以下是一个简单的分页功能。
from whoosh import index
def _search(q):
wix = index.open_dir(settings.WHOOSH_INDEX_DIR)
term = Term("title", q) | Term("content", q)
page_id = 1
with wix.searcher() as s:
return s.search_page(term, page_id, pagelen=settings.ITEMS_PER_PAGE)
In [15]: p = _search("like")
In [16]: p.results[0].reader.is_closed
Out[16]: True
如果我尝试访问 Hit 的属性，则会出现 ReaderClosed 异常。
In [19]: p.results
Out[19]: <Top 10 Results for Or([Term('title', 'like'), Term('content', 'like')]) runtime=0.0214910507202>
[21]: p.results[0]["title"]
---------------------------------------------------------------------------
ReaderClosed Traceback (most recent call last)
/usr/local/lib/python2.7/dist-packages/Django-1.5.3-py2.7.egg/django/core/management/commands/shell.p yc in <module>()
----> 1 p.results[0]["title"]
/usr/local/lib/python2.7/dist-packages/whoosh/searching.pyc in __getitem__(self, fieldname)
1500
1501 def __getitem__(self, fieldname):
-> 1502 if fieldname in self.fields():
1503 return self._fields[fieldname]
1504
/usr/local/lib/python2.7/dist-packages/whoosh/searching.pyc in fields(self)
1388
1389 if self._fields is None:
-> 1390 self._fields = self.searcher.stored_fields(self.docnum)
1391 return self._fields
1392
/usr/local/lib/python2.7/dist-packages/whoosh/reading.pyc in stored_fields(self, docnum)
1197 def stored_fields(self, docnum):
1198 segmentnum, segmentdoc = self._segment_and_docnum(docnum)
-> 1199 return self.readers[segmentnum].stored_fields(segmentdoc)
1200
1201 # Per doc methods
/usr/local/lib/python2.7/dist-packages/whoosh/reading.pyc in stored_fields(self, docnum)
693 def stored_fields(self, docnum):
694 if self.is_closed:
--> 695 raise ReaderClosed
696 assert docnum >= 0
697 schema = self.schema
ReaderClosed:
我如何访问命中的属性？
最佳答案
浏览 whoosh 的文档 http://whoosh.readthedocs.org/en/latest/quickstart.html#the-searcher-object 我明白了这个问题。留在这里以防万一有人遇到同样的问题。
当“with”范围结束时，任何与搜索相关的文件描述符都将关闭。因此，似乎应该将结果集复制到另一个数据结构中，例如“with”块中的字典列表，以便在块外使用。
关于python - Whoosh - 访问 search_page 结果项会引发 ReaderClosed 异常，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/19477319/