Re: Solr client on VMS

On 12/6/2024 7:49 PM, Arne Vajhøj wrote:

I have been looking a bit at Solr recently. For those that don't
know Solr, then it is a text search engine - or more accurate it
is a web frontend for the Lucene text search engine. Both
Solr and Lucene are Apache projects (open source).
 Solr is basically exposing a web API, so anything that can do
HTTP POST can use Solr. But clients encapsulating the HTTP
stuff does exist for many languages. On VMS then both JVM languages
and Python should be able to use a standard client.

Python:
$ type load.py
import solr
client = solr.SolrConnection('http://arnepc5:8888/solr/chessopening')
client.delete_query('*:*')
client.add(id=1, names='Spanish defense, Ruy Lopez', moves='1. e4, e5, 2. Nf3, Nc6, 3. Bb5,')
client.add(id=2, names='French defense', moves='1. e4, e6, 2. d4, d5,')
client.add(id=3, names='Sicilian defense', moves='1. e4, c5,')
client.add(id=4, names='Queens gambit', moves='1. d4, d5, 2. c4,')
client.add(id=5, names='Dutch defense', moves='1. d4, f5,')
client.add(id=6, names='Reti opening', moves='1. Nf3, d5, 2. c4,')
client.commit()
$ python load.py
<add><doc><field name="id">1</field><field name="names">Spanish defense, Ruy Lopez</field><field name="moves">1. e4, e5, 2. Nf3, Nc6
, 3. Bb5,</field></doc></add>
<add><doc><field name="id">2</field><field name="names">French defense</field><field name="moves">1. e4, e6, 2. d4, d5,</field></doc
 ></add>
<add><doc><field name="id">3</field><field name="names">Sicilian defense</field><field name="moves">1. e4, c5,</field></doc></add>
<add><doc><field name="id">4</field><field name="names">Queens gambit</field><field name="moves">1. d4, d5, 2. c4,</field></doc></ad
d>
<add><doc><field name="id">5</field><field name="names">Dutch defense</field><field name="moves">1. d4, f5,</field></doc></add>
<add><doc><field name="id">6</field><field name="names">Reti opening</field><field name="moves">1. Nf3, d5, 2. c4,</field></doc></ad
d>
$ type search.py
import solr
def dump(client, searchterm):
     print('search for : %s' % (searchterm))
     res = client.query(searchterm, df='alltext').results
     for doc in res:
         print('  %s - %s' % (doc['names'], doc['moves']))
client = solr.SolrConnection('http://arnepc5:8888/solr/chessopening')
# all
dump(client, '*:*')
# one
dump(client, 'names:defense')
dump(client, 'moves:d4')
# dual
dump(client, 'alltext:defense')
dump(client, 'alltext:d4')
dump(client, 'defense') # default field
dump(client, 'd4') # default field
# boolean
dump(client, 'names:defense moves:d4') # implicit or
dump(client, 'names:defense AND moves:d4') # and
dump(client, 'names:defense NOT moves:d4') # not
dump(client, 'defense d4') # default field + implicit or
dump(client, 'defense AND d4') # default field + and
dump(client, 'defense NOT d4') # default field + not
# wildcard
dump(client, 'names:def*')
dump(client, 'moves:N*')
$ python search.py
search for : *:*
   Spanish defense, Ruy Lopez - 1. e4, e5, 2. Nf3, Nc6, 3. Bb5,
   French defense - 1. e4, e6, 2. d4, d5,
   Sicilian defense - 1. e4, c5,
   Queens gambit - 1. d4, d5, 2. c4,
   Dutch defense - 1. d4, f5,
   Reti opening - 1. Nf3, d5, 2. c4,
search for : names:defense
   French defense - 1. e4, e6, 2. d4, d5,
   Sicilian defense - 1. e4, c5,
   Dutch defense - 1. d4, f5,
   Spanish defense, Ruy Lopez - 1. e4, e5, 2. Nf3, Nc6, 3. Bb5,
search for : moves:d4
   Dutch defense - 1. d4, f5,
   Queens gambit - 1. d4, d5, 2. c4,
   French defense - 1. e4, e6, 2. d4, d5,
search for : alltext:defense
   Sicilian defense - 1. e4, c5,
   Dutch defense - 1. d4, f5,
   French defense - 1. e4, e6, 2. d4, d5,
   Spanish defense, Ruy Lopez - 1. e4, e5, 2. Nf3, Nc6, 3. Bb5,
search for : alltext:d4
   Dutch defense - 1. d4, f5,
   Queens gambit - 1. d4, d5, 2. c4,
   French defense - 1. e4, e6, 2. d4, d5,
search for : defense
   Sicilian defense - 1. e4, c5,
   Dutch defense - 1. d4, f5,
   French defense - 1. e4, e6, 2. d4, d5,
   Spanish defense, Ruy Lopez - 1. e4, e5, 2. Nf3, Nc6, 3. Bb5,
search for : d4
   Dutch defense - 1. d4, f5,
   Queens gambit - 1. d4, d5, 2. c4,
   French defense - 1. e4, e6, 2. d4, d5,
search for : names:defense moves:d4
   Dutch defense - 1. d4, f5,
   French defense - 1. e4, e6, 2. d4, d5,
   Queens gambit - 1. d4, d5, 2. c4,
   Sicilian defense - 1. e4, c5,
   Spanish defense, Ruy Lopez - 1. e4, e5, 2. Nf3, Nc6, 3. Bb5,
search for : names:defense AND moves:d4
   Dutch defense - 1. d4, f5,
   French defense - 1. e4, e6, 2. d4, d5,
search for : names:defense NOT moves:d4
   Sicilian defense - 1. e4, c5,
   Spanish defense, Ruy Lopez - 1. e4, e5, 2. Nf3, Nc6, 3. Bb5,
search for : defense d4
   Dutch defense - 1. d4, f5,
   French defense - 1. e4, e6, 2. d4, d5,
   Queens gambit - 1. d4, d5, 2. c4,
   Sicilian defense - 1. e4, c5,
   Spanish defense, Ruy Lopez - 1. e4, e5, 2. Nf3, Nc6, 3. Bb5,
search for : defense AND d4
   Dutch defense - 1. d4, f5,
   French defense - 1. e4, e6, 2. d4, d5,
search for : defense NOT d4
   Sicilian defense - 1. e4, c5,
   Spanish defense, Ruy Lopez - 1. e4, e5, 2. Nf3, Nc6, 3. Bb5,
search for : names:def*
   Spanish defense, Ruy Lopez - 1. e4, e5, 2. Nf3, Nc6, 3. Bb5,
   French defense - 1. e4, e6, 2. d4, d5,
   Sicilian defense - 1. e4, c5,
   Dutch defense - 1. d4, f5,
search for : moves:N*
   Spanish defense, Ruy Lopez - 1. e4, e5, 2. Nf3, Nc6, 3. Bb5,
   Reti opening - 1. Nf3, d5, 2. c4,
Arne