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This commit is contained in:
Fabien Masson
2026-08-08 21:23:02 +02:00
parent 6fb4db0180
commit 4caff16e01
5 changed files with 71 additions and 70 deletions
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orm.go
+57 -57
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@@ -1,4 +1,4 @@
package orm
package lasebuche
import (
"database/sql"
@@ -93,13 +93,13 @@ func (t Table[T]) Get(id string) (*T, error) {
// We need to pass pointers to each field in the order of the SQL columns
ptrVal := reflect.ValueOf(&obj).Elem()
fields := make([]any, len(t.fields))
for i, f := range t.fields {
fieldValue := ptrVal.FieldByName(f.name)
if !fieldValue.IsValid() {
return nil, fmt.Errorf("field %s not found in struct", f.name)
}
// For all fields, pass the address so Scan can set the value
// For pointer fields (e.g., *string), this gives **T
// For value fields (e.g., string), this gives *T
@@ -125,38 +125,38 @@ func (t Table[T]) getWithTimeHandling(id string) (*T, error) {
var obj T
ptrVal := reflect.ValueOf(&obj).Elem()
// Create a slice to hold all values, using string for time fields
tempFields := make([]any, len(t.fields))
fieldInfos := make([]struct {
index int
fieldValue reflect.Value
isTime bool
isTimePtr bool
index int
fieldValue reflect.Value
isTime bool
isTimePtr bool
}, len(t.fields))
for i, f := range t.fields {
fieldValue := ptrVal.FieldByName(f.name)
if !fieldValue.IsValid() {
return nil, fmt.Errorf("field %s not found in struct", f.name)
}
// Check if this is a time.Time or *time.Time field
isTime := fieldValue.Type() == reflect.TypeOf(time.Time{})
isTimePtr := fieldValue.Kind() == reflect.Ptr && fieldValue.Type().Elem() == reflect.TypeOf(time.Time{})
fieldInfos[i] = struct {
index int
fieldValue reflect.Value
isTime bool
isTimePtr bool
index int
fieldValue reflect.Value
isTime bool
isTimePtr bool
}{
index: i,
fieldValue: fieldValue,
isTime: isTime,
isTimePtr: isTimePtr,
index: i,
fieldValue: fieldValue,
isTime: isTime,
isTimePtr: isTimePtr,
}
// For time fields, use a string to capture the raw value
if isTime || isTimePtr {
var s sql.NullString
@@ -169,7 +169,7 @@ func (t Table[T]) getWithTimeHandling(id string) (*T, error) {
if err := row.Scan(tempFields...); err != nil {
return nil, err
}
// Copy values back, parsing time fields
for _, info := range fieldInfos {
if info.isTime || info.isTimePtr {
@@ -206,11 +206,11 @@ func (t Table[T]) SelectOne(where string, args ...any) (*T, error) {
if row == nil {
return nil, sql.ErrNoRows
}
var obj T
ptrVal := reflect.ValueOf(&obj).Elem()
fields := make([]any, len(t.fields))
for i, f := range t.fields {
fieldValue := ptrVal.FieldByName(f.name)
if !fieldValue.IsValid() {
@@ -235,7 +235,7 @@ func (t Table[T]) selectOneWithTimeHandling(where string, args ...any) (*T, erro
if row == nil {
return nil, sql.ErrNoRows
}
return t.scanWithTimeHandling(row)
}
@@ -244,7 +244,7 @@ func (t Table[T]) SelectWhere(where string, args ...any) ([]*T, error) {
if where != "" {
query += " where " + where
}
rows, err := t.db.Query(query, args...)
if err != nil {
return nil, err
@@ -252,7 +252,7 @@ func (t Table[T]) SelectWhere(where string, args ...any) ([]*T, error) {
defer rows.Close()
var results []*T
for rows.Next() {
var obj T
ptrVal := reflect.ValueOf(&obj).Elem()
@@ -264,7 +264,7 @@ func (t Table[T]) SelectWhere(where string, args ...any) ([]*T, error) {
}
fields[i] = fieldValue.Addr().Interface()
}
if err := rows.Scan(fields...); err != nil {
if strings.Contains(err.Error(), "unsupported Scan, storing driver.Value type string into type *time.Time") {
// Need to re-execute with time handling
@@ -275,7 +275,7 @@ func (t Table[T]) SelectWhere(where string, args ...any) ([]*T, error) {
}
results = append(results, &obj)
}
if err := rows.Err(); err != nil {
return nil, err
}
@@ -288,7 +288,7 @@ func (t Table[T]) selectWhereWithTimeHandling(where string, args ...any) ([]*T,
if where != "" {
query += " where " + where
}
rows, err := t.db.Query(query, args...)
if err != nil {
return nil, err
@@ -296,7 +296,7 @@ func (t Table[T]) selectWhereWithTimeHandling(where string, args ...any) ([]*T,
defer rows.Close()
var results []*T
for rows.Next() {
obj, err := t.scanWithTimeHandling(rows)
if err != nil {
@@ -304,7 +304,7 @@ func (t Table[T]) selectWhereWithTimeHandling(where string, args ...any) ([]*T,
}
results = append(results, obj)
}
if err := rows.Err(); err != nil {
return nil, err
}
@@ -314,43 +314,43 @@ func (t Table[T]) selectWhereWithTimeHandling(where string, args ...any) ([]*T,
func (t Table[T]) scanWithTimeHandling(scanner any) (*T, error) {
var obj T
ptrVal := reflect.ValueOf(&obj).Elem()
// Create a slice to hold all values, using string for time fields
tempFields := make([]any, len(t.fields))
fieldInfos := make([]struct {
index int
fieldValue reflect.Value
isTime bool
isTimePtr bool
index int
fieldValue reflect.Value
isTime bool
isTimePtr bool
}, len(t.fields))
for i, f := range t.fields {
fieldValue := ptrVal.FieldByName(f.name)
if !fieldValue.IsValid() {
return nil, fmt.Errorf("field %s not found in struct", f.name)
}
// Check if this is a time.Time or *time.Time field
isTime := fieldValue.Type() == reflect.TypeOf(time.Time{})
var isTimePtr bool
if fieldValue.Kind() == reflect.Ptr {
isTimePtr = fieldValue.Type().Elem() == reflect.TypeOf(time.Time{})
}
fieldInfos[i] = struct {
index int
fieldValue reflect.Value
isTime bool
isTimePtr bool
index int
fieldValue reflect.Value
isTime bool
isTimePtr bool
}{
index: i,
fieldValue: fieldValue,
isTime: isTime,
isTimePtr: isTimePtr,
index: i,
fieldValue: fieldValue,
isTime: isTime,
isTimePtr: isTimePtr,
}
// For time fields, use a string to capture the raw value
if isTime || isTimePtr {
var s sql.NullString
@@ -369,11 +369,11 @@ func (t Table[T]) scanWithTimeHandling(scanner any) (*T, error) {
default:
return nil, fmt.Errorf("unsupported scanner type")
}
if err != nil {
return nil, err
}
// Copy values back, parsing time fields
for _, info := range fieldInfos {
if info.isTime || info.isTimePtr {
@@ -480,7 +480,7 @@ func (t Table[T]) Update(value *T) (*T, error) {
return nil, fmt.Errorf("VersionId field not found")
}
oldVersionId := versionField.String()
// Generate new VersionId for optimistic locking
newVersionId := GenID()
versionField.SetString(newVersionId)
@@ -501,7 +501,7 @@ func (t Table[T]) Update(value *T) (*T, error) {
// Build the values slice for the prepared statement
// UPDATE SQL expects: SET fields (excluding ID), then WHERE: ID and VersionId (old version)
vals := make([]any, 0, len(t.fields))
// Add all fields except ID for SET clause (includes new VersionId)
for _, f := range t.fields {
if f.dbname == "id" {
@@ -516,24 +516,24 @@ func (t Table[T]) Update(value *T) (*T, error) {
// Add ID and OLD VersionId at the end for WHERE clause
idField := val.FieldByName("ID")
if !idField.IsValid() {
return nil, fmt.Errorf("ID field not found")
}
vals = append(vals, idField.Interface(), oldVersionId)
result, err := t.db.Exec(t.updatesql, vals...)
if err != nil {
return nil, err
}
// Check if any row was affected
rowsAffected, err := result.RowsAffected()
if err != nil {
return nil, err
}
if rowsAffected == 0 {
return nil, fmt.Errorf("no rows affected: record not found or version mismatch")
}