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Adopt DatabaseQueue.

This commit is contained in:
Brent Simmons 2019-11-29 21:49:44 -08:00
parent 6fdaf773cd
commit 9dc3ed03c7
6 changed files with 89 additions and 60 deletions
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29
Frameworks/ArticlesDatabase/ArticlesDatabase.swift
View File

@ -22,21 +22,29 @@ public typealias UpdateArticlesCompletionBlock = (Set<Article>?, Set<Article>?)
public final class ArticlesDatabase {
/// When ArticlesDatabase is suspended, database calls will crash the app.
public var isSuspended: Bool {
return queue.isSuspended
}
private let articlesTable: ArticlesTable
private let queue: DatabaseQueue
public init(databaseFilePath: String, accountID: String) {
let queue = RSDatabaseQueue(filepath: databaseFilePath, excludeFromBackup: false)
let queue = DatabaseQueue(databasePath: databaseFilePath)
self.queue = queue
self.articlesTable = ArticlesTable(name: DatabaseTableName.articles, accountID: accountID, queue: queue)
queue.createTables(usingStatements: ArticlesDatabase.tableCreationStatements)
queue.update { (database) in
queue.runCreateStatements(ArticlesDatabase.tableCreationStatements)
queue.runInDatabase { database in
if !self.articlesTable.containsColumn("searchRowID", in: database) {
database.executeStatements("ALTER TABLE articles add column searchRowID INTEGER;")
}
database.executeStatements("CREATE INDEX if not EXISTS articles_searchRowID on articles(searchRowID);")
database.executeStatements("DROP TABLE if EXISTS tags;DROP INDEX if EXISTS tags_tagName_index;DROP INDEX if EXISTS articles_feedID_index;DROP INDEX if EXISTS statuses_read_index;")
}
queue.vacuumIfNeeded()
queue.vacuumIfNeeded(daysBetweenVacuums: 9)
DispatchQueue.main.async {
self.articlesTable.indexUnindexedArticles()
}
@ -145,6 +153,19 @@ public final class ArticlesDatabase {
return articlesTable.mark(articles, statusKey, flag)
}
// MARK: - Suspend and Resume (for iOS)
/// Close the database and stop running database calls.
/// Any pending calls will complete first.
public func suspend() {
queue.suspend()
}
/// Open the database and allow for running database calls again.
public func resume() {
queue.resume()
}
// MARK: - Caches
/// Call to free up some memory. Should be done when the app is backgrounded, for instance.

30
Frameworks/ArticlesDatabase/ArticlesTable.swift
View File

@ -16,7 +16,7 @@ final class ArticlesTable: DatabaseTable {
let name: String
private let accountID: String
private let queue: RSDatabaseQueue
private let queue: DatabaseQueue
private let statusesTable: StatusesTable
private let authorsLookupTable: DatabaseLookupTable
private let attachmentsLookupTable: DatabaseLookupTable
@ -32,7 +32,7 @@ final class ArticlesTable: DatabaseTable {
private typealias ArticlesFetchMethod = (FMDatabase) -> Set<Article>
init(name: String, accountID: String, queue: RSDatabaseQueue) {
init(name: String, accountID: String, queue: DatabaseQueue) {
self.name = name
self.accountID = accountID
@ -149,7 +149,7 @@ final class ArticlesTable: DatabaseTable {
func fetchArticlesMatching(_ searchString: String, _ feedIDs: Set<String>) -> Set<Article> {
var articles: Set<Article> = Set<Article>()
queue.fetchSync { (database) in
queue.runInDatabaseSync { (database) in
articles = self.fetchArticlesMatching(searchString, database)
}
articles = articles.filter{ feedIDs.contains($0.feedID) }
@ -229,7 +229,7 @@ final class ArticlesTable: DatabaseTable {
articleIDs.formUnion(parsedItems.articleIDs())
}
self.queue.update { (database) in
self.queue.runInTransaction { (database) in
let statusesDictionary = self.statusesTable.ensureStatusesForArticleIDs(articleIDs, read, database) //1
assert(statusesDictionary.count == articleIDs.count)
@ -273,7 +273,7 @@ final class ArticlesTable: DatabaseTable {
}
func ensureStatuses(_ articleIDs: Set<String>, _ defaultRead: Bool, _ statusKey: ArticleStatus.Key, _ flag: Bool) {
self.queue.update { (database) in
self.queue.runInTransaction { (database) in
let statusesDictionary = self.statusesTable.ensureStatusesForArticleIDs(articleIDs, defaultRead, database)
let statuses = Set(statusesDictionary.values)
self.statusesTable.mark(statuses, statusKey, flag, database)
@ -290,7 +290,7 @@ final class ArticlesTable: DatabaseTable {
var unreadCountDictionary = UnreadCountDictionary()
queue.fetch { (database) in
queue.runInDatabase { (database) in
for feedID in feedIDs {
unreadCountDictionary[feedID] = self.fetchUnreadCount(feedID, database)
}
@ -309,7 +309,7 @@ final class ArticlesTable: DatabaseTable {
return
}
queue.fetch { (database) in
queue.runInDatabase { (database) in
let placeholders = NSString.rs_SQLValueList(withPlaceholders: UInt(feedIDs.count))!
let sql = "select count(*) from articles natural join statuses where feedID in \(placeholders) and (datePublished > ? or (datePublished is null and dateArrived > ?)) and read=0 and userDeleted=0;"
@ -331,7 +331,7 @@ final class ArticlesTable: DatabaseTable {
let cutoffDate = articleCutoffDate
queue.fetch { (database) in
queue.runInDatabase { (database) in
let sql = "select distinct feedID, count(*) from articles natural join statuses where read=0 and userDeleted=0 and (starred=1 or dateArrived>?) group by feedID;"
guard let resultSet = database.executeQuery(sql, withArgumentsIn: [cutoffDate]) else {
@ -361,7 +361,7 @@ final class ArticlesTable: DatabaseTable {
return
}
queue.fetch { (database) in
queue.runInDatabase { (database) in
let placeholders = NSString.rs_SQLValueList(withPlaceholders: UInt(feedIDs.count))!
let sql = "select count(*) from articles natural join statuses where feedID in \(placeholders) and read=0 and starred=1 and userDeleted=0;"
let parameters = Array(feedIDs) as [Any]
@ -390,7 +390,7 @@ final class ArticlesTable: DatabaseTable {
func mark(_ articles: Set<Article>, _ statusKey: ArticleStatus.Key, _ flag: Bool) -> Set<ArticleStatus>? {
var statuses: Set<ArticleStatus>?
self.queue.updateSync { (database) in
self.queue.runInTransactionSync { (database) in
statuses = self.statusesTable.mark(articles.statuses(), statusKey, flag, database)
}
return statuses
@ -399,7 +399,7 @@ final class ArticlesTable: DatabaseTable {
// MARK: - Indexing
func indexUnindexedArticles() {
queue.fetch { (database) in
queue.runInDatabase { (database) in
let sql = "select articleID from articles where searchRowID is null limit 500;"
guard let resultSet = database.executeQuery(sql, withArgumentsIn: nil) else {
return
@ -419,7 +419,7 @@ final class ArticlesTable: DatabaseTable {
// MARK: - Caches
func emptyCaches() {
queue.run { _ in
queue.runInDatabase { _ in
self.databaseArticlesCache = [String: DatabaseArticle]()
}
}
@ -433,7 +433,7 @@ final class ArticlesTable: DatabaseTable {
if feedIDs.isEmpty {
return
}
queue.run { (database) in
queue.runInDatabase { (database) in
let placeholders = NSString.rs_SQLValueList(withPlaceholders: UInt(feedIDs.count))!
let sql = "select articleID from articles where feedID not in \(placeholders);"
let parameters = Array(feedIDs) as [Any]
@ -458,14 +458,14 @@ private extension ArticlesTable {
private func fetchArticles(_ fetchMethod: @escaping ArticlesFetchMethod) -> Set<Article> {
var articles = Set<Article>()
queue.fetchSync { (database) in
queue.runInDatabaseSync { (database) in
articles = fetchMethod(database)
}
return articles
}
private func fetchArticlesAsync(_ fetchMethod: @escaping ArticlesFetchMethod, _ callback: @escaping ArticleSetBlock) {
queue.fetch { (database) in
queue.runInDatabase { (database) in
let articles = fetchMethod(database)
DispatchQueue.main.async {
callback(articles)

6
Frameworks/ArticlesDatabase/SearchTable.swift
View File

@ -61,10 +61,10 @@ final class ArticleSearchInfo: Hashable {
final class SearchTable: DatabaseTable {
let name = "search"
private let queue: RSDatabaseQueue
private let queue: DatabaseQueue
private weak var articlesTable: ArticlesTable?
init(queue: RSDatabaseQueue, articlesTable: ArticlesTable) {
init(queue: DatabaseQueue, articlesTable: ArticlesTable) {
self.queue = queue
self.articlesTable = articlesTable
}
@ -73,7 +73,7 @@ final class SearchTable: DatabaseTable {
if articleIDs.isEmpty {
return
}
queue.update { (database) in
queue.runInTransaction { (database) in
self.ensureIndexedArticles(articleIDs, database)
}
}

6
Frameworks/ArticlesDatabase/StatusesTable.swift
View File

@ -19,9 +19,9 @@ final class StatusesTable: DatabaseTable {
let name = DatabaseTableName.statuses
private let cache = StatusCache()
private let queue: RSDatabaseQueue
private let queue: DatabaseQueue
init(queue: RSDatabaseQueue) {
init(queue: DatabaseQueue) {
self.queue = queue
}
@ -88,7 +88,7 @@ final class StatusesTable: DatabaseTable {
func fetchArticleIDs(_ sql: String) -> Set<String> {
var articleIDs = Set<String>()
queue.fetchSync { (database) in
queue.runInDatabaseSync { (database) in
guard let resultSet = database.executeQuery(sql, withArgumentsIn: nil) else {
return
}

45
Frameworks/SyncDatabase/SyncDatabase.swift
View File

@ -9,20 +9,27 @@
import Foundation
import RSDatabase
public final class SyncDatabase {
private let syncStatusTable: SyncStatusTable
public init(databaseFilePath: String) {
let queue = RSDatabaseQueue(filepath: databaseFilePath, excludeFromBackup: false)
self.syncStatusTable = SyncStatusTable(queue: queue)
queue.createTables(usingStatements: SyncDatabase.tableCreationStatements)
queue.vacuumIfNeeded()
public struct SyncDatabase {
/// When SyncDatabase is suspended, database calls will crash the app.
public var isSuspended: Bool {
return queue.isSuspended
}
private let syncStatusTable: SyncStatusTable
private let queue: DatabaseQueue
public init(databaseFilePath: String) {
let queue = DatabaseQueue(databasePath: databaseFilePath)
queue.runCreateStatements(SyncDatabase.tableCreationStatements)
queue.vacuumIfNeeded(daysBetweenVacuums: 11)
self.queue = queue
self.syncStatusTable = SyncStatusTable(queue: queue)
}
// MARK: - API
public func insertStatuses(_ statuses: [SyncStatus]) {
syncStatusTable.insertStatuses(statuses)
}
@ -42,7 +49,19 @@ public final class SyncDatabase {
public func deleteSelectedForProcessing(_ articleIDs: [String]) {
syncStatusTable.deleteSelectedForProcessing(articleIDs)
}
// MARK: - Suspend and Resume (for iOS)
/// Close the database and stop running database calls.
/// Any pending calls will complete first.
public func suspend() {
queue.suspend()
}
/// Open the database and allow for running database calls again.
public func resume() {
queue.resume()
}
}
// MARK: - Private

33
Frameworks/SyncDatabase/SyncStatusTable.swift
View File

@ -10,21 +10,19 @@ import Foundation
import Articles
import RSDatabase
final class SyncStatusTable: DatabaseTable {
struct SyncStatusTable: DatabaseTable {
let name = DatabaseTableName.syncStatus
private let queue: RSDatabaseQueue
init(queue: RSDatabaseQueue) {
private let queue: DatabaseQueue
init(queue: DatabaseQueue) {
self.queue = queue
}
func selectForProcessing() -> [SyncStatus] {
var statuses: Set<SyncStatus>? = nil
self.queue.updateSync { database in
queue.runInDatabaseSync { database in
let updateSQL = "update syncStatus set selected = true"
database.executeUpdate(updateSQL, withArgumentsIn: nil)
@ -32,32 +30,26 @@ final class SyncStatusTable: DatabaseTable {
if let resultSet = database.executeQuery(selectSQL, withArgumentsIn: nil) {
statuses = resultSet.mapToSet(self.statusWithRow)
}
}
return statuses != nil ? Array(statuses!) : [SyncStatus]()
}
func selectPendingCount() -> Int {
var count: Int = 0
self.queue.fetchSync { (database) in
queue.runInDatabaseSync { database in
let sql = "select count(*) from syncStatus"
if let resultSet = database.executeQuery(sql, withArgumentsIn: nil) {
resultSet.next()
count = Int(resultSet.int(forColumnIndex: 0))
count = numberWithCountResultSet(resultSet)
}
}
return count
}
func resetSelectedForProcessing(_ articleIDs: [String]) {
self.queue.update { database in
queue.runInTransaction { database in
let parameters = articleIDs.map { $0 as AnyObject }
let placeholders = NSString.rs_SQLValueList(withPlaceholders: UInt(articleIDs.count))!
let updateSQL = "update syncStatus set selected = false where articleID in \(placeholders)"
@ -66,7 +58,7 @@ final class SyncStatusTable: DatabaseTable {
}
func deleteSelectedForProcessing(_ articleIDs: [String]) {
self.queue.update { database in
queue.runInTransaction { database in
let parameters = articleIDs.map { $0 as AnyObject }
let placeholders = NSString.rs_SQLValueList(withPlaceholders: UInt(articleIDs.count))!
let deleteSQL = "delete from syncStatus where articleID in \(placeholders)"
@ -75,18 +67,16 @@ final class SyncStatusTable: DatabaseTable {
}
func insertStatuses(_ statuses: [SyncStatus]) {
self.queue.update { database in
queue.runInTransaction { database in
let statusArray = statuses.map { $0.databaseDictionary() }
self.insertRows(statusArray, insertType: .orReplace, in: database)
}
}
}
private extension SyncStatusTable {
func statusWithRow(_ row: FMResultSet) -> SyncStatus? {
guard let articleID = row.string(forColumn: DatabaseKey.articleID),
let rawKey = row.string(forColumn: DatabaseKey.key),
let key = ArticleStatus.Key(rawValue: rawKey) else {
@ -97,6 +87,5 @@ private extension SyncStatusTable {
let selected = row.bool(forColumn: DatabaseKey.selected)
return SyncStatus(articleID: articleID, key: key, flag: flag, selected: selected)
}
}