gitroast/vendor/github.com/go-xorm/xorm/session_iterate.go

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// Copyright 2016 The Xorm Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package xorm
import "reflect"
// IterFunc only use by Iterate
type IterFunc func(idx int, bean interface{}) error
// Rows return sql.Rows compatible Rows obj, as a forward Iterator object for iterating record by record, bean's non-empty fields
// are conditions.
func (session *Session) Rows(bean interface{}) (*Rows, error) {
return newRows(session, bean)
}
// Iterate record by record handle records from table, condiBeans's non-empty fields
// are conditions. beans could be []Struct, []*Struct, map[int64]Struct
// map[int64]*Struct
func (session *Session) Iterate(bean interface{}, fun IterFunc) error {
if session.isAutoClose {
defer session.Close()
}
rows, err := session.Rows(bean)
if err != nil {
return err
}
defer rows.Close()
i := 0
for rows.Next() {
b := reflect.New(rows.beanType).Interface()
err = rows.Scan(b)
if err != nil {
return err
}
err = fun(i, b)
if err != nil {
return err
}
i++
}
return err
}