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{{/*
Copyright 2019-present Facebook Inc. All rights reserved.
This source code is licensed under the Apache 2.0 license found
in the LICENSE file in the root directory of this source tree.
*/}}
{{ define "dialect/sql/entql" }}
{{ $pkg := base $.Config.Package }}
{{ template "header" $ }}
import (
"{{ $.Config.Package }}/predicate"
{{- range $n := $.Nodes }}
"{{ $.Config.Package }}/{{ $n.Package }}"
{{- end }}
"github.com/facebook/ent/dialect/sql"
"github.com/facebook/ent/dialect/sql/sqlgraph"
"github.com/facebook/ent/entql"
"github.com/facebook/ent/schema/field"
)
// schemaGraph holds a representation of ent/schema at runtime.
var schemaGraph = func() *sqlgraph.Schema {
graph := &sqlgraph.Schema{Nodes: make([]*sqlgraph.Node, {{ len $.Nodes }})}
{{- range $i, $n := $.Nodes }}
graph.Nodes[{{ $i }}] = &sqlgraph.Node{
NodeSpec: sqlgraph.NodeSpec{
Table: {{ $n.Package }}.Table,
Columns: {{ $n.Package }}.Columns,
ID: &sqlgraph.FieldSpec{
Type: field.{{ $n.ID.Type.ConstName }},
Column: {{ $n.Package }}.{{ $n.ID.Constant }},
},
},
Type: "{{ $n.Name }}",
Fields: map[string]*sqlgraph.FieldSpec{
{{- range $f := $n.Fields }}
{{ $n.Package }}.{{ $f.Constant }}: {Type: field.{{ $f.Type.ConstName }}, Column: {{ $n.Package }}.{{ $f.Constant }}},
{{- end }}
},
}
{{- end }}
{{- range $n := $.Nodes }}
{{- range $e := $n.Edges }}
graph.MustAddE(
"{{ $e.Name }}",
&sqlgraph.EdgeSpec{
Rel: sqlgraph.{{ $e.Rel.Type }},
Inverse: {{ $e.IsInverse }},
Table: {{ $n.Package }}.{{ $e.TableConstant }},
Columns: {{ if $e.M2M }}{{ $n.Package }}.{{ $e.PKConstant }}{{ else }}[]string{ {{ $n.Package }}.{{ $e.ColumnConstant }} }{{ end }},
Bidi: {{ $e.Bidi }},
},
"{{ $n.Name }}",
"{{ $e.Type.Name }}",
)
{{- end }}
{{- end }}
return graph
}()
// predicateAdder wraps the addPredicate method.
// All update, update-one and query builders implement this interface.
type predicateAdder interface {
addPredicate(func(s *sql.Selector))
}
{{ range $i, $n := $.Nodes }}
{{ $builder := $n.QueryName }}
{{ $receiver := receiver $builder }}
{{ $mutation := $n.MutationName }}
{{ $filter := print $n.FilterName }}
// addPredicate implements the predicateAdder interface.
func ({{ $receiver }} *{{ $builder }}) addPredicate(pred func(s *sql.Selector)) {
{{ $receiver }}.predicates = append({{ $receiver }}.predicates, pred)
}
// Filter returns a Filter implementation to apply filters on the {{ $builder }} builder.
func ({{ $receiver }} *{{ $builder }}) Filter() *{{ $filter }} {
return &{{ $filter }}{ {{ $receiver }} }
}
// addPredicate implements the predicateAdder interface.
func (m *{{ $mutation }}) addPredicate(pred func(s *sql.Selector)) {
m.predicates = append(m.predicates, pred)
}
// Filter returns an entql.Where implementation to apply filters on the {{ $mutation }} builder.
func (m *{{ $mutation }}) Filter() *{{ $filter }} {
return &{{ $filter }}{m}
}
// {{ $filter }} provides a generic filtering capability at runtime for {{ $builder }}.
type {{ $filter }} struct {
predicateAdder
}
// Where applies the entql predicate on the query filter.
func (f *{{ $filter }}) Where(p entql.P) {
f.addPredicate(func(s *sql.Selector) {
if err := schemaGraph.EvalP(schemaGraph.Nodes[{{ $i }}].Type, p, s); err != nil {
s.AddError(err)
}
})
}
{{ $type := $n.ID.Type.Type.String }}
{{ $iface := print (pascal $type) "P" }}
{{ if $n.ID.IsUUID }}{{ $iface = "ValueP" }}{{ end }}
// WhereID applies the entql {{ $type }} predicate on the id field.
func (f *{{ $filter }}) WhereID(p entql.{{ $iface }}) {
f.Where(p.Field({{ $n.Package }}.{{ $n.ID.Constant }}))
}
{{ range $f := $n.Fields }}
{{ $type := $f.Type.Type.String }}
{{ $iface := print (pascal $type) "P" }}
{{- if $f.IsTime }}{{ $iface = "TimeP" }}
{{- else if or $f.IsBytes $f.IsJSON }}{{ $iface = "BytesP" }}
{{- else if $f.IsUUID }}{{ $iface = "ValueP" }}
{{- end }}
// Where{{ $f.StructField }} applies the entql {{ $type }} predicate on the {{ $f.Name }} field.
func (f *{{ $filter }}) Where{{ $f.StructField }}(p entql.{{ $iface }}) {
f.Where(p.Field({{ $n.Package }}.{{ $f.Constant }}))
}
{{ end }}
{{ range $e := $n.Edges }}
{{ $func := print "WhereHas" $e.StructField }}
// {{ $func }} applies a predicate to check if query has an edge {{ $e.Name }}.
func (f *{{ $filter }}) {{ $func }}() {
f.Where(entql.HasEdge("{{ $e.Name }}"))
}
{{ $func = print "WhereHas" $e.StructField "With" }}
// {{ $func }} applies a predicate to check if query has an edge {{ $e.Name }} with a given conditions (other predicates).
func (f *{{ $filter }}) {{ $func }}(preds ...predicate.{{ $e.Type.Name }}) {
f.Where(entql.HasEdgeWith("{{ $e.Name }}", sqlgraph.WrapFunc(func(s *sql.Selector) {
for _, p := range preds {
p(s)
}
})))
}
{{ end }}
{{ end }}
{{ end }}
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