Skip to content

save/update inverses before record #126

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Apr 20, 2017
Merged

save/update inverses before record #126

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
92 changes: 73 additions & 19 deletions generator/templates/model.tgo
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -96,35 +96,26 @@ func New{{.StoreName}}(db *sql.DB) *{{.StoreName}} {
return &{{.StoreName}}{kallax.NewStore(db)}
}

{{if .HasRelationships}}
{{if .HasNonInverses}}
func (s *{{.StoreName}}) relationshipRecords(record *{{.Name}}) []kallax.RecordWithSchema {
record.ClearVirtualColumns()
var records []kallax.RecordWithSchema
{{range .Relationships}}
{{- if .IsInverse -}}
if {{if .IsPtr}}record.{{.Name}} != nil{{else}}!record.{{.Name}}.GetID().IsEmpty(){{end}} {
record.AddVirtualColumn("{{.ForeignKey}}", record.{{.Name}}.GetID())
records = append(records, kallax.RecordWithSchema{
Schema.{{.TypeSchemaName}}.BaseSchema,
{{if not .IsPtr}}&{{end}}record.{{.Name}},
})
}
{{else if .IsOneToManyRelationship}}
{{range .NonInverses}}
{{if .IsOneToManyRelationship}}
for _, rec := range record.{{.Name}} {
rec.ClearVirtualColumns()
rec.AddVirtualColumn("{{.ForeignKey}}", record.GetID())
records = append(records, kallax.RecordWithSchema{
Schema.{{.TypeSchemaName}}.BaseSchema,
{{if not ($.IsPtrSlice .)}}&{{end}}rec,
Schema: Schema.{{.TypeSchemaName}}.BaseSchema,
Record: {{if not ($.IsPtrSlice .)}}&{{end}}rec,
})
}
{{else}}
if {{if .IsPtr}}record.{{.Name}} != nil{{else}}!record.{{.Name}}.GetID().IsEmpty(){{end}} {
record.{{.Name}}.ClearVirtualColumns()
record.{{.Name}}.AddVirtualColumn("{{.ForeignKey}}", record.GetID())
records = append(records, kallax.RecordWithSchema{
Schema.{{.TypeSchemaName}}.BaseSchema,
{{if not .IsPtr}}&{{end}}record.{{.Name}},
Schema: Schema.{{.TypeSchemaName}}.BaseSchema,
Record: {{if not .IsPtr}}&{{end}}record.{{.Name}},
})
}
{{end}}
Expand All @@ -133,6 +124,23 @@ func (s *{{.StoreName}}) relationshipRecords(record *{{.Name}}) []kallax.RecordW
}
{{end}}

{{if .HasInverses}}
func (s *{{.StoreName}}) inverseRecords(record *{{.Name}}) []kallax.RecordWithSchema {
record.ClearVirtualColumns()
var records []kallax.RecordWithSchema
{{range .Inverses}}
if {{if .IsPtr}}record.{{.Name}} != nil{{else}}!record.{{.Name}}.GetID().IsEmpty(){{end}} {
record.AddVirtualColumn("{{.ForeignKey}}", record.{{.Name}}.GetID())
records = append(records, kallax.RecordWithSchema{
Schema: Schema.{{.TypeSchemaName}}.BaseSchema,
Record: {{if not .IsPtr}}&{{end}}record.{{.Name}},
})
}
{{end}}
return records
}
{{end}}

// Insert inserts a {{.Name}} in the database. A non-persisted object is
// required for this operation.
func (s *{{.StoreName}}) Insert(record *{{.Name}}) error {
Expand All @@ -146,13 +154,34 @@ func (s *{{.StoreName}}) Insert(record *{{.Name}}) error {
}
{{end}}
{{if .HasRelationships}}
{{if .HasNonInverses}}
records := s.relationshipRecords(record)
if len(records) > 0 {
{{end}}
{{if .HasInverses}}
inverseRecords := s.inverseRecords(record)
{{end}}
if {{if .HasNonInverses}}len(records) > 0{{end}} {{if and (.HasNonInverses) (.HasInverses)}}&&{{end}} {{if .HasInverses}}len(inverseRecords) > 0{{end}} {
return s.Store.Transaction(func(s *kallax.Store) error {
{{if .HasInverses}}
for _, r := range inverseRecords {
if err := kallax.ApplyBeforeEvents(r.Record); err != nil {
return err
}
persisted := r.Record.IsPersisted()

if _, err := s.Save(r.Schema, r.Record); err != nil {
return err
}

if err := kallax.ApplyAfterEvents(r.Record, persisted); err != nil {
return err
}
}
{{end}}
if err := s.Insert(Schema.{{.Name}}.BaseSchema, record); err != nil {
return err
}

{{if .HasNonInverses}}
for _, r := range records {
if err := kallax.ApplyBeforeEvents(r.Record); err != nil {
return err
Expand All @@ -167,6 +196,7 @@ func (s *{{.StoreName}}) Insert(record *{{.Name}}) error {
return err
}
}
{{end}}

{{if .Events.Has "AfterInsert"}}
if err := record.AfterInsert(); err != nil {
Expand Down Expand Up @@ -224,14 +254,37 @@ func (s *{{.StoreName}}) Update(record *{{.Name}}, cols ...kallax.SchemaField) (
}
{{end}}
{{if .HasRelationships}}
{{if .HasNonInverses}}
records := s.relationshipRecords(record)
if len(records) > 0 {
{{end}}
{{if .HasInverses}}
inverseRecords := s.inverseRecords(record)
{{end}}
if {{if .HasNonInverses}}len(records) > 0{{end}} {{if and (.HasNonInverses) (.HasInverses)}}&&{{end}} {{if .HasInverses}}len(inverseRecords) > 0{{end}} {
err = s.Store.Transaction(func(s *kallax.Store) error {
{{if .HasInverses}}
for _, r := range inverseRecords {
if err := kallax.ApplyBeforeEvents(r.Record); err != nil {
return err
}
persisted := r.Record.IsPersisted()

if _, err := s.Save(r.Schema, r.Record); err != nil {
return err
}

if err := kallax.ApplyAfterEvents(r.Record, persisted); err != nil {
return err
}
}
{{end}}

updated, err = s.Update(Schema.{{.Name}}.BaseSchema, record, cols...)
if err != nil {
return err
}

{{if .HasNonInverses}}
for _, r := range records {
if err := kallax.ApplyBeforeEvents(r.Record); err != nil {
return err
Expand All @@ -246,6 +299,7 @@ func (s *{{.StoreName}}) Update(record *{{.Name}}, cols ...kallax.SchemaField) (
return err
}
}
{{end}}

{{if .Events.Has "AfterUpdate"}}
if err := record.AfterUpdate(); err != nil {
Expand Down
32 changes: 32 additions & 0 deletions generator/types.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -440,11 +440,43 @@ func (m *Model) Relationships() []*Field {
return relationshipsOnFields(m.Fields)
}

// Inverses returns the inverse relationships of the model.
func (m *Model) Inverses() []*Field {
var inverses []*Field
for _, f := range relationshipsOnFields(m.Fields) {
if f.IsInverse() {
inverses = append(inverses, f)
}
}
return inverses
}

// NonInverses returns the relationships of the model that are not inverses.
func (m *Model) NonInverses() []*Field {
var rels []*Field
for _, f := range relationshipsOnFields(m.Fields) {
if !f.IsInverse() {
rels = append(rels, f)
}
}
return rels
}

// HasRelationships returns whether the model has relationships or not.
func (m *Model) HasRelationships() bool {
return len(m.Relationships()) > 0
}

// HasInverses returns whether the model has inverse relationships or not.
func (m *Model) HasInverses() bool {
return len(m.Inverses()) > 0
}

// HasNonInverses returns whether the model has non inverse relationships or not.
func (m *Model) HasNonInverses() bool {
return len(m.NonInverses()) > 0
}

func relationshipsOnFields(fields []*Field) []*Field {
var result []*Field
for _, f := range fields {
Expand Down
Loading