pub async fn where_used_levels(
pool: &PgPool,
actor: &Actor,
item_id: Uuid,
levels: i32,
) -> AppResult<Vec<WhereUsedLevel>>Expand description
Multi-level where-used: every BOM line that uses the item or (up to
levels levels up) one of its parents. Like the single-level report it
looks at the BOMs of all revisions. Each item is reported on the lowest
level it is reached on: the walk goes up one level per query (the parents
not seen before form the next level), so a part used in thousands of
assemblies costs one query per level instead of a recursive expansion
of every path. The report stops at MAX_WHERE_USED_ROWS rows.