How to map object of one class to another class with EF code first TPH
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Scenario
I have e.g. abstract class called Quiz and two children of this Quiz: SingleAnswerQuiz and MultipleAnswerQuiz. I map this model into Table per hierarchy with entity framework.
Problem
Is there any way to change one SingleAnswerQuiz type to MultipleAnswerQuiz? I do not want to delete single quiz and create multiple with data of deleted quiz. I want to have the same id after "mapping". Should I use Discriminator?
c# entity-framework tph
asked Nov 20 at 13:47
zolty13
9910
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up vote
0
down vote
favorite
Scenario
I have e.g. abstract class called Quiz and two children of this Quiz: SingleAnswerQuiz and MultipleAnswerQuiz. I map this model into Table per hierarchy with entity framework.
Problem
Is there any way to change one SingleAnswerQuiz type to MultipleAnswerQuiz? I do not want to delete single quiz and create multiple with data of deleted quiz. I want to have the same id after "mapping". Should I use Discriminator?
c# entity-framework tph
asked Nov 20 at 13:47
zolty13
9910
Can you provide the code defining the objects?
– Richard Boyce
Nov 20 at 16:13
it is not necessary, it is just kind of proof of concept
– zolty13
Nov 21 at 6:57
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
Scenario
I have e.g. abstract class called Quiz and two children of this Quiz: SingleAnswerQuiz and MultipleAnswerQuiz. I map this model into Table per hierarchy with entity framework.
Problem
Is there any way to change one SingleAnswerQuiz type to MultipleAnswerQuiz? I do not want to delete single quiz and create multiple with data of deleted quiz. I want to have the same id after "mapping". Should I use Discriminator?
c# entity-framework tph
asked Nov 20 at 13:47
zolty13
9910
Scenario
I have e.g. abstract class called Quiz and two children of this Quiz: SingleAnswerQuiz and MultipleAnswerQuiz. I map this model into Table per hierarchy with entity framework.
Problem
Is there any way to change one SingleAnswerQuiz type to MultipleAnswerQuiz? I do not want to delete single quiz and create multiple with data of deleted quiz. I want to have the same id after "mapping". Should I use Discriminator?
c# entity-framework tph
c# entity-framework tph
asked Nov 20 at 13:47
zolty13
9910
asked Nov 20 at 13:47
zolty13
9910
edited Nov 20 at 13:55
asked Nov 20 at 13:47
zolty13
9910
asked Nov 20 at 13:47
zolty13
9910
asked Nov 20 at 13:47
zolty13
9910
9910
Can you provide the code defining the objects?
– Richard Boyce
Nov 20 at 16:13
it is not necessary, it is just kind of proof of concept
– zolty13
Nov 21 at 6:57
add a comment |
Can you provide the code defining the objects?
– Richard Boyce
Nov 20 at 16:13
it is not necessary, it is just kind of proof of concept
– zolty13
Nov 21 at 6:57
Can you provide the code defining the objects?
– Richard Boyce
Nov 20 at 16:13
Can you provide the code defining the objects?
– Richard Boyce
Nov 20 at 16:13
it is not necessary, it is just kind of proof of concept
– zolty13
Nov 21 at 6:57
it is not necessary, it is just kind of proof of concept
– zolty13
Nov 21 at 6:57
add a comment |
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Can you provide the code defining the objects?
– Richard Boyce
Nov 20 at 16:13
it is not necessary, it is just kind of proof of concept
– zolty13
Nov 21 at 6:57