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package io.dico.parcels2.storage
import io.dico.parcels2.*
import kotlinx.coroutines.experimental.channels.SendChannel
import java.util.UUID
interface Backing {
val name: String
val isConnected: Boolean
suspend fun init()
suspend fun shutdown()
/**
* This producer function is capable of constantly reading parcels from a potentially infinite sequence,
* and provide parcel data for it as read from the database.
*/
suspend fun produceParcelData(channel: SendChannel<DataPair>, parcels: Sequence<ParcelId>)
suspend fun produceAllParcelData(channel: SendChannel<DataPair>)
suspend fun readParcelData(parcel: ParcelId): ParcelData?
suspend fun getOwnedParcels(user: ParcelOwner): List<ParcelId>
suspend fun getNumParcels(user: ParcelOwner): Int = getOwnedParcels(user).size
suspend fun setParcelData(parcel: ParcelId, data: ParcelData?)
suspend fun setParcelOwner(parcel: ParcelId, owner: ParcelOwner?)
suspend fun setLocalPlayerStatus(parcel: ParcelId, player: UUID, status: AddedStatus)
suspend fun setParcelAllowsInteractInventory(parcel: ParcelId, value: Boolean)
suspend fun setParcelAllowsInteractInputs(parcel: ParcelId, value: Boolean)
suspend fun produceAllGlobalAddedData(channel: SendChannel<AddedDataPair<ParcelOwner>>)
suspend fun readGlobalAddedData(owner: ParcelOwner): MutableAddedDataMap
suspend fun setGlobalPlayerStatus(owner: ParcelOwner, player: UUID, status: AddedStatus)
}
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