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[EXP] try out making a cover for the prefetch results #1853

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[EXP] try out making a cover for the prefetch results #1853

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16 changes: 15 additions & 1 deletion src/sourmash/index/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -717,13 +717,27 @@ def __init__(self, query_mh):
# cannot add matches once query has started.
self.query_started = 0

self.seen = set()

def add(self, ss, location=None, require_overlap=True):
"Add this signature in as a potential match."
if self.query_started:
raise ValueError("cannot add more signatures to counter after peek/consume")

# @CTB
cmp_mh = ss.minhash.downsample(scaled=self.orig_query_mh.scaled)
if 1:
hashes = set(ss.minhash.hashes)
hashes = hashes - self.seen
self.seen.update(hashes)
if len(hashes) != len(ss.minhash):
print('DIFF', len(self.seen))
new_mh = ss.minhash.copy_and_clear()
new_mh.add_many(hashes)
cmp_mh = new_mh

# upon insertion, count & track overlap with the specific query.
overlap = self.orig_query_mh.count_common(ss.minhash, True)
overlap = self.orig_query_mh.count_common(cmp_mh, True)
if overlap:
i = len(self.siglist)

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