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package XML::ExtOn::TieAttrs; |
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=head1 NAME |
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XML::ExtOn::TieAttrs |
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=head1 SYNOPSIS |
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use XML::ExtOn::TieAttrs; |
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tie %hasha, 'XML::ExtOn::TieAttrs', \%hash1, default=>; |
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=head1 DESCRIPTION |
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=cut |
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88275
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use strict; |
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use warnings; |
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use strict; |
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use Carp; |
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use Data::Dumper; |
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2149
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require Tie::Hash; |
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@XML::ExtOn::TieAttrs::ISA = qw(Tie::StdHash); |
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$XML::ExtOn::TieAttrs::VERSION = '0.01'; |
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sub attr_from_sax2 { |
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my $sax_attr = shift || {}; |
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my %res = (); |
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while ( my ( $key, $value ) = each %$sax_attr ) { |
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my ( $prefix, $name, $ns_uri ) = |
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@{$value}{qw/ Prefix LocalName NamespaceURI/}; |
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$prefix = '' unless defined $prefix; |
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$ns_uri = '' unless defined $ns_uri; |
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$res{qq/{$ns_uri}$name/} = {%$value}; |
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} |
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return \%res; |
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} |
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my $attrs = { |
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__temp_array => [], |
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_orig_hash => {}, |
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_default => undef, |
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_template => {}, |
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}; |
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### install get/set accessors for this object. |
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for my $key ( keys %$attrs ) { |
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no strict 'refs'; |
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10615
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*{ __PACKAGE__ . "::$key" } = sub { |
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my $self = shift; |
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$self->{$key} = $_[0] if @_; |
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return $self->{$key}; |
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} |
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} |
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=head2 new |
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tie %hasha, 'XML::ExtOn::TieAttrs', \%hash1, default=>; |
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=cut |
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sub new { |
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1
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my $class = shift; |
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$class = ref $class if ref $class; |
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my $orig_hash = shift || {}; |
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my %props = @_; |
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my $self = bless( \%props, $class ); |
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$self->_orig_hash($orig_hash); |
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#set filters by |
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100
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my $field_name = $props{by} || 'Name'; |
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my $value = $props{value} || ''; |
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$self->_default( [ $field_name, $value ] ); |
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#setup template |
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$self->_template( $props{template} || {} ); |
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return $self; |
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} |
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sub get_by_filter { |
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my $self = shift; |
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my $flocal_name = shift; |
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my $ahash = $self->_orig_hash; |
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my %res = (); |
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my ( $field_name, $value ) = @{ $self->_default() }; |
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my $i = -1; |
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foreach my $val (@$ahash) { |
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$i++; |
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next unless defined( $val->{$field_name} ); |
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next unless $val->{$field_name} eq $value; |
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next if defined $flocal_name && $val->{LocalName} ne $flocal_name; |
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$res{$i} = $val; |
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} |
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return \%res; |
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} |
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sub create_attr { |
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0
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my $self = shift; |
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my $key = shift; |
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my %template = |
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( %{ $self->_template() }, @{ $self->_default() }, LocalName => $key ); |
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104
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my $prefix = $template{Prefix}; |
105
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my $local_name = $template{LocalName}; |
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100
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$template{Name} = $prefix ? "$prefix:$local_name" : $local_name; |
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return attr_from_sax2( { 1 => \%template } ); |
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} |
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sub DELETE { |
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my ( $self, $key ) = @_; |
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my ( $fkey, $fhash ) = %{ $self->get_by_filter($key) }; |
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113
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return unless $fhash; |
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my $val = $fhash->{Value}; |
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my $ahash = $self->_orig_hash; |
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5
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delete $ahash->[$fkey]; |
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@{$ahash} = grep { defined } @{$ahash}; |
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19
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30
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10
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118
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return $val; |
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} |
120
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121
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sub STORE { |
122
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12
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820
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my ( $self, $key, $val ) = @_; |
123
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# warn " store: $key, $val "; |
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my ( $pkey, $fhash ) = %{ $self->get_by_filter($key) }; |
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31
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125
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100
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30
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if ($fhash) { |
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6
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$fhash->{Value} = $val; |
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} |
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else { |
129
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6
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my $new_add_to_hash = $self->create_attr($key); |
130
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my $ahash = $self->_orig_hash; |
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while ( my ( $pkey, $pval ) = each %$new_add_to_hash ) { |
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6
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push @{$ahash}, $pval; |
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133
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} |
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$self->STORE( $key, $val ); |
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} |
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return $val; |
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} |
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139
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sub FETCH { |
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my ( $self, $key ) = @_; |
141
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23
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22
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my $res; |
142
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23
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my ( $pkey, $pval ) = %{ $self->get_by_filter($key) }; |
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41
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143
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$res = $pval->{Value} if $pval; |
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return $res; |
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} |
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147
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sub GetKeys { |
148
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0
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my $self = shift; |
149
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return [ map { $_->{LocalName} } values %{ $self->get_by_filter } ]; |
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53
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15
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150
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} |
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152
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sub TIEHASH { #shift; |
153
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5
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5
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1768
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return &new(@_); |
154
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} |
155
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156
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sub FIRSTKEY { |
157
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10
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10
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1799
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my ($self) = @_; |
158
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10
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13
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$self->__temp_array( [ sort { $a cmp $b } @{ $self->GetKeys() } ] ); |
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46
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10
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26
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159
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shift( @{ $self->__temp_array() } ); |
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160
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} |
161
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162
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sub NEXTKEY { |
163
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25
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36
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my ( $self, $key ) = @_; |
164
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25
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shift( @{ $self->__temp_array() } ); |
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25
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37
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165
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} |
166
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167
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sub EXISTS { |
168
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23
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23
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247
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my ( $self, $key ) = @_; |
169
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23
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my ( $pkey, $pval ) = %{ $self->get_by_filter($key) }; |
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23
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46
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170
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23
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81
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return defined $pval; |
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} |
172
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173
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sub CLEAR { |
174
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1
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1
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428
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my $self = shift; |
175
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1
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3
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foreach my $key ( @{ $self->GetKeys } ) { |
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1
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4
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176
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3
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8
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$self->DELETE($key); |
177
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} |
178
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} |
179
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180
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1; |
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__END__ |