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AbstractExposedReadKeyValueRepo.kt
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AbstractExposedReadKeyValueRepo.kt
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package dev.inmo.micro_utils.repos.exposed.keyvalue
import dev.inmo.micro_utils.pagination.*
import dev.inmo.micro_utils.repos.ReadKeyValueRepo
import dev.inmo.micro_utils.repos.exposed.*
import dev.inmo.micro_utils.repos.exposed.utils.selectPaginated
import org.jetbrains.exposed.sql.*
import org.jetbrains.exposed.sql.transactions.transaction
abstract class AbstractExposedReadKeyValueRepo<Key, Value>(
override val database: Database,
tableName: String? = null
) : ReadKeyValueRepo<Key, Value>,
CommonExposedRepo<Key, Value>,
Table(tableName ?: "") {
abstract val keyColumn: Column<*>
/**
* Same as [asId] in context of KeyValue repo
*/
abstract val ResultRow.asKey: Key
override val ResultRow.asId: Key
get() = asKey
abstract val selectByValue: ISqlExpressionBuilder.(Value) -> Op<Boolean>
override suspend fun get(k: Key): Value? = transaction(database) {
selectAll().where { selectById(k) }.limit(1).firstOrNull() ?.asObject
}
override suspend fun contains(key: Key): Boolean = transaction(database) {
selectAll().where { selectById(key) }.limit(1).any()
}
override suspend fun getAll(): Map<Key, Value> = transaction(database) { selectAll().associate { it.asKey to it.asObject } }
override suspend fun count(): Long = transaction(database) { selectAll().count() }
override suspend fun keys(pagination: Pagination, reversed: Boolean): PaginationResult<Key> = transaction(database) {
selectAll().selectPaginated(
pagination,
keyColumn,
reversed
) {
it.asKey
}
}
override suspend fun keys(v: Value, pagination: Pagination, reversed: Boolean): PaginationResult<Key> = transaction(database) {
selectAll().where { selectByValue(v) }.selectPaginated(
pagination,
keyColumn,
reversed
) {
it.asKey
}
}
override suspend fun values(pagination: Pagination, reversed: Boolean): PaginationResult<Value> = transaction(database) {
selectAll().selectPaginated(
pagination,
keyColumn,
reversed
) {
it.asObject
}
}
}