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annotate lib/IMPL/Config/ServiceDescriptor.pm @ 424:87af445663d7 ref20150831

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IMPL::Object::_Base
author cin
date Tue, 03 Apr 2018 10:54:09 +0300
parents b0481c071bea
children
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1 package IMPL::Config::ServiceDescriptor;
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2 use strict;
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3
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4 use IMPL::lang qw(:base);
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5 use IMPL::Exception();
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6 use IMPL::declare {
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7 require => {
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8 Bag => 'IMPL::Config::Bag',
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9 ActivationException => 'IMPL::Config::ActivationException'
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10 },
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11 base => [
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12 'IMPL::Object' => undef,
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13 'IMPL::Config::Descriptor' => undef
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14 ],
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15 props => [
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16 type => 'r',
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17 activation => 'r',
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18 args => 'r',
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19 services => 'r',
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20 norequire => 'r',
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21 _name => 'rw',
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22 _loaded => 'rw'
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23 ]
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24 };
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25
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26 sub CTOR {
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27 my ( $this, %opts ) = @_;
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28
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29 $this->type( $opts{type} )
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30 or die IMPL::InvalidArgumentException->new('type');
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31
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32 $this->activation( SELF->ParseActivation( $opts{activation} ) );
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33 $this->args( $opts{args} ) if exists $opts{args};
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34 $this->services( $opts{services} ) if exists $opts{services};
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35 $this->norequire( $opts{norequire} ) if exists $opts{norequire};
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36
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37 $this->_name( 'new {'
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38 . SELF->ActivationToString( $this->activation ) . '} '
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39 . $this->type );
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40 }
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41
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42 sub Activate {
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43 my ( $this, $context) = @_;
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44
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45 my $instance;
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46 my $activation = $this->activation;
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47 my $cache;
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48
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49 if ( $activation == SELF->ACTIVATE_SINGLETON ) {
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50 $cache = $context->container->root->instances;
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51 }
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52 elsif ( $activation == SELF->ACTIVATE_CONTAINER ) {
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53 $cache = $context->container->instances;
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54 }
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55 elsif ( $activation == SELF->ACTIVATE_HIERARCHY ) {
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56 $cache = $context->owner->instances;
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57 }
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58 elsif ( $activation == SELF->ACTIVATE_CONTEXT ) {
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59 $cache = $context->instances;
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60 }
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61
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62 $instance = $cache->{ ref($this) } if $cache;
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63 unless ($instance) {
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64 $instance = $this->CreateInstance($context);
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65 $cache->{ ref($this) } = $instance if $cache;
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66 }
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67
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68 return $instance;
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69 }
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70
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71 sub CreateInstance {
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72 my ( $this, $context) = @_;
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73
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74 my $class =
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75 $this->norequire
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76 ? $this->type
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77 : $context->container->Require( $this->type );
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78
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79
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80 # determine how to pass arguments
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81 if (isarray($this->args)) {
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82 # if args is an array ref, pass it as list
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83 return $class->new(map $context->Activate($_), @{$this->args});
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84 } elsif (ishash($this->args)) {
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85 # if args is a hash ref, pass it as list
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86 my %args;
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87 while(my ($k,$v) = each %{$this->args}) {
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88 $args{$k} = $context->Activate($v);
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89 }
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90 return $class->new(%args);
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91 } elsif(defined $this->args) {
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92 # otherwise pass it as a single argument
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93 return $class->new($context->Activate($this->args));
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94 } else {
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95 return $class->new();
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96 }
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97 }
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98
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99 sub GetName {
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100 shift->_name;
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101 }
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102
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103 1;