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Result.pm
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Result.pm
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package Brick::Result;
use strict;
use vars qw($VERSION);
use Carp qw(carp croak);
$VERSION = '0.903';
=encoding utf8
=head1 NAME
Brick::Result - the result of applying a profile
=head1 SYNOPSIS
use Brick;
my $result = $brick->apply( $Profile, $Input );
$result->explain;
=head1 DESCRIPTION
This class provides methods to turn the data structure returned
by apply() into a useable form for particular situations.
=head2 Class methods
=over 4
=item result_item_class
Loads and returns the class name to use for the elements of the Results
data structure.
=cut
sub result_item_class { require Brick::Result::Item; 'Brick::Result::Item' };
=back
=head2 Instance methods
=over
=item explain
Create a string the shows the result in an outline form.
=cut
# for the $pair thing in explain
use constant LEVEL => 0;
use constant MESSAGE => 1;
sub explain {
my( $result_set ) = @_;
my $str = '';
foreach my $element ( @$result_set ) {
my $level = 0;
$str .= "$$element[0]: " . do {
if( $element->passed ) { "passed " }
elsif( $element->is_validation_error ) { "failed " }
elsif( $element->is_code_error ) { "code error in " }
};
$str .= $element->get_method() . "\n";
if( $element->passed ) {
$str .= "\n";
next;
}
# this descends into the error tree (without using recursion
my @uses = ( [ $level, $element->get_messages ] );
while( my $pair = shift @uses ) {
# is it a single error or a composition?
if( ! ref $pair->[ MESSAGE ] ) {
$str .= $pair->[ MESSAGE ] . "foo";
}
elsif( ! ref $pair->[ MESSAGE ] eq ref {} ) {
next;
}
elsif( exists $pair->[ MESSAGE ]->{errors} ) {
# something else to process, but put it back into @uses
unshift @uses, map {
[ $pair->[ LEVEL ] + 1, $_ ]
} @{ $pair->[ MESSAGE ]->{errors} };
}
else {
# this could come back as an array ref instead of a string
no warnings 'uninitialized';
$str .= "\t" . #x $pair->[ LEVEL ] .
join( ": ", @{ $pair->[ MESSAGE ]
}{qw(failed_field handler message)} ) . "\n";
}
}
$str.= "\n";
}
$str;
}
=item flatten
Collapse the result structure to an array of flat hashes.
=cut
sub flatten {
my( $result_set ) = @_;
my $str = '';
my @flatten;
foreach my $element ( @$result_set ) { # one element per profile element
bless $element, $result_set->result_item_class;
next if $element->passed;
my $constraint = $element->get_method;
my @uses = ( $element->get_messages );
while( my $hash = shift @uses ) {
if( ! ref $hash eq ref {} ) {
carp "Non-hash reference in messages result key! Skipping";
next;
}
# is it a single error or a composition?
unless( ref $hash ) {
next;
}
elsif( exists $hash->{errors} ) {
unshift @uses, @{ $hash->{errors} };
}
else {
push @flatten, { %$hash, constraint => $constraint };
}
}
}
\@flatten;
}
=item flatten_by_field
Similar to flatten, but keyed by the field that failed the constraint.
=cut
sub flatten_by_field {
my( $result_set ) = @_;
my $str = '';
my %flatten;
my %Seen;
foreach my $element ( @$result_set ) { # one element per profile element
next if $element->passed;
my $constraint = $element->get_method;
my @uses = ( $element->get_messages );
while( my $hash = shift @uses ) {
# is it a single error or a composition?
unless( ref $hash ) {
next;
}
elsif( exists $hash->{errors} ) {
unshift @uses, @{ $hash->{errors} };
}
else {
my $field = $hash->{failed_field};
next if $hash->{handler} and $Seen{$field}{$hash->{handler}}++;
$flatten{ $field } = [] unless exists $flatten{ $field };
push @{ $flatten{ $field } },
{ %$hash, constraint => $constraint };
$Seen{$field}{$hash->{handler}}++;
}
}
}
\%flatten;
}
=item flatten_by
Similar to flatten, but keyed by the hash key named in the argument list.
=cut
sub flatten_by {
my( $result_set, $key ) = @_;
my $str = '';
my %flatten;
my %Seen;
foreach my $element ( @$result_set ) { # one element per profile element
next if $element->passed;
my $constraint = $element->get_method;
my @uses = ( $element->get_messages );
while( my $hash = shift @uses ) {
# is it a single error or a composition?
unless( ref $hash ) {
next;
}
elsif( exists $hash->{errors} ) {
unshift @uses, @{ $hash->{errors} };
}
else {
my $field = $hash->{$key};
next if $hash->{handler} and $Seen{$field}{$hash->{handler}}++;
$flatten{ $field } = [] unless exists $flatten{ $field };
push @{ $flatten{ $field } },
{ %$hash, constraint => $constraint };
$Seen{$field}{$hash->{handler}}++;
}
}
}
\%flatten;
}
=item dump
What should this do?
=cut
sub dump { croak "Not yet implemented" }
=back
=head1 TO DO
TBA
=head1 SEE ALSO
L<Brick::Tutorial>, L<Brick::UserGuide>
=head1 SOURCE AVAILABILITY
This source is in Github:
https://github.com/briandfoy/brick
=head1 AUTHOR
brian d foy, C<< <briandfoy@pobox.com> >>
=head1 COPYRIGHT
Copyright © 2007-2024, brian d foy <briandfoy@pobox.com>. All rights reserved.
You may redistribute this under the terms of the Artistic License 2.0.
=cut
1;