23 lines
698 B
Kotlin
23 lines
698 B
Kotlin
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package de.hpi.dbs1
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import JDBCExerciseJavaImplementation
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import JDBCExerciseKotlinImplementation
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annotation class ChosenImplementation(
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val value: Boolean
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)
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class NoSubmissionImplementationChosen : IllegalStateException(
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"Chose an implementation for your exercise by setting @ChosenImplementation(true)"
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)
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fun getChosenImplementation(): JDBCExercise {
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return listOf(
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JDBCExerciseJavaImplementation::class.java,
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JDBCExerciseKotlinImplementation::class.java,
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).firstOrNull { clazz ->
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clazz.getAnnotation(ChosenImplementation::class.java)?.value ?: false
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}?.getDeclaredConstructor()?.newInstance()
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?: throw NoSubmissionImplementationChosen()
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}
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