Open-ILS/src/sql/Pg/upgrade/YYYY.functions.url_verify.sql

   1 BEGIN;
   2
   3 CREATE OR REPLACE FUNCTION url_verify.parse_url (url_in TEXT) RETURNS url_verify.url AS $$
   4
   5 use Rose::URI;
   6
   7 my $url_in = shift;
   8 my $url = Rose::URI->new($url_in);
   9
  10 my %parts = map { $_ => $url->$_ } qw/scheme username password host port path query fragment/;
  11
  12 $parts{full_url} = $url_in;
  13 ($parts{domain} = $parts{host}) =~ s/^[^.]+\.//;
  14 ($parts{tld} = $parts{domain}) =~ s/(?:[^.]+\.)+//;
  15 ($parts{page} = $parts{path}) =~ s#(?:[^/]*/)+##;
  16
  17 return \%parts;
  18
  19 $$ LANGUAGE PLPERLU;
  20
  21 CREATE OR REPLACE FUNCTION url_verify.ingest_url () RETURNS TRIGGER AS $$
  22 DECLARE
  23     tmp_row url_verify.url%ROWTYPE;
  24 BEGIN
  25     SELECT * INTO tmp_row FROM url_verify.parse_url(NEW.full_url);
  26
  27     NEW.scheme          := tmp_row.scheme;
  28     NEW.username        := tmp_row.username;
  29     NEW.password        := tmp_row.password;
  30     NEW.host            := tmp_row.host;
  31     NEW.domain          := tmp_row.domain;
  32     NEW.tld             := tmp_row.tld;
  33     NEW.port            := tmp_row.port;
  34     NEW.path            := tmp_row.path;
  35     NEW.page            := tmp_row.page;
  36     NEW.query           := tmp_row.query;
  37     NEW.fragment        := tmp_row.fragment;
  38
  39     RETURN NEW;
  40 END;
  41 $$ LANGUAGE PLPGSQL;
  42
  43 CREATE TRIGGER ingest_url_tgr
  44     BEFORE INSERT ON url_verify.url
  45     FOR EACH ROW EXECUTE PROCEDURE url_verify.ingest_url();
  46
  47 CREATE OR REPLACE FUNCTION url_verify.extract_urls ( session_id INT, item_id INT ) RETURNS INT AS $$
  48 DECLARE
  49     last_seen_tag TEXT;
  50     current_tag TEXT;
  51     current_sf TEXT;
  52     current_url TEXT;
  53     current_ord INT;
  54     current_url_pos INT;
  55     current_selector url_verify.url_selector%ROWTYPE;
  56 BEGIN
  57     current_ord := 1;
  58
  59     FOR current_selector IN SELECT * FROM url_verify.url_selector s WHERE s.session = session_id LOOP
  60         current_url_pos := 1;
  61         LOOP
  62             SELECT  (XPATH(current_selector.xpath || '/text()', b.marc::XML))[current_url_pos]::TEXT INTO current_url
  63               FROM  biblio.record_entry b
  64                     JOIN container.biblio_record_entry_bucket_item c ON (c.target_biblio_record_entry = b.id)
  65               WHERE c.id = item_id;
  66
  67             EXIT WHEN current_url IS NULL;
  68
  69             SELECT  (XPATH(current_selector.xpath || '/../@tag', b.marc::XML))[current_url_pos]::TEXT INTO current_tag
  70               FROM  biblio.record_entry b
  71                     JOIN container.biblio_record_entry_bucket_item c ON (c.target_biblio_record_entry = b.id)
  72               WHERE c.id = item_id;
  73
  74             IF current_tag IS NULL THEN
  75                 current_tag := last_seen_tag;
  76             ELSE
  77                 last_seen_tag := current_tag;
  78             END IF;
  79
  80             SELECT  (XPATH(current_selector.xpath || '/@code', b.marc::XML))[current_url_pos]::TEXT INTO current_sf
  81               FROM  biblio.record_entry b
  82                     JOIN container.biblio_record_entry_bucket_item c ON (c.target_biblio_record_entry = b.id)
  83               WHERE c.id = item_id;
  84
  85             INSERT INTO url_verify.url (session, item, url_selector, tag, subfield, ord, full_url)
  86               VALUES ( session_id, item_id, current_selector.id, current_tag, current_sf, current_ord, current_url);
  87
  88             current_url_pos := current_url_pos + 1;
  89             current_ord := current_ord + 1;
  90         END LOOP;
  91     END LOOP;
  92
  93     RETURN current_ord - 1;
  94 END;
  95 $$ LANGUAGE PLPGSQL;
  96
  97 COMMIT;
  98