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improvements in ReadKeyValueFromCRUDRepo

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InsanusMokrassar
2023-02-17 13:45:22 +06:00
parent c1476bd075
commit f4af28059b
7 changed files with 129 additions and 30 deletions
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20
repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/KeyValueRepo.kt
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@@ -2,6 +2,8 @@ package dev.inmo.micro_utils.repos
import dev.inmo.micro_utils.pagination.*
import dev.inmo.micro_utils.pagination.utils.doAllWithCurrentPaging
import dev.inmo.micro_utils.pagination.utils.getAllWithNextPaging
import dev.inmo.micro_utils.pagination.utils.paginate
import kotlinx.coroutines.flow.Flow
/**
@@ -17,24 +19,32 @@ interface ReadKeyValueRepo<Key, Value> : Repo {
suspend fun get(k: Key): Value?
/**
* This method should use sorted by [Key]s search and take the [PaginationResult]. By default, it should use
* This method should use sorted by [Key]s search and return the [PaginationResult]. By default, it should use
* ascending sort for [Key]s
*/
suspend fun values(pagination: Pagination, reversed: Boolean = false): PaginationResult<Value>
/**
* This method should use sorted by [Key]s search and take the [PaginationResult]. By default, it should use
* This method should use sorted by [Key]s search and return the [PaginationResult]. By default, it should use
* ascending sort for [Key]s
*/
suspend fun keys(pagination: Pagination, reversed: Boolean = false): PaginationResult<Key>
/**
* This method should use sorted by [Key]s search and take the [PaginationResult]. By default, it should use
* ascending sort for [Key]s
* This method should use sorted by [Key]s search and return the [PaginationResult]. By default, it should use
* ascending sort for [Key]s.
*
* **DEFAULT REALIZATION IS NOT OPTIMAL AND HAS BEEN ADDED TO COVER CASES OF DIFFERENT COMMON MAPPINGS AND TRANSFORMATIONS**
*
* @param v This value should be used to exclude from search the items with different [Value]s
*/
suspend fun keys(v: Value, pagination: Pagination, reversed: Boolean = false): PaginationResult<Key>
suspend fun keys(v: Value, pagination: Pagination, reversed: Boolean = false): PaginationResult<Key> {
return getAllWithNextPaging {
keys(it)
}.filter {
get(it) == v
}.paginate(pagination, reversed)
}
/**
* @return true if [key] is presented in current collection or false otherwise

3
repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/transforms/kv/Factories.kt
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@@ -2,6 +2,7 @@ package dev.inmo.micro_utils.repos.transforms.kv
import dev.inmo.micro_utils.repos.KeyValueRepo
import dev.inmo.micro_utils.repos.KeyValuesRepo
import dev.inmo.micro_utils.repos.ReadCRUDRepo
import dev.inmo.micro_utils.repos.ReadKeyValueRepo
import dev.inmo.micro_utils.repos.ReadKeyValuesRepo
import kotlin.js.JsName
@@ -10,3 +11,5 @@ import kotlin.jvm.JvmName
fun <K, V> ReadKeyValuesRepo<K, V>.asReadKeyValueRepo() = ReadKeyValueFromKeyValuesRepo(this)
fun <K, V> KeyValuesRepo<K, V>.asKeyValueRepo() = KeyValueFromKeyValuesRepo(this)
fun <K, V> ReadCRUDRepo<K, V>.asReadKeyValueRepo() = ReadKeyValueFromCRUDRepo(this)

46
repos/common/src/commonMain/kotlin/dev/inmo/micro_utils/repos/transforms/kv/ReadKeyValueFromCRUDRepo.kt Normal file
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@@ -0,0 +1,46 @@
package dev.inmo.micro_utils.repos.transforms.kv
import dev.inmo.micro_utils.pagination.FirstPagePagination
import dev.inmo.micro_utils.pagination.Pagination
import dev.inmo.micro_utils.pagination.PaginationResult
import dev.inmo.micro_utils.pagination.changeResults
import dev.inmo.micro_utils.pagination.changeResultsUnchecked
import dev.inmo.micro_utils.pagination.utils.doForAllWithNextPaging
import dev.inmo.micro_utils.pagination.utils.optionallyReverse
import dev.inmo.micro_utils.pagination.utils.paginate
import dev.inmo.micro_utils.repos.ReadCRUDRepo
import dev.inmo.micro_utils.repos.ReadKeyValueRepo
import dev.inmo.micro_utils.repos.ReadKeyValuesRepo
import dev.inmo.micro_utils.repos.transforms.kvs.ReadKeyValuesFromKeyValueRepo
import kotlin.jvm.JvmInline
@JvmInline
value class ReadKeyValueFromCRUDRepo<Key, Value>(
private val original: ReadCRUDRepo<Value, Key>
) : ReadKeyValueRepo<Key, Value> {
override suspend fun get(k: Key): Value? = original.getById(k)
override suspend fun values(pagination: Pagination, reversed: Boolean): PaginationResult<Value> = original.getByPagination(
pagination.optionallyReverse(count(), reversed)
).let {
if (reversed) {
it.changeResultsUnchecked(it.results.reversed())
} else {
it
}
}
override suspend fun keys(pagination: Pagination, reversed: Boolean): PaginationResult<Key> = original.getIdsByPagination(
pagination.optionallyReverse(count(), reversed)
).let {
if (reversed) {
it.changeResultsUnchecked(it.results.reversed())
} else {
it
}
}
override suspend fun count(): Long = original.count()
override suspend fun contains(key: Key): Boolean = original.contains(key)
}