46 lines
896 B
Go
46 lines
896 B
Go
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package cockroach
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import (
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"database/sql/driver"
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"encoding/json"
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"errors"
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)
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// https://github.com/upper/db/blob/master/postgresql/custom_types.go#L43
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type Metadata map[string]interface{}
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// Scan satisfies the sql.Scanner interface.
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func (m *Metadata) Scan(src interface{}) error {
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source, ok := src.([]byte)
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if !ok {
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return errors.New("Type assertion .([]byte) failed.")
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}
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var i interface{}
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err := json.Unmarshal(source, &i)
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if err != nil {
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return err
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}
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*m, ok = i.(map[string]interface{})
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if !ok {
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return errors.New("Type assertion .(map[string]interface{}) failed.")
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}
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return nil
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}
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// Value satisfies the driver.Valuer interface.
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func (m Metadata) Value() (driver.Value, error) {
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j, err := json.Marshal(m)
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return j, err
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}
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func toMetadata(m *Metadata) map[string]interface{} {
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md := make(map[string]interface{})
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for k, v := range *m {
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md[k] = v
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}
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return md
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}
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