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| # | |
| # Pyserini: Reproducible IR research with sparse and dense representations | |
| # | |
| # Licensed under the Apache License, Version 2.0 (the "License"); | |
| # you may not use this file except in compliance with the License. | |
| # You may obtain a copy of the License at | |
| # | |
| # http://www.apache.org/licenses/LICENSE-2.0 | |
| # | |
| # Unless required by applicable law or agreed to in writing, software | |
| # distributed under the License is distributed on an "AS IS" BASIS, | |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| # See the License for the specific language governing permissions and | |
| # limitations under the License. | |
| # | |
| """ | |
| This module provides Pyserini's Python search interface to Anserini. The main entry point is the ``LuceneGeoSearcher`` | |
| class, which wraps the Java class ``SimpleGeoSearcher`` in Anserini. | |
| """ | |
| import logging | |
| from typing import List | |
| from pyserini.pyclass import autoclass | |
| from pyserini.search import JQuery | |
| logger = logging.getLogger(__name__) | |
| # Wrappers around Lucene classes | |
| JSort = autoclass('org.apache.lucene.search.Sort') | |
| JLatLonDocValuesField = autoclass('org.apache.lucene.document.LatLonDocValuesField') | |
| JLatLonShape = autoclass('org.apache.lucene.document.LatLonShape') | |
| JQueryRelation = autoclass('org.apache.lucene.document.ShapeField$QueryRelation') | |
| JLongPoint = autoclass('org.apache.lucene.document.LongPoint') | |
| # Wrappers around Anserini classes | |
| JGeoSearcher = autoclass('io.anserini.search.SimpleGeoSearcher') | |
| JGeoSearcherResult = autoclass('io.anserini.search.SimpleSearcher$Result') | |
| class LuceneGeoSearcher: | |
| """Wrapper class for ``SimpleGeoSearcher`` in Anserini. | |
| Parameters | |
| ---------- | |
| index_dir : str | |
| Path to Lucene index directory. | |
| """ | |
| def __init__(self, index_dir: str): | |
| self.index_dir = index_dir | |
| self.object = JGeoSearcher(index_dir) | |
| def search(self, q: JQuery, k: int = 10, sort: JSort = None) -> List[JGeoSearcherResult]: | |
| """Search the collection. | |
| Parameters | |
| ---------- | |
| q : JQuery | |
| Lucene query. | |
| k : int | |
| Number of hits to return. | |
| sort : JSort | |
| Optional distance sort that allows searcher to return results based on distance to a point. | |
| Returns | |
| ------- | |
| List[JGeoSearcherResult] | |
| List of search results. | |
| """ | |
| if sort: | |
| hits = self.object.searchGeo(q, k, sort) | |
| else: | |
| hits = self.object.searchGeo(q, k) | |
| return hits | |
| def close(self): | |
| """Close the searcher.""" | |
| self.object.close() | |