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272 lines
8.1 KiB
272 lines
8.1 KiB
package NGCP::Panel::Utils::Datatables;
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use strict;
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use warnings;
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use Sipwise::Base;
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use List::Util qw/first/;
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use Scalar::Util qw/blessed/;
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use DateTime::Format::Strptime;
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sub process {
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my ($c, $rs, $cols, $row_func) = @_;
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my $use_rs_cb = ('CODE' eq (ref $rs));
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my $aaData = [];
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my $displayRecords = 0;
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# check if we need to join more tables
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# TODO: can we nest it deeper than once level?
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set_columns($c, $cols);
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unless ($use_rs_cb) {
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for my $col(@{ $cols }) {
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my @parts = split /\./, $col->{name};
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if($col->{literal_sql}) {
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$rs = $rs->search_rs(undef, {
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'+select' => [ \[$col->{literal_sql}] ],
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'+as' => [ $col->{accessor} ],
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});
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} elsif( @parts > 1 ) {
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my $join = $parts[$#parts-1];
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foreach my $table(reverse @parts[0..($#parts-2)]){
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$join = { $table => $join };
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}
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$rs = $rs->search_rs(undef, {
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join => $join,
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'+select' => [ $parts[($#parts-1)].'.'.$parts[$#parts] ],
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'+as' => [ $col->{accessor} ],
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});
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}
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}
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}
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#all joins already implemented, and filters aren't applied
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my $totalRecords = $use_rs_cb ? 0 : $rs->count;
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# generic searching
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my @searchColumns = ();
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my $searchString = $c->request->params->{sSearch} // "";
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foreach my $col(@{ $cols }) {
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# avoid amigious column names if we have the same column in different joined tables
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my $name = _get_joined_column_name_($col->{name});
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my $stmt = { $name => { like => '%'.$searchString.'%' } };
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$stmt = \[$col->{literal_sql} . " LIKE ?", [ {} => '%'.$searchString.'%'] ]
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if $col->{literal_sql};
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push @searchColumns, $stmt if $col->{search};
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}
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if($searchString && ! $use_rs_cb) {
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$rs = $rs->search([@searchColumns]);
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}
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# data-range searching
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my $from_date_in = $c->request->params->{sSearch_0} // "";
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my $to_date_in = $c->request->params->{sSearch_1} // "";
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my($from_date,$to_date);
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my $parser = DateTime::Format::Strptime->new(
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#pattern => '%Y-%m-%d %H:%M',
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pattern => '%Y-%m-%d',
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);
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if($from_date_in) {
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$from_date = $parser->parse_datetime($from_date_in);
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}
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if($to_date_in) {
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$to_date = $parser->parse_datetime($to_date_in);
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}
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@searchColumns = ();
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foreach my $col(@{ $cols }) {
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# avoid amigious column names if we have the same column in different joined tables
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my $name = _get_joined_column_name_($col->{name});
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if($col->{search_from_epoch} && $from_date) {
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$rs = $rs->search({
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$name => { '>=' => $col->{search_use_datetime} ? $from_date_in : $from_date->epoch },
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});
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}
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if($col->{search_to_epoch} && $to_date) {
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$rs = $rs->search({
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$name => { '<=' => $col->{search_use_datetime} ? $to_date_in : $to_date->epoch },
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});
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}
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}
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$displayRecords = $use_rs_cb ? 0 : $rs->count;
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# show specific row on top (e.g. if we come back from a newly created entry)
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my $topId = $c->request->params->{iIdOnTop};
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if(defined $topId) {
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if(defined(my $row = $rs->find($topId))) {
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push @{ $aaData }, _prune_row($cols, $row->get_inflated_columns);
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if (defined $row_func) {
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$aaData->[-1]->put($row_func->($row));
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}
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$rs = $rs->search({ 'me.id' => { '!=', $topId} });
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}
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}
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# sorting
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my $sortColumn = $c->request->params->{iSortCol_0};
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my $sortDirection = $c->request->params->{sSortDir_0} || 'asc';
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if(defined $sortColumn && defined $sortDirection && ! $use_rs_cb) {
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if('desc' eq lc $sortDirection) {
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$sortDirection = 'desc';
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} else {
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$sortDirection = 'asc';
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}
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# first, get the fields we're actually showing
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my @displayedFields = ();
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for my $col(@{ $cols }) {
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next unless $col->{title};
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my $name = _get_joined_column_name_($col->{name});
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push @displayedFields, $name;
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}
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# ... and pick the name defined by the dt index
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my $sortName = $displayedFields[$sortColumn];
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$rs = $rs->search(undef, {
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order_by => {
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"-$sortDirection" => $sortName,
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}
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});
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}
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# pagination
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my $pageStart = $c->request->params->{iDisplayStart};
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my $pageSize = $c->request->params->{iDisplayLength};
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if ($use_rs_cb) {
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($rs, $totalRecords, $displayRecords) = $rs->(
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offset => $pageStart || 0,
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rows => $pageSize || 5,
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searchstring => $searchString,
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);
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} else {
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if(defined $pageStart && defined $pageSize && $pageSize > 0) {
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$rs = $rs->search(undef, {
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offset => $pageStart,
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rows => $pageSize,
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});
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}
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}
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for my $row ($rs->all) {
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push @{ $aaData }, _prune_row($cols, $row->get_inflated_columns);
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if (defined $row_func) {
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$aaData->[-1]->put($row_func->($row));
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}
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}
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$c->stash(
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aaData => $aaData,
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iTotalRecords => $totalRecords,
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iTotalDisplayRecords => $displayRecords,
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sEcho => int($c->request->params->{sEcho} // 1),
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);
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}
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sub set_columns {
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my ($c, $cols) = @_;
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for my $c(@{ $cols }) {
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next if defined $c->{accessor};
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$c->{accessor} = $c->{name};
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$c->{accessor} =~ s/\./_/g;
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}
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return $cols;
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}
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sub _prune_row {
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my ($columns, %row) = @_;
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while (my ($k,$v) = each %row) {
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unless (first { $_->{accessor} eq $k && $_->{title} } @{ $columns }) {
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delete $row{$k};
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next;
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}
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if(blessed($v) && $v->isa('DateTime')) {
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$row{$k} = $v->ymd('-') . ' ' . $v->hms(':');
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$row{$k} .= '.'.$v->millisecond if $v->millisecond > 0.0;
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}
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}
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return { %row };
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}
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sub _get_joined_column_name {
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my $cname = shift;
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my $name;
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if($cname !~ /\./) {
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if ($cname !~ /^v_(max|min|count)_/) {
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$name = 'me.'.$cname;
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} else { # virtual agrregated columns (count, min, max)
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$name = $cname;
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}
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} else {
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my @parts = split /\./, $cname;
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if(@parts == 2) {
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$name = $cname;
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} elsif(@parts == 3) {
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$name = $parts[1].'.'.$parts[2];
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} elsif(@parts == 4) {
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#I can suggest that in this case parts[1]may be schema name. If it isn't, then it will be incorrect sql for example for order (and in other cases too). But I didn't see schema names usage in tt (at least accounting or billing). So, switched to new sub.
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$name = $parts[1].'.'.$parts[2].'.'.$parts[3];
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} else {
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# TODO throw an error for now as we only support one and two level
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$name = join('.',@parts[1 .. $#parts]);
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}
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}
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return $name;
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}
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sub _get_joined_column_name_{
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my $cname = shift;
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my $name;
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if($cname !~ /\./) {
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if ($cname !~ /^v_(max|min|count)_/) {
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$name = 'me.'.$cname;
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} else { # virtual agrregated columns (count, min, max)
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$name = $cname;
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}
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} else {
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my @parts = split /\./, $cname;
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if(@parts == 2){
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$name = $cname;
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}else{
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$name = join('.',@parts[($#parts-1) .. $#parts]);
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}
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}
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return $name;
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}
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1;
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__END__
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=encoding UTF-8
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=head1 NAME
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NGCP::Panel::Utils::Datatables
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=head1 DESCRIPTION
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=head1 METHODS
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=head2 C<process>
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Query DB on datatables ajax request.
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Format of the resultset callback (if used):
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Arguments as hash
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ARGUMENTS: offset, rows, searchstring
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RETURNS: ($rs, $totalcount, $displaycount)
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=head1 AUTHOR
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Gerhard Jungwirth C<< <gjungwirth@sipwise.com> >>
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=head1 LICENSE
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This library is free software. You can redistribute it and/or modify
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it under the same terms as Perl itself.
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# vim: set tabstop=4 expandtab:
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