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update.go
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update.go
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// Copyright (C) 2019 Storj Labs, Inc.
// Copyright (C) 2017 Space Monkey, Inc.
// See LICENSE for copying information.
package golang
import (
"storj.io/dbx/ir"
"storj.io/dbx/sql"
"storj.io/dbx/sqlgen/sqlembedgo"
)
type Update struct {
Args []ConditionArg
Info sqlembedgo.Info
InfoGet sqlembedgo.Info
Suffix string
Struct *ModelStruct
Return *Var
AutoFields []*Var
SupportsReturning bool
NeedsNow bool
}
func UpdateFromIR(ir_upd *ir.Update, dialect sql.Dialect) *Update {
update_sql := sql.UpdateSQL(ir_upd, dialect)
upd := &Update{
Args: ConditionArgsFromWheres(ir_upd.Where),
Info: sqlembedgo.Embed("__", update_sql),
Suffix: convertSuffix(ir_upd.Suffix),
Struct: ModelStructFromIR(ir_upd.Model),
SupportsReturning: dialect.Features().Returning,
}
if !ir_upd.NoReturn {
upd.Return = VarFromModel(ir_upd.Model)
}
for _, field := range ir_upd.AutoUpdatableFields() {
upd.NeedsNow = upd.NeedsNow || field.IsTime()
upd.AutoFields = append(upd.AutoFields, VarFromField(field))
}
if !upd.SupportsReturning {
select_sql := sql.SelectSQL(&ir.Read{
From: ir_upd.Model,
Selectables: []ir.Selectable{ir_upd.Model},
Joins: ir_upd.Joins,
Where: ir_upd.Where,
View: ir.All,
}, dialect)
upd.InfoGet = sqlembedgo.Embed("__", select_sql)
}
return upd
}