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ADFA-5212: Add a corrected docdb script for the Dynamic Bookshelf - #1707
ADFA-5212: Add a corrected docdb script for the Dynamic Bookshelf#1707davidschachterADFA wants to merge 7 commits into
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The three prototypes attached to the ticket do not run. Both table scripts write `CREATE TABLE <name> IF NOT EXISTS`, where SQLite wants the clause before the name, and the template script has no IF NOT EXISTS at all, so `CREATE TABLE Templates` fails against any real database. Worse than failing, they half-apply: the sqlite3 CLI reports each error, carries on, and reaches COMMIT. Running them against a copy of the 14-Aug database left 22 Bookshelf rows -- the 7 good books on top of the 15 broken ones -- and updated none of the existing category descriptions, because ids 1-5 collided on the primary key. This replaces all three with one script, since the sections depend on each other and share a safety harness: - `.bail on`, so an error aborts instead of persisting partial work. - Idempotent. Categories are inserted if missing and their descriptions refreshed, never re-keyed, because Bookshelf.bookCategoryID points at those ids. Books are rebuilt. The template is updated in place if present. - No hard-coded Content.id. The prototype's own comment warned those would be wrong elsewhere; they are AUTOINCREMENT values assigned at import. Books resolve by Content.path, which is stable across rebuilds and fails safe: a path that is missing inserts nothing rather than attaching a book to whatever row now holds that id. - Verification that names what broke. SQLite prohibits subqueries in CHECK, so violations are collected into a temp table, printed, and then gated on a CHECK that fails the transaction. The template blob is the revision verified on the device on 19-Aug: 1,261 bytes, debug output removed, category names matching the seed data. Tested against a copy of the 14-Aug database: converges from 5 categories / 15 unusable rows / no template to 6 / 7 / installed, is unchanged by two further runs, and rolls back with a named diagnostic when a book path is missing from Content or the template blob is truncated. Two lessons added to docs/documentation-database.md: never hard-code a Content.id, and how to write a row-counting invariant given that CHECK cannot hold a subquery (including the HAVING that keeps an aggregate check from firing on a clean run).
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📝 Walkthrough
WalkthroughThe pull request adds an idempotent SQLite migration for the dynamic bookshelf. It creates and seeds bookshelf data, resolves content by path, updates the Pebble template, validates invariants transactionally, and documents path-based ID resolution and temporary-table checks. ChangesDynamic bookshelf
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk:🟠 High · up to The script currently deletes every Bookshelf row and validates only its seven seeded rows, so it can commit while removing books managed by other ingestion paths; it also does not ensure the documented cleanup behavior when Content rows are deleted. This is a high merge-readiness risk that should be fixed or explicitly guarded before merge. Sequence Diagram(s)sequenceDiagram
participant Migration
participant Content
participant SQLite
participant Template
participant Validation
Migration->>Content: Resolve seeded books by Content.path
Content-->>Migration: Return matching content IDs
Migration->>SQLite: Rebuild Bookshelf rows
Migration->>Template: Insert or update bookshelf template
Migration->>Validation: Check migration invariants
Validation-->>Migration: Commit or trigger rollback
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🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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In `@docs/docdb/ADFA-5212-dynamic-bookshelf.sql`:
- Line 150: Update the migration’s Bookshelf cleanup and validation so it
affects only the seed rows owned by this migration, such as by scoping
operations to the seeded paths; preserve unrelated plugin-ingested books.
Alternatively, explicitly establish and enforce an exclusive ownership contract
for Bookshelf before retaining the full-table deletion.
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DELETE FROM Bookshelf took out plugin-contributed books along with the rows being re-seeded, and the checks afterwards still passed because they counted only the seeded rows they expected to find -- so the loss was silent. The delete is now scoped to rows this script owns: the ones it is about to re-seed, and the ADFA-5204 placeholder rows, which are identifiable by having no category to join to. A plugin row keeps a real bookCategoryID and a contentID outside the seed set, so it survives both clauses. The two count checks are scoped the same way, so a plugin's books neither satisfy them nor break them. Verified against a copy of the real database with a plugin-style row added: the previous version left 7 rows with that row gone and reported nothing; this one leaves 8 with the row intact, twice in a row. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Review of #1707 found three defects the script could not catch itself, because its own checks were narrower than its effects. The template called a filter-by-category macro once per category and named five, while the seed above defines six. General could never appear on the page -- and General is also WebServer's IFNULL fallback name for an uncategorised book. It now loops over the payload, so every category the query returns is rendered, and each row is visited once instead of five times. Display order comes from the query's ORDER BY BC.category rather than the call order; pinning a different order needs a sort column in BookCategories. The seeded descriptions held HTML entities. Pebble auto-escapes on output, so & reached the browser as &amp; and “ as visible markup, in three of the seven books. They are stored as the characters they stand for now; the response already declares utf-8. The 1261-byte template blob appeared twice, verbatim, in the INSERT and the UPDATE, guarded only by a length check -- so any length-neutral edit to one copy would install a different template on the fresh path than on the update path, and verification would pass. It lives in one temp table both statements read, and verification compares content rather than LENGTH() <> 1261, which is what let the escaping bug through. The DELETE loses its bookCategoryID IS NULL clause. It was meant to sweep up ADFA-5204 placeholder rows, but the AddBook trigger writes (contentID, CURRENT_TIMESTAMP || id) and nothing else, so a NULL category and a datetime-looking title are what every freshly ingested PDF has until someone curates it. The placeholder rows and the pending ones are the same rows and no WHERE clause separates them, while DeleteBook only fires on a Content DELETE, so anything removed here never returns. Uncurated rows are now reported by a whole-table check instead -- the ADFA-5204 symptom was a shelf holding rows nobody expected, which a check scoped to the seeded rows cannot see. Also corrects the co-author of Java, Java, Java: Ralph Walde, not Wade. Verified against a copy of a real documentation.db (2026-08-21, 238 MB): the script runs clean and reports no problems, re-running it is also clean, all six categories exist, and the stored template is byte-equal to the intended one. The template was then rendered through Pebble 4.1.1 with WebServer's own engine construction and gson settings, against the payload readBookshelf builds: General renders, there are zero occurrences of &amp; or of literal “/”, the three ampersands are escaped exactly once, and no empty description heading is emitted for a category whose description is null. Found in review of PR #1707.
davidschachterADFA
commented
Aug 26, 2026
Pushed 7b32e59. Four fixes, all verified against a real database and a real Pebble render rather than by reading. Every category renders. The template called a filter-by-category macro once per category and named five, while the seed defines six — so Descriptions are stored as text, not entities. Pebble auto-escapes on output, so One copy of the template. The blob appeared verbatim in both the INSERT and the UPDATE, guarded only by The CREATETRIGGERAddBook AFTER INSERT ON Content WHEN NEW.pathLIKE'%.pdf'BEGININSERT INTO Bookshelf (contentID, title) VALUES (NEW.id, CURRENT_TIMESTAMP||NEW.id);
ENDIt writes Also: the co-author of Java, Java, Java is Ralph Walde, not Wade. Verification. Against a copy of a real One thing this surfaced that belongs to #1700, not here: on a Galaxy Note 20 Ultra, |
The constraint this ticket exists for lived only in readBookshelf's KDoc. docs/documentation-database.md opens with "read this before writing/editing SQL against this database" and carries the list of gotchas found writing these scripts, and said nothing about it -- so the next person writes JSON_OBJECT, validates it under sqlite3 3.44 where JSON1 is built in, and ships a 500 that only appears on a device. The bullet says which functions, what the failure looks like, that the desktop will not warn you, and that every reader of this database is exposed -- a docdb-studio script, ToolTipManager, and PluginDocumentationManager as much as WebServer. Prompted by reproducing it on hardware while testing PR #1707: /pr/bs returned HTTP 500 with "no such function: JSON_OBJECT" on a Galaxy Note 20 Ultra, minutes after the same database served the same query fine under the desktop CLI.
The whole-table row-count check I added wrote its result into Problems. Problems is the abort list -- the Gate rolls the entire transaction back if it holds anything -- so an informational note made this script a guaranteed no-op on every database with an uncurated PDF. Which is every real database: the AddBook trigger creates exactly that state for each newly ingested book, as the comment a hundred lines above says. Reproduced on a synthetic database with the 7 seeded books plus one other PDF: "VERIFICATION FAILED: note: Bookshelf holds 8 rows...", CHECK constraint failed, rollback, BookCategories left at 0 and no template installed. It now prints instead of inserting, and the same fixture applies cleanly: 6 categories, 7 seeded books, the uncurated row untouched. TemplateBlob was the one temp table nothing dropped, so a second .read in the same sqlite3 session died on "table TemplateBlob already exists" -- against a script whose header promises running it twice is safe. Two runs in one session now give identical results. The template content check was tautological. It compared the stored template against TemplateBlob, two statements after the UPDATE that sets the stored template FROM TemplateBlob, so it could not fail whatever blob the script carried -- and my commit message claimed it caught "a wrong template of the right size". It checks the length against a literal instead, which can fail: a row the UPDATE did not match, or one another tool installed. It still cannot tell two different 905-byte templates apart, and now says so. Also corrected a claim about General. WebServer's inner join (B.bookCategoryID = BC.id) drops uncategorised books before IFNULL(BC.category, 'General') can label them, so that fallback only fires for a category row whose own name is NULL -- an uncurated book does not "render under General", it does not render at all. Found in review of PR #1707.
davidschachterADFA
commented
Aug 26, 2026
Pushed 47228e2 for the review findings. Three of the four were mine, from the previous round, and the first one made the script useless. The note rolled the migration back. The whole-table row-count check I added wrote into Reproduced before fixing, on a synthetic database with the 7 seeded books plus one other PDF: It prints now instead of inserting. Same fixture after the fix: 6 categories, 7 seeded books on the shelf, the uncurated row untouched.
The template content check was tautological. It compared the stored template against And a claim about General that the inner join makes false. One finding I'd push back on: the review suggests the seeded Still open and worth your call: the |
…SON1 (#1700) * ADFA-5179: Build the bookshelf payload in Kotlin, not with SQLite's JSON1 /pr/bs returned HTTP 500 on a Galaxy Note 20 Ultra (Android 13): "no such function: JSON_OBJECT". The query was fine -- it runs against the same documentation.db under desktop sqlite3 3.44 -- but that device's system SQLite has no JSON1 extension, so the bookshelf could not be opened at all. Nothing catches this before real hardware, since every desktop test passes. The JSON is now assembled from a plain relational query and gson, which work everywhere. Same keys, same nesting, same explicit nulls (gson gets serializeNulls, because JSON_OBJECT emitted "description": null and the bookshelf template was written against that), and the same 1/0 pdf flag rather than a boolean. Two behavior differences, both improvements, neither reachable in the data seen so far: - An empty bookshelf now renders as an empty page instead of failing. The old query turned it into a 500: group_concat over no rows is NULL, so the concatenated JSON was NULL and reading it as a blob threw. That case is not hypothetical -- the sdcard documentation.db copy on the test device has a NULL bookCategoryID on all 15 Bookshelf rows, so the join yields nothing and the endpoint would have failed there even with JSON1 present. - A path ending .PDF is flagged as a PDF. The old SUBSTR comparison was case-sensitive; the 15 PDFs in the database are all lowercase, so this changes nothing today. Grouping also collapses a NULL category into an existing "General" rather than producing two sections with the same name, since it groups by the coalesced label instead of the raw column. readBookshelf() takes the database as a parameter so the payload is testable without starting a server. Four tests cover the grouping and order, the pdf flag including the case difference, the empty bookshelf, and the exact JSON the template receives. Not yet verified on device: the phone was disconnected before this could be installed. What needs checking is that /pr/bs returns 200 both against the sdcard copy (expect an empty bookshelf, given its data) and against the installed asset database with the sdcard copy moved aside (expect real content). * ADFA-5179: Unmock in the bookshelf test's teardown The new test class left mockk's instrumentation installed for the rest of the JVM, and the next test to run in it -- BrotliDictionaryDecodeTest -- then failed in @BeforeClass with 'Failed to load Brotli native library'. Reproduced both ways: the full app suite passes with this class excluded and fails with it included, deterministically. Every other mockk-using test in this module already unmocks in teardown; this one just missed it. * ADFA-5179: Move the bookshelf query's fallbacks into Kotlin Review pointed at IFNULL(BC.category, 'General') and read it as dead code, on the grounds that the join already drops a book whose bookCategoryID is NULL. The join does drop those -- deliberately, since that is what the query this PR replaced did -- but the IFNULL is not about them: BookCategories.category has no NOT NULL constraint, so a book can be linked to a category row that has no label, and that is the case it covers. Both of the query's fallbacks are now expressed in Kotlin instead, which makes which case each one handles visible at the point it applies, and lets a test pin them: a category row with no label files its books under General, and a book with no title of its own shows its path. Neither was covered before, because the SQL is not exercised by unit tests -- the cursor is mocked. Behavior is unchanged in every case. * ADFA-5179: Keep an unlabelled category separate from a literal "General" The review is right. The old JSON1 query grouped by BC.category and applied IFNULL(BC.category, 'General') only when building the payload, so a category row with no label and a row labelled "General" were two groups that both rendered as "General", each with its own description. Coalescing before grouping merged them and kept whichever description came first. The maps are now keyed by the raw nullable category and the label is applied when the BookshelfCategory is constructed. This PR is a port whose whole claim is that the payload is identical, so a behaviour change here -- even a defensible one -- does not belong in it. Latent rather than live: no BookCategories row in the current database has a NULL category. The column is nullable, so the case is reachable. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * ADFA-5179: Group the bookshelf in one map, and survive a row without a path Three findings from the review of this PR. putIfAbsent was the wrong tool for "the first description wins". java.util.Map counts a key mapped to null as absent -- HashMap.putVal only skips the write when oldValue != null -- so a category whose first row had a NULL description was overwritten by whatever the next row carried, which is the opposite of what the comment claimed and what the query this replaced did. The two parallel maps keyed by the same category are now one map of a small holder, so the description is read once, when the group is created, and nothing can write it again. That also removes the second lookup per row and the possibility of the two maps disagreeing. The holder's type has to stay non-null for this to hold: getOrPut treats a null value as absent too, so a map of nullable descriptions would reintroduce the same bug in a different shape. A NULL Content.path took the whole endpoint down. cursor.getString(4) is a platform type, so handing it to BookshelfBook(link: String) inserts an intrinsic null check -- an NPE caught upstairs as an HTTP 500 for every book on the shelf, where the old SQL degraded to "link": null for the one row. The schema says NOT NULL and the maintained database honours it, but this endpoint exists because a shipped copy had NULLs nobody expected. The row is skipped and logged. Bookshelf, BookshelfCategory and BookshelfBook are internal rather than public. They are one endpoint's payload shape, and common's classes ship in the plugin-api coordinate; three very generic names did not belong in that surface. internal, not private: a private top-level class cannot be the return type of an internal function, and the tests in this module read them. Three tests added. Two of them fail against the code as it stood -- "expected: null but was : Arrived late" and a NullPointerException -- for the reasons they are named for. 276 app tests pass. Found in review of PR #1700. * ADFA-5179: Say what actually changed, and test the query that changed it Review findings from hal-eisen-adfa. The KDoc claimed the payload was identical. It is not, in two ways, both checked against the shipped database rather than reasoned about: Books within a category are now genuinely sorted by title. The old ORDER BY was inert for them -- it ordered the groups, while JSON_GROUP_ARRAY aggregated in scan order and B.title was a bare column under GROUP BY. Against the current documentation.db this reverses the two Java books, since a space sorts before a comma. Deterministic order is worth having; claiming nothing changed is not. The pdf flag is now case-insensitive, where SUBSTR(path, -4) == '.pdf' compared under BINARY collation. No shipped row spells the extension any other way -- GLOB '*.[Pp][Dd][Ff]' excluding '*.pdf' returns zero -- so nothing changes today, but the widening was undocumented. Nothing ran the new SQL. The existing tests hand readBookshelf canned cursor rows through a mockk matcher, so the column order, the joins and the ORDER BY were never executed -- on a ticket whose whole subject is a query that passed on a desktop and failed on a device. BookshelfQueryTest runs it against a real SQLite database. It earns its place: reordering the two columns both named `description` in the SELECT list, leaving the reader alone, fails that test and leaves all ten mock-based tests green. gsonForTest is gone. The test that pinned the payload's keys, nesting and explicit nulls asserted on a re-composed gson.toJson(readBookshelf(...)) -- the same expression as production, which is not the same thing as the production path, and could not fail if that line changed. Both now call bookshelfJson(). An empty shelf is logged. It is a 200 with an empty page either way, but it was indistinguishable from a working shelf in a bug report, and it is the state ADFA-5204 produced. The JSON keys are pinned with @SerializedName instead of being derived reflectively from field names. The template reads them literally, so a renamed field is a page of blanks with nothing failing. -dontobfuscate currently keeps them intact, but that is a global build flag two open tickets are changing, not a contract this payload should rest on. ServerConfig's eight fields were copied field-for-field between two test classes in the same package; both now call testServerConfig(). 281 app tests pass. Still open from the same review: the JSON round trip through text that instantiatePebbleTemplate immediately parses back into a map, which needs an overload taking a prepared context; and the unmockkAll coupling with BrotliDictionaryDecodeTest, which wants a shared rule rather than a copy per class. * ADFA-5179: Name the row the skip warning is about The warning said "Bookshelf row for content id {}" and logged cursor.getString(2), which is B.title -- the SELECT had no C.id. It pointed a reader at the wrong column while diagnosing the malformed-data case the branch exists for, and in that branch the title is often null too, so it identified nothing while claiming to. C.id is appended to the SELECT, not inserted: every read here is by positional index, so a column added anywhere else silently re-points the four above it. The cursor mock now answers a missing index with null rather than throwing, so a test row need only give the columns its case cares about, the way a NULL column would read. 308 app tests pass. Found in review of PR #1700. * ADFA-5179: Do not say "no rows" when rows were skipped The empty-shelf log claimed the query matched no rows. A row whose Content.path is NULL is skipped a few lines below, so the query can return rows and still leave nothing to serve -- in which case the line said something false about the database while diagnosing the case it exists for. It reports no categories now, and each skipped row already logs its own warning, which is what distinguishes the two states. Found in review of PR #1700. * ADFA-5179: Record the JSON1 constraint where SQL authors will see it The constraint this ticket exists for lived only in readBookshelf's KDoc. docs/documentation-database.md opens with "read this before writing/editing SQL against this database" and carries the list of gotchas found writing these scripts, and said nothing about it -- so the next person writes JSON_OBJECT, validates it under sqlite3 3.44 where JSON1 is built in, and ships a 500 that only appears on a device. The bullet says which functions, what the failure looks like, that the desktop will not warn you, and that every reader of this database is exposed -- a docdb-studio script, ToolTipManager, and PluginDocumentationManager as much as WebServer. Prompted by reproducing it on hardware while testing PR #1707: /pr/bs returned HTTP 500 with "no such function: JSON_OBJECT" on a Galaxy Note 20 Ultra, minutes after the same database served the same query fine under the desktop CLI. * ADFA-5179: Sort by what the page shows, and name the change that hides a category Review findings, all in the parts of this change that alter what a user sees. The books were sorted on B.title but displayed as B.title ?: C.path, and under BINARY collation with NULLs first that is a different order: an untitled book rendered as its path at the top of its section, and every capitalised title sorted ahead of every lower-case one. ORDER BY now uses COALESCE(B.title, C.path) COLLATE NOCASE, so the sort key is the string on the page. The KDoc claimed the books were "genuinely sorted by title" with no qualification; the new test fails against the old clause, putting d/zebra.pdf first. A category whose books all have a NULL Content.path now disappears entirely. The old query emitted the section with "link": null in it -- broken but present -- because it built JSON per row before any filtering; skipping the row here happens before its group exists. The skip is still right, but it was a fourth behaviour change absent from the KDoc's list of three. Now listed, and pinned by a test. Both new log lines are gated on debugEnabled, like everything else on this path. On the database this ticket exists for -- every Bookshelf row joining to nothing -- the empty shelf is the steady state, so the info line fired on every page load, and the per-row warning was unbounded. BookshelfCategory.books is handed a copy. It is typed as a List but was the accumulator's own MutableList, which a future caller that keeps the map could mutate afterwards. Also: a test now pins that an empty shelf serialises to {"result":[]} rather than something blank -- instantiatePebbleTemplate throws for a blank or "null" context, and that guard sits outside this endpoint's try/catch, so the empty-page promise depended on a property nothing checked. And a comment miscounted the columns preceding C.id as four. 310 app tests pass. Found in review of PR #1700. --------- Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
Replaces the three prototype scripts attached to ADFA-5212 with one that runs.
Why the prototypes don't
Both table scripts write
CREATE TABLE <name> IF NOT EXISTS— SQLite wants that clause before the name, so each is a parse error — and the template script has noIF NOT EXISTSat all, soCREATE TABLE Templatesfails against any real database.Worse than failing, they half-apply. The sqlite3 CLI reports each error, carries on, and reaches
COMMIT. Running all three against a copy of the 14-Aug database left 22Bookshelfrows — the 7 good books stacked on top of the 15 broken ones from ADFA-5204 — and refreshed none of the existing category descriptions, because ids 1–5 collided on the primary key and were skipped.What this one does differently
.bail on, so an error aborts and rolls back instead of persisting partial work.Bookshelf.bookCategoryIDpoints at those ids, soINSERT OR REPLACEwould quietly break the join. Books are rebuilt. The template is updated in place if present.Content.id. The prototype's own comment warned they'd be wrong elsewhere: they'reAUTOINCREMENTvalues assigned at import, and its 53507–53514 match neither my copy (77433–77445, 92643–92644) nor anything stable. Books resolve byContent.path, which survives a rebuild and fails safe — a missing path inserts nothing rather than attaching a book to whatever row now holds that id.CHECK, so violations are collected into a temp table, printed, then gated on aCHECKthat fails the transaction.The template blob is the revision verified on device on 19 Aug: 1,261 bytes, debug output removed (it was most of the rendered page), category names matching the seed data.
Testing
Against a copy of the 14-Aug database:
Contentthese seeded book paths are missing from Content: …/PebbleTemplateGuide.pdf, plus the row-count and join-count mismatches, then rolls back — the 15 original rows untouchedexpected one bookshelf template of 1261 bytes, found 1 row(s) of 1260 bytes, rolls backContenttableTwo lessons went into
docs/documentation-database.mdalongside the existing ADFA-5088 ones: never hard-code aContent.id, and how to write a row-counting invariant whenCHECKcan't hold a subquery — including theHAVING COUNT(*) > 0that stops an aggregate check from firing on a clean run (an aggregate with noGROUP BYreturns one row even when nothing matched, soGROUP_CONCATis NULL and aNOT NULLcolumn fails).Scope
This is a patch script, which is the same shape as ADFA-5088's. The ticket's actual ask is that docdb-studio emit these tables, so this is the stopgap that makes a correct database reachable today and a reference for what the generator should produce — not a substitute for it.
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