use Carp;
use Sort::Naturally;
+use SL::DBUtils;
use SL::DB::Helper::Mappings;
use SL::DB::RecordLink;
my $self = shift;
my %params = @_;
- my $wanted = $params{direction} || croak("Missing parameter `direction'");
+ my $wanted = $params{direction};
+
+ if (!$wanted) {
+ if ($params{to} && $params{from}) {
+ $wanted = 'both';
+ } elsif ($params{to}) {
+ $wanted = 'to';
+ } elsif ($params{from}) {
+ $wanted = 'from';
+ } else {
+ $wanted = 'both';
+ }
+ }
if ($wanted eq 'both') {
my $both = delete($params{both});
};
# If no 'via' is given then use a simple(r) method for querying the wanted objects.
- if (!$params{via}) {
+ if (!$params{via} && !$params{recursive}) {
my @query = ( "${myself}_table" => $my_table,
"${myself}_id" => $self->id );
push @query, ( "${wanted}_table" => $wanted_tables ) if $wanted_tables;
}
# More complex handling for the 'via' case.
- my @sources = ( $self );
- my @targets = map { SL::DB::Helper::Mappings::get_table_for_package($_) } @{ ref($params{via}) ? $params{via} : [ $params{via} ] };
- push @targets, @{ $wanted_tables } if $wanted_tables;
-
- my %seen = map { ($_->meta->table . $_->id => 1) } @sources;
-
- while (@targets) {
- my @new_sources = @sources;
- foreach my $src (@sources) {
- my @query = ( "${myself}_table" => $src->meta->table,
- "${myself}_id" => $src->id,
- "${wanted}_table" => \@targets );
- push @new_sources,
- map { $get_objects->($_) }
- grep { !$seen{$_->$sub_wanted_table . $_->$sub_wanted_id} }
- @{ SL::DB::Manager::RecordLink->get_all(query => [ and => \@query ]) };
+ if ($params{via}) {
+ my @sources = ( $self );
+ my @targets = map { SL::DB::Helper::Mappings::get_table_for_package($_) } @{ ref($params{via}) ? $params{via} : [ $params{via} ] };
+ push @targets, @{ $wanted_tables } if $wanted_tables;
+
+ my %seen = map { ($_->meta->table . $_->id => 1) } @sources;
+
+ while (@targets) {
+ my @new_sources = @sources;
+ foreach my $src (@sources) {
+ my @query = ( "${myself}_table" => $src->meta->table,
+ "${myself}_id" => $src->id,
+ "${wanted}_table" => \@targets );
+ push @new_sources,
+ map { $get_objects->($_) }
+ grep { !$seen{$_->$sub_wanted_table . $_->$sub_wanted_id} }
+ @{ SL::DB::Manager::RecordLink->get_all(query => [ and => \@query ]) };
+ }
+
+ @sources = @new_sources;
+ %seen = map { ($_->meta->table . $_->id => 1) } @sources;
+ shift @targets;
}
- @sources = @new_sources;
- %seen = map { ($_->meta->table . $_->id => 1) } @sources;
- shift @targets;
+ my %wanted_tables_map = map { ($_ => 1) } @{ $wanted_tables };
+ return [ grep { $wanted_tables_map{$_->meta->table} } @sources ];
}
- my %wanted_tables_map = map { ($_ => 1) } @{ $wanted_tables };
- return [ grep { $wanted_tables_map{$_->meta->table} } @sources ];
+ # And lastly recursive mode
+ if ($params{recursive}) {
+ # don't use rose retrieval here. too slow.
+ # instead use recursive sql to get all the linked record_links entrys, and retrieve the objects from there
+ my $query = <<"";
+ WITH RECURSIVE record_links_rec_${wanted}(id, from_table, from_id, to_table, to_id, depth, path, cycle) AS (
+ SELECT id, from_table, from_id, to_table, to_id,
+ 1, ARRAY[id], false
+ FROM record_links
+ WHERE ${myself}_id = ? and ${myself}_table = ?
+ UNION ALL
+ SELECT rl.id, rl.from_table, rl.from_id, rl.to_table, rl.to_id,
+ rlr.depth + 1, path || rl.id, rl.id = ANY(path)
+ FROM record_links rl, record_links_rec_${wanted} rlr
+ WHERE rlr.${wanted}_id = rl.${myself}_id AND rlr.${wanted}_table = rl.${myself}_table AND NOT cycle
+ )
+ SELECT DISTINCT ON (${wanted}_table, ${wanted}_id)
+ id, from_table, from_id, to_table, to_id, path, depth FROM record_links_rec_${wanted}
+ WHERE NOT cycle
+ ORDER BY ${wanted}_table, ${wanted}_id, depth ASC;
+
+ my $links = selectall_hashref_query($::form, $::form->get_standard_dbh, $query, $self->id, $self->meta->table);
+
+ return [] unless @$links;
+
+ my $link_objs = SL::DB::Manager::RecordLink->get_all(query => [ id => [ map { $_->{id} } @$links ] ]);
+ my @objects = map { $get_objects->($_) } @$link_objs;
+
+ if ($params{save_path}) {
+ my %links_by_id = map { $_->{id} => $_ } @$links;
+ for (@objects) {
+ my $link = $links_by_id{$_->{_record_link}->id};
+ my $intermediate_links = SL::DB::Manager::RecordLink->get_all(query => [ id => $link->{path} ]);
+ $_->{_record_link_path} = $link->{path};
+ $_->{_record_link_obj_path} = [ map { $get_objects->($_) } @$intermediate_links ];
+ $_->{_record_link_depth} = $link->{depth};
+ }
+ }
+
+ return \@objects;
+ }
}
sub link_to_record {
);
my $link = SL::DB::Manager::RecordLink->find_by(and => [ %data ]);
- push @links, $link ? $link : SL::DB::RecordLink->new(%data)->save unless $link;
+ push @links, $link ? $link : SL::DB::RecordLink->new(%data)->save;
}
return wantarray ? @links : $links[0];
my $today = DateTime->today_local;
my $date_xtor = sub {
- $_[0]->can('transdate_as_date') ? $_[0]->transdate_as_date
- : $_[0]->can('itime_as_date') ? $_[0]->itime_as_date
+ $_[0]->can('transdate_as_date') ? $_[0]->transdate
+ : $_[0]->can('itime_as_date') ? $_[0]->itime->clone->truncate(to => 'day')
: $today;
};
my $date_comparator = sub {
SL::DB::Helper::LinkedRecords - Mixin for retrieving linked records via the table C<record_links>
+SYNOPSIS
+
+ # In SL::DB::<Object>
+ use SL::DB::Helper::LinkedRecords;
+
+ # later in consumer code
+ # retrieve all links in both directions
+ my @linked_objects = $order->linked_records;
+
+ # only links to Invoices
+ my @linked_objects = $order->linked_records(
+ to => 'Invoice',
+ );
+
+ # more than one target
+ my @linked_objects = $order->linked_records(
+ to => [ 'Invoice', 'Order' ],
+ );
+
+ # more than one direction
+ my @linked_objects = $order->linked_records(
+ both => 'Invoice',
+ );
+
+ # more than one direction and different targets
+ my @linked_objects = $order->linked_records(
+ to => 'Invoice',
+ from => 'Order',
+ );
+
+ # via over known classes
+ my @linked_objects = $order->linked_records(
+ to => 'Invoice',
+ via => 'DeliveryOrder',
+ );
+ my @linked_objects = $order->linked_records(
+ to => 'Invoice',
+ via => [ 'Order', 'DeliveryOrder' ],
+ );
+
+ # recursive
+ my @linked_objects = $order->linked_records(
+ recursive => 1,
+ );
+
+
+ # limit direction when further params contain additional keys
+ my %params = (to => 'Invoice', from => 'Order');
+ my @linked_objects = $order->linked_records(
+ direction => 'to',
+ %params,
+ );
+
+ # add a new link
+ $order->link_to_record($invoice);
+ $order->link_to_record($purchase_order, bidirectional => 1);
+
+
=head1 FUNCTIONS
=over 4
=item C<linked_records %params>
-Retrieves records linked from or to C<$self> via the table
-C<record_links>. The mandatory parameter C<direction> (either C<from>,
-C<to> or C<both>) determines whether the function retrieves records
-that link to C<$self> (for C<direction> = C<to>) or that are linked
-from C<$self> (for C<direction> = C<from>). For C<direction = both>
-all records linked from or to C<$self> are returned.
-
-The optional parameter C<from> or C<to> (same as C<direction>)
-contains the package names of Rose models for table limitation (the
-prefix C<SL::DB::> is optional). It can be a single model name as a
-single scalar or multiple model names in an array reference in which
-case all links matching any of the model names will be returned.
-
-The optional parameter C<via> can be used to retrieve all documents
-that may have intermediate documents inbetween. It is an array
-reference of Rose package names for the models that may be
-intermediate link targets. One example is retrieving all invoices for
-a given quotation no matter whether or not orders and delivery orders
-have been created. If C<via> is given then C<from> or C<to> (depending
-on C<direction>) must be given as well, and it must then not be an
+Retrieves records linked from or to C<$self> via the table C<record_links>.
+
+The optional parameter C<direction> (either C<from>, C<to> or C<both>)
+determines whether the function retrieves records that link to C<$self> (for
+C<direction> = C<to>) or that are linked from C<$self> (for C<direction> =
+C<from>). For C<direction = both> all records linked from or to C<$self> are
+returned.
+
+The optional parameter C<from> or C<to> (same as C<direction>) contains the
+package names of Rose models for table limitation (the prefix C<SL::DB::> is
+optional). It can be a single model name as a single scalar or multiple model
+names in an array reference in which case all links matching any of the model
+names will be returned.
+
+If no parameter C<direction> is given, but any of C<to>, C<from> or C<both>,
+then C<direction> is inferred accordingly. If neither are given, C<direction> is
+set to C<both>.
+
+The optional parameter C<via> can be used to retrieve all documents that may
+have intermediate documents inbetween. It is an array reference of Rose package
+names for the models that may be intermediate link targets. One example is
+retrieving all invoices for a given quotation no matter whether or not orders
+and delivery orders have been created. If C<via> is given then C<from> or C<to>
+(depending on C<direction>) must be given as well, and it must then not be an
array reference.
Examples:
If you only need invoices created directly from an order C<$order> (no
delivery orders inbetween) then the call could look like this:
- my $invoices = $order->linked_records(direction => 'to',
- to => 'Invoice');
+ my $invoices = $order->linked_records(
+ direction => 'to',
+ to => 'Invoice',
+ );
Retrieving all invoices from a quotation no matter whether or not
-orders or delivery orders where created:
+orders or delivery orders were created:
- my $invoices = $quotation->linked_records(direction => 'to',
- to => 'Invoice',
- via => [ 'Order', 'DeliveryOrder' ]);
+ my $invoices = $quotation->linked_records(
+ direction => 'to',
+ to => 'Invoice',
+ via => [ 'Order', 'DeliveryOrder' ],
+ );
The optional parameter C<query> can be used to limit the records
returned. The following call limits the earlier example to invoices
created today:
- my $invoices = $order->linked_records(direction => 'to',
- to => 'Invoice',
- query => [ transdate => DateTime->today_local ]);
+ my $invoices = $order->linked_records(
+ direction => 'to',
+ to => 'Invoice',
+ query => [ transdate => DateTime->today_local ],
+ );
+
+In case you don't know or care which or how many objects are visited the flag
+C<recursive> can be used. It searches all reachable objects in the given direction:
+
+ my $records = $order->linked_records(
+ direction => 'to',
+ recursive => 1,
+ );
+
+Only link chains of the same type will be considered. So even with direction
+both, this
+
+ order 1 ---> invoice <--- order 2
+
+started from order 1 will only find invoice. If an object is found both in each
+direction, only one copy will be returned. The recursion is cycle protected,
+and will not recurse infinitely. Cycles are defined by the same link being
+visited twice, so this
+
+
+ order 1 ---> order 2 <--> delivery order
+ |
+ `--------> invoice
+
+will find the path o1 -> o2 -> do -> o2 -> i without considering it a cycle.
+
+The optional extra flag C<save_path> will give you extra information saved in
+the returned objects:
+
+ my $records = $order->linked_records(
+ direction => 'to',
+ recursive => 1,
+ save_path => 1,
+ );
+
+Every record will have two fields set:
+
+=over 2
+
+=item C<_record_link_path>
+
+An array with the ids of the visited links. The shortest paths will be
+preferred, so in the previous example this would contain the ids of o1-o2 and
+o2-i.
+
+=item C<_record_link_depth>
+
+Recursion depth when this object was found. Equal to the number of ids in
+C<_record_link_path>
+
+=back
+
The optional parameters C<$params{sort_by}> and C<$params{sort_dir}>
can be used in order to sort the result. If C<$params{sort_by}> is
created with the roles of C<from> and C<to> reversed. This link will
also only be created if it doesn't exist already.
-In scalar contenxt returns either the existing link or the newly
+In scalar context returns either the existing link or the newly
created one as an instance of C<SL::DB::RecordLink>. In array context
it returns an array of links (one entry if C<$params{bidirectional}>
is falsish and two entries if it is trueish).
=item * C<date>
-Sort by the date the record was created or applies to.
+Sort by the transdate of the record was created or applies to.
-=back
+Note: If the latter has a default setting it will always mask the creation time.
-Returns a hash reference.
+=back
-Can be called both as a class or as an instance function.
+Returns an array reference.
-This function is not exported.
+Can only be called both as a class function since it is not exported.
=back
Nothing here yet.
+=head1 TODO
+
+ * C<recursive> should take a query param depth and cut off there
+ * C<recursive> uses partial distinct which is known to be not terribly fast on
+ a million entry table. replace with a better statement if this ever becomes
+ an issue.
+
=head1 AUTHOR
Moritz Bunkus E<lt>m.bunkus@linet-services.deE<gt>
+Sven Schöling E<lt>s.schoeling@linet-services.deE<gt>
=cut
projects / kivitendo-erp.git / blobdiff