orm_queryset.go
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package orm
import (
"fmt"
)
type querySet struct {
mi *modelInfo
cond *Condition
related []string
relDepth int
limit int
offset int64
orders []string
orm *orm
}
func (o *querySet) Filter(expr string, args ...interface{}) QuerySeter {
o = o.clone()
if o.cond == nil {
o.cond = NewCondition()
}
o.cond.And(expr, args...)
return o
}
func (o *querySet) Exclude(expr string, args ...interface{}) QuerySeter {
o = o.clone()
if o.cond == nil {
o.cond = NewCondition()
}
o.cond.AndNot(expr, args...)
return o
}
func (o *querySet) Limit(limit int, args ...int64) QuerySeter {
o = o.clone()
o.limit = limit
if len(args) > 0 {
o.offset = args[0]
}
return o
}
func (o *querySet) Offset(offset int64) QuerySeter {
o = o.clone()
o.offset = offset
return o
}
func (o *querySet) OrderBy(exprs ...string) QuerySeter {
o = o.clone()
o.orders = exprs
return o
}
func (o *querySet) RelatedSel(params ...interface{}) QuerySeter {
o = o.clone()
var related []string
if len(params) == 0 {
o.relDepth = DefaultRelsDepth
} else {
for _, p := range params {
switch val := p.(type) {
case string:
related = append(o.related, val)
case int:
o.relDepth = val
default:
panic(fmt.Sprintf("<querySet.RelatedSel> wrong param kind: %v", val))
}
}
}
o.related = related
return o
}
func (o querySet) clone() *querySet {
if o.cond != nil {
o.cond = o.cond.Clone()
}
return &o
}
func (o querySet) SetCond(cond *Condition) QuerySeter {
o.cond = cond
return &o
}
func (o *querySet) Count() (int64, error) {
return o.orm.alias.DbBaser.Count(o.orm.db, o, o.mi, o.cond)
}
func (o *querySet) Update(values Params) (int64, error) {
return o.orm.alias.DbBaser.UpdateBatch(o.orm.db, o, o.mi, o.cond, values)
}
func (o *querySet) Delete() (int64, error) {
return o.orm.alias.DbBaser.DeleteBatch(o.orm.db, o, o.mi, o.cond)
}
func (o *querySet) PrepareInsert() (Inserter, error) {
return newInsertSet(o.orm, o.mi)
}
func (o *querySet) All(container interface{}) (int64, error) {
return o.orm.alias.DbBaser.ReadBatch(o.orm.db, o, o.mi, o.cond, container)
}
func (o *querySet) One(container Modeler) error {
num, err := o.orm.alias.DbBaser.ReadBatch(o.orm.db, o, o.mi, o.cond, container)
if err != nil {
return err
}
if num > 1 {
return ErrMultiRows
}
return nil
}
func (o *querySet) Values(results *[]Params, exprs ...string) (int64, error) {
return o.orm.alias.DbBaser.ReadValues(o.orm.db, o, o.mi, o.cond, exprs, results)
}
func (o *querySet) ValuesList(results *[]ParamsList, exprs ...string) (int64, error) {
return o.orm.alias.DbBaser.ReadValues(o.orm.db, o, o.mi, o.cond, exprs, results)
}
func (o *querySet) ValuesFlat(result *ParamsList, expr string) (int64, error) {
return o.orm.alias.DbBaser.ReadValues(o.orm.db, o, o.mi, o.cond, []string{expr}, result)
}
func newQuerySet(orm *orm, mi *modelInfo) QuerySeter {
o := new(querySet)
o.mi = mi
o.orm = orm
return o
}