# MapperWriteKeyValueRepo

open class MapperWriteKeyValueRepo < FromKey , FromValue , ToKey , ToValue >(to: WriteKeyValueRepo < ToKey , ToValue >, mapper: MapperRepo < FromKey , FromValue , ToKey , ToValue >) : WriteKeyValueRepo < FromKey , FromValue > , MapperRepo < FromKey , FromValue , ToKey , ToValue > (source)

Write-only key-value repository adapter that applies type mapping via MapperRepo. Converts outer (From) key/value types to inner (To) types before delegating writes to to, and maps emitted flow values back from inner to outer types.

#### Parameters

to

The underlying WriteKeyValueRepo to delegate operations to

mapper

The MapperRepo providing bidirectional key/value type conversions

#### Type Parameters

FromKey

The outer key type exposed by this repo

FromValue

The outer value type exposed by this repo

ToKey

The inner key type used by the underlying to repo

ToValue

The inner value type used by the underlying to repo

## Constructors

MapperWriteKeyValueRepo
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constructor(to: WriteKeyValueRepo < ToKey , ToValue >, mapper: MapperRepo < FromKey , FromValue , ToKey , ToValue >)

## Properties

keyMapper
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open override val keyMapper : SimpleSuspendableMapper < FromKey , ToKey >

Provides a mapper for converting keys between inner and outer types.

onNewValue
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open override val onNewValue : Flow< Pair < FromKey , FromValue >>

This flow must emit data each time when data by Key has been changed with set method or in any other way excluding cases of data removing

onValueRemoved
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open override val onValueRemoved : Flow< FromKey >

This flow must emit data each time when data by Key has been removed with unset/unsetWithValues methods or in any other way

valueMapper
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open override val valueMapper : SimpleSuspendableMapper < FromValue , ToValue >

Provides a mapper for converting values between inner and outer types.

## Functions

caching
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fun < Key , Value > WriteKeyValueRepo < Key , Value >. caching (kvCache: KeyValueRepo < Key , Value >, scope: CoroutineScope = CoroutineScope(Dispatchers.Default)): FullWriteKeyValueCacheRepo < Key , Value >
directlyCached
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fun < Key , Value > WriteKeyValueRepo < Key , Value >. directlyCached (kvCache: KeyValueRepo < Key , Value >, scope: CoroutineScope = CoroutineScope(Dispatchers.Default)): DirectFullWriteKeyValueCacheRepo < Key , Value >
set
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open suspend override fun set (toSet: Map < FromKey , FromValue >)

Will set as batch toSet data in current repo. Must pass the data which were successfully updated in repo to onNewValue

set
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inline suspend fun < Key , Value > WriteKeyValueRepo < Key , Value >. set (toSet: List < Pair < Key , Value >>)

List overload of WriteKeyValueRepo.set accepting a list of pairs.

inline suspend fun < Key , Value > WriteKeyValueRepo < Key , Value >. set (vararg toSet: Pair < Key , Value >)

Vararg overload of WriteKeyValueRepo.set accepting pairs.

inline suspend fun < Key , Value > WriteKeyValueRepo < Key , Value >. set (k: Key , v: Value )

Single-entry overload of WriteKeyValueRepo.set.

toInnerKey
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open suspend override fun ToKey . toInnerKey (): FromKey

Converts a key from the outer type to the inner type.

toInnerValue
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open suspend override fun ToValue . toInnerValue (): FromValue

Converts a value from the outer type to the inner type.

toOutKey
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open suspend override fun FromKey . toOutKey (): ToKey

Converts a key from the inner type to the outer type.

toOutValue
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open suspend override fun FromValue . toOutValue (): ToValue

Converts a value from the inner type to the outer type.

unset
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open suspend override fun unset (toUnset: List < FromKey >)

Will unset as batch data with keys from toUnset. Must pass the Keys which were successfully removed in repo to onValueRemoved

unset
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inline suspend fun < Key , Value > WriteKeyValueRepo < Key , Value >. unset (vararg k: Key )

Vararg overload of WriteKeyValueRepo.unset.

unsetWithValues
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open suspend override fun unsetWithValues (toUnset: List < FromValue >)

Will unset as batch data with values from toUnset. Must pass the Keys which were successfully removed in repo to onValueRemoved

unsetWithValues
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inline suspend fun < Key , Value > WriteKeyValueRepo < Key , Value >. unsetWithValues (vararg v: Value )

Vararg overload of WriteKeyValueRepo.unsetWithValues.

withMapper
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inline fun < FromKey , FromValue , ToKey , ToValue > WriteKeyValueRepo < ToKey , ToValue >. withMapper (mapper: MapperRepo < FromKey , FromValue , ToKey , ToValue >): WriteKeyValueRepo < FromKey , FromValue >

Wraps this WriteKeyValueRepo with a MapperRepo to expose a mapped WriteKeyValueRepo.

inline fun < FromKey , FromValue , ToKey , ToValue > WriteKeyValueRepo < ToKey , ToValue >. withMapper (noinline keyFromToTo: suspend FromKey .() -> ToKey = { this as ToKey }, noinline valueFromToTo: suspend FromValue .() -> ToValue = { this as ToValue }, noinline keyToToFrom: suspend ToKey .() -> FromKey = { this as FromKey }, noinline valueToToFrom: suspend ToValue .() -> FromValue = { this as FromValue }): WriteKeyValueRepo < FromKey , FromValue >

Wraps this WriteKeyValueRepo with inline conversion lambdas to expose a mapped WriteKeyValueRepo.