wrap with trycatch StateFlowBasedRecyclerViewAdapter listener

0.5.11

.github/workflows/build.yml

@@ -0,0 +1,12 @@
+name: Regular build
+on: [push]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-java@v1
+        with:
+          java-version: 1.8
+      - name: Build
+        run: ./gradlew build

CHANGELOG.md

@@ -1,5 +1,62 @@
 # Changelog
 
+## 0.5.12
+
+* `Common`:
+    * `Android`
+        * Extension `View#changeVisibility` has been fixed
+* `Android`
+    * `RecyclerView`
+        * Default adapter got `dataCountFlow` property
+        * New subtype of adapter based on `StateFlow`: `StateFlowBasedRecyclerViewAdapter`
+
+## 0.5.11
+
+* `Repos`:
+    * `Common`:
+        * Fixes in `WriteOneToManyRepo#add`
+    * `Exposed`:
+        * Fixes in `ExposedOneToManyKeyValueRepo#add`
+
+## 0.5.10
+
+* `Versions`
+    * `Core KTX`: `1.3.2` -> `1.5.0`
+    * `AndroidX Recycler`: `1.2.0` -> `1.2.1`
+    * `AppCompat`: `1.2.0` -> `1.3.0`
+* `Android`
+    * `RecyclerView`:
+        * `data` of `RecyclerViewAdapter` became an abstract field
+            * New function `RecyclerViewAdapter`
+    * `Common`:
+        * New extension `View#changeVisibility`
+    * `Repos`:
+        * `Common`:
+            * `WriteOneToManyRepo` got new function `clearWithValue`
+            * `Android`:
+                * New extension `SQLiteDatabase#selectDistinct`
+                * Fixes in `OneToManyAndroidRepo`
+* `Ktor`
+    * `Server`
+        * All elements in configurators became a `fun interface`
+* `Pagination`
+    * New function `doForAllWithCurrentPaging`
+
+## 0.5.9
+
+* `Repos`
+    * `Common`
+        * `OneToManyAndroidRepo` got new primary constructor
+
+## 0.5.8
+
+* `Common`:
+    * New extension `Iterable#firstNotNull`
+* `Coroutines`
+    * New extension `Flow#firstNotNull`
+    * New extensions `CoroutineContext#LinkedSupervisorJob`, `CoroutineScope#LinkedSupervisorJob` and
+      `CoroutineScope#LinkedSupervisorScope`
+
 ## 0.5.7
 
 * `Pagination`

android/alerts/recyclerview/src/main/kotlin/dev/inmo/micro_utils/android/alerts/recyclerview/ActionsAlerts.kt

@@ -35,9 +35,9 @@ class ActionViewHolder(
 }
 
 class ActionsRecyclerViewAdapter(
-    data: List<AlertAction>,
+    override val data: List<AlertAction>,
     private val dialogInterfaceGetter: () -> DialogInterface
-) : RecyclerViewAdapter<AlertAction>(data) {
+) : RecyclerViewAdapter<AlertAction>() {
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): AbstractViewHolder<AlertAction> = ActionViewHolder(
         parent, dialogInterfaceGetter
     )

android/recyclerview/build.gradle

@@ -11,6 +11,7 @@ kotlin {
         commonMain {
             dependencies {
                 api "org.jetbrains.kotlinx:kotlinx-coroutines-core:$kotlin_coroutines_version"
+                api project(":micro_utils.common")
             }
         }
         androidMain {

android/recyclerview/src/main/kotlin/dev/inmo/micro_utils/android/recyclerview/RecyclerViewAdapter.kt

@@ -1,12 +1,21 @@
 package dev.inmo.micro_utils.android.recyclerview
 
 import android.view.View
+import android.view.ViewGroup
 import androidx.recyclerview.widget.RecyclerView
+import kotlinx.coroutines.flow.*
 
 
-abstract class RecyclerViewAdapter<T>(
+abstract class RecyclerViewAdapter<T>: RecyclerView.Adapter<AbstractViewHolder<T>>() {
-    val data: List<T>
+    protected abstract val data: List<T>
-): RecyclerView.Adapter<AbstractViewHolder<T>>() {
+
+    private val _dataCountState by lazy {
+        MutableStateFlow<Int>(data.size)
+    }
+    val dataCountState: StateFlow<Int> by lazy {
+        _dataCountState.asStateFlow()
+    }
+
     var emptyView: View? = null
         set(value) {
             field = value
@@ -18,31 +27,37 @@ abstract class RecyclerViewAdapter<T>(
             object : RecyclerView.AdapterDataObserver() {
                 override fun onItemRangeChanged(positionStart: Int, itemCount: Int) {
                     super.onItemRangeChanged(positionStart, itemCount)
+                    _dataCountState.value = data.size
                     checkEmpty()
                 }
 
                 override fun onItemRangeChanged(positionStart: Int, itemCount: Int, payload: Any?) {
                     super.onItemRangeChanged(positionStart, itemCount, payload)
+                    _dataCountState.value = data.size
                     checkEmpty()
                 }
 
                 override fun onChanged() {
                     super.onChanged()
+                    _dataCountState.value = data.size
                     checkEmpty()
                 }
 
                 override fun onItemRangeRemoved(positionStart: Int, itemCount: Int) {
                     super.onItemRangeRemoved(positionStart, itemCount)
+                    _dataCountState.value = data.size
                     checkEmpty()
                 }
 
                 override fun onItemRangeMoved(fromPosition: Int, toPosition: Int, itemCount: Int) {
                     super.onItemRangeMoved(fromPosition, toPosition, itemCount)
+                    _dataCountState.value = data.size
                     checkEmpty()
                 }
 
                 override fun onItemRangeInserted(positionStart: Int, itemCount: Int) {
                     super.onItemRangeInserted(positionStart, itemCount)
+                    _dataCountState.value = data.size
                     checkEmpty()
                 }
             }
@@ -58,7 +73,7 @@ abstract class RecyclerViewAdapter<T>(
 
     private fun checkEmpty() {
         emptyView ?. let {
-            if (data.isEmpty()) {
+            if (dataCountState.value == 0) {
                 it.visibility = View.VISIBLE
             } else {
                 it.visibility = View.GONE
@@ -66,3 +81,11 @@ abstract class RecyclerViewAdapter<T>(
         }
     }
 }
+
+fun <T> RecyclerViewAdapter(
+    data: List<T>,
+    onCreateViewHolder: (parent: ViewGroup, viewType: Int) -> AbstractViewHolder<T>
+) = object : RecyclerViewAdapter<T>() {
+    override val data: List<T> = data
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): AbstractViewHolder<T> = onCreateViewHolder(parent, viewType)
+}

android/recyclerview/src/main/kotlin/dev/inmo/micro_utils/android/recyclerview/StateFlowBasedRecyclerViewAdapter.kt

@@ -0,0 +1,50 @@
+package dev.inmo.micro_utils.android.recyclerview
+
+import dev.inmo.micro_utils.common.Diff
+import dev.inmo.micro_utils.common.PreviewFeature
+import kotlinx.coroutines.*
+import kotlinx.coroutines.flow.*
+
+@PreviewFeature("This feature in preview state and may contains different bugs. " +
+                "Besides, this feature can be changed in future in non-compatible way")
+abstract class StateFlowBasedRecyclerViewAdapter<T>(
+    listeningScope: CoroutineScope,
+    dataState: StateFlow<List<T>>
+) : RecyclerViewAdapter<T>() {
+    override var data: List<T> = emptyList()
+
+    init {
+        dataState.onEach {
+            try {
+                val diffForRemoves = Diff(data, it)
+                val removedIndexes = diffForRemoves.removed.map { it.index }
+                val leftRemove = removedIndexes.toMutableList()
+                data = data.filterIndexed { i, _ ->
+                    if (i in leftRemove) {
+                        leftRemove.remove(i)
+                        true
+                    } else {
+                        false
+                    }
+                }
+                withContext(Dispatchers.Main) {
+                    removedIndexes.sortedDescending().forEach {
+                        notifyItemRemoved(it)
+                    }
+                }
+                val diffAddsAndReplaces = Diff(data, it)
+                data = it
+                withContext(Dispatchers.Main) {
+                    diffAddsAndReplaces.replaced.forEach { (from, to) ->
+                        notifyItemMoved(from.index, to.index)
+                    }
+                    diffAddsAndReplaces.added.forEach {
+                        notifyItemInserted(it.index)
+                    }
+                }
+            } catch (e: Throwable) {
+                // currently do nothing
+            }
+        }.launchIn(listeningScope)
+    }
+}

common/src/commonMain/kotlin/dev/inmo/micro_utils/common/Annotations.kt

@@ -16,7 +16,7 @@ package dev.inmo.micro_utils.common
     AnnotationTarget.TYPEALIAS,
     AnnotationTarget.TYPE_PARAMETER
 )
-annotation class PreviewFeature
+annotation class PreviewFeature(val message: String = "It is possible, that behaviour of this thing will be changed or removed in future releases")
 
 @RequiresOptIn(
     "This thing is marked as warned. See message of warn to get more info",

common/src/commonMain/kotlin/dev/inmo/micro_utils/common/IterableFirstNotNull.kt

@@ -0,0 +1,3 @@
+package dev.inmo.micro_utils.common
+
+fun <T> Iterable<T?>.firstNotNull() = first { it != null }!!

common/src/main/kotlin/dev/inmo/micro_utils/common/ViewVisibility.kt

@@ -33,3 +33,15 @@ fun View.toggleVisibility(goneOnHide: Boolean = true) {
         show()
     }
 }
+
+fun View.changeVisibility(show: Boolean = !isShown, goneOnHide: Boolean = true) {
+    if (show) {
+        show()
+    } else {
+        if (goneOnHide) {
+            gone()
+        } else {
+            hide()
+        }
+    }
+}

coroutines/src/commonMain/kotlin/dev/inmo/micro_utils/coroutines/FlowFirstNotNull.kt

@@ -0,0 +1,6 @@
+package dev.inmo.micro_utils.coroutines
+
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.first
+
+suspend fun <T> Flow<T?>.firstNotNull() = first { it != null }!!

coroutines/src/commonMain/kotlin/dev/inmo/micro_utils/coroutines/SupervisorJob.kt

@@ -0,0 +1,17 @@
+package dev.inmo.micro_utils.coroutines
+
+import kotlinx.coroutines.*
+import kotlin.coroutines.CoroutineContext
+
+fun CoroutineContext.LinkedSupervisorJob(
+    additionalContext: CoroutineContext? = null
+) = SupervisorJob(job).let { if (additionalContext != null) it + additionalContext else it }
+fun CoroutineScope.LinkedSupervisorJob(
+    additionalContext: CoroutineContext? = null
+) = coroutineContext.LinkedSupervisorJob(additionalContext)
+
+fun CoroutineScope.LinkedSupervisorScope(
+    additionalContext: CoroutineContext? = null
+) = CoroutineScope(
+    coroutineContext + LinkedSupervisorJob(additionalContext)
+)

gradle.properties

@@ -22,9 +22,9 @@ uuidVersion=0.3.0
 
 # ANDROID
 
-core_ktx_version=1.3.2
+core_ktx_version=1.5.0
-androidx_recycler_version=1.2.0
+androidx_recycler_version=1.2.1
-appcompat_version=1.2.0
+appcompat_version=1.3.0
 
 android_minSdkVersion=19
 android_compileSdkVersion=30
@@ -45,5 +45,5 @@ dokka_version=1.4.32
 # Project data
 
 group=dev.inmo
-version=0.5.7
+version=0.5.12
-android_code_version=48
+android_code_version=53

ktor/server/src/jvmMain/kotlin/dev/inmo/micro_utils/ktor/server/configurators/ApplicationCachingHeadersConfigurator.kt

@@ -8,7 +8,7 @@ import kotlinx.serialization.Contextual
 data class ApplicationCachingHeadersConfigurator(
     private val elements: List<@Contextual Element>
 ) : KtorApplicationConfigurator {
-    interface Element { operator fun CachingHeaders.Configuration.invoke() }
+    fun interface Element { operator fun CachingHeaders.Configuration.invoke() }
 
     override fun Application.configure() {
         install(CachingHeaders) {

ktor/server/src/jvmMain/kotlin/dev/inmo/micro_utils/ktor/server/configurators/ApplicationRoutingConfigurator.kt

@@ -10,17 +10,18 @@ import kotlinx.serialization.Serializable
 class ApplicationRoutingConfigurator(
     private val elements: List<@Contextual Element>
 ) : KtorApplicationConfigurator {
-    interface Element { operator fun Route.invoke() }
+    fun interface Element { operator fun Route.invoke() }
+    private val rootInstaller = Element {
+        elements.forEach {
+            it.apply { invoke() }
+        }
+    }
 
     override fun Application.configure() {
-        try {
+        featureOrNull(Routing) ?.apply {
-            feature(Routing)
+            rootInstaller.apply { invoke() }
-        } catch (e: IllegalStateException) {
+        } ?: install(Routing) {
-            install(Routing) {
+            rootInstaller.apply { invoke() }
-                elements.forEach {
-                    it.apply { invoke() }
-                }
-            }
         }
     }
 }

ktor/server/src/jvmMain/kotlin/dev/inmo/micro_utils/ktor/server/configurators/ApplicationSessionsConfigurator.kt

@@ -8,7 +8,7 @@ import kotlinx.serialization.Contextual
 class ApplicationSessionsConfigurator(
     private val elements: List<@Contextual Element>
 ) : KtorApplicationConfigurator {
-    interface Element { operator fun Sessions.Configuration.invoke() }
+    fun interface Element { operator fun Sessions.Configuration.invoke() }
 
     override fun Application.configure() {
         install(Sessions) {

ktor/server/src/jvmMain/kotlin/dev/inmo/micro_utils/ktor/server/configurators/StatusPagesConfigurator.kt

@@ -8,7 +8,7 @@ import kotlinx.serialization.Contextual
 class StatusPagesConfigurator(
     private val elements: List<@Contextual Element>
 ) : KtorApplicationConfigurator {
-    interface Element { operator fun StatusPages.Configuration.invoke() }
+    fun interface Element { operator fun StatusPages.Configuration.invoke() }
 
     override fun Application.configure() {
         install(StatusPages) {

pagination/common/src/commonMain/kotlin/dev/inmo/micro_utils/pagination/utils/DoForAll.kt

@@ -33,3 +33,8 @@ suspend fun <T> doAllWithCurrentPaging(
         block
     )
 }
+
+suspend fun <T> doForAllWithCurrentPaging(
+    initialPagination: Pagination = FirstPagePagination(),
+    block: suspend (Pagination) -> PaginationResult<T>
+) = doAllWithCurrentPaging(initialPagination, block)

repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/OneToManyKeyValueRepo.kt

@@ -1,6 +1,7 @@
 package dev.inmo.micro_utils.repos
 
 import dev.inmo.micro_utils.pagination.*
+import dev.inmo.micro_utils.pagination.utils.doForAllWithCurrentPaging
 import dev.inmo.micro_utils.pagination.utils.getAllWithNextPaging
 import kotlinx.coroutines.flow.Flow
 
@@ -47,6 +48,7 @@ interface WriteOneToManyKeyValueRepo<Key, Value> : Repo {
     suspend fun remove(toRemove: Map<Key, List<Value>>)
 
     suspend fun clear(k: Key)
+    suspend fun clearWithValue(v: Value)
 
     suspend fun set(toSet: Map<Key, List<Value>>) {
         toSet.keys.forEach { key -> clear(key) }
@@ -87,7 +89,19 @@ suspend inline fun <Key, Value> WriteOneToManyKeyValueRepo<Key, Value>.set(
     k: Key, vararg v: Value
 ) = set(k, v.toList())
 
-interface OneToManyKeyValueRepo<Key, Value> : ReadOneToManyKeyValueRepo<Key, Value>, WriteOneToManyKeyValueRepo<Key, Value>
+interface OneToManyKeyValueRepo<Key, Value> : ReadOneToManyKeyValueRepo<Key, Value>, WriteOneToManyKeyValueRepo<Key, Value> {
+    override suspend fun clearWithValue(v: Value) {
+        doWithPagination {
+            val keysResult = keys(v, it)
+
+            if (keysResult.results.isNotEmpty()) {
+                remove(keysResult.results.map { it to listOf(v) })
+            }
+
+            keysResult.currentPageIfNotEmpty()
+        }
+    }
+}
 typealias KeyValuesRepo<Key,Value> = OneToManyKeyValueRepo<Key, Value>
 
 suspend inline fun <Key, Value> WriteOneToManyKeyValueRepo<Key, Value>.remove(

repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/mappers/OneToManyKeyValueMappers.kt

@@ -114,6 +114,7 @@ open class MapperWriteOneToManyKeyValueRepo<FromKey, FromValue, ToKey, ToValue>(
     }
 
     override suspend fun clear(k: FromKey) = to.clear(k.toOutKey())
+    override suspend fun clearWithValue(v: FromValue) = to.clearWithValue(v.toOutValue())
 }
 
 @Suppress("NOTHING_TO_INLINE")

repos/common/src/main/kotlin/dev/inmo/micro_utils/repos/DatabaseOperations.kt

@@ -74,6 +74,19 @@ fun SQLiteDatabase.select(
     table, columns, selection, selectionArgs, groupBy, having, orderBy, limit
 )
 
+fun SQLiteDatabase.selectDistinct(
+    table: String,
+    columns: Array<String>? = null,
+    selection: String? = null,
+    selectionArgs: Array<String>? = null,
+    groupBy: String? = null,
+    having: String? = null,
+    orderBy: String? = null,
+    limit: String? = null
+) = query(
+    true, table, columns, selection, selectionArgs, groupBy, having, orderBy, limit
+)
+
 fun makePlaceholders(count: Int): String {
     return (0 until count).joinToString { "?" }
 }

repos/common/src/main/kotlin/dev/inmo/micro_utils/repos/onetomany/OneToManyAndroidRepo.kt

@@ -3,10 +3,7 @@ package dev.inmo.micro_utils.repos.onetomany
 import android.database.sqlite.SQLiteOpenHelper
 import androidx.core.content.contentValuesOf
 import dev.inmo.micro_utils.common.mapNotNullA
-import dev.inmo.micro_utils.pagination.FirstPagePagination
+import dev.inmo.micro_utils.pagination.*
-import dev.inmo.micro_utils.pagination.Pagination
-import dev.inmo.micro_utils.pagination.PaginationResult
-import dev.inmo.micro_utils.pagination.createPaginationResult
 import dev.inmo.micro_utils.pagination.utils.reverse
 import dev.inmo.micro_utils.repos.*
 import kotlinx.coroutines.flow.Flow
@@ -20,10 +17,14 @@ private val internalSerialFormat = Json {
     ignoreUnknownKeys = true
 }
 
+typealias KeyValuesAndroidRepo<Key, Value> = OneToManyAndroidRepo<Key, Value>
+
 class OneToManyAndroidRepo<Key, Value>(
     private val tableName: String,
-    private val keySerializer: KSerializer<Key>,
+    private val keyAsString: Key.() -> String,
-    private val valueSerializer: KSerializer<Value>,
+    private val valueAsString: Value.() -> String,
+    private val keyFromString: String.() -> Key,
+    private val valueFromString: String.() -> Value,
     private val helper: SQLiteOpenHelper
 ) : OneToManyKeyValueRepo<Key, Value> {
     private val _onNewValue: MutableSharedFlow<Pair<Key, Value>> = MutableSharedFlow()
@@ -34,12 +35,9 @@ class OneToManyAndroidRepo<Key, Value>(
     override val onDataCleared: Flow<Key> = _onDataCleared.asSharedFlow()
 
     private val idColumnName = "id"
+    private val idColumnArray = arrayOf(idColumnName)
     private val valueColumnName = "value"
-
+    private val valueColumnArray = arrayOf(valueColumnName)
-    private fun Key.asId() = internalSerialFormat.encodeToString(keySerializer, this)
-    private fun Value.asValue() = internalSerialFormat.encodeToString(valueSerializer, this)
-    private fun String.asValue(): Value = internalSerialFormat.decodeFromString(valueSerializer, this)
-    private fun String.asKey(): Key = internalSerialFormat.decodeFromString(keySerializer, this)
 
     init {
         helper.blockingWritableTransaction {
@@ -57,12 +55,23 @@ class OneToManyAndroidRepo<Key, Value>(
         helper.blockingWritableTransaction {
             for ((k, values) in toAdd) {
                 values.forEach { v ->
+                    val kAsString = k.keyAsString()
+                    val vAsString = v.valueAsString()
+                    val isThere = select(tableName,
+                        null,
+                        "$idColumnName=? AND $valueColumnName=?",
+                        arrayOf(kAsString, vAsString),
+                        limit = limitClause(1)
+                    ).use { it.moveToFirst() }
+                    if (isThere) {
+                        return@forEach
+                    }
                     insert(
                         tableName,
                         null,
                         contentValuesOf(
-                            idColumnName to k.asId(),
+                            idColumnName to k.keyAsString(),
-                            valueColumnName to v.asValue()
+                            valueColumnName to v.valueAsString()
                         )
                     ).also {
                         if (it != -1L) {
@@ -77,7 +86,7 @@ class OneToManyAndroidRepo<Key, Value>(
 
     override suspend fun clear(k: Key) {
         helper.blockingWritableTransaction {
-            delete(tableName, "$idColumnName=?", arrayOf(k.asId()))
+            delete(tableName, "$idColumnName=?", arrayOf(k.keyAsString()))
         }.also {
             if (it > 0) {
                 _onDataCleared.emit(k)
@@ -88,7 +97,7 @@ class OneToManyAndroidRepo<Key, Value>(
     override suspend fun set(toSet: Map<Key, List<Value>>) {
         val (clearedKeys, inserted) = helper.blockingWritableTransaction {
             toSet.mapNotNull { (k, _) ->
-                if (delete(tableName, "$idColumnName=?", arrayOf(k.asId())) > 0) {
+                if (delete(tableName, "$idColumnName=?", arrayOf(k.keyAsString())) > 0) {
                     k
                 } else {
                     null
@@ -98,7 +107,7 @@ class OneToManyAndroidRepo<Key, Value>(
                     insert(
                         tableName,
                         null,
-                        contentValuesOf(idColumnName to k.asId(), valueColumnName to v.asValue())
+                        contentValuesOf(idColumnName to k.keyAsString(), valueColumnName to v.valueAsString())
                     )
                     k to v
                 }
@@ -109,7 +118,7 @@ class OneToManyAndroidRepo<Key, Value>(
     }
 
     override suspend fun contains(k: Key): Boolean = helper.blockingReadableTransaction {
-        select(tableName, selection = "$idColumnName=?", selectionArgs = arrayOf(k.asId()), limit = FirstPagePagination(1).limitClause()).use {
+        select(tableName, selection = "$idColumnName=?", selectionArgs = arrayOf(k.keyAsString()), limit = firstPageWithOneElementPagination.limitClause()).use {
             it.count > 0
         }
     }
@@ -118,14 +127,14 @@ class OneToManyAndroidRepo<Key, Value>(
         select(
             tableName,
             selection = "$idColumnName=? AND $valueColumnName=?",
-            selectionArgs = arrayOf(k.asId(), v.asValue()),
+            selectionArgs = arrayOf(k.keyAsString(), v.valueAsString()),
             limit = FirstPagePagination(1).limitClause()
         ).use {
             it.count > 0
         }
     }
 
-    override suspend fun count(): Long =helper.blockingReadableTransaction {
+    override suspend fun count(): Long = helper.blockingReadableTransaction {
         select(
             tableName
         ).use {
@@ -134,7 +143,7 @@ class OneToManyAndroidRepo<Key, Value>(
     }.toLong()
 
     override suspend fun count(k: Key): Long = helper.blockingReadableTransaction {
-        select(tableName, selection = "$idColumnName=?", selectionArgs = arrayOf(k.asId()), limit = FirstPagePagination(1).limitClause()).use {
+        selectDistinct(tableName, columns = valueColumnArray, selection = "$idColumnName=?", selectionArgs = arrayOf(k.keyAsString()), limit = FirstPagePagination(1).limitClause()).use {
             it.count
         }
     }.toLong()
@@ -144,18 +153,25 @@ class OneToManyAndroidRepo<Key, Value>(
         pagination: Pagination,
         reversed: Boolean
     ): PaginationResult<Value> = count(k).let { count ->
+        if (pagination.firstIndex >= count) {
+            return@let emptyList<Value>().createPaginationResult(
+                pagination,
+                count
+            )
+        }
         val resultPagination = pagination.let { if (reversed) pagination.reverse(count) else pagination }
         helper.blockingReadableTransaction {
             select(
                 tableName,
+                valueColumnArray,
                 selection = "$idColumnName=?",
-                selectionArgs = arrayOf(k.asId()),
+                selectionArgs = arrayOf(k.keyAsString()),
                 limit = resultPagination.limitClause()
             ).use { c ->
                 mutableListOf<Value>().also {
                     if (c.moveToFirst()) {
                         do {
-                            it.add(c.getString(valueColumnName).asValue())
+                            it.add(c.getString(valueColumnName).valueFromString())
                         } while (c.moveToNext())
                     }
                 }
@@ -170,16 +186,23 @@ class OneToManyAndroidRepo<Key, Value>(
         pagination: Pagination,
         reversed: Boolean
     ): PaginationResult<Key> = count().let { count ->
+        if (pagination.firstIndex >= count) {
+            return@let emptyList<Key>().createPaginationResult(
+                pagination,
+                count
+            )
+        }
         val resultPagination = pagination.let { if (reversed) pagination.reverse(count) else pagination }
         helper.blockingReadableTransaction {
-            select(
+            selectDistinct(
                 tableName,
+                idColumnArray,
                 limit = resultPagination.limitClause()
             ).use { c ->
                 mutableListOf<Key>().also {
                     if (c.moveToFirst()) {
                         do {
-                            it.add(c.getString(idColumnName).asKey())
+                            it.add(c.getString(idColumnName).keyFromString())
                         } while (c.moveToNext())
                     }
                 }
@@ -197,16 +220,17 @@ class OneToManyAndroidRepo<Key, Value>(
     ): PaginationResult<Key> = count().let { count ->
         val resultPagination = pagination.let { if (reversed) pagination.reverse(count) else pagination }
         helper.blockingReadableTransaction {
-            select(
+            selectDistinct(
                 tableName,
+                idColumnArray,
                 selection = "$valueColumnName=?",
-                selectionArgs = arrayOf(v.asValue()),
+                selectionArgs = arrayOf(v.valueAsString()),
                 limit = resultPagination.limitClause()
             ).use { c ->
                 mutableListOf<Key>().also {
                     if (c.moveToFirst()) {
                         do {
-                            it.add(c.getString(idColumnName).asKey())
+                            it.add(c.getString(idColumnName).keyFromString())
                         } while (c.moveToNext())
                     }
                 }
@@ -221,7 +245,7 @@ class OneToManyAndroidRepo<Key, Value>(
         helper.blockingWritableTransaction {
             toRemove.flatMap { (k, vs) ->
                 vs.mapNotNullA { v ->
-                    if (delete(tableName, "$idColumnName=? AND $valueColumnName=?", arrayOf(k.asId(), v.asValue())) > 0) {
+                    if (delete(tableName, "$idColumnName=? AND $valueColumnName=?", arrayOf(k.keyAsString(), v.valueAsString())) > 0) {
                         k to v
                     } else {
                         null
@@ -233,3 +257,24 @@ class OneToManyAndroidRepo<Key, Value>(
         }
     }
 }
+
+fun <Key, Value> OneToManyAndroidRepo(
+    tableName: String,
+    keySerializer: KSerializer<Key>,
+    valueSerializer: KSerializer<Value>,
+    helper: SQLiteOpenHelper
+) = OneToManyAndroidRepo(
+    tableName,
+    { internalSerialFormat.encodeToString(keySerializer, this) },
+    { internalSerialFormat.encodeToString(valueSerializer, this) },
+    { internalSerialFormat.decodeFromString(keySerializer, this) },
+    { internalSerialFormat.decodeFromString(valueSerializer, this) },
+    helper
+)
+
+fun <Key, Value> KeyValuesAndroidRepo(
+    tableName: String,
+    keySerializer: KSerializer<Key>,
+    valueSerializer: KSerializer<Value>,
+    helper: SQLiteOpenHelper
+) = OneToManyAndroidRepo(tableName, keySerializer, valueSerializer, helper)

repos/exposed/src/jvmMain/kotlin/dev/inmo/micro_utils/repos/exposed/onetomany/ExposedOneToManyKeyValueRepo.kt

@@ -31,6 +31,9 @@ open class ExposedOneToManyKeyValueRepo<Key, Value>(
         transaction(database) {
             toAdd.keys.flatMap { k ->
                 toAdd[k] ?.mapNotNull { v ->
+                    if (select { keyColumn.eq(k).and(valueColumn.eq(v)) }.limit(1).count() > 0) {
+                        return@mapNotNull null
+                    }
                     insertIgnore {
                         it[keyColumn] = k
                         it[valueColumn] = v

repos/inmemory/src/commonMain/kotlin/dev/inmo/micro_utils/repos/MapOneToManyKeyValueRepo.kt

@@ -86,6 +86,12 @@ class MapWriteOneToManyKeyValueRepo<Key, Value>(
     override suspend fun clear(k: Key) {
         map.remove(k) ?.also { _onDataCleared.emit(k) }
     }
+
+    override suspend fun clearWithValue(v: Value) {
+        map.forEach { (k, values) ->
+            if (values.remove(v)) _onValueRemoved.emit(k to v)
+        }
+    }
 }
 
 class MapOneToManyKeyValueRepo<Key, Value>(

repos/ktor/client/src/commonMain/kotlin/dev/inmo/micro_utils/repos/ktor/client/one_to_many/KtorWriteOneToManyKeyValueRepo.kt

@@ -67,6 +67,15 @@ class KtorWriteOneToManyKeyValueRepo<Key, Value> (
         Unit.serializer(),
     )
 
+    override suspend fun clearWithValue(v: Value) = unifiedRequester.unipost(
+        buildStandardUrl(
+            baseUrl,
+            clearWithValueRoute,
+        ),
+        BodyPair(valueSerializer, v),
+        Unit.serializer(),
+    )
+
     override suspend fun set(toSet: Map<Key, List<Value>>) = unifiedRequester.unipost(
         buildStandardUrl(
             baseUrl,
@@ -75,4 +84,4 @@ class KtorWriteOneToManyKeyValueRepo<Key, Value> (
         BodyPair(keyValueMapSerializer, toSet),
         Unit.serializer(),
     )
-}
+}

repos/ktor/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/ktor/common/one_to_many/OneToManyRoutes.kt

@@ -14,4 +14,5 @@ const val onDataClearedRoute = "onDataCleared"
 const val addRoute = "add"
 const val removeRoute = "remove"
 const val clearRoute = "clear"
-const val setRoute = "set"
+const val clearWithValueRoute = "clearWithValue"
+const val setRoute = "set"

repos/ktor/server/src/jvmMain/kotlin/dev/inmo/micro_utils/repos/ktor/server/one_to_many/ConfigureOneToManyWriteKeyValueRepoRoutes.kt

@@ -72,6 +72,17 @@ fun <Key, Value> Route.configureOneToManyWriteKeyValueRepoRoutes(
         }
     }
 
+    post(clearWithValueRoute) {
+        unifiedRouter.apply {
+            val v = uniload(valueSerializer)
+
+            unianswer(
+                Unit.serializer(),
+                originalRepo.clearWithValue(v),
+            )
+        }
+    }
+
     post(setRoute) {
         unifiedRouter.apply {
             val obj = uniload(keyValueMapSerializer)