60 lines
1.1 KiB
Go
60 lines
1.1 KiB
Go
package operator
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import (
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"fmt"
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"go.mongodb.org/mongo-driver/bson"
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)
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type Unset string
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func (u Unset) MarshalBSON() ([]byte, error) {
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return opMarshal("$unset", string(u), "")
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}
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type PopIf struct {
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Key string
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Filter interface{}
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}
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func (pi PopIf) MarshalBSON() ([]byte, error) {
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return opMarshal("$pull", pi.Key, pi.Filter)
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}
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type Set struct {
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Key string
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Value interface{}
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}
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func (s Set) MarshalBSON() ([]byte, error) {
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return opMarshal("$set", s.Key, s.Value)
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}
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type Push struct {
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Key string
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Value interface{}
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}
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func (p Push) MarshalBSON() ([]byte, error) {
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return opMarshal("$push", p.Key, p.Value)
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}
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func opMarshal(op, key string, value interface{}) ([]byte, error) {
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marshalable := opMarshalable(op, key, value)
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if len(marshalable) == 0 {
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return nil, fmt.Errorf("failed marshalling op")
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}
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return bson.Marshal(marshalable)
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}
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func opMarshalable(op, key string, value interface{}) map[string]map[string]interface{} {
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if len(key) == 0 {
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return nil
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}
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return map[string]map[string]interface{}{
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op: map[string]interface{}{
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key: value,
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},
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}
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}
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