[labkey-jeckels]

Rationale

Two experiment code paths load tens or hundreds of thousands of rows into memory to produce a small result: the input roles shown with experiment run lists, and the classic data/sample Lineage panel.

Related Pull Requests

• https://github.com/LabKey/internalModules/pull/166

Changes

• Input roles are selected as distinct values in SQL instead of one row per run input (up to ~760K rows observed).
• The classic Lineage panel builds its grids from lineage row ids and a small distinct folder/type query instead of loading every data object, sample, and run in the item's full lineage. The full recursion is unchanged.
• The panel's grids now use a permission-checking container filter limited to the lineage's readable folders instead of the unsafe "everything" filter.

Tasks

• Claude Code Review
• Manual Testing @labkey-gokhano - Passed: tested on a private build on my dev box, see the comments section for details.
• Test Automation
• Check TeamCity
  • Nightly SM/FM postgres
  • Daily Postgres

[labkey-gokhano]

Manual testing: passed

Tested locally with this branch merged onto current develop, as an admin and as a user with Reader on one subfolder only.

Classic Lineage panel

Case	Result
Parents/children all of one sample type or data class	✅ Grid uses that type's own columns
Parents of mixed sample types or data classes	✅ Generic grid with all items
Grandparents / grandchildren	✅ Still shown; full recursion intact
No lineage	✅ Empty grids, no errors
Parent in another folder the user can read (Issue 38018)	✅ Shown
Reader: one parent in a readable folder, one not	✅ Only the readable parent shown; type detection uses readable items only
Reader: only parent is in an unreadable folder	✅ Empty grid, nothing leaks
Sample with 500 children	✅ Loads in under 0.1s

Input roles

Case	Result
Runs grid Input lookup columns	✅ Each role once, filled per run
Runs grid Export → Files role checkboxes	✅ Each role once
Derive samples role dropdown	⚪ Not tested; removed from develop in #8135

Not covered: lineage mixing data that has no data class (e.g. assay result files) with data class items, and roles that differ only by case.

Existing behavior, not from this PR: the Lineage grids hide their pager, so only the first 100 rows can be seen. Here that showed 100 of 500 children.