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Make set algorithm return None when nothing can be returned

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many 2021-04-06 15:03:41 +02:00
parent b3e2280bb9
commit 17c8c6f945
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1 changed files with 15 additions and 4 deletions
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19
milli/src/search/criteria/attribute.rs
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@ -71,7 +71,18 @@ impl<'t> Criterion for Attribute<'t> {
},
}
} else {
set_compute_candidates(self.ctx, flattened_query_tree, candidates, wdcache)?
let found_candidates = set_compute_candidates(self.ctx, flattened_query_tree, candidates, wdcache)?;
match found_candidates {
Some(candidates) => candidates,
None => {
return Ok(Some(CriterionResult {
query_tree: self.query_tree.take(),
candidates: self.candidates.take(),
bucket_candidates: take(&mut self.bucket_candidates),
}));
},
}
};
candidates.difference_with(&found_candidates);
@ -414,11 +425,11 @@ fn set_compute_candidates<'t>(
branches: &Vec<Vec<Vec<Query>>>,
allowed_candidates: &RoaringBitmap,
wdcache: &mut WordDerivationsCache,
) -> anyhow::Result<RoaringBitmap>
) -> anyhow::Result<Option<RoaringBitmap>>
{
let mut branches_heap = initialize_query_level_iterators(ctx, branches, wdcache)?;
let lowest_level = TreeLevel::min_value();
let mut final_candidates = RoaringBitmap::new();
let mut final_candidates = None;
while let Some(mut branch) = branches_heap.peek_mut() {
let is_lowest_level = branch.tree_level == lowest_level;
@ -427,7 +438,7 @@ fn set_compute_candidates<'t>(
candidates.intersect_with(&allowed_candidates);
if candidates.len() > 0 && is_lowest_level {
// we have candidates, but we can't dig deeper, return candidates.
final_candidates = std::mem::take(candidates);
final_candidates = Some(std::mem::take(candidates));
break;
} else if candidates.len() > 0 {
// we have candidates, lets dig deeper in levels.