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1 package IMPL::Config::Class;
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2 use strict;
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3 use warnings;
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4
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5 use base qw(IMPL::Config);
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6 use IMPL::Exception;
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7 use IMPL::Class::Property;
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8
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9 BEGIN {
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10 public property Type => prop_all;
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11 public property Parameters => prop_all;
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12 public property IsSingleton => prop_all;
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13 private property _Instance => prop_all;
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14 }
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15
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16 __PACKAGE__->PassThroughArgs;
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17
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18 sub CTOR {
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19 my $this = shift;
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20
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21 die new IMPL::Exception("A Type parameter is required") unless $this->Type;
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22
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23 }
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24
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25 sub _is_class {
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26 no strict 'refs';
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27 scalar keys %{"$_[0]::"} ? 1 : 0;
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28 }
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29
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30 sub instance {
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31 my $this = shift;
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32
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33 my $type = $this->Type;
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34
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35 if ($this->IsSingleton) {
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36 if ($this->_Instance) {
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37 return $this->_Instance;
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38 } else {
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39 my %args = (%{$this->Parameters || {}},@_);
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40 eval "require $type" unless _is_class($type);
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41 my $inst = $type->new(%args);
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42 $this->_Instance($inst);
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43 return $inst;
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44 }
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45 } else {
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46 my %args = (%{$this->Parameters || {}},@_);
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47 eval "require $type" unless _is_class($type);
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48 return $type->new(%args);
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49 }
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50 }
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51
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52 1;
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