移動數據庫引擎Realm?v2.4.3 發布

jopen 7年前發布 | 6K 次閱讀 Realm 數據庫 移動數據庫

 

Realm 是一個跨平臺的移動數據庫引擎，可運行于手機、平板和可穿戴設備之上。于 2014 年 7 月發布，準確來說，它是專門為移動應用所設計的數據持久化解決方案之一。 Realm 可以輕松地移植到您的項目當中，并且絕大部分常用的功能（比如說插入、查詢等等）都可以用一行簡單的代碼輕松完成！ Realm 并不是對 Core Data 的簡單封裝，相反地， Realm 并不是基于 Core Data ，也不是基于 SQLite 所構建的。它擁有自己的數據庫存儲引擎，可以高效且快速地完成數據庫的構建操作。

更新日志

Enhancements

  • Avoid copying copy-on-write data structures, which can grow the file, when the write does not actually change existing values.
  • Improve performance of deleting all objects in an RLMResults.
  • Reduce the number of files opened per thread-specific Realm on macOS.
  • Improve startup performance with large numbers of RLMObject/Object subclasses.

Bug修復

  • Fix synchronized Realms not downloading remote changes when an access token expires and there are no local changes to upload.
  • Fix an issue where values set on a Realm object using setValue(value:, forKey:) that were not themselves Realm objects were not properly converted into Realm objects or checked for validity.
  • Fix an issue where -[RLMSyncUser sessionForURL:] could erronenously return a non-nil value when passed in an invalid URL.
  • SyncSession.Progress.fractionTransferred now returns 1 if there are no transferrable bytes.
  • Fix sync progress notifications registered on background threads by always dispatching on a dedicated background queue.
  • Fix compilation issues with Xcode 8.3 beta 2.
  • Fix incorrect sync progress notification values for Realms originally created using a version of Realm prior to 2.3.0.
  • Fix LLDB integration to be able to display summaries of RLMResults once more.
  • Reject Swift properties with names which cause them to fall in to ARC method families rather than crashing when they are accessed.
  • Fix sorting by key path when the declared property order doesn't match the order of properties in the Realm file, which can happen when properties are added in different schema versions.

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