xapian通过python实现的简单排序代码，xapianpython,James Aylett

xapian通过python实现的简单排序代码，xapianpython,James Aylett

James Aylett: Xapian examples: simplesorter#!/usr/bin/env python## Simple command-line sorter example; takes as an argument a# comma-separated list of values to configure a MultiValueSorter to# use. The list may start or end with 'R' for relevance to be included# in the sort.## Copyright (C) 2003,2008 James Aylett# Copyright (C) 2004,2007 Olly Betts## This program is free software; you can redistribute it and/or# modify it under the terms of the GNU General Public License as# published by the Free Software Foundation; either version 2 of the# License, or (at your option) any later version.## This program is distributed in the hope that it will be useful,# but WITHOUT ANY WARRANTY; without even the implied warranty of# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the# GNU General Public License for more details.## You should have received a copy of the GNU General Public License# along with this program; if not, write to the Free Software# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301# USAimport sysimport xapian# We require at least three command line arguments.if len(sys.argv) < 4:    print >> sys.stderr, "Usage: %s PATH_TO_DATABASE SORTSPEC QUERY" % sys.argv[0]    print >> sys.stderr, "SORTSPEC = key[,key,...], where key is a value number or 'R' for relevance"    sys.exit(1)# Open the database for searching.database = xapian.Database(sys.argv[1])# Start an enquire session.enquire = xapian.Enquire(database)# Create a MultiValueSorter and configure it suitablysort = 'VALUES' # or 'VALUES_THEN_RELEVANCE', 'RELEVANCE_THEN_VALUES'nkeys = 0sorter = xapian.MultiValueSorter()for key in sys.argv[2].split(','):    if key=='':        continue    if key=='R':        if nkeys==0:            sort = 'RELEVANCE_THEN_VALUES'        else:            sort = 'VALUES_THEN_RELEVANCE'    else:        if sort=='VALUES_THEN_RELEVANCE':            print >> sys.stderr, "Relevance can only be the first or last sort key."            sys.exit(1)        forward = True        if key[0]=='-':            forward = False            key = key[1:]        sorter.add(int(key), forward)        nkeys += 1if nkeys==0:    enquire.set_sort_by_relevance()elif sort=='VALUES':    enquire.set_sort_by_key(sorter)elif sort=='VALUES_THEN_RELEVANCE':    enquire.set_sort_by_key_then_relevance(sorter)elif sort=='RELEVANCE_THEN_VALUES':    enquire.set_sort_by_relevance_then_key(sorter)# Combine the rest of the command line arguments with spaces between# them, so that simple queries don't have to be quoted at the shell# level.query_string = " ".join(sys.argv[3:])# Parse the query string to produce a Xapian::Query object.qp = xapian.QueryParser()stemmer = xapian.Stem("english")qp.set_stemmer(stemmer)qp.set_database(database)qp.set_stemming_strategy(xapian.QueryParser.STEM_SOME)query = qp.parse_query(query_string)print "Parsed query is: %s" % str(query)# Find the top 10 results for the query.enquire.set_query(query)matches = enquire.get_mset(0, 10)# Display the results.print "%i results found." % matches.get_matches_estimated()print "Results 1-%i:" % matches.size()for m in matches:    print "%i: %i%% docid=%i [%s]" % (m.rank + 1, m.percent, m.docid, m.document.get_data())Fun with Django storage backendsRunning statsd on HerokuIntroducing Accessibility AdventAccessibility Advent: normal accessibility advice still appliesAccessibility Advent: scrolling issues reduxAccessibility Advent: only I get to put stuff in text inputsAccessibility Advent: enhance long drop downsAccessibility Advent: beware focus events, reduxAccessibility Advent: please avoid being clever, particularly with form elementsArchivesAri PaparoJane EspensonJohn FinnemoreTim BrayMarianne LevyRichard Boulton (on Xapian)Simon WillisonNiqui MerretDarien Graham-SmithRebecca CottrellMore linksHomepageLatest blog entriesAbout meContact meThings I've done with computersTwitter statusTalk To Rex for film/writing/satireKittens with Jetpacks for consultingLinked In profileFlickr photosMade Up Words for theatreDelicious bookmarksThings I Love (in case you want to buy me things :-)Google+Other blog entries feedOpen Rights Group (founding member)Copyright James Aylett 2012 Accessibility information Valid markup? Valid CSS?