new ReadOneToManyKeyValueRepo#keys

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

@@ -6,6 +6,7 @@ import kotlinx.coroutines.flow.Flow
 interface ReadOneToManyKeyValueRepo<Key, Value> : Repo {
     suspend fun get(k: Key, pagination: Pagination, reversed: Boolean = false): PaginationResult<Value>
     suspend fun keys(pagination: Pagination, reversed: Boolean = false): PaginationResult<Key>
+    suspend fun keys(v: Value, pagination: Pagination, reversed: Boolean = false): PaginationResult<Key>
     suspend fun contains(k: Key): Boolean
     suspend fun contains(k: Key, v: Value): Boolean
     suspend fun count(k: Key): Long

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

@@ -42,6 +42,23 @@ open class MapperReadOneToManyKeyValueRepo<FromKey, FromValue, ToKey, ToValue>(
         )
     }
 
+    override suspend fun keys(
+        v: FromValue,
+        pagination: Pagination,
+        reversed: Boolean
+    ): PaginationResult<FromKey> = to.keys(
+        v.toOutValue(),
+        pagination,
+        reversed
+    ).let {
+        PaginationResult(
+            it.page,
+            it.pagesNumber,
+            it.results.map { it.toInnerKey() },
+            it.size
+        )
+    }
+
     override suspend fun contains(k: FromKey): Boolean = to.contains(k.toOutKey())
     override suspend fun contains(k: FromKey, v: FromValue): Boolean = to.contains(k.toOutKey(), v.toOutValue())
 

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

@@ -169,6 +169,33 @@ class OneToManyAndroidRepo<Key, Value>(
         )
     }
 
+    override suspend fun keys(
+        v: Value,
+        pagination: Pagination,
+        reversed: Boolean
+    ): PaginationResult<Key> = count().let { count ->
+        val resultPagination = pagination.let { if (reversed) pagination.reverse(count) else pagination }
+        helper.readableTransaction {
+            select(
+                tableName,
+                selection = "$valueColumnName=?",
+                selectionArgs = arrayOf(v.asValue()),
+                limit = resultPagination.limitClause()
+            ).use { c ->
+                mutableListOf<Key>().also {
+                    if (c.moveToFirst()) {
+                        do {
+                            it.add(c.getString(idColumnName).asKey())
+                        } while (c.moveToNext())
+                    }
+                }
+            }
+        }.createPaginationResult(
+            pagination,
+            count
+        )
+    }
+
     override suspend fun remove(toRemove: Map<Key, List<Value>>) {
         helper.writableTransaction {
             toRemove.flatMap { (k, vs) ->