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