MultiFacet problem

[Vitalii Mazur]

I try to use sorting.MultiFacet in my project for cascading groupping. My code is:

>>> ix = open_dir("./finbroker/whoosh", indexname="deposits")

>>> searcher = ix.searcher()

>>> from whoosh.qparser import QueryParser

>>> from finbroker.whoosh.deposits import deposits_schema

>>> parser = QueryParser(u"rid:{0 to]", schema=deposits_schema)

>>> parser = QueryParser(u"rid", schema=deposits_schema)

>>> query = parser.parse(u"rid:{0 to]")

>>> facet = sorting.MultiFacet("days", "month")

>>> results = searcher.search(query, groupedby=facet)

Traceback (most recent call last):

  File "<pyshell#16>", line 1, in <module>

    results = searcher.search(query, groupedby=facet)

  File "build/bdist.linux-i686/egg/whoosh/searching.py", line 762, in search

    self.search_with_collector(q, c)

  File "build/bdist.linux-i686/egg/whoosh/searching.py", line 803, in search_with_collector

    collector.set_subsearcher(subsearcher, offset)

  File "build/bdist.linux-i686/egg/whoosh/collectors.py", line 675, in set_subsearcher

    categorizer.set_searcher(child.subsearcher, child.offset)

  File "build/bdist.linux-i686/egg/whoosh/sorting.py", line 764, in set_searcher

    catter.set_searcher(segment_searcher, docoffset)

  File "build/bdist.linux-i686/egg/whoosh/sorting.py", line 235, in set_searcher

    self.fieldcache = r.fieldcache(self.fieldname)

  File "build/bdist.linux-i686/egg/whoosh/filedb/filereading.py", line 360, in fieldcache

    fc = FieldCache.from_field(self, fieldname)

  File "build/bdist.linux-i686/egg/whoosh/filedb/fieldcache.py", line 164, in from_field

    field = ixreader.schema[fieldname]

  File "build/bdist.linux-i686/egg/whoosh/fields.py", line 990, in __getitem__

    raise KeyError("No field named %r" % (name,))

KeyError: "No field named 'd'"

What I'm doing wrong?

Thank you.

[Thomas Waldmann]

Not sure, but the docs of MultiFacet seem a bit erroneous / inconsistent - but I guess the first parameter has to be a LIST of facets.

As you are giving a simple string "days" there, it'll take that as list of "d", "a", "y", "s".

Just an idea. If you find out the correct way, it would be nice if you could proofread and submit a patch to fix / clarify the docs.