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querycnd.go
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/
querycnd.go
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package simple
import "github.com/jinzhu/gorm"
type QueryCnd struct {
Query string
Args []interface{}
Orders []string
Limit int
Offset int
}
func NewQueryCnd(query string, args ...interface{}) *QueryCnd {
q := &QueryCnd{}
q.Query = query
q.Args = args
return q
}
func (q *QueryCnd) Order(order string) *QueryCnd {
q.Orders = append(q.Orders, order)
return q
}
func (q *QueryCnd) Size(size int) *QueryCnd {
q.Limit = size
return q
}
func (q *QueryCnd) Page(page, size int) *QueryCnd {
p := Paging{Page: page, Limit: size}
q.Limit = p.Limit
q.Offset = p.Offset()
return q
}
func (q *QueryCnd) DoQuery(db *gorm.DB) *gorm.DB {
ret := db.Where(q.Query, q.Args...)
if q.Limit > 0 {
ret = ret.Limit(q.Limit)
}
if q.Offset > 0 {
ret = ret.Limit(q.Offset)
}
if len(q.Orders) > 0 {
for _, order := range q.Orders {
ret = ret.Order(order)
}
}
return ret
}