail(L, HandleType, Handle);
}
lua_pushstring(L, tmp);
free(tmp);
}
else
#endif
lua_pushstring(L, buffer);
return 1;
}
int lodbc_environment_create(lua_State *L, SQLHENV henv, uchar own) {
lodbc_env *env;
uchar is_new = 0;
if(henv == SQL_NULL_HANDLE) {
SQLRETURN ret = SQLAllocHandle(hENV, SQL_NULL_HANDLE, &henv);
if (lodbc_iserror(ret))
return lodbc_faildirect(L, "error creating environment.");
own = 1;
is_new = 1;
}
env = lutil_newudatap(L, lodbc_env, LODBC_ENV);
memset(env, 0, sizeof(lodbc_env));
if(!own)env->flags |= LODBC_FLAG_DONT_DESTROY;
env->handle = henv;
env->conn_list_ref = LUA_NOREF;
if(LODBC_OPT_INT(ENV_AUTOCLOSECNN)) {
int top = lua_gettop(L);
lua_pushvalue(L, -1);
lua_pushboolean(L, 1);
lodbc_pcall_method(L, "setautoclosecnn", 1, 0, 0);
lua_settop(L, top);
}
if(is_new) {
int top = lua_gettop(L);
SQLRETURN ret = env_set_uint_attr_(L, env, SQL_ATTR_ODBC_VERSION, LODBC_ODBC3_C(SQL_OV_ODBC3, SQL_OV_ODBC2) );
if(lodbc_is_fail(L,ret)) {
SQLFreeHandle (hENV, henv);
env->flags &= ~LODBC_FLAG_DESTROYED;
return ret;
}
lua_settop(L, top);
}
return 1;
}
