Created
January 12, 2018 14:23
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Sample malfunctioning transaction usecase
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| fun <T : Any> Observable<List<T>>.replaceInLocalRepo(localRepository: Repository<T>, | |
| localSpecification: Specification): Observable<List<T>> = | |
| this.flatMapSingle { incomingEntities -> | |
| runInTransactionSingle { | |
| incomingEntities | |
| .asSingle() | |
| .flatMap { | |
| localRepository | |
| .remove(localSpecification) | |
| .toSingleDefault(incomingEntities) | |
| .onErrorReturn { | |
| it.printAndReport() | |
| incomingEntities | |
| } | |
| } | |
| .flatMap { | |
| localRepository | |
| .add(incomingEntities) | |
| .toSingleDefault(incomingEntities) | |
| .onErrorReturn { | |
| it.printAndReport() | |
| incomingEntities | |
| } | |
| } | |
| } | |
| } | |
| private fun <T : Any> runInTransactionSingle(transactionBody: ((DatabaseWrapper) -> Single<T>)) = | |
| Single.create<T> { emitter -> | |
| FlowManager.getDatabase(SampleDatabase::class.java) | |
| .executeTransaction { | |
| transactionBody(it) | |
| .subscribeBy( | |
| onSuccess = { emitter.onSuccess(it) }, | |
| onError = { emitter.onError(it) }) | |
| } | |
| }.subscribeOn(Schedulers.computation())!! |
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