148 lines
4.3 KiB
Perl
148 lines
4.3 KiB
Perl
package C4::Members::Statistics;
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# Copyright 2012 BibLibre
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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
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# under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# Koha is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# 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
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# along with Koha; if not, see <https://www.gnu.org/licenses>.
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=head1 NAME
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C4::Members::Statistics - Get statistics for patron checkouts
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=cut
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use Modern::Perl;
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use base 'Exporter';
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BEGIN {
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our @EXPORT_OK = qw(
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get_fields
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GetTotalIssuesTodayByBorrower
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GetTotalIssuesReturnedTodayByBorrower
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GetPrecedentStateByBorrower
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);
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}
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use C4::Context;
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=head2 get_fields
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Get fields form syspref 'StatisticsFields'
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Returns list of valid fields, defaults to 'location|itype|ccode'
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if syspref is empty or does not contain valid fields
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=cut
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sub get_fields {
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my $syspref = C4::Context->preference('StatisticsFields');
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my $ret;
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if ($syspref) {
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my @ret;
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my @spfields = split( '\|', $syspref );
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my $schema = Koha::Database->new()->schema();
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my @columns = $schema->source('Item')->columns;
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foreach my $fn (@spfields) {
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push( @ret, $fn ) if ( grep { $_ eq $fn } @columns );
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}
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$ret = join( '|', @ret );
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}
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return $ret || 'location|itype|ccode';
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}
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=head2 construct_query
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Build a sql query from a subquery
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Adds statistics fields to the select and the group by clause
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=cut
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sub construct_query {
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my $count = shift;
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my $subquery = shift;
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my $fields = get_fields();
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my @select_fields = split '\|', $fields;
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my $query = "SELECT COUNT(*) as count_$count,";
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$query .= join ',', @select_fields;
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$query .= " " . $subquery;
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$fields =~ s/\|/,/g;
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$query .= " GROUP BY $fields;";
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return $query;
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}
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=head2 GetTotalIssuesTodayByBorrower
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Return total issues for a borrower at this current day
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=cut
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sub GetTotalIssuesTodayByBorrower {
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my ($borrowernumber) = @_;
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my $dbh = C4::Context->dbh;
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my $query = construct_query "total_issues_today",
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"FROM (
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SELECT it.* FROM issues i, items it WHERE i.itemnumber = it.itemnumber AND i.borrowernumber = ? AND DATE(i.issuedate) = CAST(now() AS date)
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UNION
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SELECT it.* FROM old_issues oi, items it WHERE oi.itemnumber = it.itemnumber AND oi.borrowernumber = ? AND DATE(oi.issuedate) = CAST(now() AS date)
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) tmp"; # alias is required by MySQL
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my $sth = $dbh->prepare($query);
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$sth->execute( $borrowernumber, $borrowernumber );
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return $sth->fetchall_arrayref( {} );
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}
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=head2 GetTotalIssuesReturnedTodayByBorrower
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Return total issues returned by a borrower at this current day
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=cut
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sub GetTotalIssuesReturnedTodayByBorrower {
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my ($borrowernumber) = @_;
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my $dbh = C4::Context->dbh;
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my $query = construct_query "total_issues_returned_today",
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"FROM old_issues i, items it WHERE i.itemnumber = it.itemnumber AND i.borrowernumber = ? AND DATE(i.returndate) = CAST(now() AS date) ";
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my $sth = $dbh->prepare($query);
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$sth->execute($borrowernumber);
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return $sth->fetchall_arrayref( {} );
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}
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=head2 GetPrecedentStateByBorrower
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Return the precedent state (before today) for a borrower of his checkins and checkouts
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=cut
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sub GetPrecedentStateByBorrower {
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my ($borrowernumber) = @_;
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my $dbh = C4::Context->dbh;
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my $query = construct_query "precedent_state",
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"FROM (
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SELECT it.* FROM issues i, items it WHERE i.borrowernumber = ? AND i.itemnumber = it.itemnumber AND DATE(i.issuedate) < CAST(now() AS date)
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UNION
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SELECT it.* FROM old_issues oi, items it WHERE oi.borrowernumber = ? AND oi.itemnumber = it.itemnumber AND DATE(oi.issuedate) < CAST(now() AS date) AND DATE(oi.returndate) = CAST(now() AS date)
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) tmp"; # alias is required by MySQL
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my $sth = $dbh->prepare($query);
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$sth->execute( $borrowernumber, $borrowernumber );
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return $sth->fetchall_arrayref( {} );
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}
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1;
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