use strict;
use warnings;
use overload
- '0+' => 'count',
+ '0+' => \&count,
'bool' => sub { 1; },
fallback => 1;
use Data::Page;
package MyApp::Schema::Artist;
use base qw/DBIx::Class/;
+ __PACKAGE__->load_components(qw/Core/);
__PACKAGE__->table('artist');
__PACKAGE__->add_columns(qw/artistid name/);
__PACKAGE__->set_primary_key('artistid');
package MyApp::Schema::CD;
use base qw/DBIx::Class/;
- __PACKAGE__->table('artist');
+ __PACKAGE__->load_components(qw/Core/);
+ __PACKAGE__->table('cd');
__PACKAGE__->add_columns(qw/cdid artist title year/);
__PACKAGE__->set_primary_key('cdid');
__PACKAGE__->belongs_to(artist => 'MyApp::Schema::Artist');
=head3 Arguments: ($source, \%$attrs)
The resultset constructor. Takes a source object (usually a
-L<DBIx::Class::ResultSourceProxy::Table>) and an attribute hash (see L</ATRRIBUTES>
+L<DBIx::Class::ResultSourceProxy::Table>) and an attribute hash (see L</ATTRIBUTES>
below). Does not perform any queries -- these are executed as needed by the
other methods.
}
$attrs->{group_by} ||= $attrs->{select} if delete $attrs->{distinct};
+ $attrs->{order_by} = [ $attrs->{order_by} ]
+ if $attrs->{order_by} && !ref($attrs->{order_by});
+ $attrs->{order_by} ||= [];
+
if (my $prefetch = delete $attrs->{prefetch}) {
foreach my $p (ref $prefetch eq 'ARRAY'
? (@{$prefetch}) : ($prefetch)) {
push(@{$attrs->{from}}, $source->resolve_join($p, $attrs->{alias}))
unless $seen{$p};
}
- my @prefetch = $source->resolve_prefetch($p, $attrs->{alias});
+ my @prefetch = $source->resolve_prefetch(
+ $p, $attrs->{alias}, {}, $attrs->{order_by});
#die Dumper \@cols;
push(@{$attrs->{select}}, map { $_->[0] } @prefetch);
push(@{$attrs->{as}}, map { $_->[1] } @prefetch);
sub search {
my $self = shift;
- #use Data::Dumper;warn Dumper(@_);
my $rs;
if( @_ ) {
my $attrs = { %{$self->{attrs}} };
+ my $having = delete $attrs->{having};
if (@_ > 1 && ref $_[$#_] eq 'HASH') {
$attrs = { %$attrs, %{ pop(@_) } };
}
- my $where = (@_ ? ((@_ == 1 || ref $_[0] eq "HASH") ? shift : {@_}) : undef());
+ my $where = (@_
+ ? ((@_ == 1 || ref $_[0] eq "HASH")
+ ? shift
+ : ((@_ % 2)
+ ? $self->throw_exception(
+ "Odd number of arguments to search")
+ : {@_}))
+ : undef());
if (defined $where) {
$where = (defined $attrs->{where}
? { '-and' =>
$attrs->{where} = $where;
}
+ if (defined $having) {
+ $having = (defined $attrs->{having}
+ ? { '-and' =>
+ [ map { ref $_ eq 'ARRAY' ? [ -or => $_ ] : $_ }
+ $having, $attrs->{having} ] }
+ : $having);
+ $attrs->{having} = $having;
+ }
+
$rs = (ref $self)->new($self->result_source, $attrs);
}
else {
resultset.
=cut
-
+
sub search_literal {
my ($self, $cond, @vals) = @_;
my $attrs = (ref $vals[$#vals] eq 'HASH' ? { %{ pop(@vals) } } : {});
Also takes an optional C<key> attribute, to search by a specific key or unique
constraint. For example:
- my $cd = $schema->resultset('CD')->find_or_create(
+ my $cd = $schema->resultset('CD')->find(
{
artist => 'Massive Attack',
title => 'Mezzanine',
sub next {
my ($self) = @_;
- my $cache = $self->get_cache;
- if( @$cache ) {
+ my $cache;
+ if( @{$cache = $self->{all_cache} || []}) {
$self->{all_cache_position} ||= 0;
my $obj = $cache->[$self->{all_cache_position}];
$self->{all_cache_position}++;
return $obj;
}
- my @row = $self->cursor->next;
+ if ($self->{attrs}{cache}) {
+ $self->{all_cache_position} = 0;
+ return ($self->all)[0];
+ }
+ my @row = delete $self->{stashed_row} || $self->cursor->next;
# warn Dumper(\@row); use Data::Dumper;
return unless (@row);
return $self->_construct_object(@row);
my ($self, @row) = @_;
my @row_orig = @row; # copy @row for key comparison later, because @row will change
my @as = @{ $self->{attrs}{as} };
+#use Data::Dumper; warn Dumper \@as;
#warn "@cols -> @row";
my $info = [ {}, {} ];
foreach my $as (@as) {
foreach my $p (@parts) {
$target = $target->[1]->{$p} ||= [];
- # if cache is enabled, fetch inflated objs for prefetch
- if( $rs->{attrs}->{cache} ) {
- my $rel_info = $rs->result_source->relationship_info($p);
- my $cond = $rel_info->{cond};
- my $parent_rs = $rs;
- $rs = $rs->related_resultset($p);
- $rs->{attrs}->{cache} = 1;
- my @objs = ();
-
- # populate related resultset's cache if empty
- if( !@{ $rs->get_cache } ) {
- $rs->all;
- }
-
- # get ordinals for pk columns in $row, so values can be compared
- my $map = {};
- keys %$cond;
- my $re = qr/^\w+\./;
- while( my( $rel_key, $pk ) = ( each %$cond ) ) {
- $rel_key =~ s/$re//;
- $pk =~ s/$re//;
- $map->{$rel_key} = $pk;
- } #die Dumper $map;
-
- keys %$map;
- while( my( $rel_key, $pk ) = each( %$map ) ) {
- my $i = 0;
- foreach my $col ( $parent_rs->result_source->columns ) {
- if( $col eq $pk ) {
- $map->{$rel_key} = $i;
- }
- $i++;
- }
- } #die Dumper $map;
-
- $rs->reset(); # reset cursor/cache position
-
- # get matching objects for inflation
- OBJ: while( my $rel_obj = $rs->next ) {
- keys %$map;
- KEYS: while( my( $rel_key, $ordinal ) = each %$map ) {
- # use get_column to avoid auto inflation (want scalar value)
- if( $rel_obj->get_column($rel_key) ne $row_orig[$ordinal] ) {
- next OBJ;
- }
- push @objs, $rel_obj;
- }
- }
- $target->[0] = \@objs;
- }
+ $rs = $rs->related_resultset($p) if $rs->{attrs}->{cache};
}
+
$target->[0]->{$col} = shift @row
if ref($target->[0]) ne 'ARRAY'; # arrayref is pre-inflated objects, do not overwrite
}
$self->result_source, @$info);
$new = $self->{attrs}{record_filter}->($new)
if exists $self->{attrs}{record_filter};
+
return $new;
}
if @{ $self->get_cache };
my $group_by;
my $select = { 'count' => '*' };
- if( $group_by = delete $self->{attrs}{group_by} ) {
+ my $attrs = { %{ $self->{attrs} } };
+ if( $group_by = delete $attrs->{group_by} ) {
+ delete $attrs->{having};
my @distinct = (ref $group_by ? @$group_by : ($group_by));
# todo: try CONCAT for multi-column pk
my @pk = $self->result_source->primary_columns;
if( scalar(@pk) == 1 ) {
my $pk = shift(@pk);
- my $alias = $self->{attrs}{alias};
+ my $alias = $attrs->{alias};
my $re = qr/^($alias\.)?$pk$/;
foreach my $column ( @distinct) {
if( $column =~ $re ) {
#use Data::Dumper; die Dumper $select;
}
- my $attrs = { %{ $self->{attrs} },
- select => $select,
- as => [ 'count' ] };
+ $attrs->{select} = $select;
+ $attrs->{as} = [ 'count' ];
# offset, order by and page are not needed to count. record_filter is cdbi
delete $attrs->{$_} for qw/rows offset order_by page pager record_filter/;
($self->{count}) = (ref $self)->new($self->result_source, $attrs)->cursor->next;
- $self->{attrs}{group_by} = $group_by;
}
return 0 unless $self->{count};
my $count = $self->{count};
my @obj = map { $self->_construct_object(@$_); }
$self->cursor->all;
$self->set_cache( \@obj );
- return @{ $self->get_cache };
+ return @obj;
}
return map { $self->_construct_object(@$_); }
$self->cursor->all;
$class->find_or_create({ key => $val, ... });
-Searches for a record matching the search condition; if it doesn't find one,
-creates one and returns that instead.
+Searches for a record matching the search condition; if it doesn't find one,
+creates one and returns that instead.
my $cd = $schema->resultset('CD')->find_or_create({
cdid => 5,
"search_related: result source '" . $self->result_source->name .
"' has no such relationship ${rel}")
unless $rel_obj; #die Dumper $self->{attrs};
- my $rs;
- if( $self->{attrs}->{cache} ) {
- $rs = $self->search(undef);
- }
- else {
- $rs = $self->search(undef, { join => $rel });
- }
+ my $rs = $self->search(undef, { join => $rel });
+ #if( $self->{attrs}->{cache} ) {
+ # $rs = $self->search(undef);
+ #}
+ #else {
+ #}
#use Data::Dumper; die Dumper $rs->{attrs};#$rs = $self->search( undef );
#use Data::Dumper; warn Dumper $self->{attrs}, Dumper $rs->{attrs};
my $alias = (defined $rs->{attrs}{seen_join}{$rel}
]
],
{ 'mother.person_id' => 'child.mother_id' }
- ],
+ ],
]
},
);
projects / dbsrgits/DBIx-Class.git / blobdiff