docs: Scala Replicated Entity docs#635
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johanandren merged 1 commit intomainfrom Oct 15, 2021
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patriknw
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Oct 15, 2021
patriknw
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- includes the first part, Shopping Cart sample
* includes the first part, Shopping Cart sample
johanandren
reviewed
Oct 15, 2021
| == Implementing behavior | ||
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| A Replicated Entity implementation is a Java class where you define how each command is handled. The class `ShoppingCart` gets generated for us based on the `shoppingcart_api.proto` and `shoppingcart_domain.proto` definitions. Once the `ShoppingCart.java` file exist, it is not overwritten, so you can freely add logic to it. `ShoppingCart` extends the generated class `AbstractShoppingCart` which we're not supposed to change as it gets regenerated in case we update the protobuf descriptors. `AbstractShoppingCart` contains all method signatures corresponding to the API of the service. If you change the API you will see compilation errors in the `ShoppingCart` class and you have to implement the methods required by `AbstractShoppingCart`. | ||
| A Replicated Entity implementation is a Java class where you define how each command is handled. The class `ShoppingCart` gets generated for us based on the `shoppingcart_api.proto` and `shoppingcart_domain.proto` definitions. Once the [.group-java]#`ShoppingCart.java`# [.group-scala]# file `ShoppingCart.scala`# exist, it is not overwritten, so you can freely add logic to it. `ShoppingCart` extends the generated class `AbstractShoppingCart` which we're not supposed to change as it gets regenerated in case we update the protobuf descriptors. `AbstractShoppingCart` contains all method signatures corresponding to the API of the service. If you change the API you will see compilation errors in the `ShoppingCart` class and you have to implement the methods required by `AbstractShoppingCart`. |
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Oh, neat, I didn't know it is possible to switch in-text-things with [.group-java]# like that
johanandren
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Oct 15, 2021
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