Move global variables related to time storage into connection statuses.

driver.go

@@ -52,6 +52,7 @@ func (d *impl) Open(name string) (driver.Conn, error) {
 		return nil, err
 	}
 	c.BusyTimeout(10 * time.Second)
+	c.ScanNumericalAsTime = true
 	return &conn{c}, nil
 }
 

sqlite.go

@@ -156,6 +156,11 @@ type Conn struct {
 	modules         map[string]*sqliteModule
 	timeUsed        time.Time
 	nTransaction    uint8
+	// DefaultTimeLayout specifies the layout used to persist time ("2006-01-02 15:04:05.999Z07:00" by default).
+	// Using type alias implementing the Scanner/Valuer interfaces is suggested...
+	DefaultTimeLayout string
+	// ScanNumericalAsTime tells the driver to try to parse column with NUMERIC affinity as time.Time (using the DefaultTimeLayout)
+	ScanNumericalAsTime bool
 }
 
 // Version returns the run-time library version number
@@ -220,7 +225,7 @@ func OpenVfs(filename string, vfsname string, flags ...OpenFlag) (*Conn, error)
 	if db == nil {
 		return nil, errors.New("sqlite succeeded without returning a database")
 	}
-	c := &Conn{db: db, stmtCache: newCache()}
+	c := &Conn{db: db, stmtCache: newCache(), DefaultTimeLayout: "2006-01-02 15:04:05.999Z07:00"}
 	if os.Getenv("SQLITE_DEBUG") != "" {
 		c.SetAuthorizer(authorizer, c.db)
 		c.SetCacheSize(0)

stmt.go

@@ -339,10 +339,6 @@ var NullIfEmptyString = true
 // NullIfZeroTime transforms zero time (time.Time.IsZero) to null when true (true by default)
 var NullIfZeroTime = true
 
-// DefaultTimeLayout specifies the layout used to persist time ("2006-01-02 15:04:05.999Z07:00" by default).
-// Using type alias implementing the Scanner/Valuer interfaces is suggested...
-var DefaultTimeLayout = "2006-01-02 15:04:05.999Z07:00"
-
 // BindByIndex binds value to the specified host parameter of the prepared statement.
 // Value's type/kind is used to find the storage class.
 // The leftmost SQL parameter has an index of 1.
@@ -388,7 +384,7 @@ func (s *Stmt) BindByIndex(index int, value interface{}) error {
 			rv = C.sqlite3_bind_null(s.stmt, i)
 		} else {
 			//rv = C.sqlite3_bind_int64(s.stmt, i, C.sqlite3_int64(value.Unix()))
-			cs, l := cstring(value.Format(DefaultTimeLayout))
+			cs, l := cstring(value.Format(s.c.DefaultTimeLayout))
 			rv = C.my_bind_text(s.stmt, i, cs, l)
 		}
 	case ZeroBlobLength:
@@ -823,9 +819,6 @@ func (s *Stmt) ScanReflect(index int, v interface{}) (bool, error) {
 	return isNull, err
 }
 
-// ScanNumericalAsTime tells the driver to try to parse column with NUMERIC affinity as time.Time (using the DefaultTimeLayout)
-var ScanNumericalAsTime = false
-
 // ScanValue scans result value from a query.
 // The leftmost column/index is number 0.
 //
@@ -844,10 +837,10 @@ func (s *Stmt) ScanValue(index int, blob bool) (interface{}, bool) {
 	case Null:
 		return nil, true
 	case Text: // does not work as expected if column type affinity is TEXT but inserted value was a numeric
-		if ScanNumericalAsTime && s.ColumnTypeAffinity(index) == Numerical {
+		if s.c.ScanNumericalAsTime && s.ColumnTypeAffinity(index) == Numerical {
 			p := C.sqlite3_column_text(s.stmt, C.int(index))
 			txt := C.GoString((*C.char)(unsafe.Pointer(p)))
-			value, err := time.Parse(DefaultTimeLayout, txt)
+			value, err := time.Parse(s.c.DefaultTimeLayout, txt)
 			if err == nil {
 				return value, false
 			}