[python3] convert search_synonyms example

code/python3/search_synonyms.py

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+#!/usr/bin/env python
+
+import json
+import logging
+import sys
+import xapian
+import support
+
+### Start of example code.
+def search(dbpath, querystring, offset=0, pagesize=10):
+    # offset - defines starting point within result set
+    # pagesize - defines number of records to retrieve
+
+    # Open the database we're going to search.
+    db = xapian.WritableDatabase(dbpath)
+
+    # Start of adding synonyms
+    db.add_synonym("time", "calendar")
+    # End of adding synonyms
+
+    # Set up a QueryParser with a stemmer and suitable prefixes
+    queryparser = xapian.QueryParser()
+    queryparser.set_stemmer(xapian.Stem("en"))
+    queryparser.set_stemming_strategy(queryparser.STEM_SOME)
+    # Start of prefix configuration.
+    queryparser.add_prefix("title", "S")
+    queryparser.add_prefix("description", "XD")
+    # End of prefix configuration.
+
+    # Start of set database
+    queryparser.set_database(db)
+    # End of set database
+
+    # And parse the query
+    query = queryparser.parse_query(querystring, queryparser.FLAG_SYNONYM)
+
+    # Use an Enquire object on the database to run the query
+    enquire = xapian.Enquire(db)
+    enquire.set_query(query)
+
+    # And print out something about each match
+    matches = []
+    for match in enquire.get_mset(offset, pagesize):
+        fields = json.loads(match.document.get_data().decode('utf8'))
+        print(u"%(rank)i: #%(docid)3.3i %(title)s" % {
+            'rank': match.rank + 1,
+            'docid': match.docid,
+            'title': fields.get('TITLE', u''),
+            })
+        matches.append(match.docid)
+
+    # Finally, make sure we log the query and displayed results
+    support.log_matches(querystring, offset, pagesize, matches)
+### End of example code.
+
+if len(sys.argv) < 3:
+    print("Usage: %s DBPATH QUERYTERM..." % sys.argv[0])
+    sys.exit(1)
+
+logging.basicConfig(level=logging.INFO)
+search(dbpath = sys.argv[1], querystring = " ".join(sys.argv[2:]))

code/python3/search_synonyms.py.db_time.out

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+1: #065 Electric time piece with hands but without dial (no pendulum
+2: #058 The "Empire" clock, to show the time at various longitudes,
+3: #041 Frequency and time measuring instrument type TSA3436 by Venn
+4: #056 Single sandglass in 4 pillared wood mount, running time 15 1
+5: #043 Loughborough-Hayes automatic timing apparatus. Used by the R
+6: #011 "Timetrunk" by Hines and Co., Glasgow (a sandglass for timin
+7: #016 Copy of the gearing of the Byzantine sundial-calendar (1983-
+8: #045 Master clock of the "Silent Electric" type made by the Magne
+9: #018 Solar/Sidereal verge watch with epicyclic maintaining power
+INFO:xapian.search:'time'[0:10] = 65 58 41 56 43 11 16 45 18

code/python3/search_synonyms.py.out

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+1: #016 Copy of the gearing of the Byzantine sundial-calendar (1983-
+2: #072 German Perpetual Calendar in gilt metal
+3: #065 Electric time piece with hands but without dial (no pendulum
+4: #068 Ornate brass Perpetual Calendar
+5: #058 The "Empire" clock, to show the time at various longitudes,
+6: #041 Frequency and time measuring instrument type TSA3436 by Venn
+7: #056 Single sandglass in 4 pillared wood mount, running time 15 1
+8: #043 Loughborough-Hayes automatic timing apparatus. Used by the R
+9: #026 Sundial and compass with perpetual calendar and lunar circles
+10: #036 Universal 'Tri-Compax' chronographic wrist watch
+INFO:xapian.search:'~time'[0:10] = 16 72 65 68 58 41 56 43 26 36