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forgejo/models/db/iterate.go
flynnnnnnnnnn e81ccc406b
Implement FSFE REUSE for golang files (#21840)
Change all license headers to comply with REUSE specification.

Fix #16132

Co-authored-by: flynnnnnnnnnn <flynnnnnnnnnn@github>
Co-authored-by: John Olheiser <john.olheiser@gmail.com>
2022-11-27 18:20:29 +00:00

38 lines
777 B
Go

// Copyright 2022 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package db
import (
"context"
"code.gitea.io/gitea/modules/setting"
"xorm.io/builder"
)
// Iterate iterate all the Bean object
func Iterate[Bean any](ctx context.Context, cond builder.Cond, f func(ctx context.Context, bean *Bean) error) error {
var start int
batchSize := setting.Database.IterateBufferSize
sess := GetEngine(ctx)
for {
beans := make([]*Bean, 0, batchSize)
if cond != nil {
sess = sess.Where(cond)
}
if err := sess.Limit(batchSize, start).Find(&beans); err != nil {
return err
}
if len(beans) == 0 {
return nil
}
start += len(beans)
for _, bean := range beans {
if err := f(ctx, bean); err != nil {
return err
}
}
}
}