was a test for inverted indexes. Useless we have choosen zebra
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package C4::SearchMarcTest;
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# Copyright 2000-2002 Katipo Communications
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#
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# This file is part of Koha.
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#
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# Koha is free software; you can redistribute it and/or modify it under the
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# terms of the GNU General Public License as published by the Free Software
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# Foundation; either version 2 of the License, or (at your option) any later
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# version.
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#
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# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along with
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# Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
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# Suite 330, Boston, MA 02111-1307 USA
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use strict;
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require Exporter;
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use DBI;
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use C4::Context;
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use C4::Biblio;
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use C4::Date;
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use Date::Manip;
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use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
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# set the version for version checking
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$VERSION = 0.02;
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=head1 NAME
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C4::Search - Functions for searching the Koha MARC catalog
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=head1 FUNCTIONS
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This module provides the searching facilities for the Koha MARC catalog
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A COPY of official SearchMarc, with some tests for inverted index table
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works only with 1 MARC tag/subfield
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=cut
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@ISA = qw(Exporter);
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@EXPORT = qw(&catalogsearch &findseealso &findsuggestion &getMARCnotes &getMARCsubjects);
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=head1 findsuggestion($dbh,$values);
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=head2 $dbh is a link to the DB handler.
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use C4::Context;
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my $dbh =C4::Context->dbh;
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=head2 $values is a word
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Searches words with the same soundex, ordered by frequency of use.
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Useful to suggest other searches to the users.
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=cut
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sub findsuggestion {
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my ($dbh,$values) = @_;
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my $sth = $dbh->prepare("SELECT count( * ) AS total, word FROM marc_word WHERE sndx_word = soundex( ? ) AND word <> ? GROUP BY word ORDER BY total DESC");
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my @results;
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for(my $i = 0 ; $i <= $#{$values} ; $i++) {
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if (length(@$values[$i]) >=5) {
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$sth->execute(@$values[$i],@$values[$i]);
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my $resfound = 1;
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my @resline;
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while ((my ($count,$word) = $sth->fetchrow) and $resfound <=10) {
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push @results, "@$values[$i]|$word|$count";
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# $results{@$values[$i]} = \@resline;
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$resfound++;
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}
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}
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}
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return \@results;
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}
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=head1 findseealso($dbh,$fields);
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=head2 $dbh is a link to the DB handler.
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use C4::Context;
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my $dbh =C4::Context->dbh;
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=head2 $fields is a reference to the fields array
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This function modify the @$fields array and add related fields to search on.
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=cut
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sub findseealso {
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my ($dbh, $fields) = @_;
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my $tagslib = MARCgettagslib ($dbh,1);
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for (my $i=0;$i<=$#{$fields};$i++) {
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my ($tag) =substr(@$fields[$i],1,3);
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my ($subfield) =substr(@$fields[$i],4,1);
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@$fields[$i].=','.$tagslib->{$tag}->{$subfield}->{seealso} if ($tagslib->{$tag}->{$subfield}->{seealso});
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}
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}
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=head1 my ($count, @results) = catalogsearch($dbh, $tags, $and_or, $excluding, $operator, $value, $offset,$length,$orderby);
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=head2 $dbh is a link to the DB handler.
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use C4::Context;
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my $dbh =C4::Context->dbh;
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$tags,$and_or, $excluding, $operator, $value are references to array
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=head2 $tags
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contains the list of tags+subfields (for example : $@tags[0] = '200a')
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A field can be a list of fields : '200f','700a','700b','701a','701b'
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Example
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=head2 $and_or
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contains a list of strings containing and or or. The 1st value is useless.
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=head2 $excluding
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contains 0 or 1. If 1, then the request is negated.
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=head2 $operator
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contains contains,=,start,>,>=,<,<= the = and start work on the complete subfield. The contains operator works on every word in the subfield.
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examples :
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contains home, search home anywhere.
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= home, search a string being home.
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=head2 $value
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contains the value to search
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If it contains a * or a %, then the search is partial.
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=head2 $offset and $length
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returns $length results, beginning at $offset
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=head2 $orderby
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define the field used to order the request. Any field in the biblio/biblioitem tables can be used. DESC is possible too
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(for example title, title DESC,...)
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=head2 RETURNS
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returns an array containing hashes. The hash contains all biblio & biblioitems fields and a reference to an item hash. The "item hash contains one line for each callnumber & the number of items related to the callnumber.
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=cut
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=head2 my $marcnotesarray = &getMARCnotes($dbh,$bibid,$marcflavour);
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Returns a reference to an array containing all the notes stored in the MARC database for the given bibid.
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$marcflavour ("MARC21" or "UNIMARC") determines which tags are used for retrieving subjects.
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=head2 my $marcsubjctsarray = &getMARCsubjects($dbh,$bibid,$marcflavour);
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Returns a reference to an array containing all the subjects stored in the MARC database for the given bibid.
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$marcflavour ("MARC21" or "UNIMARC") determines which tags are used for retrieving subjects.
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=cut
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sub catalogsearch {
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my ($dbh, $tags, $and_or, $excluding, $operator, $value, $offset,$length,$orderby,$desc_or_asc) = @_;
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# "Normal" statements
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my @normal_tags = ();
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my @normal_and_or = ();
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my @normal_operator = ();
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my @normal_value = ();
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# Extracts the NOT statements from the list of statements
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my @not_tags = ();
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my @not_and_or = ();
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my @not_operator = ();
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my @not_value = ();
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my $any_not = 0;
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$orderby = "biblio.title" unless $orderby;
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$desc_or_asc = "ASC" unless $desc_or_asc;
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# the item.notforloan contains an integer. Every value <>0 means "book unavailable for loan".
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# but each library can have it's own table of meaning for each value. Get them
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# 1st search if there is a list of authorised values connected to items.notforloan
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my $sth = $dbh->prepare('select authorised_value from marc_subfield_structure where kohafield="items.notforloan"');
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$sth->execute;
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my %notforloanstatus;
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my ($authorised_valuecode) = $sth->fetchrow;
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if ($authorised_valuecode) {
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$sth = $dbh->prepare("select authorised_value,lib from authorised_values where category=?");
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$sth->execute($authorised_valuecode);
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while (my ($authorised_value,$lib) = $sth->fetchrow) {
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$notforloanstatus{$authorised_value} = $lib?$lib:$authorised_value;
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}
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}
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#
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#
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# marc_T_word PROOF OF CONCEPT BEGINNING
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#
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# fixme : only do a search on "contains every word"
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# misses :
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# - begins or is equal to
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# - excluding
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# - or
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# the global array result.
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my @result;
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for(my $i = 0 ; $i <= $#{$value} ; $i++)
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{
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# replace * by %
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@$value[$i] =~ s/\*/%/g;
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# remove % at the beginning
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@$value[$i] =~ s/^%//g;
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@$value[$i] =~ s/(\.|\?|\:|\!|\'|,|\-|\"|\(|\)|\[|\]|\{|\}|\/)/ /g if @$operator[$i] eq "contains";
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foreach my $word (split(/ /, @$value[$i])) # if operator is contains, splits the words in separate requests
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{
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# the array from this word
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my @thiswordresults;
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my $Tquery = $dbh->prepare("select tagsubfield,usedin from marc_Tword where tagsubfield in (@$tags[$i]) and word like ?");
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$Tquery->execute($word);
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warn "EXECUTING select tagsubfield,usedin from marc_Tword where tagsubfield in (@$tags[$i]) and word like $word";
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# get the list of biblionumber - title
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while (my ($tagsubfield,$usedin) = $Tquery->fetchrow) {
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# warn "$word with ".@$tags[$i]." used in $usedin";
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# split it in an array
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my @lines = split /,/,$usedin;
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# and copy it to an hash.
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foreach my $line (@lines) {
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# warn "PUSHING $line" if $line; # the if $line avoid pushing the 1st entry, that is empty (usedin begins by a ,)
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push @thiswordresults, $line if $line;
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}
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}
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# now, as it's a AND, merge %results & %thiswordresults in 1 hash
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@result = @thiswordresults if $#result<0; #for the 1st loop, fill the global array
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my %intersect;
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my %union;
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my $x; # temp variable
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foreach $x (@result, @thiswordresults) {
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$union{$x}++ && $intersect{$x}++;
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}
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@result = keys %intersect;
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}
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}
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# we have biblionumber array.
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# now, sort it
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my @result = sort @result;
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#Now, loads title and author from [offset] to [offset]+[length]
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my $counter = $offset;
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# HINT : biblionumber as bn is important. The hash is fills biblionumber with items.biblionumber.
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# so if you dont' has an item, you get a not nice empty value.
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$sth = $dbh->prepare("SELECT biblio.biblionumber as bn,biblioitems.*,biblio.*, marc_biblio.bibid,itemtypes.notforloan,itemtypes.description
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FROM biblio, marc_biblio
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LEFT JOIN biblioitems on biblio.biblionumber = biblioitems.biblionumber
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LEFT JOIN itemtypes on itemtypes.itemtype=biblioitems.itemtype
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WHERE biblio.biblionumber = marc_biblio.biblionumber AND biblio.biblionumber = ?");
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#
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#
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# marc_Tword Proof of concept
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#
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#
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my $subtitle;
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my $sth_subtitle = $dbh->prepare("SELECT subtitle FROM bibliosubtitle WHERE biblionumber=?"); # Added BY JF for Subtitles
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my @finalresult = ();
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my @CNresults=();
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my $totalitems=0;
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my $oldline;
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my ($oldbibid, $oldauthor, $oldtitle);
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my $sth_itemCN = $dbh->prepare("select items.* from items where biblionumber=? and (itemlost = 0 or itemlost is NULL)");
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my $sth_issue = $dbh->prepare("select date_due,returndate from issues where itemnumber=?");
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# parse all biblios between start & end.
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warn "RESULT SIZE : ".$#result;
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while (($counter <= $#result) && ($counter <= ($offset + $length))) {
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# search & parse all items & note itemcallnumber
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# 1st, get the biblionumber
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$result[$counter] =~ /(.*)-(.*)/;
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$sth->execute($2);
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warn "EXECUTING SELECT biblio.biblionumber as bn,biblioitems.*,biblio.*, marc_biblio.bibid,itemtypes.notforloan,itemtypes.description FROM biblio, marc_biblio LEFT JOIN biblioitems on biblio.biblionumber = biblioitems.biblionumber LEFT JOIN itemtypes on itemtypes.itemtype=biblioitems.itemtype WHERE biblio.biblionumber = marc_biblio.biblionumber AND biblio.biblionumber = $2";
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my $continue=1;
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my $line = $sth->fetchrow_hashref;
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my $biblionumber=$line->{bn};
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# Return subtitles first ADDED BY JF
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$sth_subtitle->execute($biblionumber);
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warn "EXECUTING SELECT subtitle FROM bibliosubtitle WHERE biblionumber=$biblionumber";
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my $subtitle_here.= $sth_subtitle->fetchrow." ";
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chop $subtitle_here;
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$subtitle = $subtitle_here;
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# /ADDED BY JF
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# $continue=0 unless $line->{bn};
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# my $lastitemnumber;
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$sth_itemCN->execute($biblionumber);
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warn "EXECUTING itemCN select items.* from items where biblionumber=$biblionumber and (itemlost = 0 or itemlost is NULL)";
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my @CNresults = ();
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my $notforloan=1; # to see if there is at least 1 item that can be issued
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while (my $item = $sth_itemCN->fetchrow_hashref) {
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# parse the result, putting holdingbranch & itemcallnumber in separate array
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# then all other fields in the main array
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# search if item is on loan
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my $date_due;
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$sth_issue->execute($item->{itemnumber});
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warn "EXECUTING ISSUES select date_due,returndate from issues where itemnumber=".$item->{itemnumber};
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while (my $loan = $sth_issue->fetchrow_hashref) {
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if ($loan->{date_due} and !$loan->{returndate}) {
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$date_due = $loan->{date_due};
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}
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}
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# store this item
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my %lineCN;
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$lineCN{holdingbranch} = $item->{holdingbranch};
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$lineCN{itemcallnumber} = $item->{itemcallnumber};
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$lineCN{location} = $item->{location};
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$lineCN{date_due} = format_date($date_due);
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$lineCN{notforloan} = $notforloanstatus{$line->{notforloan}} if ($line->{notforloan}); # setting not forloan if itemtype is not for loan
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$lineCN{notforloan} = $notforloanstatus{$item->{notforloan}} if ($item->{notforloan}); # setting not forloan it this item is not for loan
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$notforloan=0 unless ($item->{notforloan} or $item->{wthdrawn} or $item->{itemlost});
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push @CNresults,\%lineCN;
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$totalitems++;
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}
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# save the biblio in the final array, with item and item issue status
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my %newline;
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%newline = %$line;
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$newline{totitem} = $totalitems;
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# if $totalitems == 0, check if it's being ordered.
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if ($totalitems == 0) {
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my $sth = $dbh->prepare("select count(*) from aqorders where biblionumber=? and datecancellationprinted is NULL");
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$sth->execute($biblionumber);
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warn "EXECUTING select count(*) from aqorders where biblionumber=$biblionumber and datecancellationprinted is NULL";
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my ($ordered) = $sth->fetchrow;
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$newline{onorder} = 1 if $ordered;
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}
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$newline{biblionumber} = $biblionumber;
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$newline{norequests} = 0;
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$newline{norequests} = 1 if ($line->{notforloan}); # itemtype not issuable
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$newline{norequests} = 1 if (!$line->{notforloan} && $notforloan); # itemtype issuable but all items not issuable for instance
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$newline{subtitle} = $subtitle; # put the subtitle in ADDED BY JF
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my @CNresults2= @CNresults;
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$newline{CN} = \@CNresults2;
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$newline{'even'} = 1 if $#finalresult % 2 == 0;
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$newline{'odd'} = 1 if $#finalresult % 2 == 1;
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$newline{'timestamp'} = format_date($newline{timestamp});
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@CNresults = ();
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push @finalresult, \%newline;
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$totalitems=0;
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$counter++;
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}
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my $nbresults = $#result+1;
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return (\@finalresult, $nbresults);
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}
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# Creates the SQL Request
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sub create_request {
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my ($dbh,$tags, $and_or, $operator, $value) = @_;
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my $sql_tables; # will contain marc_subfield_table as m1,...
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my $sql_where1; # will contain the "true" where
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my $sql_where2 = "("; # will contain m1.bibid=m2.bibid
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my $nb_active=0; # will contain the number of "active" entries. an entry is active if a value is provided.
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my $nb_table=1; # will contain the number of table. ++ on each entry EXCEPT when an OR is provided.
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my $maxloop=8; # the maximum number of words to avoid a too complex search.
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$maxloop = @$value if @$value<$maxloop;
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for(my $i=0; $i<=$maxloop;$i++) {
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if (@$value[$i]) {
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$nb_active++;
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if ($nb_active==1) {
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if (@$operator[$i] eq "start") {
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$sql_tables .= "marc_subfield_table as m$nb_table,";
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$sql_where1 .= "(m1.subfieldvalue like ".$dbh->quote("@$value[$i]%");
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if (@$tags[$i]) {
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$sql_where1 .=" and concat(m1.tag,m1.subfieldcode) in (@$tags[$i])";
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}
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$sql_where1.=")";
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} elsif (@$operator[$i] eq "contains") {
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$sql_tables .= "marc_word as m$nb_table,";
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$sql_where1 .= "(m1.word like ".$dbh->quote("@$value[$i]");
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if (@$tags[$i]) {
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$sql_where1 .=" and m1.tagsubfield in (@$tags[$i])";
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}
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$sql_where1.=")";
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} else {
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$sql_tables .= "marc_subfield_table as m$nb_table,";
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$sql_where1 .= "(m1.subfieldvalue @$operator[$i] ".$dbh->quote("@$value[$i]");
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if (@$tags[$i]) {
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$sql_where1 .=" and concat(m1.tag,m1.subfieldcode) in (@$tags[$i])";
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}
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$sql_where1.=")";
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}
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} else {
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if (@$operator[$i] eq "start") {
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$nb_table++;
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$sql_tables .= "marc_subfield_table as m$nb_table,";
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$sql_where1 .= "@$and_or[$i] (m$nb_table.subfieldvalue like ".$dbh->quote("@$value[$i]%");
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if (@$tags[$i]) {
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$sql_where1 .=" and concat(m$nb_table.tag,m$nb_table.subfieldcode) in (@$tags[$i])";
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}
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$sql_where1.=")";
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$sql_where2 .= "m1.bibid=m$nb_table.bibid and ";
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} elsif (@$operator[$i] eq "contains") {
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if (@$and_or[$i] eq 'and') {
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$nb_table++;
|
||||
$sql_tables .= "marc_word as m$nb_table,";
|
||||
$sql_where1 .= "@$and_or[$i] (m$nb_table.word like ".$dbh->quote("@$value[$i]");
|
||||
if (@$tags[$i]) {
|
||||
$sql_where1 .=" and m$nb_table.tagsubfield in(@$tags[$i])";
|
||||
}
|
||||
$sql_where1.=")";
|
||||
$sql_where2 .= "m1.bibid=m$nb_table.bibid and ";
|
||||
} else {
|
||||
$sql_where1 .= "@$and_or[$i] (m$nb_table.word like ".$dbh->quote("@$value[$i]");
|
||||
if (@$tags[$i]) {
|
||||
$sql_where1 .=" and m$nb_table.tagsubfield in (@$tags[$i])";
|
||||
}
|
||||
$sql_where1.=")";
|
||||
$sql_where2 .= "m1.bibid=m$nb_table.bibid and ";
|
||||
}
|
||||
} else {
|
||||
$nb_table++;
|
||||
$sql_tables .= "marc_subfield_table as m$nb_table,";
|
||||
$sql_where1 .= "@$and_or[$i] (m$nb_table.subfieldvalue @$operator[$i] ".$dbh->quote(@$value[$i]);
|
||||
if (@$tags[$i]) {
|
||||
$sql_where1 .=" and concat(m$nb_table.tag,m$nb_table.subfieldcode) in (@$tags[$i])";
|
||||
}
|
||||
$sql_where2 .= "m1.bibid=m$nb_table.bibid and ";
|
||||
$sql_where1.=")";
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if($sql_where2 ne "(") # some datas added to sql_where2, processing
|
||||
{
|
||||
$sql_where2 = substr($sql_where2, 0, (length($sql_where2)-5)); # deletes the trailing ' and '
|
||||
$sql_where2 .= ")";
|
||||
}
|
||||
else # no sql_where2 statement, deleting '('
|
||||
{
|
||||
$sql_where2 = "";
|
||||
}
|
||||
chop $sql_tables; # deletes the trailing ','
|
||||
return ($sql_tables, $sql_where1, $sql_where2);
|
||||
}
|
||||
|
||||
sub getMARCnotes {
|
||||
my ($dbh, $bibid, $marcflavour) = @_;
|
||||
my ($mintag, $maxtag);
|
||||
if ($marcflavour eq "MARC21") {
|
||||
$mintag = "500";
|
||||
$maxtag = "599";
|
||||
} else { # assume unimarc if not marc21
|
||||
$mintag = "300";
|
||||
$maxtag = "399";
|
||||
}
|
||||
|
||||
my $sth=$dbh->prepare("SELECT subfieldvalue,tag FROM marc_subfield_table WHERE bibid=? AND tag BETWEEN ? AND ? ORDER BY tagorder");
|
||||
|
||||
$sth->execute($bibid,$mintag,$maxtag);
|
||||
|
||||
my @marcnotes;
|
||||
my $note = "";
|
||||
my $tag = "";
|
||||
my $marcnote;
|
||||
|
||||
while (my $data=$sth->fetchrow_arrayref) {
|
||||
my $value=$data->[0];
|
||||
my $thistag=$data->[1];
|
||||
if ($value=~/\.$/) {
|
||||
$value=$value . " ";
|
||||
}
|
||||
if ($thistag ne $tag && $note ne "") {
|
||||
$marcnote = {marcnote => $note,};
|
||||
push @marcnotes, $marcnote;
|
||||
$note=$value;
|
||||
$tag=$thistag;
|
||||
}
|
||||
if ($note ne $value) {
|
||||
$note = $note." ".$value;
|
||||
}
|
||||
}
|
||||
|
||||
if ($note) {
|
||||
$marcnote = {marcnote => $note};
|
||||
push @marcnotes, $marcnote; #load last tag into array
|
||||
}
|
||||
|
||||
$sth->finish;
|
||||
$dbh->disconnect;
|
||||
|
||||
my $marcnotesarray=\@marcnotes;
|
||||
return $marcnotesarray;
|
||||
} # end getMARCnotes
|
||||
|
||||
|
||||
sub getMARCsubjects {
|
||||
my ($dbh, $bibid, $marcflavour) = @_;
|
||||
my ($mintag, $maxtag);
|
||||
if ($marcflavour eq "MARC21") {
|
||||
$mintag = "600";
|
||||
$maxtag = "699";
|
||||
} else { # assume unimarc if not marc21
|
||||
$mintag = "600";
|
||||
$maxtag = "619";
|
||||
}
|
||||
my $sth=$dbh->prepare("SELECT subfieldvalue,subfieldcode FROM marc_subfield_table WHERE bibid=? AND tag BETWEEN ? AND ? ORDER BY tagorder");
|
||||
|
||||
$sth->execute($bibid,$mintag,$maxtag);
|
||||
|
||||
my @marcsubjcts;
|
||||
my $subjct = "";
|
||||
my $subfield = "";
|
||||
my $marcsubjct;
|
||||
|
||||
while (my $data=$sth->fetchrow_arrayref) {
|
||||
my $value = $data->[0];
|
||||
my $subfield = $data->[1];
|
||||
if ($subfield eq "a" && $value ne $subjct) {
|
||||
$marcsubjct = {MARCSUBJCT => $value,};
|
||||
push @marcsubjcts, $marcsubjct;
|
||||
$subjct = $value;
|
||||
}
|
||||
}
|
||||
|
||||
$sth->finish;
|
||||
$dbh->disconnect;
|
||||
|
||||
my $marcsubjctsarray=\@marcsubjcts;
|
||||
return $marcsubjctsarray;
|
||||
} #end getMARCsubjects
|
||||
|
||||
END { } # module clean-up code here (global destructor)
|
||||
|
||||
1;
|
||||
__END__
|
||||
|
||||
=back
|
||||
|
||||
=head1 AUTHOR
|
||||
|
||||
Koha Developement team <info@koha.org>
|
||||
|
||||
=cut
|
||||
Loading…
Reference in a new issue