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Guided.pm
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package C4::Reports::Guided;
# Copyright 2007 Liblime Ltd
#
# This file is part of Koha.
#
# Koha is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation; either version 2 of the License, or (at your option) any later
# version.
#
# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
# Suite 330, Boston, MA 02111-1307 USA
use strict;
# use warnings; # FIXME: this module needs a lot of repair to run clean under warnings
use CGI;
use Carp;
use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
use Koha;
use C4::Context;
use C4::Dates qw/format_date/;
use C4::Output;
use C4::Dates;
use XML::Simple;
use XML::Dumper;
use C4::Debug;
# use Smart::Comments;
# use Data::Dumper;
BEGIN {
# set the version for version checking
$VERSION = 0.12;
require Exporter;
@ISA = qw(Exporter);
@EXPORT = qw(
get_report_types get_report_areas get_columns build_query get_criteria
save_report get_saved_reports execute_query get_saved_report create_compound run_compound
get_column_type get_distinct_values save_dictionary get_from_dictionary
delete_definition delete_report format_results get_sql
select_2_select_count_value update_sql
);
}
our %table_areas;
$table_areas{'1'} =
[ 'borrowers', 'statistics','items', 'biblioitems' ]; # circulation
$table_areas{'2'} = [ 'items', 'biblioitems', 'biblio' ]; # catalogue
$table_areas{'3'} = [ 'borrowers' ]; # patrons
$table_areas{'4'} = ['aqorders', 'biblio', 'items']; # acquisitions
$table_areas{'5'} = [ 'borrowers', 'accountlines' ]; # accounts
our %keys;
$keys{'1'} = [
'statistics.borrowernumber=borrowers.borrowernumber',
'items.itemnumber = statistics.itemnumber',
'biblioitems.biblioitemnumber = items.biblioitemnumber'
];
$keys{'2'} = [
'items.biblioitemnumber=biblioitems.biblioitemnumber',
'biblioitems.biblionumber=biblio.biblionumber'
];
$keys{'3'} = [ ];
$keys{'4'} = [
'aqorders.biblionumber=biblio.biblionumber',
'biblio.biblionumber=items.biblionumber'
];
$keys{'5'} = ['borrowers.borrowernumber=accountlines.borrowernumber'];
# have to do someting here to know if its dropdown, free text, date etc
our %criteria;
$criteria{'1'} = [
'statistics.type', 'borrowers.categorycode',
'statistics.branch',
'biblioitems.publicationyear|date',
'items.dateaccessioned|date'
];
$criteria{'2'} =
[ 'items.holdingbranch', 'items.homebranch' ,'items.itemlost', 'items.location', 'items.ccode'];
$criteria{'3'} = ['borrowers.branchcode'];
$criteria{'4'} = ['aqorders.datereceived|date'];
$criteria{'5'} = ['borrowers.branchcode'];
if (C4::Context->preference('item-level_itypes')) {
unshift @{ $criteria{'1'} }, 'items.itype';
unshift @{ $criteria{'2'} }, 'items.itype';
} else {
unshift @{ $criteria{'1'} }, 'biblioitems.itemtype';
unshift @{ $criteria{'2'} }, 'biblioitems.itemtype';
}
=head1 NAME
C4::Reports::Guided - Module for generating guided reports
=head1 SYNOPSIS
use C4::Reports::Guided;
=head1 DESCRIPTION
=head1 METHODS
=over 2
=cut
=item get_report_types()
This will return a list of all the available report types
=cut
sub get_report_types {
my $dbh = C4::Context->dbh();
# FIXME these should be in the database perhaps
my @reports = ( 'Tabular', 'Summary', 'Matrix' );
my @reports2;
for ( my $i = 0 ; $i < 3 ; $i++ ) {
my %hashrep;
$hashrep{id} = $i + 1;
$hashrep{name} = $reports[$i];
push @reports2, \%hashrep;
}
return ( \@reports2 );
}
=item get_report_areas()
This will return a list of all the available report areas
=cut
sub get_report_areas {
my $dbh = C4::Context->dbh();
# FIXME these should be in the database
my @reports = ( 'Circulation (checkouts and reserves)', 'Catalog (records and items)', 'Patrons', 'Acquisitions', 'Accounts (fines)');
my @reports2;
for ( my $i = 0 ; $i < 5 ; $i++ ) {
my %hashrep;
$hashrep{id} = $i + 1;
$hashrep{name} = $reports[$i];
push @reports2, \%hashrep;
}
return ( \@reports2 );
}
=item get_all_tables()
This will return a list of all tables in the database
=cut
sub get_all_tables {
my $dbh = C4::Context->dbh();
my $query = "SHOW TABLES";
my $sth = $dbh->prepare($query);
$sth->execute();
my @tables;
while ( my $data = $sth->fetchrow_arrayref() ) {
push @tables, $data->[0];
}
$sth->finish();
return ( \@tables );
}
=item get_columns($area)
This will return a list of all columns for a report area
=cut
sub get_columns {
# this calls the internal fucntion _get_columns
my ($area,$cgi) = @_;
my $tables = $table_areas{$area};
my @allcolumns;
my $first = 1;
foreach my $table (@$tables) {
my @columns = _get_columns($table,$cgi, $first);
$first = 0;
push @allcolumns, @columns;
}
return ( \@allcolumns );
}
sub _get_columns {
my ($tablename,$cgi, $first) = @_;
my $dbh = C4::Context->dbh();
my $sth = $dbh->prepare("show columns from $tablename");
$sth->execute();
my @columns;
my $column_defs = _get_column_defs($cgi);
while ( my $data = $sth->fetchrow_arrayref() ) {
my %temphash;
$temphash{'name'} = "$tablename.$data->[0]";
$temphash{'description'} = $column_defs->{$temphash{'name'}} || $temphash{'name'};
push @columns, \%temphash;
}
@columns = sort { $a->{'description'} cmp $b->{'description'} } @columns;
unshift @columns, { table => $tablename, __first__ => $first };
return (@columns);
}
=item build_query($columns,$criteria,$orderby,$area)
This will build the sql needed to return the results asked for,
$columns is expected to be of the format tablename.columnname.
This is what get_columns returns.
=cut
sub build_query {
my ( $columns, $criteria, $orderby, $area, $totals, $definition ) = @_;
### $orderby
my $keys = $keys{$area};
my $tables = $table_areas{$area};
my $sql =
_build_query( $tables, $columns, $criteria, $keys, $orderby, $totals, $definition );
return ($sql);
}
sub _build_query {
my ( $tables, $columns, $criteria, $keys, $orderby, $totals, $definition) = @_;
### $orderby
# $keys is an array of joining constraints
my $dbh = C4::Context->dbh();
my $joinedtables = join( ',', @$tables );
my $joinedcolumns = join( ',', @$columns );
my $joinedkeys = join( ' AND ', @$keys );
my $query =
"SELECT $totals $joinedcolumns FROM $tables->[0] ";
for (my $i=1;$i<@$tables;$i++){
$query .= "LEFT JOIN $tables->[$i] on ($keys->[$i-1]) ";
}
if ($criteria) {
$criteria =~ s/AND/WHERE/;
$query .= " $criteria";
}
if ($definition){
my @definitions = split(',',$definition);
my $deftext;
foreach my $def (@definitions){
my $defin=get_from_dictionary('',$def);
$deftext .=" ".$defin->[0]->{'saved_sql'};
}
if ($query =~ /WHERE/i){
$query .= $deftext;
}
else {
$deftext =~ s/AND/WHERE/;
$query .= $deftext;
}
}
if ($totals) {
my $groupby;
my @totcolumns = split( ',', $totals );
foreach my $total (@totcolumns) {
if ( $total =~ /\((.*)\)/ ) {
if ( $groupby eq '' ) {
$groupby = " GROUP BY $1";
}
else {
$groupby .= ",$1";
}
}
}
$query .= $groupby;
}
if ($orderby) {
$query .= $orderby;
}
return ($query);
}
=item get_criteria($area,$cgi);
Returns an arraref to hashrefs suitable for using in a tmpl_loop. With the criteria and available values.
=cut
sub get_criteria {
my ($area,$cgi) = @_;
my $dbh = C4::Context->replica_dbh();
my $crit = $criteria{$area};
my $column_defs = _get_column_defs($cgi);
my @criteria_array;
foreach my $localcrit (@$crit) {
my ( $value, $type ) = split( /\|/, $localcrit );
my ( $table, $column ) = split( /\./, $value );
if ( $type eq 'date' ) {
my %temp;
$temp{'name'} = $value;
$temp{'date'} = 1;
$temp{'description'} = $column_defs->{$value};
push @criteria_array, \%temp;
}
else {
my $query =
"SELECT distinct($column) as availablevalues FROM $table";
my $sth = $dbh->prepare($query);
$sth->execute();
my $values = $sth->fetchall_arrayref({});
my %temp;
$temp{'name'} = $value;
$temp{'description'} = $column_defs->{$value};
$temp{'values'} = [ sort { $a->{'availablevalues'} cmp $b->{'availablevalues'} } @$values ];
push @criteria_array, \%temp;
}
}
return ( \@criteria_array );
}
=item execute_query
=over
($results, $total, $error) = execute_query($sql, $offset, $limit)
=back
When passed C<$sql>, this function returns an array ref containing a result set
suitably formatted for display in html or for output as a flat file when passed in
C<$format> and C<$id>. It also returns the C<$total> records available for the
supplied query. If passed any query other than a SELECT, or if there is a db error,
C<$errors> an array ref is returned containing the error after this manner:
C<$error->{'sqlerr'}> contains the offending SQL keyword.
C<$error->{'queryerr'}> contains the native db engine error returned for the query.
Valid values for C<$format> are 'text,' 'tab,' 'csv,' or 'url. C<$sql>, C<$type>,
C<$offset>, and C<$limit> are required parameters. If a valid C<$format> is passed
in, C<$offset> and C<$limit> are ignored for obvious reasons. A LIMIT specified by
the user in a user-supplied SQL query WILL apply in any case.
=cut
# returns $sql, $offset, $limit
# $sql returned will be transformed to:
# ~ remove any LIMIT clause
# ~ repace SELECT clause w/ SELECT count(*)
sub select_2_select_count_value ($) {
my $sql = shift or return;
my $countsql = select_2_select_count($sql);
$debug and warn "original query: $sql\ncount query: $countsql\n";
my $sth1 = C4::Context->replica_dbh->prepare($countsql);
$sth1->execute();
my $total = $sth1->fetchrow();
$debug and warn "total records for this query: $total\n";
return $total;
}
sub select_2_select_count ($) {
# Modify the query passed in to create a count query... (I think this covers all cases -crn)
my ($sql) = strip_limit(shift) or return;
$sql =~ s/\bSELECT\W+(?:\w+\W+){1,}?FROM\b|\bSELECT\W\*\WFROM\b/SELECT count(*) FROM /ig;
return $sql;
}
sub strip_limit ($) {
my $sql = shift or return;
($sql =~ /\bLIMIT\b/i) or return ($sql, 0, undef);
$sql =~ s/\bLIMIT\b\s*(\d+)(\s*\,\s*(\d+))?\s*/ /ig;
return ($sql, (defined $2 ? $1 : 0), (defined $3 ? $3 : $1)); # offset can default to 0, LIMIT cannot!
}
sub execute_query ($;$$$) {
my ( $sql, $offset, $limit, $no_count ) = @_;
# check parameters
unless ($sql) {
carp "execute_query() called without SQL argument";
return;
}
$debug and print STDERR "execute_query($sql, $offset, $limit)\n";
if ($sql =~ /;?\W?(UPDATE|DELETE|DROP|INSERT|SHOW|CREATE)\W/i) {
return (undef, { sqlerr => $1} );
} elsif ($sql !~ /^\s*SELECT\b\s*/i) {
return (undef, { queryerr => 'Missing SELECT'} );
}
my $sth;
unless($no_count){
$offset = 0 unless $offset;
$limit = 9999 unless $limit;
my ($useroffset, $userlimit);
# Grab offset/limit from user supplied LIMIT and drop the LIMIT so we can control pagination
($sql, $useroffset, $userlimit) = strip_limit($sql);
$debug and warn sprintf "User has supplied (OFFSET,) LIMIT = %s, %s",
$useroffset,
(defined($userlimit ) ? $userlimit : 'UNDEF');
$offset += $useroffset;
if (defined($userlimit)) {
if ($offset + $limit > $userlimit ) {
$limit = $userlimit - $offset;
}
}
$sql .= " LIMIT ?, ?";
$sth = C4::Context->replica_dbh->prepare($sql);
$sth->execute($offset, $limit);
}
else{
$sth = C4::Context->replica_dbh->prepare($sql);
$sth->execute();
}
return ( $sth );
# my @xmlarray = ... ;
# my $url = "/cgi-bin/koha/reports/guided_reports.pl?phase=retrieve%20results&id=$id";
# my $xml = XML::Dumper->new()->pl2xml( \@xmlarray );
# store_results($id,$xml);
}
=item save_report($sql,$name,$type,$notes)
Given some sql and a name this will saved it so that it can resued
=cut
sub save_report {
my ( $borrowernumber, $sql, $name, $type, $notes ) = @_;
my $dbh = C4::Context->dbh();
$sql =~ s/(\s*\;\s*)$//; # removes trailing whitespace and /;/
my $query =
"INSERT INTO saved_sql (borrowernumber,date_created,last_modified,savedsql,report_name,type,notes) VALUES (?,now(),now(),?,?,?,?)";
my $sth = $dbh->prepare($query);
$sth->execute( $borrowernumber, $sql, $name, $type, $notes );
}
sub update_sql {
my $id = shift || croak "No Id given";
my $sql = shift;
my $reportname = shift;
my $notes = shift;
my $dbh = C4::Context->dbh();
$sql =~ s/(\s*\;\s*)$//; # removes trailing whitespace and /;/
my $query = "UPDATE saved_sql SET savedsql = ?, last_modified = now(), report_name = ?, notes = ? WHERE id = ? ";
my $sth = $dbh->prepare($query);
$sth->execute( $sql, $reportname, $notes, $id );
$sth->finish();
}
sub store_results {
my ($id,$xml)=@_;
my $dbh = C4::Context->dbh();
my $query = "SELECT * FROM saved_reports WHERE report_id=?";
my $sth = $dbh->prepare($query);
$sth->execute($id);
if (my $data=$sth->fetchrow_hashref()){
my $query2 = "UPDATE saved_reports SET report=?,date_run=now() WHERE report_id=?";
my $sth2 = $dbh->prepare($query2);
$sth2->execute($xml,$id);
}
else {
my $query2 = "INSERT INTO saved_reports (report_id,report,date_run) VALUES (?,?,now())";
my $sth2 = $dbh->prepare($query2);
$sth2->execute($id,$xml);
}
}
sub format_results {
my ($id) = @_;
my $dbh = C4::Context->dbh();
my $query = "SELECT * FROM saved_reports WHERE report_id = ?";
my $sth = $dbh->prepare($query);
$sth->execute($id);
my $data = $sth->fetchrow_hashref();
my $dump = new XML::Dumper;
my $perl = $dump->xml2pl( $data->{'report'} );
foreach my $row (@$perl) {
my $htmlrow="<tr>";
foreach my $key (keys %$row){
$htmlrow .= "<td>$row->{$key}</td>";
}
$htmlrow .= "</tr>";
$row->{'row'} = $htmlrow;
}
$sth->finish;
$query = "SELECT * FROM saved_sql WHERE id = ?";
$sth = $dbh->prepare($query);
$sth->execute($id);
$data = $sth->fetchrow_hashref();
return ($perl,$data->{'report_name'},$data->{'notes'});
}
sub delete_report {
my ( $id ) = @_;
my $dbh = C4::Context->dbh();
my $query = "DELETE FROM saved_sql WHERE id = ?";
my $sth = $dbh->prepare($query);
$sth->execute($id);
}
sub get_saved_reports {
my $dbh = C4::Context->dbh();
my $query = "SELECT *,saved_sql.id AS id FROM saved_sql
LEFT JOIN saved_reports ON saved_reports.report_id = saved_sql.id
ORDER by date_created";
my $sth = $dbh->prepare($query);
$sth->execute();
my $result = $sth->fetchall_arrayref({});
foreach (@$result){
$_->{date_created} = format_date($_->{date_created});
my $member = C4::Members::GetMember($_->{borrowernumber});
$_->{borrowerfirstname} = $member->{firstname};
$_->{borrowersurname} = $member->{surname};
}
return $result;
}
sub get_saved_report {
my ($id) = @_;
my $dbh = C4::Context->dbh();
my $query = " SELECT * FROM saved_sql WHERE id = ?";
my $sth = $dbh->prepare($query);
$sth->execute($id);
my $data = $sth->fetchrow_hashref();
return ( $data->{'savedsql'}, $data->{'type'}, $data->{'report_name'}, $data->{'notes'} );
}
=item create_compound($masterID,$subreportID)
This will take 2 reports and create a compound report using both of them
=cut
sub create_compound {
my ($masterID,$subreportID) = @_;
my $dbh = C4::Context->dbh();
# get the reports
my ($mastersql,$mastertype) = get_saved_report($masterID);
my ($subsql,$subtype) = get_saved_report($subreportID);
# now we have to do some checking to see how these two will fit together
# or if they will
my ($mastertables,$subtables);
if ($mastersql =~ / from (.*) where /i){
$mastertables = $1;
}
if ($subsql =~ / from (.*) where /i){
$subtables = $1;
}
return ($mastertables,$subtables);
}
=item get_column_type($column)
This takes a column name of the format table.column and will return what type it is
(free text, set values, date)
=cut
sub get_column_type {
my ($tablecolumn) = @_;
my ($table,$column) = split(/\./,$tablecolumn);
my $dbh = C4::Context->dbh();
my $catalog;
my $schema;
# mysql doesnt support a column selection, set column to %
my $tempcolumn='%';
my $sth = $dbh->column_info( $catalog, $schema, $table, $tempcolumn ) || die $dbh->errstr;
while (my $info = $sth->fetchrow_hashref()){
if ($info->{'COLUMN_NAME'} eq $column){
#column we want
if ($info->{'TYPE_NAME'} eq 'CHAR' || $info->{'TYPE_NAME'} eq 'VARCHAR'){
$info->{'TYPE_NAME'} = 'distinct';
}
return $info->{'TYPE_NAME'};
}
}
}
=item get_distinct_values($column)
Given a column name, return an arrary ref of hashrefs suitable for use as a tmpl_loop
with the distinct values of the column
=cut
sub get_distinct_values {
my ($tablecolumn) = @_;
my ($table,$column) = split(/\./,$tablecolumn);
my $dbh = C4::Context->replica_dbh();
my $query =
"SELECT distinct($column) as availablevalues FROM $table";
my $sth = $dbh->prepare($query);
$sth->execute();
return $sth->fetchall_arrayref({});
}
sub save_dictionary {
my ($name,$description,$sql,$area) = @_;
my $dbh = C4::Context->dbh();
my $query = "INSERT INTO reports_dictionary (name,description,saved_sql,area,date_created,date_modified)
VALUES (?,?,?,?,now(),now())";
my $sth = $dbh->prepare($query);
$sth->execute($name,$description,$sql,$area) || return 0;
return 1;
}
sub get_from_dictionary {
my ($area,$id) = @_;
my $dbh = C4::Context->dbh();
my $query = "SELECT * FROM reports_dictionary";
if ($area){
$query.= " WHERE area = ?";
}
elsif ($id){
$query.= " WHERE id = ?"
}
my $sth = $dbh->prepare($query);
if ($id){
$sth->execute($id);
}
elsif ($area) {
$sth->execute($area);
}
else {
$sth->execute();
}
my @loop;
my @reports = ( 'Circulation', 'Catalog', 'Patrons', 'Acquisitions', 'Accounts');
while (my $data = $sth->fetchrow_hashref()){
$data->{'areaname'}=$reports[$data->{'area'}-1];
push @loop,$data;
}
return (\@loop);
}
sub delete_definition {
my ($id) = @_ or return;
my $dbh = C4::Context->dbh();
my $query = "DELETE FROM reports_dictionary WHERE id = ?";
my $sth = $dbh->prepare($query);
$sth->execute($id);
}
sub get_sql {
my ($id) = @_ or return;
my $dbh = C4::Context->dbh();
my $query = "SELECT * FROM saved_sql WHERE id = ?";
my $sth = $dbh->prepare($query);
$sth->execute($id);
my $data=$sth->fetchrow_hashref();
return $data->{'savedsql'};
}
sub _get_column_defs {
my ($cgi) = @_;
my %columns;
my $columns_def_file = "columns.def";
my $htdocs = C4::Context->config('intrahtdocs');
my $section='intranet';
my ($theme, $lang) = themelanguage($htdocs, $columns_def_file, $section,$cgi);
my $full_path_to_columns_def_file="$htdocs/$theme/$lang/$columns_def_file";
open (COLUMNS,$full_path_to_columns_def_file);
while (my $input = <COLUMNS>){
my @row =split(/\t/,$input);
$columns{$row[0]}=$row[1];
}
close COLUMNS;
return \%columns;
}
1;
__END__
=back
=head1 AUTHOR
Chris Cormack <crc@liblime.com>
=cut