Class

com.lightbend.lagom.scaladsl.playjson

JsonMigration

Related Doc: package playjson

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abstract class JsonMigration extends AnyRef

Data migration of old formats to current format can be implemented in a concrete subclass or provided through the factories in JsonMigrations and configured to be used by the PlayJsonSerializer for a changed class.

It is used when deserializing data of older version than the currentVersion. You implement the transformation of the JSON structure in the transform method. If you have changed the class name you should override transformClassName and return current class name.

Source
JsonMigration.scala
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  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
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Instance Constructors

  1. new JsonMigration(currentVersion: Int)

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Value Members

  1. final def !=(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any

  2. final def ##(): Int

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  3. def +(other: String): String

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    Implicit information
    This member is added by an implicit conversion from JsonMigration to any2stringadd[JsonMigration] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd

  4. def ->[B](y: B): (JsonMigration, B)

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    Implicit information
    This member is added by an implicit conversion from JsonMigration to ArrowAssoc[JsonMigration] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()

  5. final def ==(arg0: Any): Boolean

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  6. final def asInstanceOf[T0]: T0

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  7. def clone(): AnyRef

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    protected[java.lang]
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    @throws( ... )

  8. val currentVersion: Int

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  9. def ensuring(cond: (JsonMigration) ⇒ Boolean, msg: ⇒ Any): JsonMigration

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    Implicit information
    This member is added by an implicit conversion from JsonMigration to Ensuring[JsonMigration] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  10. def ensuring(cond: (JsonMigration) ⇒ Boolean): JsonMigration

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    Implicit information
    This member is added by an implicit conversion from JsonMigration to Ensuring[JsonMigration] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  11. def ensuring(cond: Boolean, msg: ⇒ Any): JsonMigration

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    Implicit information
    This member is added by an implicit conversion from JsonMigration to Ensuring[JsonMigration] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  12. def ensuring(cond: Boolean): JsonMigration

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    Implicit information
    This member is added by an implicit conversion from JsonMigration to Ensuring[JsonMigration] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  13. final def eq(arg0: AnyRef): Boolean

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  14. def equals(arg0: Any): Boolean

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  15. def finalize(): Unit

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    Attributes
    protected[java.lang]
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    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )

  16. def formatted(fmtstr: String): String

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    Implicit information
    This member is added by an implicit conversion from JsonMigration to StringFormat[JsonMigration] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()

  17. final def getClass(): Class[_]

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  18. def hashCode(): Int

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  19. final def isInstanceOf[T0]: Boolean

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  20. final def ne(arg0: AnyRef): Boolean

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  21. final def notify(): Unit

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  22. final def notifyAll(): Unit

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  23. final def synchronized[T0](arg0: ⇒ T0): T0

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  24. def toString(): String

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    Definition Classes
    AnyRef → Any

  25. def transform(fromVersion: Int, json: JsObject): JsObject

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    Override to provide transformation of the old JSON structure to the new JSON structure.

    Override to provide transformation of the old JSON structure to the new JSON structure.

    fromVersion

    the version of the old data

    json

    the old JSON data

  26. def transformClassName(fromVersion: Int, className: String): String

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    Override this method if you have changed the class name.

    Override this method if you have changed the class name. Return current class name.

  27. final def wait(): Unit

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    Definition Classes
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    Annotations
    @throws( ... )

  28. final def wait(arg0: Long, arg1: Int): Unit

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    @throws( ... )

  29. final def wait(arg0: Long): Unit

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    Definition Classes
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    Annotations
    @throws( ... )

  30. def →[B](y: B): (JsonMigration, B)

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    Implicit information
    This member is added by an implicit conversion from JsonMigration to ArrowAssoc[JsonMigration] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd from JsonMigration to any2stringadd[JsonMigration]

Inherited by implicit conversion StringFormat from JsonMigration to StringFormat[JsonMigration]

Inherited by implicit conversion Ensuring from JsonMigration to Ensuring[JsonMigration]

Inherited by implicit conversion ArrowAssoc from JsonMigration to ArrowAssoc[JsonMigration]

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