Upgrade xorm to v0.8.0 (#8536)

1 files changed, 100 insertions, 0 deletions

diff --git a/vendor/xorm.io/xorm/session_iterate.go b/vendor/xorm.io/xorm/session_iterate.go
new file mode 100644
index 0000000000..ca996c2884
--- /dev/null
+++ b/vendor/xorm.io/xorm/session_iterate.go
@@ -0,0 +1,100 @@
+// 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()
+	}
+
+	if session.statement.lastError != nil {
+		return session.statement.lastError
+	}
+
+	if session.statement.bufferSize > 0 {
+		return session.bufferIterate(bean, fun)
+	}
+
+	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
+}
+
+// BufferSize sets the buffersize for iterate
+func (session *Session) BufferSize(size int) *Session {
+	session.statement.bufferSize = size
+	return session
+}
+
+func (session *Session) bufferIterate(bean interface{}, fun IterFunc) error {
+	if session.isAutoClose {
+		defer session.Close()
+	}
+
+	var bufferSize = session.statement.bufferSize
+	var limit = session.statement.LimitN
+	if limit > 0 && bufferSize > limit {
+		bufferSize = limit
+	}
+	var start = session.statement.Start
+	v := rValue(bean)
+	sliceType := reflect.SliceOf(v.Type())
+	var idx = 0
+	for {
+		slice := reflect.New(sliceType)
+		if err := session.Limit(bufferSize, start).find(slice.Interface(), bean); err != nil {
+			return err
+		}
+
+		for i := 0; i < slice.Elem().Len(); i++ {
+			if err := fun(idx, slice.Elem().Index(i).Addr().Interface()); err != nil {
+				return err
+			}
+			idx++
+		}
+
+		start = start + slice.Elem().Len()
+		if limit > 0 && idx+bufferSize > limit {
+			bufferSize = limit - idx
+		}
+
+		if bufferSize <= 0 || slice.Elem().Len() < bufferSize || idx == limit {
+			break
+		}
+	}
+
+	return nil
+}