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new mechanism of transactions

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InsanusMokrassar 2020-11-22 21:51:33 +06:00
parent 6bbe3a271f
commit 3de5558ed4
3 changed files with 16 additions and 7 deletions
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2
CHANGELOG.md
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@ -10,6 +10,8 @@
to get access to some end-store
* Add default realization of `StandardVersionsRepoProxy` based on `KeyValue` repos
* Add realizations of `StandardVersionsRepoProxy` for exposed and android (`SQL` and `SharedPreferences`)
* `Commons`:
* In Android
## 0.4.3

13
repos/common/src/main/kotlin/dev/inmo/micro_utils/repos/DatabaseTransactions.kt
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@ -2,15 +2,22 @@ package dev.inmo.micro_utils.repos
import android.database.sqlite.SQLiteDatabase
import dev.inmo.micro_utils.coroutines.safely
import kotlinx.coroutines.newSingleThreadContext
import kotlinx.coroutines.withContext
import kotlin.coroutines.CoroutineContext
import kotlin.coroutines.coroutineContext
object InTransaction: CoroutineContext.Element, CoroutineContext.Key<InTransaction> {
override val key: CoroutineContext.Key<InTransaction> = InTransaction
}
suspend fun <T> SQLiteDatabase.transaction(block: suspend SQLiteDatabase.() -> T): T {
return withContext(DatabaseCoroutineContext) {
when {
inTransaction() -> {
return when {
coroutineContext[InTransaction] == InTransaction -> {
block()
}
else -> {
withContext(InTransaction) {
beginTransaction()
safely(
{