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improvements in ReadKeyValueFromCRUDRepo

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This commit is contained in:
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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3
CHANGELOG.md
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@ -5,6 +5,9 @@
* `Repos`:
* `Cache`:
* New transformer type: `ReadCRUDFromKeyValueRepo`
* New transformer type: `ReadKeyValueFromCRUDRepo`
* `Pagination`:
* New `paginate` extensions with `reversed` support for `List`/`Set`
## 0.16.9

2
gradle/wrapper/gradle-wrapper.properties vendored
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@ -1,5 +1,5 @@
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-bin.zip
distributionUrl=https\://services.gradle.org/distributions/gradle-7.6-bin.zip
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists

29
pagination/common/src/commonMain/kotlin/dev/inmo/micro_utils/pagination/utils/OptionallyReverse.kt Normal file
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@ -0,0 +1,29 @@
package dev.inmo.micro_utils.pagination.utils
fun <T> Iterable<T>.optionallyReverse(reverse: Boolean): Iterable<T> = when (this) {
is List<T> -> optionallyReverse(reverse)
is Set<T> -> optionallyReverse(reverse)
else -> if (reverse) {
reversed()
} else {
this
}
}
fun <T> List<T>.optionallyReverse(reverse: Boolean): List<T> = if (reverse) {
reversed()
} else {
this
}
fun <T> Set<T>.optionallyReverse(reverse: Boolean): Set<T> = if (reverse) {
reversed().toSet()
} else {
this
}
inline fun <reified T> Array<T>.optionallyReverse(reverse: Boolean) = if (reverse) {
Array(size) {
get(lastIndex - it)
}
} else {
this
}

56
pagination/common/src/commonMain/kotlin/dev/inmo/micro_utils/pagination/utils/IterableExtensions.kt → pagination/common/src/commonMain/kotlin/dev/inmo/micro_utils/pagination/utils/Paginate.kt
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@ -32,6 +32,24 @@ fun <T> List<T>.paginate(with: Pagination): PaginationResult<T> {
)
}
fun <T> List<T>.paginate(with: Pagination, reversed: Boolean): PaginationResult<T> {
val actualPagination = with.optionallyReverse(
size,
reversed
)
val firstIndex = maxOf(actualPagination.firstIndex, 0)
val lastIndex = minOf(actualPagination.lastIndexExclusive, size)
if (firstIndex > lastIndex) {
return emptyPaginationResult()
}
return subList(firstIndex, lastIndex).optionallyReverse(reversed).createPaginationResult(
with,
size.toLong()
)
}
fun <T> Set<T>.paginate(with: Pagination): PaginationResult<T> {
return this.drop(with.firstIndex).take(with.size).createPaginationResult(
with,
@ -39,30 +57,20 @@ fun <T> Set<T>.paginate(with: Pagination): PaginationResult<T> {
)
}
fun <T> Iterable<T>.optionallyReverse(reverse: Boolean): Iterable<T> = when (this) {
is List<T> -> optionallyReverse(reverse)
is Set<T> -> optionallyReverse(reverse)
else -> if (reverse) {
reversed()
} else {
this
}
}
fun <T> List<T>.optionallyReverse(reverse: Boolean): List<T> = if (reverse) {
reversed()
} else {
this
}
fun <T> Set<T>.optionallyReverse(reverse: Boolean): Set<T> = if (reverse) {
reversed().toSet()
} else {
this
}
fun <T> Set<T>.paginate(with: Pagination, reversed: Boolean): PaginationResult<T> {
val actualPagination = with.optionallyReverse(
size,
reversed
)
inline fun <reified T> Array<T>.optionallyReverse(reverse: Boolean) = if (reverse) {
Array(size) {
get(lastIndex - it)
val firstIndex = maxOf(actualPagination.firstIndex, 0)
val lastIndex = minOf(actualPagination.lastIndexExclusive, size)
if (firstIndex > lastIndex) {
return emptyPaginationResult()
}
} else {
this
return this.drop(firstIndex).take(lastIndex - firstIndex).optionallyReverse(reversed).createPaginationResult(
with,
size.toLong()
)
}

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)
}