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9aa2f8dc40
Cards had developed quite a lot of cruft from incremental changes, and a number of important attributes were stored in names that had no bearing to their actual use. Added: - position, which new cards will be sorted on in the future - flags, which is reserved for future use Renamed: - type to queue - relativeDelay to type - noCount to lapses Removed: - all new/young/matureEase counts; the information is in the revlog - firstAnswered, lastDue, lastFactor, averageTime and totalTime for the same reason - isDue, spaceUntil and combinedDue, because they are no longer used. Spaced cards will be implemented differently in a coming commit. - priority - yesCount, because it can be inferred from reps & lapses - tags; they've been stored in facts for a long time now Also compatibility with deck versions less than 65 has been dropped, so decks will need to be upgraded to 1.2 before they can be upgraded by the dev code. All shared decks are on 1.2, so this should hopefully not be a problem.
180 lines
6.8 KiB
Python
180 lines
6.8 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright: Damien Elmes <anki@ichi2.net>
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# License: GNU GPL, version 3 or later; http://www.gnu.org/copyleft/gpl.html
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DECK_VERSION = 75
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from anki.db import *
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from anki.lang import _
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from anki.media import rebuildMediaDir
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def upgradeSchema(engine, s):
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"Alter tables prior to ORM initialization."
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ver = s.scalar("select version from decks limit 1")
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# add a checksum to fields
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if ver < 71:
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try:
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s.execute(
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"alter table fields add column chksum text "+
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"not null default ''")
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except:
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pass
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if ver < 75:
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# copy cards into new temporary table
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sql = s.scalar(
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"select sql from sqlite_master where name = 'cards'")
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sql = sql.replace("TABLE cards", "temporary table cards2")
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s.execute(sql)
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s.execute("insert into cards2 select * from cards")
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# drop the old cards table and create the new one
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s.execute("drop table cards")
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import cards
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metadata.create_all(engine, tables=[cards.cardsTable])
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# move data across and delete temp table
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s.execute("""
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insert into cards select id, factId, cardModelId, created, modified,
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question, answer, 0, ordinal, 0, relativeDelay, type, lastInterval, interval,
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due, factor, reps, successive, noCount from cards2""")
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s.execute("drop table cards2")
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return ver
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def updateIndices(deck):
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"Add indices to the DB."
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# due counts, failed card queue
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deck.db.statement("""
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create index if not exists ix_cards_queueDue on cards
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(queue, due, factId)""")
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# counting cards of a given type
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deck.db.statement("""
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create index if not exists ix_cards_type on cards
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(type)""")
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# sync summaries
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deck.db.statement("""
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create index if not exists ix_cards_modified on cards
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(modified)""")
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deck.db.statement("""
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create index if not exists ix_facts_modified on facts
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(modified)""")
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# card spacing
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deck.db.statement("""
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create index if not exists ix_cards_factId on cards (factId)""")
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# fields
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deck.db.statement("""
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create index if not exists ix_fields_factId on fields (factId)""")
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deck.db.statement("""
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create index if not exists ix_fields_fieldModelId on fields (fieldModelId)""")
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deck.db.statement("""
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create index if not exists ix_fields_chksum on fields (chksum)""")
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# media
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deck.db.statement("""
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create unique index if not exists ix_media_filename on media (filename)""")
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deck.db.statement("""
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create index if not exists ix_media_originalPath on media (originalPath)""")
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# deletion tracking
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deck.db.statement("""
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create index if not exists ix_cardsDeleted_cardId on cardsDeleted (cardId)""")
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deck.db.statement("""
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create index if not exists ix_modelsDeleted_modelId on modelsDeleted (modelId)""")
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deck.db.statement("""
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create index if not exists ix_factsDeleted_factId on factsDeleted (factId)""")
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deck.db.statement("""
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create index if not exists ix_mediaDeleted_factId on mediaDeleted (mediaId)""")
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# tags
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txt = "create unique index if not exists ix_tags_tag on tags (tag)"
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try:
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deck.db.statement(txt)
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except:
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deck.db.statement("""
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delete from tags where exists (select 1 from tags t2 where tags.tag = t2.tag
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and tags.rowid > t2.rowid)""")
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deck.db.statement(txt)
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deck.db.statement("""
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create index if not exists ix_cardTags_tagCard on cardTags (tagId, cardId)""")
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deck.db.statement("""
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create index if not exists ix_cardTags_cardId on cardTags (cardId)""")
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def upgradeDeck(deck):
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"Upgrade deck to the latest version."
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if deck.version < DECK_VERSION:
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prog = True
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deck.startProgress()
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deck.updateProgress(_("Upgrading Deck..."))
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if deck.utcOffset == -1:
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# we're opening a shared deck with no indices - we'll need
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# them if we want to rebuild the queue
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updateIndices(deck)
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oldmod = deck.modified
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else:
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prog = False
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if deck.version < 65:
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raise Exception("oldDeckVersion")
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# skip a few to allow for updates to stable tree
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if deck.version < 70:
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# update dynamic indices given we don't use priority anymore
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for d in ("intervalDesc", "intervalAsc", "randomOrder",
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"dueAsc", "dueDesc"):
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deck.db.statement("drop index if exists ix_cards_%s2" % d)
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deck.db.statement("drop index if exists ix_cards_%s" % d)
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deck.updateDynamicIndices()
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# remove old views
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for v in ("failedCards", "revCardsOld", "revCardsNew",
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"revCardsDue", "revCardsRandom", "acqCardsRandom",
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"acqCardsOld", "acqCardsNew"):
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deck.db.statement("drop view if exists %s" % v)
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deck.version = 70
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deck.db.commit()
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if deck.version < 71:
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# remove the expensive value cache
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deck.db.statement("drop index if exists ix_fields_value")
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# add checksums and index
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deck.updateAllFieldChecksums()
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updateIndices(deck)
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deck.db.execute("vacuum")
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deck.db.execute("analyze")
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deck.version = 71
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deck.db.commit()
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if deck.version < 72:
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# this was only used for calculating average factor
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deck.db.statement("drop index if exists ix_cards_factor")
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deck.version = 72
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deck.db.commit()
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if deck.version < 73:
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# remove stats, as it's all in the revlog now
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deck.db.statement("drop table if exists stats")
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deck.version = 73
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deck.db.commit()
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if deck.version < 74:
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# migrate revlog data to new table
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deck.db.statement("""
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insert into revlog select
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time, cardId, ease, reps, lastInterval, nextInterval, nextFactor,
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min(thinkingTime, 60), 0 from reviewHistory""")
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deck.db.statement("drop table reviewHistory")
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# convert old ease0 into ease1
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deck.db.statement("update revlog set ease = 1 where ease = 0")
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# remove priority index
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deck.db.statement("drop index if exists ix_cards_priority")
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deck.version = 74
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deck.db.commit()
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if deck.version < 75:
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# suspended cards don't use ranges anymore
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deck.db.execute("update cards set queue=-1 where queue between -3 and -1")
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deck.db.execute("update cards set queue=-2 where queue between 3 and 5")
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deck.db.execute("update cards set queue=-3 where queue between 6 and 8")
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# new indices for new cards table
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updateIndices(deck)
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deck.version = 75
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deck.db.commit()
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# executing a pragma here is very slow on large decks, so we store
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# our own record
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if not deck.getInt("pageSize") == 4096:
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deck.db.commit()
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deck.db.execute("pragma page_size = 4096")
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deck.db.execute("pragma legacy_file_format = 0")
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deck.db.execute("vacuum")
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deck.setVar("pageSize", 4096, mod=False)
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deck.db.commit()
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if prog:
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assert deck.modified == oldmod
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deck.finishProgress()
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