fix: digest real production plans (nesting depth, Object table names, character refs)

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Measured against a 2.7 MB production plan that failed to import:
- maxNestedTags: real spaghettified plans nest 2729 tags deep and fast-xml-parser caps at 128, which surfaced as 'Maximum nested tags exceeded' and blamed the export. Raised to 20000; the 12 MB input cap bounds the worst case.
- table names live on <Object>, not on <IndexScan>/<TableScan>. The digest reported 0 tables for a plan with 51 objects; the analyst model never saw a table name. Now 37 distinct tables.
- SSMS writes StatementText with numeric character references (&#xD;&#xA; on every line, 90 in this plan). Attribute/tag processors decode them, so the model gets SQL instead of entity noise.
- 3 new digest tests, each from one of the three measurements above. 39 unit tests pass.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

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This commit is contained in:

ahmed mohammed

2026-09-22 11:16:18 +03:00

co-authored by Claude Opus 4.7

parent 4b5c19b5d2

commit 3fa436103a

4 changed files with 104 additions and 2 deletions

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plan-cxpaket.sqlplan

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