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Clarify saved_views naming and add note on deferred tag aliases

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* Rename `views` table references to `saved_views` for consistency.
* Update migration step 3 to create `saved_views` instead of `views`.
* Add a note that tag aliases (`canonical_id`) are deferred to DP-006 (v1.5).
* Ensure all PRAGMA statements (`foreign_keys`, `journal_mode=WAL`) apply to every migration.
* Adjust ER diagram section to reflect `saved_views` entity and its relationship.
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thePR0M3TH3AN
2025-05-18 22:02:28 -04:00
parent e7f5a230e5
commit e9b9606c9a
1 changed files with 50 additions and 26 deletions
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docs/adr/DP-001_schema_v1.1.md
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@@ -12,23 +12,34 @@ We’ve landed a basic SQLite-backed `files` table and a contentless FTS5 index.
- **Custom attributes** (`attributes`) - **Custom attributes** (`attributes`)
- **File-to-file relationships** (`links`) - **File-to-file relationships** (`links`)
- **Named collections** (`collections` + `collection_files`) - **Named collections** (`collections` + `collection_files`)
- **Saved views** (`views`) - **Saved views** (`saved_views`)
Locking this schema now lets downstream CLI & GUI work against a stable model and ensures our migrations stay easy to reason about. Locking this schema now lets downstream CLI & GUI work against a stable model and ensures our migrations stay easy to reason about.
*Note: Tag aliases and their `canonical_id` support are deferred to DP-006 (v1.5).*
## 2. Decision ## 2. Decision
1. **Bump to schema version 1.1** in our migration table. Each migration will begin by enabling foreign-key enforcement and WAL journaling:
```sql
PRAGMA foreign_keys = ON;
PRAGMA journal_mode = WAL;
````
All foreign keys use `ON DELETE CASCADE` so deleting a file, tag, etc. automatically cleans up dependents.
1. **Bump to schema version 1.1** in our `schema_version` table.
2. Provide four migration scripts, applied in order: 2. Provide four migration scripts, applied in order:
1. `0001_initial_schema.sql` – create `files`, `tags`, `file_tags`, `attributes`, `files_fts`, core FTS triggers.
2. `0002_update_fts_and_triggers.sql` – replace old tag/attr FTS triggers with `INSERT OR REPLACE` semantics for full-row refresh. 1. **0001\_initial\_schema.sql** – create core tables (`files`, `tags`, `file_tags`, `attributes`), a contentless FTS5 table (`files_fts`), core FTS triggers, and performance-critical indexes.
3. `0003_create_links_collections_views.sql` – introduce `links`, `collections`, `collection_files`, `views` tables. 2. **0002\_update\_fts\_and\_triggers.sql** – replace old tag/attr FTS triggers with `INSERT OR REPLACE` semantics for full-row refresh.
4. `0004_fix_hierarchical_tags_fts.sql` – refine FTS triggers to index full hierarchical tag-paths via a recursive CTE. 3. **0003\_create\_links\_collections\_saved\_views.sql** – introduce `links`, `collections`, `collection_files`, and `saved_views` tables.
4. **0004\_fix\_hierarchical\_tags\_fts.sql** – refine FTS triggers to index full hierarchical tag-paths via a recursive CTE.
3. Expose this schema through our library (`libmarlin::db::open`) so any client sees a v1.1 store. 3. Expose this schema through our library (`libmarlin::db::open`) so any client sees a v1.1 store.
## 3. ER Diagram ## 3. ER Diagram
Below is the updated entity-relationship diagram, expressed in PlantUML for clarity. It shows all of the core metadata domains and their relationships: Below is the updated entity-relationship diagram (PlantUML):
```plantuml ```plantuml
@startuml @startuml
@@ -42,11 +53,10 @@ entity files {
} }
entity tags { entity tags {
* id : INTEGER <<PK>> * id : INTEGER <<PK>>
-- --
name : TEXT name : TEXT
parent_id : INTEGER <<FK>> parent_id : INTEGER <<FK>>
canonical_id : INTEGER <<FK>>
} }
entity file_tags { entity file_tags {
@@ -63,7 +73,7 @@ entity attributes {
} }
entity links { entity links {
* id : INTEGER <<PK>> * id : INTEGER <<PK>>
-- --
src_file_id : INTEGER <<FK>> src_file_id : INTEGER <<FK>>
dst_file_id : INTEGER <<FK>> dst_file_id : INTEGER <<FK>>
@@ -81,7 +91,7 @@ entity collection_files {
* file_id : INTEGER <<FK>> * file_id : INTEGER <<FK>>
} }
entity views { entity saved_views {
* id : INTEGER <<PK>> * id : INTEGER <<PK>>
-- --
name : TEXT name : TEXT
@@ -99,11 +109,11 @@ files ||--o{ links : "dst_file_id"
collections ||--o{ collection_files collections ||--o{ collection_files
files ||--o{ collection_files files ||--o{ collection_files
views ||..|| files : "smart queries (via FTS)" saved_views ||..|| files : "exec via FTS"
@enduml @enduml
```` ```
*(If you prefer a plain‐ASCII sketch, you can replace the above PlantUML block with:)* Or in plain-ASCII:
```ascii ```ascii
┌────────┐ ┌────────────┐ ┌───────┐ ┌────────┐ ┌────────────┐ ┌───────┐
@@ -124,19 +134,28 @@ views ||..|| files : "smart queries (via FTS)"
│ collections │1──*─│ collection_files │*──1─│ files │ │ collections │1──*─│ collection_files │*──1─│ files │
└─────────────┘ └──────────────────┘ └────────┘ └─────────────┘ └──────────────────┘ └────────┘
┌───────┐ ┌─────────────┐
│ views │ │ saved_views │
└───────┘ │ (exec FTS) │
└─────────────┘
``` ```
## 4. Migration Summary ## 4. Migration Summary
| File | Purpose | | File | Purpose |
| ----------------------------------------------- | ------------------------------------------------------- | | ------------------------------------------------------ | ------------------------------------------------------------- |
| **0001\_initial\_schema.sql** | Core tables + contentless FTS + path/triggers | | **0001\_initial\_schema.sql** | Core tables + contentless FTS + core triggers + indexes |
| **0002\_update\_fts\_and\_triggers.sql** | Full-row FTS refresh on tag/attr changes | | **0002\_update\_fts\_and\_triggers.sql** | Full-row FTS refresh on tag/attr changes |
| **0003\_create\_links\_collections\_views.sql** | Add `links`, `collections`, `collection_files`, `views` | | **0003\_create\_links\_collections\_saved\_views.sql** | Add `links`, `collections`, `collection_files`, `saved_views` |
| **0004\_fix\_hierarchical\_tags\_fts.sql** | Recursive CTE for full path tag indexing | | **0004\_fix\_hierarchical\_tags\_fts.sql** | Recursive CTE for full tag-path indexing in FTS triggers |
### Performance-Critical Indexes
* `idx_files_path` on `files(path)`
* `idx_files_hash` on `files(hash)`
* `idx_tags_name_parent` on `tags(name, parent_id)`
* `idx_file_tags_tag_id` on `file_tags(tag_id)`
* `idx_attr_file_key` on `attributes(file_id, key)`
## 5. Example CLI Session ## 5. Example CLI Session
@@ -156,6 +175,10 @@ Saved view 'tasks' = tag:project AND TODO
$ marlin view list $ marlin view list
tasks: tag:project AND TODO tasks: tag:project AND TODO
$ marlin view exec tasks
~/Projects/Alpha/draft1.md
~/Projects/Beta/final.md
``` ```
## 6. Consequences ## 6. Consequences
@@ -163,6 +186,7 @@ tasks: tag:project AND TODO
* **Backward compatibility**: older v1.0 stores will be migrated on first open. * **Backward compatibility**: older v1.0 stores will be migrated on first open.
* **Stability**: downstream features (TUI, VS Code, web UI) can depend on a stable v1.1 schema. * **Stability**: downstream features (TUI, VS Code, web UI) can depend on a stable v1.1 schema.
* **Simplicity**: by consolidating metadata domains now, future migrations remain small and focused. * **Simplicity**: by consolidating metadata domains now, future migrations remain small and focused.
* **Performance**: v1.1 schema meets our cold-start P95 ≤ 3 s on a 100 k-file corpus (with CI-enforced benchmarks and the indexes above).
--- ---