77 lines
1.3 KiB
Go
77 lines
1.3 KiB
Go
package database
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import (
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"errors"
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"gorm.io/gorm"
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)
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type BaseDAO[T any] struct {
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db *gorm.DB
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}
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func NewDAO[T any](db *gorm.DB) *BaseDAO[T] {
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return &BaseDAO[T]{
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db: db,
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}
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}
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/* Single Table Operations */
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func (b *BaseDAO[T]) GetAll(e T) ([]T, error) {
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var r []T
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if err := b.db.Find(&r, e).Error; err != nil {
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return nil, err
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}
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return r, nil
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}
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func (b *BaseDAO[T]) GetOne(e T) (T, error) {
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var r T
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if err := b.db.First(&r, e).Error; err != nil {
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return r, err
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}
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return r, nil
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}
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func (b *BaseDAO[T]) GetSome(e T, limit, offset int) ([]T, error) {
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var r []T
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if err := b.db.Find(&r, e).Limit(limit).Offset(offset).Error; err != nil {
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return nil, err
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}
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return r, nil
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}
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func (b *BaseDAO[T]) Create(e T) (T, error) {
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if err := b.db.Create(&e).Error; err != nil {
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return e, err
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}
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return e, nil
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}
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func (b *BaseDAO[T]) Update(e T) (T, error) {
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if err := b.db.Updates(&e).Error; err != nil {
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return e, err
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}
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return e, nil
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}
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func (b *BaseDAO[T]) UpdateOrCreate(e T) (T, error) {
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var r T
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err := b.db.First(&r, e).Error
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if err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return b.Create(e)
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}
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return e, err
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}
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return b.Update(e)
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}
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func (b *BaseDAO[T]) Delete(e T) error {
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if err := b.db.Delete(e).Error; err != nil {
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return err
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}
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return nil
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}
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