问题描述
我正在尝试创建一个新的 private const val GITHUB_STARTING_PAGE_INDEX = 1
@OptIn(ExperimentalPagingApi::class)
class GithubRemoteMediator(
private val query: String,private val service: GithubService,private val repoDatabase: RepoDatabase
) : RemoteMediator<Int,Repo>() {
override suspend fun load(loadType: LoadType,state: PagingState<Int,Repo>): MediatorResult {
val page = when (loadType) {
LoadType.REFRESH -> GITHUB_STARTING_PAGE_INDEX
LoadType.PREPEND -> return MediatorResult.Success(true)
LoadType.APPEND -> {
// this can run with an outdated PagingState from the prevIoUs RemoteMediator instance,causing the Exception to be thrown
val remoteKeys = getRemoteKeyForLastItem(state)
if (remoteKeys == null || remoteKeys.nextKey == null) {
throw InvalidobjectException("Remote key should not be null for $loadType")
}
remoteKeys.nextKey
}
}
val apiQuery = query + IN_QUALIFIER
try {
val apiResponse = service.searchRepos(apiQuery,page,state.config.pageSize)
val repos = apiResponse.items
val endOfPaginationReached = repos.isEmpty()
repoDatabase.withTransaction {
if (loadType == LoadType.REFRESH) {
repoDatabase.remoteKeysDao().clearRemoteKeys()
repoDatabase.reposDao().clearRepos()
}
val prevKey = if (page == GITHUB_STARTING_PAGE_INDEX) null else page - 1
val nextKey = if (endOfPaginationReached) null else page + 1
val keys = repos.map {
RemoteKeys(repoId = it.id,prevKey = prevKey,nextKey = nextKey)
}
repoDatabase.remoteKeysDao().insertAll(keys)
repoDatabase.reposDao().insertAll(repos)
}
return MediatorResult.Success(endOfPaginationReached = endOfPaginationReached)
} catch (exception: IOException) {
return MediatorResult.Error(exception)
} catch (exception: HttpException) {
return MediatorResult.Error(exception)
}
}
private suspend fun getRemoteKeyForLastItem(state: PagingState<Int,Repo>): RemoteKeys? {
return state.pages.lastOrNull() { it.data.isNotEmpty() }?.data?.lastOrNull()
?.let { repo ->
repoDatabase.remoteKeysDao().remoteKeysRepoId(repo.id)
}
}
}
项目并不断在终端中收到以下消息：
Gridsome
我采取的步骤
zsh: command not found: gridsomenpm install --global @gridsome/clicd testProjects
解决方法
暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！
如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。
小编邮箱:dio#foxmail.com (将#修改为@）