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Remove duplicated mangas from gql "mangas" query (#924)

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This commit is contained in:
schroda
2024-04-07 04:53:56 +02:00
committed by GitHub
parent cdc21b067c
commit e8e83ed49c
2 changed files with 38 additions and 1 deletions
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8
server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/MangaQuery.kt
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@@ -28,6 +28,7 @@ import suwayomi.tachidesk.graphql.queries.filter.andFilterWithCompare
import suwayomi.tachidesk.graphql.queries.filter.andFilterWithCompareEntity
import suwayomi.tachidesk.graphql.queries.filter.andFilterWithCompareString
import suwayomi.tachidesk.graphql.queries.filter.applyOps
import suwayomi.tachidesk.graphql.queries.util.distinctOn
import suwayomi.tachidesk.graphql.server.primitives.Cursor
import suwayomi.tachidesk.graphql.server.primitives.OrderBy
import suwayomi.tachidesk.graphql.server.primitives.PageInfo
@@ -217,7 +218,12 @@ class MangaQuery {
): MangaNodeList {
val queryResults =
transaction {
val res = MangaTable.leftJoin(CategoryMangaTable).selectAll()
val res =
MangaTable.leftJoin(CategoryMangaTable).slice(
distinctOn(MangaTable.id),
*(MangaTable.columns).toTypedArray(),
*(CategoryMangaTable.columns).toTypedArray(),
).selectAll()
res.applyOps(condition, filter)

31
server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/util/CustomDistinctOn.kt Normal file
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@@ -0,0 +1,31 @@
package suwayomi.tachidesk.graphql.queries.util
import org.jetbrains.exposed.sql.BooleanColumnType
import org.jetbrains.exposed.sql.CustomFunction
import org.jetbrains.exposed.sql.Expression
import org.jetbrains.exposed.sql.QueryBuilder
/**
* src: https://github.com/JetBrains/Exposed/issues/500#issuecomment-543574151 (2024-04-02 02:20)
*/
fun distinctOn(vararg expressions: Expression<*>): CustomFunction<Boolean?> =
customBooleanFunction(
functionName = "DISTINCT ON",
postfix = " TRUE",
params = expressions,
)
fun customBooleanFunction(
functionName: String,
postfix: String = "",
vararg params: Expression<*>,
): CustomFunction<Boolean?> =
object : CustomFunction<Boolean?>(functionName, BooleanColumnType(), *params) {
override fun toQueryBuilder(queryBuilder: QueryBuilder) {
super.toQueryBuilder(queryBuilder)
if (postfix.isNotEmpty()) {
queryBuilder.append(postfix)
}
}
}