40 lines
838 B
Go
40 lines
838 B
Go
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package sqlite
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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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"reflect"
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)
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// JSONBlob type for marshaling/unmarshaling inner type to json.
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type JSONBlob struct {
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Data interface{}
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}
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// Scan implements interface.
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func (blob *JSONBlob) Scan(value interface{}) error {
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dataVal := reflect.ValueOf(blob.Data)
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if value == nil || dataVal.Kind() == reflect.Ptr && dataVal.IsNil() {
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return nil
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}
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bytes, ok := value.([]byte)
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if !ok {
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return errors.New("not a byte slice")
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}
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if len(bytes) == 0 {
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return nil
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}
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err := json.Unmarshal(bytes, blob.Data)
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return err
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}
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// Value implements interface.
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func (blob *JSONBlob) Value() (driver.Value, error) {
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dataVal := reflect.ValueOf(blob.Data)
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if blob.Data == nil || dataVal.Kind() == reflect.Ptr && dataVal.IsNil() {
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return nil, nil
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}
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return json.Marshal(blob.Data)
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}
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