Add DB support

[Bet1K]

Please add some sort of DB support. My books have disappeared again (haven't used reload command)

[issue-label-bot]

Issue-Label Bot is automatically applying the label feature_request to this issue, with a confidence of 0.95. Please mark this comment with 👍 or 👎 to give our bot feedback!

Links: app homepage, dashboard and code for this bot.

[Th3Shadowbroker]

Hi @Bet1K,
thanks for the feature-request 🙂
In this particular case, this issue is a feature request, as well as a bug report.

Regarding the bug-report:
As far as I know, Bookshelves uses the block's meta-data to store the shelf-inventory. When the server starts, this information is loaded through a scheduled task, which injects the inventory-data into the blocks (were it's kept only during runtime). When reloaded, the meta-data is kept and the plugin restores it's knowledge using the already loaded meta-data from the blocks. The data only gets saved (written to the file), when the plugin is disabled correctly (No crashes and no forced restarts). (Correct me if I'm wrong @InventivetalentDev). Could you please create a separate issue with more details on that using this issue-template for bug-reports so we can try to replicate it and have a closer look at the problem? 🙂

Regarding the feature request:
Actually a database sound like a great idea, however, as I explained before, the data gets loaded once and is then injected into the assigned blocks meta-data. So it don't really get the advantage of using a database instead of a flatfile. The only exception, beeing a scenario, where you have the same world on multiple servers and want to synchronize it. Do you have this scenario?