/[cvs]/nfo/perl/libs/Data/Mungle/Transform/Deep.pm
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revision 1.10 by joko, Thu Feb 20 20:48:00 2003 UTC revision 1.14 by jonen, Sat Feb 22 17:13:55 2003 UTC
# Line 2  Line 2 
2  ##  $Id$  ##  $Id$
3  ## ---------------------------------------------------------------------------  ## ---------------------------------------------------------------------------
4  ##  $Log$  ##  $Log$
5    ##  Revision 1.14  2003/02/22 17:13:55  jonen
6    ##  + added function 'childObject2string()' to encode 'child'-references to option related string
7    ##  + use new option at 'expand()' for replacing 'childObject2string'
8    ##
9    ##  Revision 1.13  2003/02/21 01:48:50  joko
10    ##  renamed core function
11    ##
12    ##  Revision 1.12  2003/02/20 22:45:19  joko
13    ##  fix regarding new deep_copy
14    ##
15    ##  Revision 1.11  2003/02/20 21:13:54  joko
16    ##  - removed implementation of deep_copy2 - get this from the Pitonyak namespace (now cloned to repository)
17    ##
18  ##  Revision 1.10  2003/02/20 20:48:00  joko  ##  Revision 1.10  2003/02/20 20:48:00  joko
19  ##  - refactored lots of code to Data::Code::Ref  ##  - refactored lots of code to Data::Code::Ref
20  ##  + alternative 'deep_copy' implementation  ##  + alternative 'deep_copy' implementation
# Line 58  use attributes; Line 71  use attributes;
71  use Data::Dumper;  use Data::Dumper;
72  use Iterate;  use Iterate;
73    
74    use Pitonyak::DeepCopy;
75  use Data::Transform::Encode qw( latin_to_utf8 latin_to_utf8_scalar utf8_to_latin utf8_to_latin_scalar );  use Data::Transform::Encode qw( latin_to_utf8 latin_to_utf8_scalar utf8_to_latin utf8_to_latin_scalar );
76  use Data::Code::Ref qw( ref_slot );  use Data::Code::Ref qw( ref_slot );
77    
# Line 129  sub _var_deref_test { Line 143  sub _var_deref_test {
143  }  }
144    
145    
146    # convert values in hash to utf8 (and back) to be ready for (e.g.) encapsulation in XML
147    # but still using the known latin locale stuff
148  sub expand {  sub expand {
149    
150    my $obj = shift;    my $obj = shift;
# Line 143  sub expand { Line 159  sub expand {
159        my $item;        my $item;
160        # if current item is a reference ...        # if current item is a reference ...
161        if (ref $_[0]) {        if (ref $_[0]) {
162          # ... expand structure recursively          $item = $_[0];
163          $item = expand($_[0], $options);          # if $options->{childObj2string} is TRUE or STRING don't expand referenced object,
164            # instead replace it by per option choosed string (default: o_<classname>_<ref type>_<guid> )
165            if ($item && $options->{childObj2string}) {
166              $item = childObj2string($item, $options->{childObj2string});
167            } else {
168              # ... expand structure recursively
169              $item = expand($_[0], $options);
170            }
171          # destroy item via seperate callback method (a POST) if requested          # destroy item via seperate callback method (a POST) if requested
172          #$options->{cb}->{destroy}->($_[0]) if $options->{destroy};          #$options->{cb}->{destroy}->($_[0]) if $options->{destroy};
173    
# Line 173  sub expand { Line 196  sub expand {
196                
197        # if current item is a reference ...        # if current item is a reference ...
198        if (ref $_[1]) {        if (ref $_[1]) {
199          # ... expand structure recursively          $item = $_[1];
200          $item = expand($_[1], $options);          # if $options->{childObj2string} is TRUE or STRING don't expand referenced object,
201            # instead replace it by per option choosed string (default: o_<classname>_<ref type>_<guid> )
202            if ($item && $options->{childObj2string} && !(ref $_[1] eq "ARRAY") && !(ref $_[1] eq "HASH")) {
203              $item = childObj2string($item, $options->{childObj2string});
204            } else {
205              # ... expand structure recursively
206              $item = expand($_[1], $options);
207            }
208          # destroy item via seperate callback method (a POST) if requested          # destroy item via seperate callback method (a POST) if requested
209          #$options->{cb}->{destroy}->($_[1]) if $options->{destroy};          #$options->{cb}->{destroy}->($_[1]) if $options->{destroy};
210                
# Line 198  sub expand { Line 228  sub expand {
228    
229    # convert all values to utf8 (inside complex struct)    # convert all values to utf8 (inside complex struct)
230      # now done in core-item-callbacks via Greg London's "Iterate" from CPAN      # now done in core-item-callbacks via Greg London's "Iterate" from CPAN
231      # var2utf8($result) if ($options->{utf8});      # latin_to_utf8($result) if ($options->{utf8});
232    
233    # destroy persistent object from memory to be sure to get a fresh one next time    # destroy persistent object from memory to be sure to get a fresh one next time
234    #undef $obj if $options->{destroy};    #undef $obj if $options->{destroy};
# Line 441  sub deep_copy1 { Line 471  sub deep_copy1 {
471  # ACK's go to Andrew Pitonyak  # ACK's go to Andrew Pitonyak
472  # Copyright 2002, Andrew Pitonyak (perlboy@pitonyak.org)  # Copyright 2002, Andrew Pitonyak (perlboy@pitonyak.org)
473  # please visit: http://www.pitonyak.org/code/perl/Pitonyak/DeepCopy.pm.html  # please visit: http://www.pitonyak.org/code/perl/Pitonyak/DeepCopy.pm.html
474  sub deep_copy2 {  sub deep_copy {
475      Pitonyak::DeepCopy::deep_copy(@_);
476      # if not defined then return it  }
     return undef if $#_ < 0 || !defined( $_[0] );  
   
     # if not a reference then return the parameter  
     return $_[0] if !ref( $_[0] );  
     my $obj = shift;  
     if ( UNIVERSAL::isa( $obj, 'SCALAR' ) ) {  
         my $temp = deep_copy2($$obj);  
         return \$temp;  
     }  
     elsif ( UNIVERSAL::isa( $obj, 'HASH' ) ) {  
         my $temp_hash = {};  
         foreach my $key ( keys %$obj ) {  
             if ( !defined( $obj->{$key} ) || !ref( $obj->{$key} ) ) {  
                 $temp_hash->{$key} = $obj->{$key};  
             }  
             else {  
                 $temp_hash->{$key} = deep_copy2( $obj->{$key} );  
             }  
         }  
         return $temp_hash;  
     }  
     elsif ( UNIVERSAL::isa( $obj, 'ARRAY' ) ) {  
         my $temp_array = [];  
         foreach my $array_val (@$obj) {  
             if ( !defined($array_val) || !ref($array_val) ) {  
                 push ( @$temp_array, $array_val );  
             }  
             else {  
                 push ( @$temp_array, deep_copy2($array_val) );  
             }  
         }  
         return $temp_array;  
     }  
477    
     # ?? I am uncertain about this one  
     elsif ( UNIVERSAL::isa( $obj, 'REF' ) ) {  
         my $temp = deep_copy2($$obj);  
         return \$temp;  
     }  
478    
479      # I guess that it is either CODE, GLOB or LVALUE  sub childObj2string {
480      else {    my $obj = shift;
481          return $obj;    my $option = shift;
482      }    my $classname = ref $obj;
483      
484      if($option == 1) {
485        my $string = "o_" . $classname . "_" .$obj->{guid};
486        return $string;
487      }  
488  }  }
489    
 sub deep_copy {  
   deep_copy2(@_);  
 }  
490    
491  1;  1;
492  __END__  __END__
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