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-rw-r--r--gn3/api/search.py22
1 files changed, 18 insertions, 4 deletions
diff --git a/gn3/api/search.py b/gn3/api/search.py
index e497743..328baf5 100644
--- a/gn3/api/search.py
+++ b/gn3/api/search.py
@@ -148,6 +148,15 @@ def parse_position(spec: str) -> tuple[Maybe[int], Maybe[int]]:
return Just(max(0, point - width)), Just(point + width)
+def parse_position_field(location_slot: int, query: bytes) -> xapian.Query:
+ """Parse position and return a xapian query."""
+ start, end = parse_position(query.decode("utf-8"))
+ # TODO: Convert the xapian index to use bases instead of megabases.
+ to_megabases = lambda x: str(Decimal(x)/10**6)
+ return (xapian.NumberRangeProcessor(location_slot)
+ (start.maybe("", to_megabases), end.maybe("", to_megabases))) # type: ignore
+
+
def parse_location_field(species_query: xapian.Query,
chromosome_prefix: str, location_slot: int,
liftover_function: IntervalLiftoverFunction,
@@ -183,6 +192,7 @@ def parse_location_field(species_query: xapian.Query,
.maybe(xapian.Query.MatchNothing, make_query))
+# pylint: disable=too-many-locals
def parse_query(synteny_files_directory: Path, query: str):
"""Parse search query using GeneNetwork specific field processors."""
queryparser = xapian.QueryParser()
@@ -201,10 +211,14 @@ def parse_query(synteny_files_directory: Path, query: str):
queryparser.add_prefix("description", "XD")
range_prefixes = ["mean", "peak", "position", "peakmb", "additive", "year"]
for i, prefix in enumerate(range_prefixes):
- queryparser.add_rangeprocessor(xapian.NumberRangeProcessor(i, prefix + ":"))
- # Alias the position prefix with pos.
- queryparser.add_rangeprocessor(xapian.NumberRangeProcessor(range_prefixes.index("position"),
- "pos:"))
+ # Treat position specially since it needs its own field processor.
+ if prefix == "position":
+ position_field_processor = FieldProcessor(partial(parse_position_field, i))
+ queryparser.add_boolean_prefix(prefix, position_field_processor)
+ # Alias the position prefix with pos.
+ queryparser.add_boolean_prefix("pos", position_field_processor)
+ else:
+ queryparser.add_rangeprocessor(xapian.NumberRangeProcessor(i, prefix + ":"))
# Add field processors for synteny triplets.
species_shorthands = {"Hs": "human",