Hello, I get this error: `e: java.lang.IllegalSta...

# serialization

[Paulius Ruminas]

Hello,

I get this error: e: java.lang.IllegalStateException: class NewImport has duplicate serial name of property feedId, either in it or its parents. when I'm annotating a sealed class with `@Serializable`:

@Serializable
sealed class FeedOperation(open val feedId: FeedId) {

    @Serializable
    data class NewImport(override val feedId: FeedId) : FeedOperation(feedId)

    @Serializable
    data class RedoImport(override val feedId: FeedId) : FeedOperation(feedId)

    @Serializable
    data class RemoveImported(override val feedId: FeedId) : FeedOperation(feedId)
}

Are there any workarounds for this?

[Dominaezzz]

Use abstract instead of open.

[Paulius Ruminas]

The only way it works is if I do

@Serializable
sealed class FeedOperation(@Transient open val feedId: FeedId = null!!)

[Dominaezzz]

Will this do?

@Serializable
sealed class FeedOperation {
    abstract val feedId: FeedId

    @Serializable
    data class NewImport(override val feedId: FeedId) : FeedOperation()

    @Serializable
    data class RedoImport(override val feedId: FeedId) : FeedOperation()

    @Serializable
    data class RemoveImported(override val feedId: FeedId) : FeedOperation()
}

[Paulius Ruminas]

It works. Thank you. I didn't think about this.

[Paulius Ruminas]

I tried doing

@Serializable
sealed class FeedOperation(abstract val feedId: FeedId)

and it did not work