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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.
package schema
import (
"math"
"entgo.io/ent"
"entgo.io/ent/schema"
"entgo.io/ent/schema/edge"
"entgo.io/ent/schema/field"
"entgo.io/ent/schema/index"
)
// File holds the schema definition for the File entity.
type File struct {
ent.Schema
}
func (File) Annotations() []schema.Annotation {
return []schema.Annotation{
edge.Annotation{
StructTag: `json:"file_edges"`,
},
}
}
// Fields of the File.
func (File) Fields() []ent.Field {
return []ent.Field{
field.Int("size").
StorageKey("fsize").
Default(math.MaxInt32).
Positive(),
field.String("name"),
field.String("user").
Optional().
Nillable(),
field.String("group").
Optional(),
field.Bool("op").
Optional(),
// Skip generating the "FieldID" predicate
// as it conflicts with the "FieldID" constant.
field.Int("field_id").
Optional(),
}
}
// Edges of the File.
func (File) Edges() []ent.Edge {
return []ent.Edge{
edge.From("owner", User.Type).
Ref("files").
Unique(),
edge.From("type", FileType.Type).
Ref("files").
Unique(),
edge.To("field", FieldType.Type),
}
}
// Indexes of a file.
func (File) Indexes() []ent.Index {
return []ent.Index{
// non-unique index should not prevent duplicates.
index.Fields("name", "size").
StorageKey("file_name_size"),
// unique index prevents duplicates records.
index.Fields("name", "user").
Unique(),
// index on edges only.
index.Edges("owner", "type"),
// unique index under the "owner" sub-tree.
// user/owner can't have files with duplicate names.
index.Fields("name").
Edges("owner", "type").
Unique(),
index.Fields("name").
Edges("owner"),
}
}
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