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############################################## |
## --------------------------------------------------------------------------- |
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## $Id$ |
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# $Id$ |
## --------------------------------------------------------------------------- |
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## $Log$ |
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# $Log$ |
## Revision 1.16 2003/03/27 15:04:52 joko |
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# Revision 1.4 2002/12/05 13:56:49 joko |
## minor update: comment |
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# - var_deref |
## |
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# + expand - more sophisticated dereferencing with callbacks using Iterate |
## Revision 1.15 2003/02/27 14:39:48 jonen |
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# |
## + fixed bug at _hash2object() |
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# Revision 1.3 2002/12/03 05:34:55 joko |
## |
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# + bugfix: now utilizing var_utf2iso from Data::Transform::Encode |
## Revision 1.14 2003/02/22 17:13:55 jonen |
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# |
## + added function 'childObject2string()' to encode 'child'-references to option related string |
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# Revision 1.2 2002/12/01 04:44:07 joko |
## + use new option at 'expand()' for replacing 'childObject2string' |
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# + code from Data::Transform::OO |
## |
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# |
## Revision 1.13 2003/02/21 01:48:50 joko |
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# Revision 1.1 2002/11/29 04:49:20 joko |
## renamed core function |
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# + initial check-in |
## |
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# |
## Revision 1.12 2003/02/20 22:45:19 joko |
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# Revision 1.1 2002/10/10 03:26:00 cvsjoko |
## fix regarding new deep_copy |
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# + new |
## |
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# |
## Revision 1.11 2003/02/20 21:13:54 joko |
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############################################## |
## - removed implementation of deep_copy2 - get this from the Pitonyak namespace (now cloned to repository) |
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## |
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## Revision 1.10 2003/02/20 20:48:00 joko |
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## - refactored lots of code to Data::Code::Ref |
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## + alternative 'deep_copy' implementation |
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## |
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## Revision 1.9 2003/02/18 19:35:56 joko |
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## +- modified 'sub refexpr2perlref': now can get the $delimiter passed, too |
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## |
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## Revision 1.8 2003/02/09 05:10:56 joko |
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## + minor update |
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## |
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## Revision 1.7 2003/01/19 03:26:59 joko |
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## + added 'sub deep_copy' - refactored from libp |
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## + add 'sub merge' - exported from CPAN's 'Hash::Merge' |
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## |
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## Revision 1.6 2002/12/23 11:27:53 jonen |
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## + changed behavior WATCH! |
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## |
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## Revision 1.5 2002/12/16 19:57:54 joko |
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## + option 'init' |
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## |
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## Revision 1.4 2002/12/05 13:56:49 joko |
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## - var_deref |
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## + expand - more sophisticated dereferencing with callbacks using Iterate |
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## |
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## Revision 1.3 2002/12/03 05:34:55 joko |
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## + bugfix: now utilizing var_utf2iso from Data::Transform::Encode |
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## |
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## Revision 1.2 2002/12/01 04:44:07 joko |
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## + code from Data::Transform::OO |
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## |
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## Revision 1.1 2002/11/29 04:49:20 joko |
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## + initial check-in |
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## |
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## Revision 1.1 2002/10/10 03:26:00 cvsjoko |
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## + new |
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## --------------------------------------------------------------------------- |
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package Data::Transform::Deep; |
package Data::Transform::Deep; |
67 |
require Exporter; |
require Exporter; |
68 |
our @ISA = qw( Exporter ); |
our @ISA = qw( Exporter ); |
69 |
our @EXPORT_OK = qw( |
our @EXPORT_OK = qw( |
|
&var_NumericalHashToArray |
|
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&var_mixin |
|
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&object2hash |
|
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&hash2object |
|
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&refexpr2perlref |
|
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&expand |
&expand |
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&deep_copy |
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&merge_to |
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); |
); |
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# &var_deref |
|
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# &getStructSlotByStringyAddress |
|
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|
|
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use attributes; |
use attributes; |
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use Data::Dumper; |
use Data::Dumper; |
|
use Data::Transform::Encode qw( var_utf2iso var2utf8 scalar2utf8 ); |
|
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use libp qw( deep_copy ); |
|
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use Iterate; |
use Iterate; |
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|
|
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sub var_NumericalHashToArray { |
use Pitonyak::DeepCopy; |
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use Data::Transform::Encode qw( latin_to_utf8 latin_to_utf8_scalar utf8_to_latin utf8_to_latin_scalar ); |
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use Data::Code::Ref qw( ref_slot ); |
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|
|
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sub numhash2list { |
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my $vref = shift; |
my $vref = shift; |
86 |
#my $context = shift; |
#my $context = shift; |
87 |
if (ref $vref eq 'HASH') { |
if (ref $vref eq 'HASH') { |
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} |
} |
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$vref->{$_} = \@arr; |
$vref->{$_} = \@arr; |
99 |
} |
} |
100 |
var_NumericalHashToArray($vref->{$_}); |
numhash2list($vref->{$_}); |
101 |
} |
} |
102 |
# } else { |
# } else { |
103 |
# #$vref->{$_} = scalar2iso($vref->{$_}); |
# #$vref->{$_} = scalar2iso($vref->{$_}); |
107 |
} |
} |
108 |
|
|
109 |
|
|
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sub var_deref { |
# FIXME: could this be refactored using expand? |
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# btw: "expand": look at scripts@CPAN (System Administration): |
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# there is a perl make with perl |
113 |
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sub _var_deref_test { |
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my $obj = shift; |
my $obj = shift; |
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my $options = shift; |
my $options = shift; |
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my $result; |
my $result; |
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} |
} |
150 |
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# convert values in hash to utf8 (and back) to be ready for (e.g.) encapsulation in XML |
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# but still using the known latin locale stuff |
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sub expand { |
sub expand { |
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|
|
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my $obj = shift; |
my $obj = shift; |
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my $options = shift; |
my $options = shift; |
158 |
my $result; |
my $result; |
159 |
|
|
160 |
if ((ref $obj) eq 'ARRAY') { |
#print "ref: ", ref $obj, "\n"; |
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|
|
162 |
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if (ref $obj eq 'ARRAY') { |
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|
|
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IterArray @$obj, sub { |
IterArray @$obj, sub { |
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my $item; |
my $item; |
166 |
# if current item is a reference ... |
# if current item is a reference ... |
167 |
if (ref $_[0]) { |
if (ref $_[0]) { |
168 |
# ... expand structure recursively |
$item = $_[0]; |
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$item = expand($_[0], $options); |
# if $options->{childObj2string} is TRUE or STRING don't expand referenced object, |
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|
# instead replace it by per option choosed string (default: o_<classname>_<ref type>_<guid> ) |
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if ($item && $options->{childObj2string}) { |
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$item = childObj2string($item, $options->{childObj2string}); |
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} else { |
174 |
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# ... expand structure recursively |
175 |
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$item = expand($_[0], $options); |
176 |
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} |
177 |
# destroy item via seperate callback method (a POST) if requested |
# destroy item via seperate callback method (a POST) if requested |
178 |
#$options->{cb}->{destroy}->($_[0]) if $options->{destroy}; |
#$options->{cb}->{destroy}->($_[0]) if $options->{destroy}; |
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|
|
182 |
#$item = deep_copy($_[0]); |
#$item = deep_copy($_[0]); |
183 |
$item = $_[0]; |
$item = $_[0]; |
184 |
# conversions/encodings |
# conversions/encodings |
185 |
$item = scalar2utf8($item) if ($item && $options->{utf8}); |
$item = latin_to_utf8_scalar($item) if ($item && $options->{utf8}); |
186 |
|
$item = utf8_to_latin_scalar($item) if ($item && $options->{to_latin}); |
187 |
} |
} |
188 |
#push(@{$result}, $item) if $item; # use item only if not undef (TODO: make configurable via $options) |
#push(@{$result}, $item) if $item; # use item only if not undef (TODO: make configurable via $options) |
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push(@{$result}, $item); # use item in any case |
push(@{$result}, $item); # use item in any case |
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|
|
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} |
} |
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} elsif (ref $obj eq 'CODE') { |
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#print Dumper($obj); |
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#exit; |
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197 |
# TODO: "} elsif (ref $obj eq 'HASH') { [...] } else { croak 'could not deref blah'; }" ??? |
# TODO: "} elsif (ref $obj eq 'HASH') { [...] } else { croak 'could not deref blah'; }" ??? |
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} else { |
} elsif (ref $obj) { |
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|
|
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IterHash %$obj, sub { |
IterHash %$obj, sub { |
201 |
my $item; |
my $item; |
202 |
|
|
203 |
# if current item is a reference ... |
# if current item is a reference ... |
204 |
if (ref $_[1]) { |
if (ref $_[1]) { |
205 |
# ... expand structure recursively |
$item = $_[1]; |
206 |
$item = expand($_[1], $options); |
# if $options->{childObj2string} is TRUE or STRING don't expand referenced object, |
207 |
|
# instead replace it by per option choosed string (default: o_<classname>_<ref type>_<guid> ) |
208 |
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if ($item && $options->{childObj2string} && !(ref $_[1] eq "ARRAY") && !(ref $_[1] eq "HASH")) { |
209 |
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$item = childObj2string($item, $options->{childObj2string}); |
210 |
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} else { |
211 |
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# ... expand structure recursively |
212 |
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$item = expand($_[1], $options); |
213 |
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} |
214 |
# destroy item via seperate callback method (a POST) if requested |
# destroy item via seperate callback method (a POST) if requested |
215 |
#$options->{cb}->{destroy}->($_[1]) if $options->{destroy}; |
#$options->{cb}->{destroy}->($_[1]) if $options->{destroy}; |
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|
|
219 |
#$item = deep_copy($_[1]); |
#$item = deep_copy($_[1]); |
220 |
$item = $_[1]; |
$item = $_[1]; |
221 |
# conversions/encodings |
# conversions/encodings |
222 |
$item = scalar2utf8($item) if ($item && $options->{utf8}); |
$item = latin_to_utf8_scalar($item) if ($item && $options->{utf8}); |
223 |
|
$item = utf8_to_latin_scalar($item) if ($item && $options->{to_latin}); |
224 |
} |
} |
225 |
#$result->{$_[0]} = $item if $item; # use item only if not undef (TODO: make configurable via $options) |
#$result->{$_[0]} = $item if $item; # use item only if not undef (TODO: make configurable via $options) |
226 |
$result->{$_[0]} = $item; # use item in any case |
$result->{$_[0]} = $item; # use item in any case |
227 |
} |
} |
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|
229 |
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} else { |
230 |
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#die ("not a reference!"); |
231 |
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$result = $obj; |
232 |
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} |
} |
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|
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# convert all values to utf8 (inside complex struct) |
# convert all values to utf8 (inside complex struct) |
236 |
# now done in core-item-callbacks via Greg London's "Iterate" from CPAN |
# now done in core-item-callbacks via Greg London's "Iterate" from CPAN |
237 |
# var2utf8($result) if ($options->{utf8}); |
# latin_to_utf8($result) if ($options->{utf8}); |
238 |
|
|
239 |
# 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 |
240 |
#undef $obj if $options->{destroy}; |
#undef $obj if $options->{destroy}; |
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248 |
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249 |
my @indexstack; |
my @indexstack; |
250 |
sub var_traverse_mixin_update { |
sub _var_traverse_mixin_update_old { |
251 |
my $obj = shift; |
my $obj = shift; |
252 |
my $data = shift; |
my $data = shift; |
253 |
my $bool_recursion = shift; |
my $bool_recursion = shift; |
291 |
#return $result; |
#return $result; |
292 |
} |
} |
293 |
|
|
294 |
sub object2hash { |
sub merge_to { |
295 |
my $object = shift; |
_hash2object(@_); |
296 |
my $options = shift; |
# TODO: |
297 |
#my $deref = var_deref($object); |
# re-implement using CPAN's "Iterate" and/or a modified Hash::Merge. |
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my $deref = expand($object, $options); |
|
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#var2utf8($deref) if ($options->{utf8}); |
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return $deref; |
|
298 |
} |
} |
299 |
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300 |
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301 |
# todo: maybe do diff(s) here sometimes!? |
# todo: maybe do diff(s) here sometimes!? |
302 |
sub hash2object { |
sub _hash2object { |
303 |
my $object = shift; |
my $object = shift; |
304 |
my $data = shift; |
my $data = shift; |
305 |
my $options = shift; |
my $options = shift; |
308 |
|
|
309 |
# "patch" needed 'cause php passes numerical-indexed-arrays as hash-tables, |
# "patch" needed 'cause php passes numerical-indexed-arrays as hash-tables, |
310 |
# this method corrects this |
# this method corrects this |
311 |
var_NumericalHashToArray($data) if ($options->{php}); |
numhash2list($data) if ($options->{php}); |
312 |
|
|
313 |
# utf8-conversion/-encoding (essential for I18N) |
# utf8-conversion/-encoding (essential for I18N) |
314 |
var_utf2iso($data) if ($options->{utf8}); |
utf8_to_latin($data) if ($options->{utf8}); |
315 |
|
|
316 |
# get fresh object from database |
# get fresh object from database |
317 |
# todo: |
# todo: |
320 |
#my $obj = $self->getObject($oid); |
#my $obj = $self->getObject($oid); |
321 |
|
|
322 |
# mix changes into fresh object and save it back |
# mix changes into fresh object and save it back |
323 |
hash2object_traverse_mixin($object, $data); |
_hash2object_traverse_mixin($object, $data, 0, $options); |
324 |
|
|
325 |
# done in core mixin function? |
# done in core mixin function? |
326 |
#$self->{storage}->update($obj); |
#$self->{storage}->update($obj); |
343 |
#my @indexstack; |
#my @indexstack; |
344 |
|
|
345 |
# traverse a deeply nested structure, mix in values from given hash, update underlying tangram-object |
# traverse a deeply nested structure, mix in values from given hash, update underlying tangram-object |
346 |
sub hash2object_traverse_mixin { |
sub _hash2object_traverse_mixin { |
347 |
my $object = shift; |
my $object = shift; |
348 |
my $data = shift; |
my $data = shift; |
349 |
my $bool_recursion = shift; |
my $bool_recursion = shift; |
350 |
|
my $options = shift; |
351 |
|
|
352 |
# clear our key - stack if we are called from user-code (non-recursively) |
# clear our key - stack if we are called from user-code (non-recursively) |
353 |
@indexstack = () if (!$bool_recursion); |
@indexstack = () if (!$bool_recursion); |
361 |
# what's exactly done here? hmmm.... it works ;) |
# what's exactly done here? hmmm.... it works ;) |
362 |
# maybe a HACK: please try not to use "IntrHash"es, maybe this cannot handle them!!! |
# maybe a HACK: please try not to use "IntrHash"es, maybe this cannot handle them!!! |
363 |
# extend! check! |
# extend! check! |
364 |
if ((attributes::reftype($object) eq 'HASH') && (ref($object) ne 'HASH') && (ref($object) ne 'ARRAY')) { |
|
365 |
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#print attributes::reftype($object), "\n"; |
366 |
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367 |
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# V1 |
368 |
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#if ((attributes::reftype($object) eq 'HASH') && (ref($object) ne 'HASH') && (ref($object) ne 'ARRAY')) { |
369 |
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# V2 |
370 |
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my $reftype = attributes::reftype($object); |
371 |
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#print "reftype: '$reftype'", "\n"; |
372 |
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if ($reftype eq 'HASH') { |
373 |
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|
374 |
# print STDERR "===", "reftype: ", attributes::reftype($obj), "\n"; |
# print STDERR "===", "reftype: ", attributes::reftype($obj), "\n"; |
375 |
|
|
376 |
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my @fields; |
377 |
# loop through fields of object (Tangram-object) |
# loop through fields of object (Tangram-object) |
378 |
foreach (keys %{$object}) { |
@fields = keys %{$object}; |
379 |
push @indexstack, $_; |
|
380 |
|
# loop through fields of to.be.injected-data (arbitrary Perl-data-structure) |
381 |
|
@fields = keys %{$data} if $options->{init}; |
382 |
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# @fields = keys %{$data} if $options->{mixin}; |
383 |
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384 |
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foreach (@fields) { |
385 |
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my $field = $_; |
386 |
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push @indexstack, $field; |
387 |
|
|
388 |
# determine type of object |
# determine type of object |
389 |
my $ref = ref $object->{$_}; |
my $ref = ref $object->{$field}; |
390 |
# print STDERR "attrname: $_ ATTRref: $ref", "\n"; |
# print STDERR "attrname: $_ ATTRref: $ref", "\n"; |
391 |
if ($ref) { |
if ($ref) { |
392 |
hash2object_traverse_mixin($object->{$_}, $data, 1); |
_hash2object_traverse_mixin($object->{$field}, $data, 1, $options); |
393 |
} else { |
} else { |
394 |
my $val = getStructSlotByStringyAddress($data, \@indexstack); |
my $val = ref_slot($data, \@indexstack); |
395 |
$object->{$_} = $val; |
|
396 |
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#print Dumper($options); |
397 |
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my $field_target = $field; |
398 |
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if (my $pattern = $options->{pattern_strip_key}) { |
399 |
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print "pattern: $pattern", "\n"; |
400 |
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$field_target =~ s/$pattern//; |
401 |
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print "field: $field_target", "\n"; |
402 |
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} |
403 |
|
|
404 |
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$object->{$field_target} = $val if defined $val; |
405 |
} |
} |
406 |
pop @indexstack; |
pop @indexstack; |
407 |
} |
} |
432 |
push @indexstack, $i; |
push @indexstack, $i; |
433 |
my $ref = ref $_; |
my $ref = ref $_; |
434 |
# print STDERR "attrname: $_ ATTRref: $ref", "\n"; |
# print STDERR "attrname: $_ ATTRref: $ref", "\n"; |
435 |
if ($ref && $_) { |
# if ($ref && $_) { |
436 |
hash2object_traverse_mixin($_, $data, 1); |
if ($ref) { |
437 |
|
_hash2object_traverse_mixin($_, $data, 1, $options); |
438 |
} else { |
} else { |
439 |
$object->[$i] = $_; |
$object->[$i] = $_ if defined $_; |
440 |
} |
} |
441 |
pop @indexstack; |
pop @indexstack; |
442 |
$i++; |
$i++; |
443 |
} |
} |
444 |
|
|
445 |
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=pod |
446 |
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# object? |
447 |
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} else { |
448 |
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print "reference: ", ref $object, "\n"; |
449 |
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print "reftype: ", $reftype, "\n"; |
450 |
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die(__PACKAGE__ . "->_hash2object_traverse_mixin: can not handle this!"); |
451 |
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=cut |
452 |
|
|
453 |
} |
} |
454 |
|
|
455 |
} |
} |
456 |
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457 |
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|
458 |
# this function seems to do similar stuff like these below (refexpr2perlref & co.) |
# ACK's go to Randal L. Schwartz <merlyn@stonehenge.com> |
459 |
sub getStructSlotByStringyAddress { |
# on the website: |
460 |
my $var = shift; |
# This text is copyright by Miller-Freeman, Inc., and is used with their permission. |
461 |
my $indexstack_ref = shift; |
# Further distribution or use is not permitted. |
462 |
my @indexstack = @{$indexstack_ref}; |
# please visit http://www.stonehenge.com/merlyn/UnixReview/col30.html |
463 |
my $joiner = '->'; |
sub deep_copy1 { |
464 |
my @evlist; |
my $this = shift; |
465 |
foreach (@indexstack) { |
if (not ref $this) { |
466 |
my $elem; |
$this; |
467 |
if ($_ =~ m/\d+/) { $elem = "[$_]"; } |
} elsif (ref $this eq "ARRAY") { |
468 |
if ($_ =~ m/\D+/) { $elem = "{$_}"; } |
[map deep_copy1($_), @$this]; |
469 |
push @evlist, $elem; |
} elsif (ref $this eq "HASH") { |
470 |
} |
+{map { $_ => deep_copy1($this->{$_}) } keys %$this}; |
471 |
my $evstring = join($joiner, @evlist); |
} elsif (ref $this eq "CODE") { |
472 |
$evstring = 'return $var->' . $evstring . ';'; |
$this; |
473 |
#print "ev: $evstring\n"; |
} else { die "deep_copy1 asks: what type is $this?" } |
474 |
return eval($evstring); |
#} else { print "deep_copy asks: what type is $this?", "\n"; } |
475 |
} |
} |
476 |
|
|
477 |
|
# ACK's go to Andrew Pitonyak |
478 |
|
# Copyright 2002, Andrew Pitonyak (perlboy@pitonyak.org) |
479 |
|
# please visit: http://www.pitonyak.org/code/perl/Pitonyak/DeepCopy.pm.html |
480 |
|
sub deep_copy { |
481 |
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Pitonyak::DeepCopy::deep_copy(@_); |
482 |
|
} |
483 |
|
|
|
sub refexpr2perlref { |
|
484 |
|
|
485 |
|
sub childObj2string { |
486 |
my $obj = shift; |
my $obj = shift; |
487 |
my $expr = shift; |
my $option = shift; |
488 |
my $callbackMap = shift; |
my $classname = ref $obj; |
|
|
|
|
my $value; |
|
|
# detect for callback (code-reference) |
|
|
if (ref($expr) eq 'CODE') { |
|
|
$value = &$expr($obj); |
|
|
|
|
|
} elsif ($expr =~ m/->/) { |
|
|
# use expr as complex object reference declaration (obj->subObj->subSubObj->0->attribute) |
|
|
(my $objPerlRefString, my $parts) = refexpr2perlref_parts($expr); |
|
|
#print "\n", "expr: $expr"; |
|
|
#print "\n", "objPerlRefString: $objPerlRefString"; |
|
|
$value = eval('$obj' . '->' . $objPerlRefString); |
|
|
|
|
|
# if value isn't set, try to "fallback" to callbackMap |
|
|
# callbacks are applied this way: |
|
|
# take the last element of the expression parts and check if this string exists as a key in the callback-map |
|
|
if (!$value && $callbackMap) { |
|
|
#print Dumper($callbackMap); |
|
|
|
|
|
# prepare needle |
|
|
my @parts = @$parts; |
|
|
my $count = $#parts; |
|
|
my $needle = $parts[$count]; |
|
|
|
|
|
# prepare haystack |
|
|
my @haystack = keys %$callbackMap; |
|
|
if (grep($needle, @haystack)) { |
|
|
$value = $callbackMap->{$needle}->(); |
|
|
#print "value: ", $value, "\n"; |
|
|
} |
|
|
} |
|
|
|
|
|
} else { |
|
|
# use expr as simple scalar key (attributename) |
|
|
$value = $obj->{$expr}; |
|
|
} |
|
|
|
|
|
return $value; |
|
489 |
|
|
490 |
|
if($option == 1) { |
491 |
|
my $string = "o_" . $classname . "_" .$obj->{guid}; |
492 |
|
return $string; |
493 |
|
} |
494 |
} |
} |
495 |
|
|
496 |
|
|
|
sub refexpr2perlref_parts { |
|
|
my $expr = shift; |
|
|
|
|
|
# split expression by dereference operators first |
|
|
my @parts_pure = split(/->/, $expr); |
|
|
|
|
|
# wrap []'s around each part, if it consists of numeric characters only (=> numeric = array-index), |
|
|
# use {}'s, if there are word-characters in it (=> alphanumeric = hash-key) |
|
|
my @parts_capsule = @parts_pure; |
|
|
map { |
|
|
m/^\d+$/ && ($_ = "[$_]") || ($_ = "{$_}"); |
|
|
} @parts_capsule; |
|
|
|
|
|
# join parts with dereference operators together again and return built string |
|
|
return (join('->', @parts_capsule), \@parts_pure); |
|
|
} |
|
|
|
|
497 |
1; |
1; |
498 |
|
__END__ |