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marshal.go 1.7KB

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  1. // Copyright (c) 2012-present The upper.io/db authors. All rights reserved.
  2. //
  3. // Permission is hereby granted, free of charge, to any person obtaining
  4. // a copy of this software and associated documentation files (the
  5. // "Software"), to deal in the Software without restriction, including
  6. // without limitation the rights to use, copy, modify, merge, publish,
  7. // distribute, sublicense, and/or sell copies of the Software, and to
  8. // permit persons to whom the Software is furnished to do so, subject to
  9. // the following conditions:
  10. //
  11. // The above copyright notice and this permission notice shall be
  12. // included in all copies or substantial portions of the Software.
  13. //
  14. // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  15. // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  16. // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  17. // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  18. // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  19. // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  20. // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  21. package db
  22. // Marshaler is the interface implemented by struct fields that can transform
  23. // themselves into values that can be stored on a database.
  24. type Marshaler interface {
  25. // MarshalDB returns the internal database representation of the Go value.
  26. MarshalDB() (interface{}, error)
  27. }
  28. // Unmarshaler is the interface implemented by struct fields that can transform
  29. // themselves from stored database values into Go values.
  30. type Unmarshaler interface {
  31. // UnmarshalDB receives an internal database representation of a value and
  32. // must transform that into a Go value.
  33. UnmarshalDB(interface{}) error
  34. }