use strict;
use warnings;
-use base qw/DBIx::Class::ResultSource::RowParser DBIx::Class/;
-
-use DBIx::Class::ResultSet;
-use DBIx::Class::ResultSourceHandle;
+use base 'DBIx::Class::ResultSource::RowParser';
+use mro 'c3';
use DBIx::Class::Carp;
-use DBIx::Class::_Util 'UNRESOLVABLE_CONDITION';
+use DBIx::Class::_Util qw( UNRESOLVABLE_CONDITION dbic_internal_try fail_on_internal_call );
+use SQL::Abstract 'is_literal_value';
use Devel::GlobalDestruction;
-use Try::Tiny;
-use List::Util 'first';
use Scalar::Util qw/blessed weaken isweak/;
+# FIXME - somehow breaks ResultSetManager, do not remove until investigated
+use DBIx::Class::ResultSet;
+
use namespace::clean;
__PACKAGE__->mk_group_accessors(simple => qw/
source_name name source_info
_ordered_columns _columns _primaries _unique_constraints
_relationships resultset_attributes
- column_info_from_storage
+ column_info_from_storage sqlt_deploy_callback
/);
__PACKAGE__->mk_group_accessors(component_class => qw/
result_class
/);
-__PACKAGE__->mk_classdata( sqlt_deploy_callback => 'default_sqlt_deploy_hook' );
-
=head1 NAME
DBIx::Class::ResultSource - Result source object
L<DBIx::Class::ResultSourceProxy::Table> component, which defines
the L<table|DBIx::Class::ResultSourceProxy::Table/table> method.
When called, C<table> creates and stores an instance of
-L<DBIx::Class::ResultSoure::Table>. Luckily, to use tables as result
+L<DBIx::Class::ResultSource::Table>. Luckily, to use tables as result
sources, you don't need to remember any of this.
Result sources representing select queries, or views, can also be
=head2 Finding result source objects
As mentioned above, a result source instance is created and stored for
-you when you define a L<result class|DBIx::Class::Manual::Glossary/Result class>.
+you when you define a
+L<Result Class|DBIx::Class::Manual::Glossary/Result Class>.
You can retrieve the result source at runtime in the following ways:
=head1 METHODS
-=pod
+=head2 new
+
+ $class->new();
+
+ $class->new({attribute_name => value});
+
+Creates a new ResultSource object. Not normally called directly by end users.
=cut
$new->{_relationships} = { %{$new->{_relationships}||{}} };
$new->{name} ||= "!!NAME NOT SET!!";
$new->{_columns_info_loaded} ||= 0;
+ $new->{sqlt_deploy_callback} ||= 'default_sqlt_deploy_hook';
return $new;
}
$source->add_columns('col1' => \%col1_info, 'col2' => \%col2_info, ...);
+ $source->add_columns(
+ 'col1' => { data_type => 'integer', is_nullable => 1, ... },
+ 'col2' => { data_type => 'text', is_auto_increment => 1, ... },
+ );
+
Adds columns to the result source. If supplied colname => hashref
pairs, uses the hashref as the L</column_info> for that column. Repeated
calls of this method will add more columns, not replace them.
restriction. This is currently only used to create tables from your
schema, see L<DBIx::Class::Schema/deploy>.
+ { size => [ 9, 6 ] }
+
+For decimal or float values you can specify an ArrayRef in order to
+control precision, assuming your database's
+L<SQL::Translator::Producer> supports it.
+
=item is_nullable
{ is_nullable => 1 }
return $self;
}
-sub add_column { shift->add_columns(@_); } # DO NOT CHANGE THIS TO GLOB
+sub add_column {
+ DBIx::Class::_ENV_::ASSERT_NO_INTERNAL_INDIRECT_CALLS and fail_on_internal_call;
+ shift->add_columns(@_)
+}
=head2 has_column
if ( ! $self->_columns->{$column}{data_type}
and ! $self->{_columns_info_loaded}
and $self->column_info_from_storage
- and my $stor = try { $self->storage } )
+ and my $stor = dbic_internal_try { $self->schema->storage } )
{
$self->{_columns_info_loaded}++;
# try for the case of storage without table
- try {
+ dbic_internal_try {
my $info = $stor->columns_info_for( $self->from );
my $lc_info = { map
{ (lc $_) => $info->{$_} }
my $colinfo = $self->_columns;
if (
- first { ! $_->{data_type} } values %$colinfo
- and
! $self->{_columns_info_loaded}
and
$self->column_info_from_storage
and
- my $stor = try { $self->storage }
+ grep { ! $_->{data_type} } values %$colinfo
+ and
+ my $stor = dbic_internal_try { $self->schema->storage }
) {
$self->{_columns_info_loaded}++;
# try for the case of storage without table
- try {
+ dbic_internal_try {
my $info = $stor->columns_info_for( $self->from );
my $lc_info = { map
{ (lc $_) => $info->{$_} }
$self->_ordered_columns([ grep { not $to_remove{$_} } @{$self->_ordered_columns} ]);
}
-sub remove_column { shift->remove_columns(@_); } # DO NOT CHANGE THIS TO GLOB
+sub remove_column {
+ DBIx::Class::_ENV_::ASSERT_NO_INTERNAL_INDIRECT_CALLS and fail_on_internal_call;
+ shift->remove_columns(@_)
+}
=head2 set_primary_key
Defines one or more columns as primary key for this source. Must be
called after L</add_columns>.
-Additionally, defines a L<unique constraint|add_unique_constraint>
+Additionally, defines a L<unique constraint|/add_unique_constraint>
named C<primary>.
Note: you normally do want to define a primary key on your sources
my $self = shift;
my @constraints = @_;
- if ( !(@constraints % 2) && first { ref $_ ne 'ARRAY' } @constraints ) {
+ if ( !(@constraints % 2) && grep { ref $_ ne 'ARRAY' } @constraints ) {
# with constraint name
while (my ($name, $constraint) = splice @constraints, 0, 2) {
$self->add_unique_constraint($name => $constraint);
my $name = $self->name;
$name = $$name if (ref $name eq 'SCALAR');
+ $name =~ s/ ^ [^\.]+ \. //x; # strip possible schema qualifier
return join '_', $name, @$cols;
}
=back
- __PACKAGE__->sqlt_deploy_callback('mycallbackmethod');
+ __PACKAGE__->result_source_instance->sqlt_deploy_callback('mycallbackmethod');
or
- __PACKAGE__->sqlt_deploy_callback(sub {
+ __PACKAGE__->result_source_instance->sqlt_deploy_callback(sub {
my ($source_instance, $sqlt_table) = @_;
...
} );
$self->resultset_class->new(
$self,
{
- try { %{$self->schema->default_resultset_attributes} },
+ ( dbic_internal_try { %{$self->schema->default_resultset_attributes} } ),
%{$self->{resultset_attributes}},
},
);
sub from { die 'Virtual method!' }
+=head2 source_info
+
+Stores a hashref of per-source metadata. No specific key names
+have yet been standardized, the examples below are purely hypothetical
+and don't actually accomplish anything on their own:
+
+ __PACKAGE__->source_info({
+ "_tablespace" => 'fast_disk_array_3',
+ "_engine" => 'InnoDB',
+ });
+
=head2 schema
=over 4
=cut
-sub storage { shift->schema->storage; }
+sub storage {
+ DBIx::Class::_ENV_::ASSERT_NO_INTERNAL_INDIRECT_CALLS and fail_on_internal_call;
+ $_[0]->schema->storage
+}
=head2 add_relationship
# Check foreign and self are right in cond
if ( (ref $cond ||'') eq 'HASH') {
- for (keys %$cond) {
- $self->throw_exception("Keys of condition should be of form 'foreign.col', not '$_'")
- if /\./ && !/^foreign\./;
- }
+ $_ =~ /^foreign\./ or $self->throw_exception("Malformed relationship condition key '$_': must be prefixed with 'foreign.'")
+ for keys %$cond;
+
+ $_ =~ /^self\./ or $self->throw_exception("Malformed relationship condition value '$_': must be prefixed with 'self.'")
+ for values %$cond;
}
my %rels = %{ $self->_relationships };
$self->_relationships(\%rels);
return $self;
-
-# XXX disabled. doesn't work properly currently. skip in tests.
-
- my $f_source = $self->schema->source($f_source_name);
- unless ($f_source) {
- $self->ensure_class_loaded($f_source_name);
- $f_source = $f_source_name->result_source;
- #my $s_class = ref($self->schema);
- #$f_source_name =~ m/^${s_class}::(.*)$/;
- #$self->schema->register_class(($1 || $f_source_name), $f_source_name);
- #$f_source = $self->schema->source($f_source_name);
- }
- return unless $f_source; # Can't test rel without f_source
-
- try { $self->_resolve_join($rel, 'me', {}, []) }
- catch {
- # If the resolve failed, back out and re-throw the error
- delete $rels{$rel};
- $self->_relationships(\%rels);
- $self->throw_exception("Error creating relationship $rel: $_");
- };
-
- 1;
}
=head2 relationships
=cut
sub relationships {
- return keys %{shift->_relationships};
+ keys %{$_[0]->_relationships};
}
=head2 relationship_info
# to use the source_names, otherwise we will use the actual classes
# the schema may be partial
- my $roundtrip_rsrc = try { $other_rsrc->related_source($other_rel) }
+ my $roundtrip_rsrc = dbic_internal_try { $other_rsrc->related_source($other_rel) }
or next;
if ($registered_source_name) {
return undef;
}
+sub _minimal_valueset_satisfying_constraint {
+ my $self = shift;
+ my $args = { ref $_[0] eq 'HASH' ? %{ $_[0] } : @_ };
+
+ $args->{columns_info} ||= $self->columns_info;
+
+ my $vals = $self->schema->storage->_extract_fixed_condition_columns(
+ $args->{values},
+ ($args->{carp_on_nulls} ? 'consider_nulls' : undef ),
+ );
+
+ my $cols;
+ for my $col ($self->unique_constraint_columns($args->{constraint_name}) ) {
+ if( ! exists $vals->{$col} or ( $vals->{$col}||'' ) eq UNRESOLVABLE_CONDITION ) {
+ $cols->{missing}{$col} = undef;
+ }
+ elsif( ! defined $vals->{$col} ) {
+ $cols->{$args->{carp_on_nulls} ? 'undefined' : 'missing'}{$col} = undef;
+ }
+ else {
+ # we need to inject back the '=' as _extract_fixed_condition_columns
+ # will strip it from literals and values alike, resulting in an invalid
+ # condition in the end
+ $cols->{present}{$col} = { '=' => $vals->{$col} };
+ }
+
+ $cols->{fc}{$col} = 1 if (
+ ( ! $cols->{missing} or ! exists $cols->{missing}{$col} )
+ and
+ keys %{ $args->{columns_info}{$col}{_filter_info} || {} }
+ );
+ }
+
+ $self->throw_exception( sprintf ( "Unable to satisfy requested constraint '%s', missing values for column(s): %s",
+ $args->{constraint_name},
+ join (', ', map { "'$_'" } sort keys %{$cols->{missing}} ),
+ ) ) if $cols->{missing};
+
+ $self->throw_exception( sprintf (
+ "Unable to satisfy requested constraint '%s', FilterColumn values not usable for column(s): %s",
+ $args->{constraint_name},
+ join (', ', map { "'$_'" } sort keys %{$cols->{fc}}),
+ )) if $cols->{fc};
+
+ if (
+ $cols->{undefined}
+ and
+ !$ENV{DBIC_NULLABLE_KEY_NOWARN}
+ ) {
+ carp_unique ( sprintf (
+ "NULL/undef values supplied for requested unique constraint '%s' (NULL "
+ . 'values in column(s): %s). This is almost certainly not what you wanted, '
+ . 'though you can set DBIC_NULLABLE_KEY_NOWARN to disable this warning.',
+ $args->{constraint_name},
+ join (', ', map { "'$_'" } sort keys %{$cols->{undefined}}),
+ ));
+ }
+
+ return { map { %{ $cols->{$_}||{} } } qw(present undefined) };
+}
+
# Returns the {from} structure used to express JOIN conditions
sub _resolve_join {
my ($self, $join, $alias, $seen, $jpath, $parent_force_left) = @_;
$force_left ||= lc($rel_info->{attrs}{join_type}||'') eq 'left';
# the actual seen value will be incremented by the recursion
- my $as = $self->storage->relname_to_table_alias(
+ my $as = $self->schema->storage->relname_to_table_alias(
$rel, ($seen->{$rel} && $seen->{$rel} + 1)
);
}
else {
my $count = ++$seen->{$join};
- my $as = $self->storage->relname_to_table_alias(
+ my $as = $self->schema->storage->relname_to_table_alias(
$join, ($count > 1 && $count)
);
,
-join_path => [@$jpath, { $join => $as } ],
-is_single => (
- (! $rel_info->{attrs}{accessor})
+ ! $rel_info->{attrs}{accessor}
or
- first { $rel_info->{attrs}{accessor} eq $_ } (qw/single filter/)
+ $rel_info->{attrs}{accessor} eq 'single'
+ or
+ $rel_info->{attrs}{accessor} eq 'filter'
),
-alias => $as,
-relation_chain_depth => ( $seen->{-relation_chain_depth} || 0 ) + 1,
},
- scalar $self->_resolve_condition($rel_info->{cond}, $as, $alias, $join)
+ $self->_resolve_relationship_condition(
+ rel_name => $join,
+ self_alias => $alias,
+ foreign_alias => $as,
+ )->{condition},
];
}
}
return 1;
}
+sub resolve_condition {
+ carp 'resolve_condition is a private method, stop calling it';
+ shift->_resolve_condition (@_);
+}
+
sub _resolve_condition {
# carp_unique sprintf
# '_resolve_condition is a private method, and moreover is about to go '
}
}
- $self->throw_exception('No practical way to resolve a relationship between two structures')
- if $is_objlike[0] and $is_objlike[1];
-
my $args = {
- condition => $cond,
-
# where-is-waldo block guesses relname, then further down we override it if available
(
- $is_objlike[1] ? ( rel_name => $res_args[0], self_alias => $res_args[0], foreign_alias => 'me', self_resultobj => $res_args[1] )
- : $is_objlike[0] ? ( rel_name => $res_args[1], self_alias => 'me', foreign_alias => $res_args[1], foreign_resultobj => $res_args[0] )
- : ( rel_name => $res_args[0], self_alias => $res_args[1], foreign_alias => $res_args[0] )
+ $is_objlike[1] ? ( rel_name => $res_args[0], self_alias => $res_args[0], foreign_alias => 'me', self_result_object => $res_args[1] )
+ : $is_objlike[0] ? ( rel_name => $res_args[1], self_alias => 'me', foreign_alias => $res_args[1], foreign_values => $res_args[0] )
+ : ( rel_name => $res_args[0], self_alias => $res_args[1], foreign_alias => $res_args[0] )
),
( $rel_name ? ( rel_name => $rel_name ) : () ),
};
+
+ # Allowing passing relconds different than the relationshup itself is cute,
+ # but likely dangerous. Remove that from the (still unofficial) API of
+ # _resolve_relationship_condition, and instead make it "hard on purpose"
+ local $self->relationship_info( $args->{rel_name} )->{cond} = $cond if defined $cond;
+
#######################
# now it's fucking easy isn't it?!
# _resolve_relationship_condition always returns qualified cols even in the
# case of join_free_condition, but nothing downstream expects this
- if (ref $res[0] eq 'HASH' and ($is_objlike[0] or $is_objlike[1]) ) {
+ if ($rc->{join_free_condition} and ref $res[0] eq 'HASH') {
$res[0] = { map
{ ($_ =~ /\.(.+)/) => $res[0]{$_} }
keys %{$res[0]}
# metadata
#
## self-explanatory API, modeled on the custom cond coderef:
-# rel_name
-# foreign_alias
-# foreign_resultobj
-# self_alias
-# self_resultobj
-# require_join_free_condition
-# infer_values_based_on (optional, mandatory hashref argument)
-# condition (optional, derived from $self->rel_info(rel_name))
+# rel_name => (scalar)
+# foreign_alias => (scalar)
+# foreign_values => (either not supplied, or a hashref, or a foreign ResultObject (to be ->get_columns()ed), or plain undef )
+# self_alias => (scalar)
+# self_result_object => (either not supplied or a result object)
+# require_join_free_condition => (boolean, throws on failure to construct a JF-cond)
+# infer_values_based_on => (either not supplied or a hashref, implies require_join_free_condition)
#
## returns a hash
-# condition
-# join_free_condition (maybe undef)
-# inferred_values (maybe undef, always complete or empty)
+# condition => (a valid *likely fully qualified* sqla cond structure)
+# identity_map => (a hashref of foreign-to-self *unqualified* column equality names)
+# join_free_condition => (a valid *fully qualified* sqla cond structure, maybe unset)
+# inferred_values => (in case of an available join_free condition, this is a hashref of
+# *unqualified* column/value *EQUALITY* pairs, representing an amalgamation
+# of the JF-cond parse and infer_values_based_on
+# always either complete or unset)
#
sub _resolve_relationship_condition {
my $self = shift;
if !defined $args->{$_} or length ref $args->{$_};
}
- my $rel_info = $self->relationship_info($args->{rel_name});
- # or $self->throw_exception( "No such relationship '$args->{rel_name}'" );
+ $self->throw_exception("Arguments 'self_alias' and 'foreign_alias' may not be identical")
+ if $args->{self_alias} eq $args->{foreign_alias};
+# TEMP
my $exception_rel_id = "relationship '$args->{rel_name}' on source '@{[ $self->source_name ]}'";
- $self->throw_exception("No practical way to resolve $exception_rel_id between two objects")
- if defined $args->{self_resultobj} and defined $args->{foreign_resultobj};
-
+ my $rel_info = $self->relationship_info($args->{rel_name})
+# TEMP
+# or $self->throw_exception( "No such $exception_rel_id" );
+ or carp_unique("Requesting resolution on non-existent relationship '$args->{rel_name}' on source '@{[ $self->source_name ]}': fix your code *soon*, as it will break with the next major version");
- $self->throw_exception( "Object '$args->{foreign_resultobj}' must be of class '$rel_info->{class}'" )
- if defined blessed $args->{foreign_resultobj} and ! $args->{foreign_resultobj}->isa($rel_info->{class});
+# TEMP
+ $exception_rel_id = "relationship '$rel_info->{_original_name}' on source '@{[ $self->source_name ]}'"
+ if $rel_info and exists $rel_info->{_original_name};
- $args->{condition} ||= $rel_info->{cond};
+ $self->throw_exception("No practical way to resolve $exception_rel_id between two data structures")
+ if exists $args->{self_result_object} and exists $args->{foreign_values};
$self->throw_exception( "Argument to infer_values_based_on must be a hash" )
if exists $args->{infer_values_based_on} and ref $args->{infer_values_based_on} ne 'HASH';
$args->{require_join_free_condition} ||= !!$args->{infer_values_based_on};
+ $self->throw_exception( "Argument 'self_result_object' must be an object inheriting from DBIx::Class::Row" )
+ if (
+ exists $args->{self_result_object}
+ and
+ ( ! defined blessed $args->{self_result_object} or ! $args->{self_result_object}->isa('DBIx::Class::Row') )
+ )
+ ;
+
+ my $rel_rsrc = $self->related_source($args->{rel_name});
+ my $storage = $self->schema->storage;
+
+ if (exists $args->{foreign_values}) {
+
+ if (! defined $args->{foreign_values} ) {
+ # fallback: undef => {}
+ $args->{foreign_values} = {};
+ }
+ elsif (defined blessed $args->{foreign_values}) {
+
+ $self->throw_exception( "Objects supplied as 'foreign_values' ($args->{foreign_values}) must inherit from DBIx::Class::Row" )
+ unless $args->{foreign_values}->isa('DBIx::Class::Row');
+
+ carp_unique(
+ "Objects supplied as 'foreign_values' ($args->{foreign_values}) "
+ . "usually should inherit from the related ResultClass ('@{[ $rel_rsrc->result_class ]}'), "
+ . "perhaps you've made a mistake invoking the condition resolver?"
+ ) unless $args->{foreign_values}->isa($rel_rsrc->result_class);
+
+ $args->{foreign_values} = { $args->{foreign_values}->get_columns };
+ }
+ elsif ( ref $args->{foreign_values} eq 'HASH' ) {
+
+ # re-build {foreign_values} excluding identically named rels
+ if( keys %{$args->{foreign_values}} ) {
+
+ my ($col_idx, $rel_idx) = map
+ { { map { $_ => 1 } $rel_rsrc->$_ } }
+ qw( columns relationships )
+ ;
+
+ my $equivalencies = $storage->_extract_fixed_condition_columns(
+ $args->{foreign_values},
+ 'consider nulls',
+ );
+
+ $args->{foreign_values} = { map {
+ # skip if relationship *and* a non-literal ref
+ # this means a multicreate stub was passed in
+ (
+ $rel_idx->{$_}
+ and
+ length ref $args->{foreign_values}{$_}
+ and
+ ! is_literal_value($args->{foreign_values}{$_})
+ )
+ ? ()
+ : ( $_ => (
+ ! $col_idx->{$_}
+ ? $self->throw_exception( "Key '$_' supplied as 'foreign_values' is not a column on related source '@{[ $rel_rsrc->source_name ]}'" )
+ : ( !exists $equivalencies->{$_} or ($equivalencies->{$_}||'') eq UNRESOLVABLE_CONDITION )
+ ? $self->throw_exception( "Value supplied for '...{foreign_values}{$_}' is not a direct equivalence expression" )
+ : $args->{foreign_values}{$_}
+ ))
+ } keys %{$args->{foreign_values}} };
+ }
+ }
+ else {
+ $self->throw_exception(
+ "Argument 'foreign_values' must be either an object inheriting from '@{[ $rel_rsrc->result_class ]}', "
+ . "or a hash reference, or undef"
+ );
+ }
+ }
+
my $ret;
- if (ref $args->{condition} eq 'CODE') {
+ if (ref $rel_info->{cond} eq 'CODE') {
my $cref_args = {
rel_name => $args->{rel_name},
foreign_alias => $args->{foreign_alias},
( map
{ (exists $args->{$_}) ? ( $_ => $args->{$_} ) : () }
- qw( self_resultobj foreign_resultobj )
+ qw( self_result_object foreign_values )
),
};
# legacy - never remove these!!!
$cref_args->{foreign_relname} = $cref_args->{rel_name};
- $cref_args->{self_rowobj} = $cref_args->{self_resultobj}
- if exists $cref_args->{self_resultobj};
+ $cref_args->{self_rowobj} = $cref_args->{self_result_object}
+ if exists $cref_args->{self_result_object};
- ($ret->{condition}, $ret->{join_free_condition}, my @extra) = $args->{condition}->($cref_args);
+ ($ret->{condition}, $ret->{join_free_condition}, my @extra) = $rel_info->{cond}->($cref_args);
- # FIXME sanity check
- carp_unique('A custom condition coderef can return at most 2 conditions: extra return values discarded')
+ # sanity check
+ $self->throw_exception("A custom condition coderef can return at most 2 conditions, but $exception_rel_id returned extra values: @extra")
if @extra;
if (my $jfc = $ret->{join_free_condition}) {
) unless ref $jfc eq 'HASH';
my ($joinfree_alias, $joinfree_source);
- if (defined $args->{self_resultobj}) {
+ if (defined $args->{self_result_object}) {
$joinfree_alias = $args->{foreign_alias};
- $joinfree_source = $self->related_source($args->{rel_name});
+ $joinfree_source = $rel_rsrc;
}
- elsif (defined $args->{foreign_resultobj}) {
+ elsif (defined $args->{foreign_values}) {
$joinfree_alias = $args->{self_alias};
$joinfree_source = $self;
}
$joinfree_source->columns
};
- $fq_col_list->{$_} or $self->throw_exception (
+ exists $fq_col_list->{$_} or $self->throw_exception (
"The join-free condition returned for $exception_rel_id may only "
- . 'contain keys that are fully qualified column names of the corresponding source'
+ . 'contain keys that are fully qualified column names of the corresponding source '
+ . "'$joinfree_alias' (instead it returned '$_')"
) for keys %$jfc;
+ (
+ length ref $_
+ and
+ defined blessed($_)
+ and
+ $_->isa('DBIx::Class::Row')
+ and
+ $self->throw_exception (
+ "The join-free condition returned for $exception_rel_id may not "
+ . 'contain result objects as values - perhaps instead of invoking '
+ . '->$something you meant to return ->get_column($something)'
+ )
+ ) for values %$jfc;
+
}
}
- elsif (ref $args->{condition} eq 'HASH') {
+ elsif (ref $rel_info->{cond} eq 'HASH') {
# the condition is static - use parallel arrays
# for a "pivot" depending on which side of the
# rel did we get as an object
my (@f_cols, @l_cols);
- for my $fc (keys %{$args->{condition}}) {
- my $lc = $args->{condition}{$fc};
+ for my $fc (keys %{ $rel_info->{cond} }) {
+ my $lc = $rel_info->{cond}{$fc};
# FIXME STRICTMODE should probably check these are valid columns
$fc =~ s/^foreign\.// ||
push @l_cols, $lc;
}
- # construct the crosstable condition
- $ret->{condition} = { map
- {( "$args->{foreign_alias}.$f_cols[$_]" => { -ident => "$args->{self_alias}.$l_cols[$_]" } )}
- (0..$#f_cols)
+ # construct the crosstable condition and the identity map
+ for (0..$#f_cols) {
+ $ret->{condition}{"$args->{foreign_alias}.$f_cols[$_]"} = { -ident => "$args->{self_alias}.$l_cols[$_]" };
+ $ret->{identity_map}{$l_cols[$_]} = $f_cols[$_];
};
- if (exists $args->{self_resultobj} or exists $args->{foreign_resultobj}) {
-
- my ($obj, $obj_alias, $plain_alias, $obj_cols, $plain_cols) = defined $args->{self_resultobj}
- ? ( @{$args}{qw( self_resultobj self_alias foreign_alias )}, \@l_cols, \@f_cols )
- : ( @{$args}{qw( foreign_resultobj foreign_alias self_alias )}, \@f_cols, \@l_cols )
- ;
-
- for my $i (0..$#$obj_cols) {
+ if ($args->{foreign_values}) {
+ $ret->{join_free_condition}{"$args->{self_alias}.$l_cols[$_]"} = $args->{foreign_values}{$f_cols[$_]}
+ for 0..$#f_cols;
+ }
+ elsif (defined $args->{self_result_object}) {
- # FIXME - temp shim
- if (! blessed $obj) {
- $ret->{join_free_condition}{"$plain_alias.$plain_cols->[$i]"} = $obj->{$obj_cols->[$i]};
+ for my $i (0..$#l_cols) {
+ if ( $args->{self_result_object}->has_column_loaded($l_cols[$i]) ) {
+ $ret->{join_free_condition}{"$args->{foreign_alias}.$f_cols[$i]"} = $args->{self_result_object}->get_column($l_cols[$i]);
}
- elsif (
- defined $args->{self_resultobj}
- and
- ! $obj->has_column_loaded($obj_cols->[$i])
- ) {
-
+ else {
$self->throw_exception(sprintf
"Unable to resolve relationship '%s' from object '%s': column '%s' not "
. 'loaded from storage (or not passed to new() prior to insert()). You '
. 'probably need to call ->discard_changes to get the server-side defaults '
. 'from the database.',
$args->{rel_name},
- $obj,
- $obj_cols->[$i],
- ) if $obj->in_storage;
+ $args->{self_result_object},
+ $l_cols[$i],
+ ) if $args->{self_result_object}->in_storage;
# FIXME - temporarly force-override
delete $args->{require_join_free_condition};
$ret->{join_free_condition} = UNRESOLVABLE_CONDITION;
last;
}
- else {
- $ret->{join_free_condition}{"$plain_alias.$plain_cols->[$i]"} = $obj->get_column($obj_cols->[$i]);
- }
}
}
}
- elsif (ref $args->{condition} eq 'ARRAY') {
- if (@{$args->{condition}} == 0) {
+ elsif (ref $rel_info->{cond} eq 'ARRAY') {
+ if (@{ $rel_info->{cond} } == 0) {
$ret = {
condition => UNRESOLVABLE_CONDITION,
join_free_condition => UNRESOLVABLE_CONDITION,
};
}
- elsif (@{$args->{condition}} == 1) {
- $ret = $self->_resolve_relationship_condition({
- %$args,
- condition => $args->{condition}[0],
- });
- }
else {
- # we are discarding inferred values here... likely incorrect...
- # then again - the entire thing is an OR, so we *can't* use them anyway
- for my $subcond ( map
- { $self->_resolve_relationship_condition({ %$args, condition => $_ }) }
- @{$args->{condition}}
- ) {
- $self->throw_exception('Either all or none of the OR-condition members can resolve to a join-free condition')
- if $ret->{join_free_condition} and ! $subcond->{join_free_condition};
+ my @subconds = map {
+ local $rel_info->{cond} = $_;
+ $self->_resolve_relationship_condition( $args );
+ } @{ $rel_info->{cond} };
+
+ if( @{ $rel_info->{cond} } == 1 ) {
+ $ret = $subconds[0];
+ }
+ else {
+ # we are discarding inferred values here... likely incorrect...
+ # then again - the entire thing is an OR, so we *can't* use them anyway
+ for my $subcond ( @subconds ) {
+ $self->throw_exception('Either all or none of the OR-condition members must resolve to a join-free condition')
+ if ( $ret and ( $ret->{join_free_condition} xor $subcond->{join_free_condition} ) );
- $subcond->{$_} and push @{$ret->{$_}}, $subcond->{$_} for (qw(condition join_free_condition));
+ $subcond->{$_} and push @{$ret->{$_}}, $subcond->{$_} for (qw(condition join_free_condition));
+ }
}
}
}
else {
- $self->throw_exception ("Can't handle condition $args->{condition} for $exception_rel_id yet :(");
+ $self->throw_exception ("Can't handle condition $rel_info->{cond} for $exception_rel_id yet :(");
}
- $self->throw_exception(ucfirst "$exception_rel_id does not resolve to a join-free condition fragment") if (
+ if (
$args->{require_join_free_condition}
and
( ! $ret->{join_free_condition} or $ret->{join_free_condition} eq UNRESOLVABLE_CONDITION )
- );
+ ) {
+ $self->throw_exception(
+ ucfirst sprintf "$exception_rel_id does not resolve to a %sjoin-free condition fragment",
+ exists $args->{foreign_values}
+ ? "'foreign_values'-based reversed-"
+ : ''
+ );
+ }
# we got something back - sanity check and infer values if we can
my @nonvalues;
- if ( my $jfc = $ret->{join_free_condition} and $ret->{join_free_condition} ne UNRESOLVABLE_CONDITION ) {
+ if (
+ $ret->{join_free_condition}
+ and
+ $ret->{join_free_condition} ne UNRESOLVABLE_CONDITION
+ and
+ my $jfc = $storage->_collapse_cond( $ret->{join_free_condition} )
+ ) {
- my $jfc_eqs = $self->schema->storage->_extract_fixed_condition_columns($jfc, 'consider_nulls');
+ my $jfc_eqs = $storage->_extract_fixed_condition_columns($jfc, 'consider_nulls');
if (keys %$jfc_eqs) {
for keys %{$args->{infer_values_based_on}};
}
- $ret
+ # add the identities based on the main condition
+ # (may already be there, since easy to calculate on the fly in the HASH case)
+ if ( ! $ret->{identity_map} ) {
+
+ my $col_eqs = $storage->_extract_fixed_condition_columns($ret->{condition});
+
+ my $colinfos;
+ for my $lhs (keys %$col_eqs) {
+
+ next if $col_eqs->{$lhs} eq UNRESOLVABLE_CONDITION;
+
+ # there is no way to know who is right and who is left in a cref
+ # therefore a full blown resolution call, and figure out the
+ # direction a bit further below
+ $colinfos ||= $storage->_resolve_column_info([
+ { -alias => $args->{self_alias}, -rsrc => $self },
+ { -alias => $args->{foreign_alias}, -rsrc => $rel_rsrc },
+ ]);
+
+ next unless $colinfos->{$lhs}; # someone is engaging in witchcraft
+
+ if ( my $rhs_ref = is_literal_value( $col_eqs->{$lhs} ) ) {
+
+ if (
+ $colinfos->{$rhs_ref->[0]}
+ and
+ $colinfos->{$lhs}{-source_alias} ne $colinfos->{$rhs_ref->[0]}{-source_alias}
+ ) {
+ ( $colinfos->{$lhs}{-source_alias} eq $args->{self_alias} )
+ ? ( $ret->{identity_map}{$colinfos->{$lhs}{-colname}} = $colinfos->{$rhs_ref->[0]}{-colname} )
+ : ( $ret->{identity_map}{$colinfos->{$rhs_ref->[0]}{-colname}} = $colinfos->{$lhs}{-colname} )
+ ;
+ }
+ }
+ elsif (
+ $col_eqs->{$lhs} =~ /^ ( \Q$args->{self_alias}\E \. .+ ) /x
+ and
+ ($colinfos->{$1}||{})->{-result_source} == $rel_rsrc
+ ) {
+ my ($lcol, $rcol) = map
+ { $colinfos->{$_}{-colname} }
+ ( $lhs, $1 )
+ ;
+ carp_unique(
+ "The $exception_rel_id specifies equality of column '$lcol' and the "
+ . "*VALUE* '$rcol' (you did not use the { -ident => ... } operator)"
+ );
+ }
+ }
+ }
+
+ # FIXME - temporary, to fool the idiotic check in SQLMaker::_join_condition
+ $ret->{condition} = { -and => [ $ret->{condition} ] }
+ unless $ret->{condition} eq UNRESOLVABLE_CONDITION;
+
+ $ret;
}
=head2 related_source
# if we are not registered with a schema - just use the prototype
# however if we do have a schema - ask for the source by name (and
# throw in the process if all fails)
- if (my $schema = try { $self->schema }) {
+ if (my $schema = dbic_internal_try { $self->schema }) {
$schema->source($self->relationship_info($rel)->{source});
}
else {
=cut
sub handle {
+ require DBIx::Class::ResultSourceHandle;
return DBIx::Class::ResultSourceHandle->new({
source_moniker => $_[0]->source_name,
my $global_phase_destroy;
sub DESTROY {
+ ### NO detected_reinvoked_destructor check
+ ### This code very much relies on being called multuple times
+
return if $global_phase_destroy ||= in_global_destruction;
######
# which will serve as a signal to not try doing anything else
# however beware - on older perls the exception seems randomly untrappable
# due to some weird race condition during thread joining :(((
+ local $SIG{__DIE__} if $SIG{__DIE__};
local $@;
eval {
weaken $_[0]->{schema};
# if schema is still there reintroduce ourselves with strong refs back to us
if ($_[0]->{schema}) {
my $srcregs = $_[0]->{schema}->source_registrations;
- for (keys %$srcregs) {
- next unless $srcregs->{$_};
- $srcregs->{$_} = $_[0] if $srcregs->{$_} == $_[0];
- }
+
+ defined $srcregs->{$_}
+ and
+ $srcregs->{$_} == $_[0]
+ and
+ $srcregs->{$_} = $_[0]
+ and
+ last
+ for keys %$srcregs;
}
1;
$global_phase_destroy = 1;
};
- return;
+ # Dummy NEXTSTATE ensuring the all temporaries on the stack are garbage
+ # collected before leaving this scope. Depending on the code above, this
+ # may very well be just a preventive measure guarding future modifications
+ undef;
}
sub STORABLE_freeze { Storable::nfreeze($_[0]->handle) }
;
}
-=head2 source_info
-
-Stores a hashref of per-source metadata. No specific key names
-have yet been standardized, the examples below are purely hypothetical
-and don't actually accomplish anything on their own:
-
- __PACKAGE__->source_info({
- "_tablespace" => 'fast_disk_array_3',
- "_engine" => 'InnoDB',
- });
-
-=head2 new
-
- $class->new();
-
- $class->new({attribute_name => value});
-
-Creates a new ResultSource object. Not normally called directly by end users.
-
=head2 column_info_from_storage
=over
metadata from storage as necessary. This is *deprecated*, and
should not be used. It will be removed before 1.0.
+=head1 FURTHER QUESTIONS?
-=head1 AUTHOR AND CONTRIBUTORS
-
-See L<AUTHOR|DBIx::Class/AUTHOR> and L<CONTRIBUTORS|DBIx::Class/CONTRIBUTORS> in DBIx::Class
+Check the list of L<additional DBIC resources|DBIx::Class/GETTING HELP/SUPPORT>.
-=head1 LICENSE
+=head1 COPYRIGHT AND LICENSE
-You may distribute this code under the same terms as Perl itself.
+This module is free software L<copyright|DBIx::Class/COPYRIGHT AND LICENSE>
+by the L<DBIx::Class (DBIC) authors|DBIx::Class/AUTHORS>. You can
+redistribute it and/or modify it under the same terms as the
+L<DBIx::Class library|DBIx::Class/COPYRIGHT AND LICENSE>.
=cut