Deep dive into Foswiki focused on its deltas from TWiki (not the shared
lineage): the pluggable Foswiki::Store backend (RcsWrap/RcsLite/PlainFile)
behind a versioned interface via Foswiki::Meta, the OO/MVC core rewrite,
Foswiki::Func + registerTagHandler, DataForms + MetaDataPlugin multi-record,
and WysiwygPlugin TML<->HTML round-trip. The store abstraction is logged as
prior art for shard-wiki's own adapter contract (SHARD-WP-0002).
Catalog (now 43 UCs):
- UC-42 read/write a non-Markdown shard via lossless syntax translation
(Markdown-first for prose; Foswiki WysiwygPlugin is proof)
- UC-43 tolerate a shard's storage-backend swap (RCS<->PlainFile) under a
stable identity
- enrich UC-39 (multi-record metadata) and UC-40 (PlainFile direct-attach)
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Deep dive into TWiki as the file-based Perl counterpoint to XWiki: flat-file +
RCS store (data/<Web>/<Topic>.txt), Webs/Topics, TWiki Forms storing fields as
%META% in the topic text, TWikiML/variables, TWiki::Func API; the plugin handler
callback surface (initPlugin, commonTagsHandler, before/afterSaveHandler,
afterRenameHandler, REST handlers) and package types (Plugin/Skin/AddOn/Contrib);
per-topic ALLOW/DENY access control (origin of yawex's model); Foswiki fork.
Catalog (now 41 UCs):
- UC-40 attach a file-backed engine's on-disk store directly (dual-path attach)
- UC-41 import an engine's native file history (RCS .txt,v) into the journal
- enrich UC-06 (TWiki per-topic ACL lineage), UC-34 (file-embedded %META%),
UC-36 (RCS-import vs DB-supplement), UC-38 (TWiki handlers as adapter host)
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Deep dive into XWiki past the landscape scan: component/DI architecture,
document + class/object data model, oldcore, Hibernate storage + xwikircs
history, ObservationManager events, rendering pipeline, multi-wiki; the full
extension-interface surface (components, Java/wiki macros, script services,
UIX/UIXP, JAX-RS REST, event listeners, resource handlers); and the
extensions.xwiki.org ecosystem (XAR/JAR/WebJar, 900+ extensions).
Catalog:
- UC-38 make a wiki engine federation-capable via its native extension API
(composable integration — first engine-side-direction UC; XWiki is proof)
- UC-39 attach a wiki-as-application-platform shard (bodiless typed pages)
- enrich UC-31 (ObservationManager event-driven sync), UC-34 (XObject model),
UC-36 (xwikircs internal history) with concrete XWiki specifics
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Mine the one research dir not yet promoted (260608-wikiengines-overview) into
the catalog. Adds four heterogeneous-backend attachment scenarios the other
research didn't surface:
- UC-34 attach structured/semantic shard without lossy flattening (SMW, XWiki)
- UC-35 attach shard with coarse write granularity (TiddlyWiki single-file)
- UC-36 supply git-addressable history to internal-history engine (Confluence)
- UC-37 attach static export as read-only backup shard (MediaWiki dump)
Adds a `wikiengines` source token + traceability column and a wikiengines
mapping subsection. The scan mostly reinforced existing UCs and the L0→L4
ladder; its main yield is adapter-contract constraints tracked in SHARD-WP-0002.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
