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view Lib/IMPL/Object/Factory.pm @ 171:59e5fcb59d86

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Исправления, изменена концепция веб-форм
author sourcer
date Mon, 06 Jun 2011 03:30:36 +0400
parents 4267a2ac3d46
children d1676be8afcc
line wrap: on
line source

package IMPL::Object::Factory;
use strict;

use parent qw(IMPL::Object IMPL::Object::Serializable);

use IMPL::Class::Property;

BEGIN {
	public property factory => prop_get | owner_set;
	public property parameters => prop_get | owner_set;
	public property method => prop_get | owner_set; 
}

# custom factory, overrides default
sub new {
	my $self = shift;
	
	return ref $self ? $self->CreateObject(@_) : $self->IMPL::Object::new(@_);
}

sub CTOR {
	my ($this,$factory,$parameters,$method) = @_;
	
	$this->factory($factory) or die new IMPL::InvalidArgumentException("The argument 'factory' is mandatory");
	$this->parameters($parameters) if $parameters;
	$this->method($method) if $method;
}

# override default restore method
sub restore {
	my ($class,$data,$surrogate) = @_;
	
	my %args = @$data;
	
	if ($surrogate) {
		$surrogate->callCTOR($args{factory},$args{parameters},$args{method});
		return $surrogate;
	} else {
		return $class->new($args{factory},$args{parameters},$args{method});
	}
}

sub CreateObject {
	my $this = shift;
	
	if (my $method = $this->method) {
		$this->factory->$method($this->parameters ? (_as_list($this->parameters),@_) : @_);	
	} else {
		$this->factory->new($this->parameters ? (_as_list($this->parameters),@_) : @_);		
	}
}

sub _as_list {
	ref $_[0] ?
		(ref $_[0] eq 'HASH' ?
			%{$_[0]}
			:
			(ref $_[0] eq 'ARRAY'?
				@{$_[0]}
				:
				$_[0]
			)
		)
		:
		($_[0]);
}


1;

__END__

=pod

=head1 SYNOPSIS

=begin code

my $factory = new IMPL::Object::Factory(
	'MyApp::User',
	{
		isAdmin => 1
	}
);

my $class = 'MyApp::User';

my $user;

$user = $class->new(name => 'nobody'); # will create object MyApp::User
                                       # and pass parameters (name=>'nobody')
											
$user = $factory->new(name => 'root'); # will create object MyApp::User
                                       # and pass paremeters (isAdmin => 1, name => 'root')

=end code

    XML.

=begin code xml

<factory type="IMPL::Object::Factory">
	<factory>MyApp::User</factory>,
	<parameters type="HASH">
		<isAdmin>1</isAdmin>
	</parameters>
</factory>

=end code xml

=head1 DESCRIPTION

C<[Serializable]>

,   .

    ,    C< new >      
.      , ,     
C< new >,    .  ,     Perl, 
 ,  ,   .

     C< new >     : 
   .    C< new >     
   .  -     
     .

=head1 MEMBERS

=over

=item C< CTOR($factory,$parameters,$method) >

   .

=over

=item C<$factory>

  ,   .

=item C<$parameters>

     ,     ,   ..

    ,        
        C<new>.

    ,        
        C<new>.

      ,     
C<new>  .

=item C<$method>

  (   ),     C<$factory>  
   .

=back

=item C< [get] factory >

,        .    
 .

=item C< [get] parameters >

,       ,      
      C< new >    C< factory >,   
    .

=item C<new(@params)>

  ,   C<factory>      
  C<parameters>   C<@params>.    ,   .

=begin code

sub new {
	my ($this,@params) = @_;
	
	my $method = $this->method || 'new';
	
	return $this->factory->$method(_as_list($this->parameters), @params);
}

=end code

=back

=cut