1 |
joko |
1.1 |
############################################## |
2 |
|
|
# |
3 |
joko |
1.4 |
# $Id: Deep.pm,v 1.3 2002/12/03 05:34:55 joko Exp $ |
4 |
joko |
1.2 |
# |
5 |
|
|
# $Log: Deep.pm,v $ |
6 |
joko |
1.4 |
# Revision 1.3 2002/12/03 05:34:55 joko |
7 |
|
|
# + bugfix: now utilizing var_utf2iso from Data::Transform::Encode |
8 |
|
|
# |
9 |
joko |
1.3 |
# Revision 1.2 2002/12/01 04:44:07 joko |
10 |
|
|
# + code from Data::Transform::OO |
11 |
|
|
# |
12 |
joko |
1.2 |
# Revision 1.1 2002/11/29 04:49:20 joko |
13 |
|
|
# + initial check-in |
14 |
joko |
1.1 |
# |
15 |
|
|
# Revision 1.1 2002/10/10 03:26:00 cvsjoko |
16 |
|
|
# + new |
17 |
|
|
# |
18 |
|
|
############################################## |
19 |
|
|
|
20 |
|
|
|
21 |
|
|
package Data::Transform::Deep; |
22 |
|
|
|
23 |
|
|
use strict; |
24 |
|
|
use warnings; |
25 |
|
|
|
26 |
|
|
require Exporter; |
27 |
|
|
our @ISA = qw( Exporter ); |
28 |
joko |
1.2 |
our @EXPORT_OK = qw( |
29 |
|
|
&var_NumericalHashToArray |
30 |
|
|
&var_mixin |
31 |
|
|
&object2hash |
32 |
|
|
&hash2object |
33 |
|
|
&refexpr2perlref |
34 |
joko |
1.4 |
&expand |
35 |
joko |
1.1 |
); |
36 |
joko |
1.4 |
# &var_deref |
37 |
joko |
1.2 |
# &getStructSlotByStringyAddress |
38 |
joko |
1.1 |
|
39 |
|
|
use attributes; |
40 |
joko |
1.2 |
use Data::Dumper; |
41 |
joko |
1.4 |
use Data::Transform::Encode qw( var_utf2iso var2utf8 scalar2utf8 ); |
42 |
|
|
use libp qw( deep_copy ); |
43 |
|
|
use Iterate; |
44 |
joko |
1.1 |
|
45 |
|
|
sub var_NumericalHashToArray { |
46 |
|
|
my $vref = shift; |
47 |
|
|
#my $context = shift; |
48 |
|
|
if (ref $vref eq 'HASH') { |
49 |
|
|
foreach (keys %{$vref}) { |
50 |
|
|
# if ((ref $vref->{$_}) =~ m/HASH/) { |
51 |
|
|
if ((ref $vref->{$_}) =~ m/HASH/) { |
52 |
|
|
if ($vref->{$_}{0}) { # might be a numerical-indexed array |
53 |
|
|
#print "000\n"; |
54 |
|
|
#print "context: $context\n"; |
55 |
|
|
my @arr; |
56 |
|
|
foreach my $key_numeric (sort keys %{$vref->{$_}}) { |
57 |
|
|
push @arr, $vref->{$_}{$key_numeric}; |
58 |
|
|
} |
59 |
|
|
$vref->{$_} = \@arr; |
60 |
|
|
} |
61 |
|
|
var_NumericalHashToArray($vref->{$_}); |
62 |
|
|
} |
63 |
|
|
# } else { |
64 |
|
|
# #$vref->{$_} = scalar2iso($vref->{$_}); |
65 |
|
|
# } |
66 |
|
|
} |
67 |
|
|
} |
68 |
|
|
} |
69 |
|
|
|
70 |
|
|
|
71 |
|
|
sub var_deref { |
72 |
|
|
my $obj = shift; |
73 |
joko |
1.4 |
my $options = shift; |
74 |
joko |
1.1 |
my $result; |
75 |
|
|
if ((ref $obj) eq 'ARRAY') { |
76 |
|
|
foreach (@{$obj}) { |
77 |
|
|
my $ref = ref $_; |
78 |
|
|
if ($ref) { |
79 |
joko |
1.4 |
push(@{$result}, var_deref($_, $options)); |
80 |
|
|
#undef $_; |
81 |
joko |
1.1 |
} else { |
82 |
joko |
1.4 |
#push(@{$result}, $_); |
83 |
|
|
push(@{$result}, deep_copy($_)); |
84 |
joko |
1.1 |
} |
85 |
joko |
1.4 |
#undef $_ if $options->{destroy}; |
86 |
|
|
#$options->{destroy}->($_) if $options->{destroy}; |
87 |
joko |
1.1 |
} |
88 |
joko |
1.2 |
# TODO: "} elsif (ref $obj eq 'HASH') { [...] } else { croak 'could not deref blah'; }" ??? |
89 |
joko |
1.1 |
} else { |
90 |
|
|
foreach (keys %{$obj}) { |
91 |
|
|
my $key = $_; |
92 |
|
|
my $ref = ref $obj->{$_}; |
93 |
|
|
if ($ref) { |
94 |
joko |
1.4 |
$result->{$_} = var_deref($obj->{$_}, $options); |
95 |
|
|
#undef $obj->{$_}; |
96 |
joko |
1.1 |
} else { |
97 |
joko |
1.4 |
#$result->{$_} = $obj->{$_}; |
98 |
|
|
$result->{$_} = deep_copy($obj->{$_}); |
99 |
joko |
1.1 |
} |
100 |
joko |
1.4 |
#undef $obj->{$_} if $options->{destroy}; |
101 |
|
|
#$options->{destroy}->($obj->{$_}) if $options->{destroy}; |
102 |
joko |
1.1 |
} |
103 |
|
|
} |
104 |
joko |
1.4 |
#undef $obj if $options->{destroy}; |
105 |
|
|
$options->{cb_destroy}->($obj) if $options->{cb_destroy}; |
106 |
joko |
1.1 |
return $result; |
107 |
|
|
} |
108 |
|
|
|
109 |
|
|
|
110 |
joko |
1.4 |
sub expand { |
111 |
|
|
|
112 |
|
|
my $obj = shift; |
113 |
|
|
my $options = shift; |
114 |
|
|
my $result; |
115 |
|
|
|
116 |
|
|
if ((ref $obj) eq 'ARRAY') { |
117 |
|
|
|
118 |
|
|
IterArray @$obj, sub { |
119 |
|
|
my $item; |
120 |
|
|
# if current item is a reference ... |
121 |
|
|
if (ref $_[0]) { |
122 |
|
|
# ... expand structure recursively |
123 |
|
|
$item = expand($_[0], $options); |
124 |
|
|
# destroy item via seperate callback method (a POST) if requested |
125 |
|
|
#$options->{cb}->{destroy}->($_[0]) if $options->{destroy}; |
126 |
|
|
|
127 |
|
|
# ... assume plain scalar |
128 |
|
|
} else { |
129 |
|
|
#$item = deep_copy($_[0]); |
130 |
|
|
$item = $_[0]; |
131 |
|
|
# conversions/encodings |
132 |
|
|
$item = scalar2utf8($item) if ($item && $options->{utf8}); |
133 |
|
|
} |
134 |
|
|
#push(@{$result}, $item) if $item; # use item only if not undef (TODO: make configurable via $options) |
135 |
|
|
push(@{$result}, $item); # use item in any case |
136 |
|
|
|
137 |
|
|
} |
138 |
|
|
|
139 |
|
|
# TODO: "} elsif (ref $obj eq 'HASH') { [...] } else { croak 'could not deref blah'; }" ??? |
140 |
|
|
} else { |
141 |
|
|
|
142 |
|
|
IterHash %$obj, sub { |
143 |
|
|
my $item; |
144 |
|
|
|
145 |
|
|
# if current item is a reference ... |
146 |
|
|
if (ref $_[1]) { |
147 |
|
|
# ... expand structure recursively |
148 |
|
|
$item = expand($_[1], $options); |
149 |
|
|
# destroy item via seperate callback method (a POST) if requested |
150 |
|
|
#$options->{cb}->{destroy}->($_[1]) if $options->{destroy}; |
151 |
|
|
|
152 |
|
|
# ... assume plain scalar |
153 |
|
|
} else { |
154 |
|
|
#$item = deep_copy($_[1]); |
155 |
|
|
$item = $_[1]; |
156 |
|
|
# conversions/encodings |
157 |
|
|
$item = scalar2utf8($item) if ($item && $options->{utf8}); |
158 |
|
|
} |
159 |
|
|
#$result->{$_[0]} = $item if $item; # use item only if not undef (TODO: make configurable via $options) |
160 |
|
|
$result->{$_[0]} = $item; # use item in any case |
161 |
|
|
} |
162 |
|
|
|
163 |
|
|
} |
164 |
|
|
|
165 |
|
|
# convert all values to utf8 (inside complex struct) |
166 |
|
|
# now done in core-item-callbacks via Greg London's "Iterate" from CPAN |
167 |
|
|
# var2utf8($result) if ($options->{utf8}); |
168 |
|
|
|
169 |
|
|
# destroy persistent object from memory to be sure to get a fresh one next time |
170 |
|
|
#undef $obj if $options->{destroy}; |
171 |
|
|
#$options->{cb_destroy}->($obj) if $options->{cb_destroy}; |
172 |
|
|
#$options->{cb}->{destroy}->($obj) if $options->{destroy}; |
173 |
|
|
|
174 |
|
|
return $result; |
175 |
|
|
} |
176 |
|
|
|
177 |
joko |
1.1 |
|
178 |
|
|
|
179 |
|
|
my @indexstack; |
180 |
|
|
sub var_traverse_mixin_update { |
181 |
|
|
my $obj = shift; |
182 |
|
|
my $data = shift; |
183 |
|
|
my $bool_recursion = shift; |
184 |
|
|
if (!$bool_recursion) { |
185 |
|
|
@indexstack = (); |
186 |
|
|
} |
187 |
|
|
my $result; |
188 |
|
|
|
189 |
|
|
# 'ARRAY' does not work! |
190 |
|
|
if ((ref $obj) eq 'ARRAY') { |
191 |
|
|
#print "ARRAY\n"; |
192 |
|
|
my $i = 0; |
193 |
|
|
foreach (@{$obj}) { |
194 |
|
|
push @indexstack, $i; |
195 |
|
|
my $ref = ref $_; |
196 |
|
|
if ($ref) { |
197 |
|
|
#$obj->[$i] = var_mixin($_, $data, 1); |
198 |
|
|
var_traverse_mixin_update($_, $data, 1); |
199 |
|
|
} else { |
200 |
|
|
$obj->[$i] = $_; |
201 |
|
|
} |
202 |
|
|
pop @indexstack; |
203 |
|
|
$i++; |
204 |
|
|
} |
205 |
|
|
} else { |
206 |
|
|
foreach (keys %{$obj}) { |
207 |
|
|
push @indexstack, $_; |
208 |
|
|
my $ref = ref $obj->{$_}; |
209 |
|
|
if ($ref) { |
210 |
|
|
#$obj->{$_} = var_mixin($obj->{$_}, $data, 1); |
211 |
|
|
var_traverse_mixin_update($obj->{$_}, $data, 1); |
212 |
|
|
} else { |
213 |
|
|
#$obj->{$_} = $obj->{$_}; |
214 |
|
|
my $evstring = getSlot($data); |
215 |
|
|
$obj->{$_} = $evstring; |
216 |
|
|
|
217 |
|
|
} |
218 |
|
|
pop @indexstack; |
219 |
|
|
} |
220 |
|
|
} |
221 |
|
|
#return $result; |
222 |
|
|
} |
223 |
|
|
|
224 |
joko |
1.2 |
sub object2hash { |
225 |
|
|
my $object = shift; |
226 |
|
|
my $options = shift; |
227 |
joko |
1.4 |
#my $deref = var_deref($object); |
228 |
|
|
my $deref = expand($object, $options); |
229 |
|
|
#var2utf8($deref) if ($options->{utf8}); |
230 |
joko |
1.2 |
return $deref; |
231 |
|
|
} |
232 |
|
|
|
233 |
|
|
# todo: maybe do diff(s) here sometimes!? |
234 |
|
|
sub hash2object { |
235 |
|
|
my $object = shift; |
236 |
|
|
my $data = shift; |
237 |
|
|
my $options = shift; |
238 |
|
|
|
239 |
joko |
1.3 |
#print "hash2object", "\n"; |
240 |
|
|
|
241 |
joko |
1.2 |
# "patch" needed 'cause php passes numerical-indexed-arrays as hash-tables, |
242 |
|
|
# this method corrects this |
243 |
|
|
var_NumericalHashToArray($data) if ($options->{php}); |
244 |
|
|
|
245 |
|
|
# utf8-conversion/-encoding (essential for I18N) |
246 |
|
|
var_utf2iso($data) if ($options->{utf8}); |
247 |
|
|
|
248 |
|
|
# get fresh object from database |
249 |
|
|
# todo: |
250 |
|
|
# - handle "locked" objects !!! |
251 |
|
|
# - check if already another update occoured (object-revisioning needed!) |
252 |
|
|
#my $obj = $self->getObject($oid); |
253 |
|
|
|
254 |
|
|
# mix changes into fresh object and save it back |
255 |
|
|
hash2object_traverse_mixin($object, $data); |
256 |
|
|
|
257 |
|
|
# done in core mixin function? |
258 |
|
|
#$self->{storage}->update($obj); |
259 |
|
|
|
260 |
|
|
# we should "undef" some objects here to destroy them in memory and enforce reloading when used next time |
261 |
|
|
# simulate: |
262 |
|
|
#$self->{storage}->disconnect(); |
263 |
|
|
|
264 |
|
|
} |
265 |
|
|
|
266 |
|
|
# ------------------------------------ |
267 |
|
|
# core mixin function |
268 |
|
|
# TODO-FEATURE: make this possible in a reverse way: object is empty (no fields) and gets filled up by mixin-data |
269 |
|
|
|
270 |
|
|
# remember keys of structures we are traversing |
271 |
|
|
# this is a HACK: |
272 |
|
|
# - don't (!!!) "packageglobal" @indexstack |
273 |
|
|
# - it will lead to problems with parallelism! |
274 |
|
|
|
275 |
|
|
#my @indexstack; |
276 |
|
|
|
277 |
|
|
# traverse a deeply nested structure, mix in values from given hash, update underlying tangram-object |
278 |
|
|
sub hash2object_traverse_mixin { |
279 |
|
|
my $object = shift; |
280 |
|
|
my $data = shift; |
281 |
|
|
my $bool_recursion = shift; |
282 |
|
|
|
283 |
|
|
# clear our key - stack if we are called from user-code (non-recursively) |
284 |
|
|
@indexstack = () if (!$bool_recursion); |
285 |
|
|
|
286 |
|
|
my $classname = ref $object; |
287 |
|
|
# if ($classname) { |
288 |
|
|
# print STDERR "*****************", Dumper(Class::Tangram::attribute_types($classname)), "\n"; |
289 |
|
|
# } |
290 |
|
|
|
291 |
|
|
# parser: detected OBJECT (a Tangram one?) (reftype == HASH) (assume) |
292 |
|
|
# what's exactly done here? hmmm.... it works ;) |
293 |
|
|
# maybe a HACK: please try not to use "IntrHash"es, maybe this cannot handle them!!! |
294 |
|
|
# extend! check! |
295 |
|
|
if ((attributes::reftype($object) eq 'HASH') && (ref($object) ne 'HASH') && (ref($object) ne 'ARRAY')) { |
296 |
|
|
|
297 |
|
|
# print STDERR "===", "reftype: ", attributes::reftype($obj), "\n"; |
298 |
|
|
|
299 |
|
|
# loop through fields of object (Tangram-object) |
300 |
|
|
foreach (keys %{$object}) { |
301 |
|
|
push @indexstack, $_; |
302 |
|
|
|
303 |
|
|
# determine type of object |
304 |
|
|
my $ref = ref $object->{$_}; |
305 |
|
|
# print STDERR "attrname: $_ ATTRref: $ref", "\n"; |
306 |
|
|
if ($ref) { |
307 |
|
|
hash2object_traverse_mixin($object->{$_}, $data, 1); |
308 |
|
|
} else { |
309 |
|
|
my $val = getStructSlotByStringyAddress($data, \@indexstack); |
310 |
|
|
$object->{$_} = $val; |
311 |
|
|
} |
312 |
|
|
pop @indexstack; |
313 |
|
|
} |
314 |
|
|
|
315 |
|
|
# save object to database ... |
316 |
|
|
# ... do an update if it already exists, do an insert if it doesn't |
317 |
|
|
# my $objectId = $self->{storage}->id($obj); |
318 |
|
|
# $logger->debug( __PACKAGE__ . "->saveObjectFromHash_traverse_mixin_update( object $obj objectId $objectId )" ); |
319 |
|
|
# if ($objectId) { |
320 |
|
|
# $self->{storage}->update($obj); |
321 |
|
|
|
322 |
|
|
#print __PACKAGE__ . ":", "\n"; |
323 |
|
|
#print Dumper($object); |
324 |
|
|
|
325 |
|
|
# } else { |
326 |
|
|
# $self->{storage}->insert($obj); |
327 |
|
|
# } |
328 |
|
|
|
329 |
|
|
} |
330 |
|
|
|
331 |
|
|
#&& ( ref($obj) ne 'HASH' ) |
332 |
|
|
|
333 |
|
|
# loop through entries of array (IntrArray, isn't it?) |
334 |
|
|
if ((ref $object) eq 'ARRAY') { |
335 |
|
|
# print STDERR "===", "refttype ", attributes::reftype($obj), "\n"; |
336 |
|
|
my $i = 0; |
337 |
|
|
foreach (@{$object}) { |
338 |
|
|
push @indexstack, $i; |
339 |
|
|
my $ref = ref $_; |
340 |
|
|
# print STDERR "attrname: $_ ATTRref: $ref", "\n"; |
341 |
|
|
if ($ref && $_) { |
342 |
|
|
hash2object_traverse_mixin($_, $data, 1); |
343 |
|
|
} else { |
344 |
|
|
$object->[$i] = $_; |
345 |
|
|
} |
346 |
|
|
pop @indexstack; |
347 |
|
|
$i++; |
348 |
|
|
} |
349 |
|
|
} |
350 |
|
|
|
351 |
|
|
} |
352 |
|
|
|
353 |
|
|
|
354 |
|
|
# this function seems to do similar stuff like these below (refexpr2perlref & co.) |
355 |
joko |
1.1 |
sub getStructSlotByStringyAddress { |
356 |
|
|
my $var = shift; |
357 |
|
|
my $indexstack_ref = shift; |
358 |
|
|
my @indexstack = @{$indexstack_ref}; |
359 |
|
|
my $joiner = '->'; |
360 |
|
|
my @evlist; |
361 |
|
|
foreach (@indexstack) { |
362 |
|
|
my $elem; |
363 |
|
|
if ($_ =~ m/\d+/) { $elem = "[$_]"; } |
364 |
|
|
if ($_ =~ m/\D+/) { $elem = "{$_}"; } |
365 |
|
|
push @evlist, $elem; |
366 |
|
|
} |
367 |
|
|
my $evstring = join($joiner, @evlist); |
368 |
|
|
$evstring = 'return $var->' . $evstring . ';'; |
369 |
|
|
#print "ev: $evstring\n"; |
370 |
|
|
return eval($evstring); |
371 |
joko |
1.2 |
} |
372 |
|
|
|
373 |
|
|
|
374 |
|
|
sub refexpr2perlref { |
375 |
|
|
|
376 |
|
|
my $obj = shift; |
377 |
|
|
my $expr = shift; |
378 |
|
|
my $callbackMap = shift; |
379 |
|
|
|
380 |
|
|
my $value; |
381 |
|
|
# detect for callback (code-reference) |
382 |
|
|
if (ref($expr) eq 'CODE') { |
383 |
|
|
$value = &$expr($obj); |
384 |
|
|
|
385 |
|
|
} elsif ($expr =~ m/->/) { |
386 |
|
|
# use expr as complex object reference declaration (obj->subObj->subSubObj->0->attribute) |
387 |
|
|
(my $objPerlRefString, my $parts) = refexpr2perlref_parts($expr); |
388 |
|
|
#print "\n", "expr: $expr"; |
389 |
|
|
#print "\n", "objPerlRefString: $objPerlRefString"; |
390 |
|
|
$value = eval('$obj' . '->' . $objPerlRefString); |
391 |
|
|
|
392 |
|
|
# if value isn't set, try to "fallback" to callbackMap |
393 |
|
|
# callbacks are applied this way: |
394 |
|
|
# take the last element of the expression parts and check if this string exists as a key in the callback-map |
395 |
|
|
if (!$value && $callbackMap) { |
396 |
|
|
#print Dumper($callbackMap); |
397 |
|
|
|
398 |
|
|
# prepare needle |
399 |
|
|
my @parts = @$parts; |
400 |
|
|
my $count = $#parts; |
401 |
|
|
my $needle = $parts[$count]; |
402 |
|
|
|
403 |
|
|
# prepare haystack |
404 |
|
|
my @haystack = keys %$callbackMap; |
405 |
|
|
if (grep($needle, @haystack)) { |
406 |
|
|
$value = $callbackMap->{$needle}->(); |
407 |
|
|
#print "value: ", $value, "\n"; |
408 |
|
|
} |
409 |
|
|
} |
410 |
|
|
|
411 |
|
|
} else { |
412 |
|
|
# use expr as simple scalar key (attributename) |
413 |
|
|
$value = $obj->{$expr}; |
414 |
|
|
} |
415 |
|
|
|
416 |
|
|
return $value; |
417 |
|
|
|
418 |
|
|
} |
419 |
|
|
|
420 |
|
|
|
421 |
|
|
sub refexpr2perlref_parts { |
422 |
|
|
my $expr = shift; |
423 |
|
|
|
424 |
|
|
# split expression by dereference operators first |
425 |
|
|
my @parts_pure = split(/->/, $expr); |
426 |
|
|
|
427 |
|
|
# wrap []'s around each part, if it consists of numeric characters only (=> numeric = array-index), |
428 |
|
|
# use {}'s, if there are word-characters in it (=> alphanumeric = hash-key) |
429 |
|
|
my @parts_capsule = @parts_pure; |
430 |
|
|
map { |
431 |
|
|
m/^\d+$/ && ($_ = "[$_]") || ($_ = "{$_}"); |
432 |
|
|
} @parts_capsule; |
433 |
|
|
|
434 |
|
|
# join parts with dereference operators together again and return built string |
435 |
|
|
return (join('->', @parts_capsule), \@parts_pure); |
436 |
joko |
1.1 |
} |
437 |
|
|
|
438 |
|
|
1; |