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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 field
import "github.com/facebook/ent/schema"
// Annotation is a builtin schema annotation for
// configuring the schema fields in codegen.
type Annotation struct {
// The StructTag option allows overriding the struct-tag
// of the fields in the generated entity. For example:
//
// field.Annotation{
// StructTag: map[string]string{
// "id": `json:"id,omitempty" yaml:"-"`
// }
// }
//
StructTag map[string]string
}
// Name describes the annotation name.
func (Annotation) Name() string {
return "Fields"
}
// Merge implements the schema.Merger interface.
func (a Annotation) Merge(other schema.Annotation) schema.Annotation {
var ant Annotation
switch other := other.(type) {
case Annotation:
ant = other
case *Annotation:
if other != nil {
ant = *other
}
default:
return a
}
for k, v := range ant.StructTag {
if a.StructTag == nil {
a.StructTag = make(map[string]string)
}
a.StructTag[k] = v
}
return a
}
var (
_ schema.Annotation = (*Annotation)(nil)
_ schema.Merger = (*Annotation)(nil)
)
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