1 |
joko |
1.7 |
## --------------------------------------------------------------------------- |
2 |
joko |
1.12 |
## $Id: Deep.pm,v 1.11 2003/02/20 21:13:54 joko Exp $ |
3 |
joko |
1.7 |
## --------------------------------------------------------------------------- |
4 |
joko |
1.8 |
## $Log: Deep.pm,v $ |
5 |
joko |
1.12 |
## Revision 1.11 2003/02/20 21:13:54 joko |
6 |
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## - removed implementation of deep_copy2 - get this from the Pitonyak namespace (now cloned to repository) |
7 |
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## |
8 |
joko |
1.11 |
## Revision 1.10 2003/02/20 20:48:00 joko |
9 |
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## - refactored lots of code to Data::Code::Ref |
10 |
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## + alternative 'deep_copy' implementation |
11 |
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## |
12 |
joko |
1.10 |
## Revision 1.9 2003/02/18 19:35:56 joko |
13 |
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## +- modified 'sub refexpr2perlref': now can get the $delimiter passed, too |
14 |
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## |
15 |
joko |
1.9 |
## Revision 1.8 2003/02/09 05:10:56 joko |
16 |
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## + minor update |
17 |
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## |
18 |
joko |
1.8 |
## Revision 1.7 2003/01/19 03:26:59 joko |
19 |
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## + added 'sub deep_copy' - refactored from libp |
20 |
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## + add 'sub merge' - exported from CPAN's 'Hash::Merge' |
21 |
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## |
22 |
joko |
1.7 |
## Revision 1.6 2002/12/23 11:27:53 jonen |
23 |
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## + changed behavior WATCH! |
24 |
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## |
25 |
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## Revision 1.5 2002/12/16 19:57:54 joko |
26 |
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## + option 'init' |
27 |
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## |
28 |
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## Revision 1.4 2002/12/05 13:56:49 joko |
29 |
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## - var_deref |
30 |
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## + expand - more sophisticated dereferencing with callbacks using Iterate |
31 |
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## |
32 |
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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 |
34 |
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## |
35 |
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## Revision 1.2 2002/12/01 04:44:07 joko |
36 |
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## + code from Data::Transform::OO |
37 |
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## |
38 |
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## Revision 1.1 2002/11/29 04:49:20 joko |
39 |
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## + initial check-in |
40 |
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## |
41 |
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## Revision 1.1 2002/10/10 03:26:00 cvsjoko |
42 |
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## + new |
43 |
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## --------------------------------------------------------------------------- |
44 |
joko |
1.1 |
|
45 |
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46 |
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package Data::Transform::Deep; |
47 |
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48 |
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use strict; |
49 |
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use warnings; |
50 |
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51 |
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require Exporter; |
52 |
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our @ISA = qw( Exporter ); |
53 |
joko |
1.2 |
our @EXPORT_OK = qw( |
54 |
joko |
1.4 |
&expand |
55 |
joko |
1.7 |
&deep_copy |
56 |
joko |
1.10 |
&merge_to |
57 |
joko |
1.1 |
); |
58 |
joko |
1.10 |
|
59 |
joko |
1.1 |
|
60 |
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use attributes; |
61 |
joko |
1.2 |
use Data::Dumper; |
62 |
joko |
1.10 |
use Iterate; |
63 |
joko |
1.7 |
|
64 |
joko |
1.12 |
use Pitonyak::DeepCopy; |
65 |
joko |
1.10 |
use Data::Transform::Encode qw( latin_to_utf8 latin_to_utf8_scalar utf8_to_latin utf8_to_latin_scalar ); |
66 |
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use Data::Code::Ref qw( ref_slot ); |
67 |
joko |
1.1 |
|
68 |
joko |
1.10 |
sub numhash2list { |
69 |
joko |
1.1 |
my $vref = shift; |
70 |
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#my $context = shift; |
71 |
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if (ref $vref eq 'HASH') { |
72 |
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foreach (keys %{$vref}) { |
73 |
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# if ((ref $vref->{$_}) =~ m/HASH/) { |
74 |
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if ((ref $vref->{$_}) =~ m/HASH/) { |
75 |
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if ($vref->{$_}{0}) { # might be a numerical-indexed array |
76 |
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#print "000\n"; |
77 |
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#print "context: $context\n"; |
78 |
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my @arr; |
79 |
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foreach my $key_numeric (sort keys %{$vref->{$_}}) { |
80 |
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push @arr, $vref->{$_}{$key_numeric}; |
81 |
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} |
82 |
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$vref->{$_} = \@arr; |
83 |
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} |
84 |
joko |
1.10 |
numhash2list($vref->{$_}); |
85 |
joko |
1.1 |
} |
86 |
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# } else { |
87 |
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# #$vref->{$_} = scalar2iso($vref->{$_}); |
88 |
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# } |
89 |
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} |
90 |
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} |
91 |
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} |
92 |
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93 |
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94 |
joko |
1.9 |
# FIXME: could this be refactored using expand? |
95 |
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# btw: "expand": look at scripts@CPAN (System Administration): |
96 |
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# there is a perl make with perl |
97 |
joko |
1.10 |
sub _var_deref_test { |
98 |
joko |
1.1 |
my $obj = shift; |
99 |
joko |
1.4 |
my $options = shift; |
100 |
joko |
1.1 |
my $result; |
101 |
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if ((ref $obj) eq 'ARRAY') { |
102 |
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foreach (@{$obj}) { |
103 |
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my $ref = ref $_; |
104 |
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if ($ref) { |
105 |
joko |
1.4 |
push(@{$result}, var_deref($_, $options)); |
106 |
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#undef $_; |
107 |
joko |
1.1 |
} else { |
108 |
joko |
1.4 |
#push(@{$result}, $_); |
109 |
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push(@{$result}, deep_copy($_)); |
110 |
joko |
1.1 |
} |
111 |
joko |
1.4 |
#undef $_ if $options->{destroy}; |
112 |
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#$options->{destroy}->($_) if $options->{destroy}; |
113 |
joko |
1.1 |
} |
114 |
joko |
1.2 |
# TODO: "} elsif (ref $obj eq 'HASH') { [...] } else { croak 'could not deref blah'; }" ??? |
115 |
joko |
1.1 |
} else { |
116 |
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foreach (keys %{$obj}) { |
117 |
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my $key = $_; |
118 |
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my $ref = ref $obj->{$_}; |
119 |
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if ($ref) { |
120 |
joko |
1.4 |
$result->{$_} = var_deref($obj->{$_}, $options); |
121 |
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#undef $obj->{$_}; |
122 |
joko |
1.1 |
} else { |
123 |
joko |
1.4 |
#$result->{$_} = $obj->{$_}; |
124 |
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$result->{$_} = deep_copy($obj->{$_}); |
125 |
joko |
1.1 |
} |
126 |
joko |
1.4 |
#undef $obj->{$_} if $options->{destroy}; |
127 |
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#$options->{destroy}->($obj->{$_}) if $options->{destroy}; |
128 |
joko |
1.1 |
} |
129 |
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} |
130 |
joko |
1.4 |
#undef $obj if $options->{destroy}; |
131 |
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$options->{cb_destroy}->($obj) if $options->{cb_destroy}; |
132 |
joko |
1.1 |
return $result; |
133 |
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} |
134 |
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135 |
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136 |
joko |
1.4 |
sub expand { |
137 |
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138 |
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my $obj = shift; |
139 |
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my $options = shift; |
140 |
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my $result; |
141 |
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142 |
joko |
1.10 |
#print "ref: ", ref $obj, "\n"; |
143 |
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144 |
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if (ref $obj eq 'ARRAY') { |
145 |
joko |
1.4 |
|
146 |
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IterArray @$obj, sub { |
147 |
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my $item; |
148 |
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# if current item is a reference ... |
149 |
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if (ref $_[0]) { |
150 |
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# ... expand structure recursively |
151 |
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$item = expand($_[0], $options); |
152 |
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# destroy item via seperate callback method (a POST) if requested |
153 |
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#$options->{cb}->{destroy}->($_[0]) if $options->{destroy}; |
154 |
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155 |
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# ... assume plain scalar |
156 |
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} else { |
157 |
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#$item = deep_copy($_[0]); |
158 |
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$item = $_[0]; |
159 |
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# conversions/encodings |
160 |
joko |
1.10 |
$item = latin_to_utf8_scalar($item) if ($item && $options->{utf8}); |
161 |
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$item = utf8_to_latin_scalar($item) if ($item && $options->{to_latin}); |
162 |
joko |
1.4 |
} |
163 |
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#push(@{$result}, $item) if $item; # use item only if not undef (TODO: make configurable via $options) |
164 |
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push(@{$result}, $item); # use item in any case |
165 |
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166 |
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} |
167 |
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168 |
joko |
1.10 |
} elsif (ref $obj eq 'CODE') { |
169 |
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#print Dumper($obj); |
170 |
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#exit; |
171 |
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172 |
joko |
1.4 |
# TODO: "} elsif (ref $obj eq 'HASH') { [...] } else { croak 'could not deref blah'; }" ??? |
173 |
joko |
1.10 |
} elsif (ref $obj) { |
174 |
joko |
1.4 |
|
175 |
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IterHash %$obj, sub { |
176 |
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my $item; |
177 |
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178 |
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# if current item is a reference ... |
179 |
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if (ref $_[1]) { |
180 |
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# ... expand structure recursively |
181 |
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$item = expand($_[1], $options); |
182 |
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# destroy item via seperate callback method (a POST) if requested |
183 |
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#$options->{cb}->{destroy}->($_[1]) if $options->{destroy}; |
184 |
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185 |
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# ... assume plain scalar |
186 |
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} else { |
187 |
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#$item = deep_copy($_[1]); |
188 |
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$item = $_[1]; |
189 |
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# conversions/encodings |
190 |
joko |
1.10 |
$item = latin_to_utf8_scalar($item) if ($item && $options->{utf8}); |
191 |
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$item = utf8_to_latin_scalar($item) if ($item && $options->{to_latin}); |
192 |
joko |
1.4 |
} |
193 |
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#$result->{$_[0]} = $item if $item; # use item only if not undef (TODO: make configurable via $options) |
194 |
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$result->{$_[0]} = $item; # use item in any case |
195 |
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} |
196 |
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197 |
joko |
1.10 |
} else { |
198 |
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#die ("not a reference!"); |
199 |
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$result = $obj; |
200 |
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201 |
joko |
1.4 |
} |
202 |
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203 |
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# convert all values to utf8 (inside complex struct) |
204 |
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# now done in core-item-callbacks via Greg London's "Iterate" from CPAN |
205 |
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# var2utf8($result) if ($options->{utf8}); |
206 |
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207 |
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# destroy persistent object from memory to be sure to get a fresh one next time |
208 |
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#undef $obj if $options->{destroy}; |
209 |
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#$options->{cb_destroy}->($obj) if $options->{cb_destroy}; |
210 |
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#$options->{cb}->{destroy}->($obj) if $options->{destroy}; |
211 |
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212 |
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return $result; |
213 |
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} |
214 |
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215 |
joko |
1.1 |
|
216 |
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217 |
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my @indexstack; |
218 |
joko |
1.10 |
sub _var_traverse_mixin_update_old { |
219 |
joko |
1.1 |
my $obj = shift; |
220 |
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my $data = shift; |
221 |
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my $bool_recursion = shift; |
222 |
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if (!$bool_recursion) { |
223 |
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@indexstack = (); |
224 |
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} |
225 |
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my $result; |
226 |
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227 |
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# 'ARRAY' does not work! |
228 |
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if ((ref $obj) eq 'ARRAY') { |
229 |
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#print "ARRAY\n"; |
230 |
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my $i = 0; |
231 |
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foreach (@{$obj}) { |
232 |
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push @indexstack, $i; |
233 |
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my $ref = ref $_; |
234 |
|
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if ($ref) { |
235 |
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#$obj->[$i] = var_mixin($_, $data, 1); |
236 |
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var_traverse_mixin_update($_, $data, 1); |
237 |
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} else { |
238 |
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$obj->[$i] = $_; |
239 |
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} |
240 |
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pop @indexstack; |
241 |
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$i++; |
242 |
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} |
243 |
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} else { |
244 |
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foreach (keys %{$obj}) { |
245 |
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push @indexstack, $_; |
246 |
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my $ref = ref $obj->{$_}; |
247 |
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if ($ref) { |
248 |
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#$obj->{$_} = var_mixin($obj->{$_}, $data, 1); |
249 |
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var_traverse_mixin_update($obj->{$_}, $data, 1); |
250 |
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} else { |
251 |
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#$obj->{$_} = $obj->{$_}; |
252 |
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my $evstring = getSlot($data); |
253 |
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$obj->{$_} = $evstring; |
254 |
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255 |
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} |
256 |
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pop @indexstack; |
257 |
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} |
258 |
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} |
259 |
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#return $result; |
260 |
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} |
261 |
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262 |
joko |
1.10 |
sub merge_to { |
263 |
|
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_hash2object(@_); |
264 |
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# TODO: |
265 |
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# re-implement using CPAN's "Iterate". |
266 |
joko |
1.2 |
} |
267 |
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268 |
joko |
1.10 |
|
269 |
joko |
1.2 |
# todo: maybe do diff(s) here sometimes!? |
270 |
joko |
1.10 |
sub _hash2object { |
271 |
joko |
1.2 |
my $object = shift; |
272 |
|
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my $data = shift; |
273 |
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my $options = shift; |
274 |
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275 |
joko |
1.3 |
#print "hash2object", "\n"; |
276 |
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|
277 |
joko |
1.2 |
# "patch" needed 'cause php passes numerical-indexed-arrays as hash-tables, |
278 |
|
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# this method corrects this |
279 |
joko |
1.10 |
numhash2list($data) if ($options->{php}); |
280 |
joko |
1.2 |
|
281 |
|
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# utf8-conversion/-encoding (essential for I18N) |
282 |
|
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var_utf2iso($data) if ($options->{utf8}); |
283 |
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284 |
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# get fresh object from database |
285 |
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# todo: |
286 |
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# - handle "locked" objects !!! |
287 |
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# - check if already another update occoured (object-revisioning needed!) |
288 |
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#my $obj = $self->getObject($oid); |
289 |
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|
290 |
|
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# mix changes into fresh object and save it back |
291 |
joko |
1.10 |
_hash2object_traverse_mixin($object, $data, 0, $options); |
292 |
joko |
1.2 |
|
293 |
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# done in core mixin function? |
294 |
|
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#$self->{storage}->update($obj); |
295 |
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296 |
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# we should "undef" some objects here to destroy them in memory and enforce reloading when used next time |
297 |
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# simulate: |
298 |
|
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#$self->{storage}->disconnect(); |
299 |
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|
300 |
|
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} |
301 |
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302 |
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# ------------------------------------ |
303 |
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# core mixin function |
304 |
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# TODO-FEATURE: make this possible in a reverse way: object is empty (no fields) and gets filled up by mixin-data |
305 |
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|
306 |
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# remember keys of structures we are traversing |
307 |
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# this is a HACK: |
308 |
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# - don't (!!!) "packageglobal" @indexstack |
309 |
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# - it will lead to problems with parallelism! |
310 |
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|
311 |
|
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#my @indexstack; |
312 |
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|
313 |
|
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# traverse a deeply nested structure, mix in values from given hash, update underlying tangram-object |
314 |
joko |
1.10 |
sub _hash2object_traverse_mixin { |
315 |
joko |
1.2 |
my $object = shift; |
316 |
|
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my $data = shift; |
317 |
|
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my $bool_recursion = shift; |
318 |
joko |
1.5 |
my $options = shift; |
319 |
joko |
1.2 |
|
320 |
|
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# clear our key - stack if we are called from user-code (non-recursively) |
321 |
|
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@indexstack = () if (!$bool_recursion); |
322 |
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|
323 |
|
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my $classname = ref $object; |
324 |
|
|
# if ($classname) { |
325 |
|
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# print STDERR "*****************", Dumper(Class::Tangram::attribute_types($classname)), "\n"; |
326 |
|
|
# } |
327 |
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|
328 |
|
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# parser: detected OBJECT (a Tangram one?) (reftype == HASH) (assume) |
329 |
|
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# what's exactly done here? hmmm.... it works ;) |
330 |
|
|
# maybe a HACK: please try not to use "IntrHash"es, maybe this cannot handle them!!! |
331 |
|
|
# extend! check! |
332 |
joko |
1.10 |
|
333 |
|
|
#print attributes::reftype($object), "\n"; |
334 |
|
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|
335 |
|
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# V1 |
336 |
|
|
#if ((attributes::reftype($object) eq 'HASH') && (ref($object) ne 'HASH') && (ref($object) ne 'ARRAY')) { |
337 |
|
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# V2 |
338 |
|
|
my $reftype = attributes::reftype($object); |
339 |
|
|
#print "reftype: '$reftype'", "\n"; |
340 |
|
|
if ($reftype eq 'HASH') { |
341 |
joko |
1.2 |
|
342 |
|
|
# print STDERR "===", "reftype: ", attributes::reftype($obj), "\n"; |
343 |
|
|
|
344 |
joko |
1.5 |
my @fields; |
345 |
joko |
1.2 |
# loop through fields of object (Tangram-object) |
346 |
joko |
1.5 |
@fields = keys %{$object}; |
347 |
|
|
|
348 |
|
|
# loop through fields of to.be.injected-data (arbitrary Perl-data-structure) |
349 |
|
|
@fields = keys %{$data} if $options->{init}; |
350 |
jonen |
1.6 |
# @fields = keys %{$data} if $options->{mixin}; |
351 |
joko |
1.5 |
|
352 |
|
|
foreach (@fields) { |
353 |
joko |
1.7 |
my $field = $_; |
354 |
|
|
push @indexstack, $field; |
355 |
joko |
1.2 |
|
356 |
|
|
# determine type of object |
357 |
joko |
1.7 |
my $ref = ref $object->{$field}; |
358 |
joko |
1.2 |
# print STDERR "attrname: $_ ATTRref: $ref", "\n"; |
359 |
|
|
if ($ref) { |
360 |
joko |
1.10 |
_hash2object_traverse_mixin($object->{$field}, $data, 1, $options); |
361 |
joko |
1.2 |
} else { |
362 |
joko |
1.10 |
my $val = ref_slot($data, \@indexstack); |
363 |
joko |
1.7 |
|
364 |
joko |
1.8 |
#print Dumper($options); |
365 |
joko |
1.7 |
my $field_target = $field; |
366 |
|
|
if (my $pattern = $options->{pattern_strip_key}) { |
367 |
|
|
print "pattern: $pattern", "\n"; |
368 |
|
|
$field_target =~ s/$pattern//; |
369 |
|
|
print "field: $field_target", "\n"; |
370 |
|
|
} |
371 |
|
|
|
372 |
|
|
$object->{$field_target} = $val if defined $val; |
373 |
joko |
1.2 |
} |
374 |
|
|
pop @indexstack; |
375 |
|
|
} |
376 |
|
|
|
377 |
|
|
# save object to database ... |
378 |
|
|
# ... do an update if it already exists, do an insert if it doesn't |
379 |
|
|
# my $objectId = $self->{storage}->id($obj); |
380 |
|
|
# $logger->debug( __PACKAGE__ . "->saveObjectFromHash_traverse_mixin_update( object $obj objectId $objectId )" ); |
381 |
|
|
# if ($objectId) { |
382 |
|
|
# $self->{storage}->update($obj); |
383 |
|
|
|
384 |
|
|
#print __PACKAGE__ . ":", "\n"; |
385 |
|
|
#print Dumper($object); |
386 |
|
|
|
387 |
|
|
# } else { |
388 |
|
|
# $self->{storage}->insert($obj); |
389 |
|
|
# } |
390 |
|
|
|
391 |
|
|
} |
392 |
|
|
|
393 |
|
|
#&& ( ref($obj) ne 'HASH' ) |
394 |
|
|
|
395 |
|
|
# loop through entries of array (IntrArray, isn't it?) |
396 |
|
|
if ((ref $object) eq 'ARRAY') { |
397 |
|
|
# print STDERR "===", "refttype ", attributes::reftype($obj), "\n"; |
398 |
|
|
my $i = 0; |
399 |
|
|
foreach (@{$object}) { |
400 |
|
|
push @indexstack, $i; |
401 |
|
|
my $ref = ref $_; |
402 |
|
|
# print STDERR "attrname: $_ ATTRref: $ref", "\n"; |
403 |
jonen |
1.6 |
# if ($ref && $_) { |
404 |
|
|
if ($ref) { |
405 |
joko |
1.10 |
_hash2object_traverse_mixin($_, $data, 1, $options); |
406 |
joko |
1.2 |
} else { |
407 |
jonen |
1.6 |
$object->[$i] = $_ if defined $_; |
408 |
joko |
1.2 |
} |
409 |
|
|
pop @indexstack; |
410 |
|
|
$i++; |
411 |
|
|
} |
412 |
joko |
1.10 |
|
413 |
|
|
=pod |
414 |
|
|
# object? |
415 |
|
|
} else { |
416 |
|
|
print "reference: ", ref $object, "\n"; |
417 |
|
|
print "reftype: ", $reftype, "\n"; |
418 |
|
|
die(__PACKAGE__ . "->_hash2object_traverse_mixin: can not handle this!"); |
419 |
|
|
=cut |
420 |
|
|
|
421 |
joko |
1.2 |
} |
422 |
|
|
|
423 |
|
|
} |
424 |
|
|
|
425 |
|
|
|
426 |
joko |
1.10 |
# ACK's go to Randal L. Schwartz <merlyn@stonehenge.com> |
427 |
|
|
# on the website: |
428 |
|
|
# This text is copyright by Miller-Freeman, Inc., and is used with their permission. |
429 |
|
|
# Further distribution or use is not permitted. |
430 |
|
|
# please visit http://www.stonehenge.com/merlyn/UnixReview/col30.html |
431 |
|
|
sub deep_copy1 { |
432 |
|
|
my $this = shift; |
433 |
|
|
if (not ref $this) { |
434 |
|
|
$this; |
435 |
|
|
} elsif (ref $this eq "ARRAY") { |
436 |
|
|
[map deep_copy1($_), @$this]; |
437 |
|
|
} elsif (ref $this eq "HASH") { |
438 |
|
|
+{map { $_ => deep_copy1($this->{$_}) } keys %$this}; |
439 |
|
|
} elsif (ref $this eq "CODE") { |
440 |
|
|
$this; |
441 |
|
|
} else { die "deep_copy1 asks: what type is $this?" } |
442 |
|
|
#} else { print "deep_copy asks: what type is $this?", "\n"; } |
443 |
joko |
1.2 |
} |
444 |
|
|
|
445 |
joko |
1.10 |
# ACK's go to Andrew Pitonyak |
446 |
|
|
# Copyright 2002, Andrew Pitonyak (perlboy@pitonyak.org) |
447 |
|
|
# please visit: http://www.pitonyak.org/code/perl/Pitonyak/DeepCopy.pm.html |
448 |
joko |
1.7 |
sub deep_copy { |
449 |
joko |
1.12 |
Pitonyak::DeepCopy::deep_copy(@_); |
450 |
joko |
1.1 |
} |
451 |
joko |
1.12 |
|
452 |
joko |
1.1 |
|
453 |
|
|
1; |
454 |
joko |
1.10 |
__END__ |