InsanusMokrassar/MicroUtils
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now Pagination is an ClosedRange

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InsanusMokrassar 2021-11-17 14:07:11 +06:00
parent 2af7e2f681
commit aa45a4ab13
2 changed files with 12 additions and 4 deletions
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3
CHANGELOG.md
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@ -2,6 +2,9 @@
## 0.8.3 ## 0.8.3
* `Pagination`:
* `Pagination` now extends `ClosedRange<Int>`
## 0.8.2 ## 0.8.2
* `Versions`: * `Versions`:

13
pagination/common/src/commonMain/kotlin/dev/inmo/micro_utils/pagination/Pagination.kt
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@ -9,7 +9,7 @@ import kotlin.math.floor
* If you want to request something, you should use [SimplePagination]. If you need to return some result including * If you want to request something, you should use [SimplePagination]. If you need to return some result including
* pagination - [PaginationResult] * pagination - [PaginationResult]
*/ */
interface Pagination { interface Pagination : ClosedRange<Int> {
/** /**
* Started with 0. * Started with 0.
* Number of page inside of pagination. Offset can be calculated as [page] * [size] * Number of page inside of pagination. Offset can be calculated as [page] * [size]
@ -20,6 +20,11 @@ interface Pagination {
* Size of current page. Offset can be calculated as [page] * [size] * Size of current page. Offset can be calculated as [page] * [size]
*/ */
val size: Int val size: Int
override val start: Int
get() = page * size
override val endInclusive: Int
get() = lastIndex
} }
/** /**
@ -32,7 +37,7 @@ inline val Pagination.isFirstPage
* First number in index of objects. It can be used as offset for databases or other data sources * First number in index of objects. It can be used as offset for databases or other data sources
*/ */
val Pagination.firstIndex: Int val Pagination.firstIndex: Int
get() = page * size get() = start
/** /**
* Last number in index of objects. In fact, one [Pagination] object represent data in next range: * Last number in index of objects. In fact, one [Pagination] object represent data in next range:
@ -41,7 +46,7 @@ val Pagination.firstIndex: Int
* you will retrieve [Pagination.firstIndex] == 10 and [Pagination.lastIndex] == 19. Here [Pagination.lastIndexExclusive] == 20 * you will retrieve [Pagination.firstIndex] == 10 and [Pagination.lastIndex] == 19. Here [Pagination.lastIndexExclusive] == 20
*/ */
val Pagination.lastIndexExclusive: Int val Pagination.lastIndexExclusive: Int
get() = firstIndex + size get() = endInclusive + 1
/** /**
* Last number in index of objects. In fact, one [Pagination] object represent data in next range: * Last number in index of objects. In fact, one [Pagination] object represent data in next range:
@ -50,7 +55,7 @@ val Pagination.lastIndexExclusive: Int
* you will retrieve [Pagination.firstIndex] == 10 and [Pagination.lastIndex] == 19. * you will retrieve [Pagination.firstIndex] == 10 and [Pagination.lastIndex] == 19.
*/ */
val Pagination.lastIndex: Int val Pagination.lastIndex: Int
get() = lastIndexExclusive - 1 get() = endInclusive
/** /**
* Calculates pages count for given [datasetSize] * Calculates pages count for given [datasetSize]