How to change Genre of a book in the Library?

vmsda · 02-09-2015, 09:01 AM

Is it possible to do it without deleting and reloading it? Thanks.

rkomar · 02-10-2015, 04:24 AM

It might be possible. The information would be stored in a database file on the device. It looks to me like it could be in /system/explorer-2/explorer-2.db, which is an SQLITE database file. If you know a thing or two about databases, and especially SQLITE, then you could probably change the genre value for a particular book in the database. I don't know how long it would last before the book was probed and the database updated again with the original genre value.

vmsda · 02-10-2015, 05:18 AM

Thank you.

rkomar · 02-10-2015, 05:44 PM

Just out of curiosity, I looked at explorer-2.db in more detail using the sqlite3 commandline program on my linux box. The books_impl table contains a book number for each title. The booktogenre table contains a genre value for each book number. The genres tables contains a genre title for each value. So, it does look like that is the place to change the genre of a book without changing the book. You would just have to change the right line in the booktogenre table.

If you were originally wondering if there was some way to do it in the Library UI, I haven't seen it. The metadata in the books seems to be unchangeable via the UI.

02-09-2015, 09:01 AM	#1
vmsda Enthusiast Posts: 26 Karma: 29748 Join Date: Sep 2012 Device: Pocketbook	How to change Genre of a book in the Library? Is it possible to do it without deleting and reloading it? Thanks.

02-10-2015, 05:44 PM	#4
rkomar Wizard Posts: 3,041 Karma: 18821071 Join Date: Oct 2010 Location: Sudbury, ON, Canada Device: PRS-505, PB 902, PRS-T1, PB 623, PB 840, PB 633	Just out of curiosity, I looked at explorer-2.db in more detail using the sqlite3 commandline program on my linux box. The books_impl table contains a book number for each title. The booktogenre table contains a genre value for each book number. The genres tables contains a genre title for each value. So, it does look like that is the place to change the genre of a book without changing the book. You would just have to change the right line in the booktogenre table. If you were originally wondering if there was some way to do it in the Library UI, I haven't seen it. The metadata in the books seems to be unchangeable via the UI. Last edited by rkomar; 02-10-2015 at 05:47 PM.

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02-10-2015, 04:24 AM	#2
rkomar Wizard Posts: 3,041 Karma: 18821071 Join Date: Oct 2010 Location: Sudbury, ON, Canada Device: PRS-505, PB 902, PRS-T1, PB 623, PB 840, PB 633	It might be possible. The information would be stored in a database file on the device. It looks to me like it could be in /system/explorer-2/explorer-2.db, which is an SQLITE database file. If you know a thing or two about databases, and especially SQLITE, then you could probably change the genre value for a particular book in the database. I don't know how long it would last before the book was probed and the database updated again with the original genre value.

02-10-2015, 05:18 AM	#3
vmsda Enthusiast Posts: 26 Karma: 29748 Join Date: Sep 2012 Device: Pocketbook	Thank you.

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