xapian 通过python创建索引数据库的复杂一些的范例
除了包含索引字符串外,还为索引添加了两个值
#!/usr/bin/env python # # Index each paragraph of a text file as a Xapian document. # Include some values that will be of use later. # # 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 # USA import sys import xapian import string import time if len(sys.argv) != 2: print >> sys.stderr, "Usage: %s PATH_TO_DATABASE" % sys.argv[0] sys.exit(1) try: # Open the database for update, creating a new database if necessary. database = xapian.WritableDatabase(sys.argv[1], xapian.DB_CREATE_OR_OPEN) indexer = xapian.TermGenerator() stemmer = xapian.Stem("english") indexer.set_stemmer(stemmer) para = '' try: for line in sys.stdin: line = string.strip(line) if line == '': if para != '': # We've reached the end of a paragraph, so index it. doc = xapian.Document() doc.set_data(para) indexer.set_document(doc) tcount = indexer.get_termpos() indexer.index_text(para) tcount = indexer.get_termpos() - tcount # Include two values: the length of the indexed paragraph # (in characters), and the number of terms generated. doc.add_value(0, xapian.sortable_serialise(len(para))) doc.add_value(1, xapian.sortable_serialise(tcount)) # Add the document to the database. database.add_document(doc) para = '' else: if para != '': para += ' ' para += line except StopIteration: pass except Exception, e: print >> sys.stderr, "Exception: %s" % str(e) import traceback traceback.print_exc() sys.exit(1)