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