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407
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1 package IMPL::Config::Container;
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412
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2 use strict;
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3
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413
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4 use IMPL::Exception();
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412
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5 use IMPL::lang qw(:base);
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6 use IMPL::declare {
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7 require => {
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8 Descriptor => 'IMPL::Config::Descriptor',
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9 ActivationContext => 'IMPL::Config::ActivationContext',
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10 Hierarchy => 'IMPL::Config::Hierarchy',
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415
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11 Bag => 'IMPL::Config::Bag',
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12 Loader => 'IMPL::Code::Loader'
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412
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13 },
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14 base => [
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15 'IMPL::Object' => undef
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16 ],
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17 props => [
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18 roles => 'r',
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19 services => 'r',
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20 instances => 'r',
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21 parent => 'r',
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22 root => 'r',
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23 loader => 'r'
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24 ]
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25 };
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26
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27 my $nextRoleId = 1;
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28
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413
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29 sub CTOR {
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415
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30 my ( $this, $parent, %opts ) = @_;
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413
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31
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32 $this->instances( {} );
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33
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34 $this->loader( $opts{loader} || Loader->safe );
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35
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413
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36 if ($parent) {
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37 $this->roles( Hierarchy->new( $parent->roles ) );
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38 $this->services( Bag->new( $parent->services ) );
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39 $this->parent($parent);
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40 $this->root( $parent->root );
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413
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41 }
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42 else {
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43 $this->roles( Hierarchy->new() );
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44 $this->services( Bag->new() );
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45 $this->root($this);
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413
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46 }
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47 }
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412
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48
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417
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49 sub Require {
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50 my ($this, $class) = @_;
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51
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52 return $this->loader->Require($class);
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53 }
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54
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412
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55 sub Register {
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413
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56 my ( $this, $role, $service ) = @_;
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57
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58 die IMPL::InvalidArgumentException->new('service')
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59 unless is( $service, Descriptor );
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60 $this->services->Register( $this->GetLinearRoleHash($role), $service );
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61 }
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62
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63 sub GetLinearRoleHash {
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64 my ( $this, $role ) = @_;
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65
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413
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66 die IMPL::InvalidArgumentException->new(
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67 role => 'The argument is required' )
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68 unless $role;
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69
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70 if ( isarray($role) ) {
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71 my $tempRole = "unnamed-" . $nextRoleId++;
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417
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72 $this->roles->AddRole( $tempRole, $role );
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413
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73 $role = $tempRole;
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412
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74 }
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413
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75
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76 $this->roles->GetLinearRoleHash($role);
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413
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77 }
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78
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79 sub Resolve {
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80 my ( $this, $role, %opts ) = @_;
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81
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82 my $descriptor = $this->services->Resolve($role);
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83
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84 return $descriptor->Activate( ActivationContext->new($this) )
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417
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85 if $descriptor;
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413
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86
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87 return $opts{default} if exists $opts{default};
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88 }
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89
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90 sub ResolveAll {
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91 my ( $this, $role, %opts ) = @_;
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92
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93 my $all = $this->services->ResolveAll($role);
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94
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95 my $context;
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96
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97 my @result;
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98
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99 foreach my $service (@$all) {
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100 $context = ActivationContext->new($this)
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101 unless $context || $opts{shared};
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102
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103 push @result, $service->Activate($context);
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104 }
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105
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106 return \@result;
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412
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107 }
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407
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108
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418
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109
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407
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110 1;
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111
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112 __END__
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113
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114 =pod
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115
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116 =head1 NAME
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117
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118 C<IMPL::Config::Container> - dependency injection container
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119
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120 =head1 SYNOPSIS
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121
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122 =head2 METHODS
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123
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124 =head3 Resolve($role)
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125
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415
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126 =head3 ResolveAll($role, shared => $useSharedContext)
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127
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415
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128 =head3 Register($role, $service)
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129
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130 =cut
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