DocsServiceImpl mirrors KvServiceImpl's script-as-gate authz pattern,
the empty-collection rejection, and the best-effort emitter call —
adding "data must be a JSON object" validation, NotFound on update of
a missing doc, and prev_data plumbing via repo.update returning the
prior data.
PostgresDocsRepo handles CRUD against the docs table. The find path
runs through the v1.1.2 query DSL parser (docs_filter::parse_filter)
before building parameterised SQL via sqlx::QueryBuilder:
* Every field-path segment + comparison value is bound as $N.
* jsonb_extract_path_text(data, $N1, $N2, ...) handles variable
depth without segment interpolation.
* Base WHERE is fixed: WHERE app_id = $1 AND collection = $2.
Filter conditions can only narrow, never widen. Load-bearing
test in sql_shape_tests pins this prefix on every emitted query
+ asserts no user string ever lands in the SQL text.
* $ne uses IS DISTINCT FROM (not <>) so missing paths + JSON nulls
are correctly included.
* $in binds the value list as TEXT[] via = ANY($N::text[]).
* $sort always appends a ", id ASC" tiebreaker for stable cursor
pagination semantics; $limit is clamped to MAX_FIND_LIMIT.
docs_filter is the AST + parser for the DSL. Operator allowlist is
explicit; any non-v1.1.2 operator throws UnsupportedOperator with a
v1.2 pointer. Snapshot tests pin the SDK-contract error strings so
changing them is a deliberate act.
Two new Capability variants — AppDocsRead and AppDocsWrite — map to
the existing Scope::ScriptRead and ScriptWrite per the seven-scope
commitment from v1.1.0. role_satisfies grants read at Viewer,
write at Editor (same trust shape as KV).
59 unit tests added across the three new files. All pass.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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