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delete.go
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delete.go
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package makroud
import (
"context"
"github.com/pkg/errors"
"github.com/ulule/loukoum/v3"
)
// Delete deletes the given instance.
func Delete(ctx context.Context, driver Driver, model Model) error {
err := remove(ctx, driver, model)
if err != nil {
return errors.Wrap(err, "makroud: cannot execute delete")
}
return nil
}
// Archive archives the given instance.
func Archive(ctx context.Context, driver Driver, model Model) error {
err := archive(ctx, driver, model)
if err != nil {
return errors.Wrap(err, "makroud: cannot execute archive")
}
return nil
}
func remove(ctx context.Context, driver Driver, model Model) error {
if driver == nil {
return errors.WithStack(ErrInvalidDriver)
}
schema, err := GetSchema(driver, model)
if err != nil {
return err
}
pk := schema.PrimaryKey()
id, err := pk.Value(model)
if err != nil {
return errors.Wrapf(err, "%T cannot be deleted", model)
}
builder := loukoum.Delete(schema.TableName()).
Where(loukoum.Condition(pk.ColumnName()).Equal(id))
return Exec(ctx, driver, builder)
}
func archive(ctx context.Context, driver Driver, model Model) error {
if driver == nil {
return errors.WithStack(ErrInvalidDriver)
}
schema, err := GetSchema(driver, model)
if err != nil {
return err
}
if !schema.HasDeletedKey() {
return errors.Wrapf(ErrSchemaDeletedKey, "%T doesn't support archive operation", model)
}
pk := schema.PrimaryKey()
id, err := pk.Value(model)
if err != nil {
return errors.Wrapf(err, "%T cannot be archived", model)
}
builder := loukoum.Update(schema.TableName()).
Set(loukoum.Pair(schema.DeletedKeyName(), loukoum.Raw("NOW()"))).
Where(loukoum.Condition(pk.ColumnName()).Equal(id)).
Returning(schema.DeletedKeyName())
return Exec(ctx, driver, builder)
}