Scala Defining Case Classess Fro Nested Struct Type
Feb 24, 2018 - Problem: I have a nested data structure and I wrote couple of Case classes to define them. But how can I generate StructType schema from.
Case class Message ( sender: String, recipient: String, body: String ) val message2 = Message ( 'jorge@catalonia.es', 'guillaume@quebec.ca', 'Com va?' ) val message3 = Message ( 'jorge@catalonia.es', 'guillaume@quebec.ca', 'Com va?' ) val messagesAreTheSame = message2 message3 // trueEven though message2 and message3 refer to different objects, the value of each object is equal. CopyingYou can create a (shallow) copy of an instance of a case class simply by using the copy method. You can optionally change the constructor arguments. Case class Message ( sender: String, recipient: String, body: String ) val message4 = Message ( 'julien@bretagne.fr', 'travis@washington.us', 'Me zo o komz gant ma amezeg' ) val message5 = message4.
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- StructType is used to define a schema or its part. Generating a schema from a case class // Because we're all properly lazy case class Person(id: Long, name:.
Copy ( sender = message4. Recipient, recipient = 'claire@bourgogne.fr' ) message5.
Scala Defining Case Classess Fro Nested Struct Type In Math
Sender // travis@washington.usmessage5. Recipient // claire@bourgogne.frmessage5. Body // 'Me zo o komz gant ma amezeg'The recipient of message4 is used as the sender of message5 but the body of message4 was copied directly.