1 |
joko |
1.11 |
## ------------------------------------------------------------------------ |
2 |
joko |
1.16 |
## $Id: Abstract.pm,v 1.15 2003/02/20 20:19:13 joko Exp $ |
3 |
joko |
1.11 |
## ------------------------------------------------------------------------ |
4 |
joko |
1.7 |
## $Log: Abstract.pm,v $ |
5 |
joko |
1.16 |
## Revision 1.15 2003/02/20 20:19:13 joko |
6 |
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## tried to get auto-disconnect working again - failed with that |
7 |
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## |
8 |
joko |
1.15 |
## Revision 1.14 2003/02/09 05:12:28 joko |
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## + quoting of strings used in sql-queries! |
10 |
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## |
11 |
joko |
1.14 |
## Revision 1.13 2003/01/30 22:27:05 joko |
12 |
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## + added new abstract methods |
13 |
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## |
14 |
joko |
1.13 |
## Revision 1.12 2003/01/30 21:46:32 joko |
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## + fixed behaviour of AUTOLOAD-method |
16 |
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## |
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joko |
1.12 |
## Revision 1.11 2003/01/20 16:43:18 joko |
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## + better argument-property merging |
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## + debugging-output !!! |
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## + abstract-dummy 'sub createChildNode' |
21 |
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## |
22 |
joko |
1.11 |
## Revision 1.10 2003/01/19 02:31:51 joko |
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## + fix to 'sub AUTOLOAD' |
24 |
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## |
25 |
joko |
1.10 |
## Revision 1.9 2002/12/19 16:30:23 joko |
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## + added 'sub dropDb' and 'sub rebuildDb' as croakers for concrete implementations of methods in proper handlers |
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## |
28 |
joko |
1.9 |
## Revision 1.8 2002/12/13 21:48:35 joko |
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## + sub _abstract_function |
30 |
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## |
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joko |
1.8 |
## Revision 1.7 2002/12/05 07:57:48 joko |
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## + now using Tie::SecureHash as a base for the COREHANDLE |
33 |
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## + former public COREHANDLE becomes private _COREHANDLE now |
34 |
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## |
35 |
joko |
1.7 |
## Revision 1.6 2002/12/03 15:52:24 joko |
36 |
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## + fix/feature: if dispatching to deep core method fails (is not declared), try method at Data::Storage - level |
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## |
38 |
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## Revision 1.5 2002/12/01 22:19:33 joko |
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## + just disconnect if COREHANDLE exists |
40 |
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## |
41 |
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## Revision 1.4 2002/12/01 04:45:38 joko |
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## + sub eraseAll |
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## + sub createDb |
44 |
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## |
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## Revision 1.3 2002/11/29 04:58:20 joko |
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## + Storage::Result now uses the same dispatching mechanism like Storage::Handler |
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## |
48 |
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## Revision 1.2 2002/10/17 00:08:07 joko |
49 |
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## + bugfixes regarding "deep recursion" stuff |
50 |
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## |
51 |
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## Revision 1.1 2002/10/10 03:44:07 cvsjoko |
52 |
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## + new |
53 |
joko |
1.11 |
## ------------------------------------------------------------------------ |
54 |
joko |
1.7 |
|
55 |
cvsjoko |
1.1 |
|
56 |
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package Data::Storage::Handler::Abstract; |
57 |
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58 |
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use strict; |
59 |
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use warnings; |
60 |
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61 |
joko |
1.8 |
use base qw( DesignPattern::Object ); |
62 |
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63 |
joko |
1.11 |
|
64 |
cvsjoko |
1.1 |
use Data::Dumper; |
65 |
joko |
1.7 |
use Tie::SecureHash; |
66 |
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#use Data::Storage::Handler; |
67 |
joko |
1.15 |
use Hash::Merge qw( merge ); |
68 |
joko |
1.11 |
|
69 |
joko |
1.16 |
#use Log::Dispatch::Config; |
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#Log::Dispatch::Config->configure(); |
71 |
cvsjoko |
1.1 |
|
72 |
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# get logger instance |
73 |
joko |
1.16 |
my $logger; |
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eval('$logger = Log::Dispatch::Config->instance;'); |
75 |
cvsjoko |
1.1 |
|
76 |
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#our $lock_info; |
77 |
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sub new { |
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my $invocant = shift; |
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my $class = ref($invocant) || $invocant; |
81 |
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# logging info about the actual handler called |
83 |
joko |
1.16 |
$logger->debug( "$invocant->new( @_ )" ) if $logger; |
84 |
joko |
1.2 |
#$logger->debug( __PACKAGE__ . "->" . "new()" ); |
85 |
cvsjoko |
1.1 |
|
86 |
joko |
1.7 |
# V1 - arguments become properties automagically / normal perl mode blessing |
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=pod |
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# autovivify passed-in arguments as future object attributes into to-be-blessed hash |
89 |
joko |
1.3 |
my $self = { @_ }; |
90 |
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# create object from blessed hash-reference |
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bless $self, $class; |
92 |
joko |
1.7 |
=cut |
93 |
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94 |
joko |
1.10 |
#=pod |
95 |
joko |
1.7 |
# V2 - maybe more convenient/secure? utilizing Damian Conway's Tie::SecureHash... |
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my $self = Tie::SecureHash->new( |
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$class, |
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# that's it: |
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'metainfo' => undef, |
100 |
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'lock_info' => undef, |
101 |
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'_COREHANDLE' => undef, |
102 |
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'meta' => undef, |
103 |
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'locator' => undef, |
104 |
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'dataStorageLayer' => undef, |
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'dbi' => undef, |
106 |
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# tries: |
107 |
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#'Data::Storage::Handler::Abstract::metainfo' => undef, |
108 |
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#'dataStorageLayer' |
109 |
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#'Data::Storage::Handler::Abstract::dataStorageLayer' => undef, |
110 |
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#'Data::Storage::Handler::Tangram::dataStorageLayer' => undef, |
111 |
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#'Data::Dumper::locator' => undef, |
112 |
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#$class . '::locator' => undef, |
113 |
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#'Data::Storage::Handler::Tangram::locator' => undef, |
114 |
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#'Data::Storage::Handler::DBI::locator' => undef, |
115 |
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#_protected => , |
116 |
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#__private => , |
117 |
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); |
118 |
joko |
1.10 |
#=cut |
119 |
joko |
1.7 |
|
120 |
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# merge passed-in arguments to constructor as properties into already blessed secure object |
121 |
joko |
1.11 |
|
122 |
joko |
1.7 |
# mungle arguments from array into hash - perl does the job ;) |
123 |
joko |
1.11 |
#my %args = @_; |
124 |
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#my %args = (); |
125 |
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126 |
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#print Dumper(@_); |
127 |
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128 |
joko |
1.7 |
# merge attributes one-by-one |
129 |
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# TODO: deep_copy? / merge_deep? |
130 |
joko |
1.11 |
while (my $elemName = shift @_) { |
131 |
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#print "elemName: $elemName", "\n"; |
132 |
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if (my $elemValue = shift @_) { |
133 |
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#print Dumper($elemValue); |
134 |
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#print "elemName=$elemName, elemValue=$elemValue", "\n"; |
135 |
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$self->{$elemName} = $elemValue; |
136 |
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} |
137 |
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#$self->{$_} = $args{$_}; |
138 |
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#$self->{$_} = $args{$_}; |
139 |
joko |
1.7 |
} |
140 |
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141 |
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# V3 - rolling our own security (just for {COREHANDLE} - nothing else) - nope, Tie::SecureHash works wonderful |
142 |
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#my $self = { @_ }; |
143 |
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#bless $self, $class; |
144 |
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145 |
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146 |
joko |
1.3 |
|
147 |
cvsjoko |
1.1 |
# handle meta data |
148 |
joko |
1.3 |
#my $metainfo = $self->getMetaInfo($class); |
149 |
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my $metainfo = $self->getMetaInfo(); |
150 |
cvsjoko |
1.1 |
if (!$metainfo->{disconnectMethod}) { $metainfo->{disconnectMethod} = 'disconnect'; } |
151 |
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# type? |
152 |
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$invocant =~ s/Data::Storage::Handler:://; |
153 |
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$metainfo->{type} = $invocant; |
154 |
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155 |
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# direct accessible (non-protected) properties ( was: my $self = { }; ) |
156 |
joko |
1.3 |
$self->{metainfo} = $metainfo; |
157 |
cvsjoko |
1.1 |
|
158 |
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return $self; |
159 |
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} |
160 |
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161 |
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162 |
joko |
1.10 |
# TODO: use NEXT.pm inside this mechanism (to avoid repetitions...) |
163 |
cvsjoko |
1.1 |
sub AUTOLOAD { |
164 |
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165 |
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# recursion problem to be avoided here!!! |
166 |
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167 |
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# - problem: we get recursion-hangs!!! => perl stops with ... |
168 |
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# "Deep recursion on subroutine "Data::Storage::Handler::Abstract::AUTOLOAD" at [...]/libs/Data/Storage.pm line 38." |
169 |
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170 |
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# - when: if we log to ourselves as a storage-implementation (e.g. via Log::Dispatch::Tangram) |
171 |
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# - why: debug-messages are on a very low level including every data-operation to "Data::Storage(::Handler::X)", |
172 |
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# so e.g. a "$storage->insert" would trigger another "$storage->insert" itself |
173 |
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# which leads to a infinite recursion loop (deep recursion) |
174 |
joko |
1.2 |
# - solution: locks! (by Hack or (maybe) via Perl "local"s) |
175 |
cvsjoko |
1.1 |
|
176 |
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my $self = shift; |
177 |
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178 |
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our $AUTOLOAD; |
179 |
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#return if $AUTOLOAD =~ m/::DESTROY$/; |
180 |
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181 |
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# find out methodname |
182 |
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my $methodname = $AUTOLOAD; |
183 |
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$methodname =~ s/^.*:://; |
184 |
joko |
1.7 |
|
185 |
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#print "method: $methodname", "\n"; |
186 |
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187 |
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# TODO: document this! handler-private methods listed here will not be triggered (internal use) |
188 |
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# in this case, "exists" is a method reserved for Tie::SecureHash, |
189 |
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# which encapsulates the perl data structure (HASH) under this object |
190 |
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# this is to prevent deep recursion's |
191 |
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return if lc $methodname eq 'exists'; |
192 |
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193 |
joko |
1.12 |
#print "$methodname - 1", "\n"; |
194 |
joko |
1.7 |
|
195 |
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# TODO: enhance logging/debugging |
196 |
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#if (!$self->exists('COREHANDLE')) { return; } |
197 |
cvsjoko |
1.1 |
|
198 |
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# handle locking (hack) |
199 |
joko |
1.10 |
if ($self->can('exists') && $self->exists('lock_info') && $self->{lock_info}->{last_method} && $methodname eq $self->{lock_info}->{last_method}) { |
200 |
cvsjoko |
1.1 |
$self->{lock_info}->{log_lock} = 1; |
201 |
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} else { |
202 |
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$self->{lock_info}->{log_lock} = 0; |
203 |
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} |
204 |
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$self->{lock_info}->{last_method} = $methodname; |
205 |
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206 |
joko |
1.12 |
#print "$methodname - 2", "\n"; |
207 |
joko |
1.7 |
|
208 |
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#print Dumper($self); |
209 |
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#exit; |
210 |
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211 |
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# get corehandle instance from underlying handler |
212 |
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my $core = $self->getCOREHANDLE(); |
213 |
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214 |
cvsjoko |
1.1 |
# test for COREHANDLE |
215 |
joko |
1.7 |
#if (!$self->{_COREHANDLE}) { |
216 |
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#=pod |
217 |
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#if (!$self->exists('_COREHANDLE')) { |
218 |
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#if (!$self->{_COREHANDLE}) { |
219 |
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if (!$core) { |
220 |
joko |
1.10 |
|
221 |
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#print Dumper($self); |
222 |
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#exit; |
223 |
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224 |
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my $handlertype = $self->{metainfo}->{type}; |
225 |
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$handlertype ||= ''; |
226 |
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227 |
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my $err_msg_core = __PACKAGE__ . "[$handlertype]" . ": " . "COREHANDLE is undefined while trying to execute method \"$methodname\""; |
228 |
joko |
1.12 |
|
229 |
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#print $err_msg_core, "\n"; |
230 |
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231 |
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#if ($self->exists('lock_info') && !$self->{lock_info}->{log_lock}) { |
232 |
joko |
1.7 |
$logger->error( $err_msg_core ); |
233 |
joko |
1.12 |
#} |
234 |
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235 |
cvsjoko |
1.1 |
return; |
236 |
joko |
1.12 |
|
237 |
cvsjoko |
1.1 |
} |
238 |
joko |
1.7 |
#=cut |
239 |
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240 |
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#print "$methodname - 3", "\n"; |
241 |
cvsjoko |
1.1 |
|
242 |
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# try to dispatch method-call to Storage::Handler::* |
243 |
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#if ($self->can($methodname)) { |
244 |
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#$logger->debug( __PACKAGE__ . "[$self->{metainfo}->{type}]" . "->" . $methodname . "(@_)" ); |
245 |
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#my $res = $self->$methodname(@_); |
246 |
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#if ($res) { return $res; } |
247 |
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#} |
248 |
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249 |
joko |
1.7 |
#print "$methodname - 4", "\n"; |
250 |
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251 |
cvsjoko |
1.1 |
# try to dispatch method-call to COREHANDLE |
252 |
joko |
1.7 |
# was: |
253 |
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#my $core = $self->{_COREHANDLE}; |
254 |
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# is: |
255 |
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#my $core = $self->getCOREHANDLE(); |
256 |
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257 |
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#print Dumper($core); |
258 |
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#exit; |
259 |
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260 |
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# was: |
261 |
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#if ($self->{_COREHANDLE}->can($methodname) || $self->{_COREHANDLE}->can("AUTOLOAD")) { |
262 |
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# is: |
263 |
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if ($core->can($methodname) || $core->can("AUTOLOAD")) { |
264 |
cvsjoko |
1.1 |
#$logger->debug( __PACKAGE__ . "->" . $methodname . " (AUTOLOAD)" ); |
265 |
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#$lock_AUTOLOAD = 1 if ($methodname eq 'insert'); |
266 |
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if (!$self->{lock_info}->{log_lock}) { |
267 |
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#print "method: $methodname", "\n"; |
268 |
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$logger->debug( __PACKAGE__ . "[$self->{metainfo}->{type}]" . "->" . $methodname . "(@_)" ); |
269 |
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} else { |
270 |
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# AUTOLOAD - sub is locked to prevent deep recursions if (e.g.) db-inserts cause log-actions to same db itself |
271 |
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} |
272 |
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#$lock_AUTOLOAD = 0; |
273 |
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#$logger->log( level => 'debug', message => __PACKAGE__ . "->" . $methodname . " (AUTOLOAD)" ); |
274 |
joko |
1.3 |
|
275 |
joko |
1.7 |
#print "calling: $methodname", "\n"; |
276 |
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|
277 |
joko |
1.10 |
# method calls making it until here will get dispatched to the proper handler |
278 |
joko |
1.7 |
return $core->$methodname(@_); |
279 |
joko |
1.6 |
|
280 |
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} elsif ($self->can($methodname)) { |
281 |
joko |
1.10 |
# try to call specified method inside our or inherited module(s) scope(s) |
282 |
joko |
1.6 |
return $self->$methodname(@_); |
283 |
cvsjoko |
1.1 |
} |
284 |
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285 |
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} |
286 |
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287 |
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sub DESTROY { |
288 |
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my $self = shift; |
289 |
joko |
1.15 |
|
290 |
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return; |
291 |
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292 |
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$logger->debug( __PACKAGE__ . "[$self->{metainfo}->{type}]" . "->DESTROY" ); |
293 |
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294 |
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my $disconnectMethod = $self->{metainfo}->{disconnectMethod}; |
295 |
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print "meth: ", $disconnectMethod, "\n"; |
296 |
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297 |
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#$disconnectMethod && $self->{_COREHANDLE} && ( $self->{_COREHANDLE}->$disconnectMethod() ); |
298 |
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$self->{_COREHANDLE}->$disconnectMethod(); |
299 |
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#$self->$disconnectMethod(); |
300 |
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301 |
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#my $core1 = $self->getCOREHANDLE() if $self->can('getCOREHANDLE'); |
302 |
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#$core1->$disconnectMethod(); |
303 |
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304 |
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return; |
305 |
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306 |
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print "DESTROY-1", "\n"; |
307 |
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#if ($self->{__COREHANDLE}) { |
308 |
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#if ($self->exists('_COREHANDLE')) { |
309 |
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|
310 |
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# get corehandle instance from underlying handler |
311 |
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my $core; |
312 |
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$core = $self->getCOREHANDLE() if $self->can('getCOREHANDLE'); |
313 |
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314 |
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#if ($self->{STORAGEHANDLE}) { |
315 |
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if ($core) { |
316 |
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print "DESTROY-2", "\n"; |
317 |
cvsjoko |
1.1 |
$logger->debug( __PACKAGE__ . "[$self->{metainfo}->{type}]" . "->DESTROY" ); |
318 |
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319 |
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my $disconnectMethod = $self->{metainfo}->{disconnectMethod}; |
320 |
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321 |
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# call "disconnect" or alike on COREHANDLE |
322 |
|
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# was: $self->{COREHANDLE}->disconnect(); |
323 |
joko |
1.7 |
$disconnectMethod && $self->{_COREHANDLE} && ( $self->{_COREHANDLE}->$disconnectMethod() ); |
324 |
cvsjoko |
1.1 |
|
325 |
joko |
1.7 |
undef $self->{_COREHANDLE}; |
326 |
cvsjoko |
1.1 |
} |
327 |
|
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} |
328 |
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|
329 |
joko |
1.7 |
sub _typeCheck2 { |
330 |
cvsjoko |
1.1 |
my $type = shift; |
331 |
|
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print "type: $type"; |
332 |
|
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eval("use Data::Storage::$type;"); |
333 |
|
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} |
334 |
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335 |
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336 |
|
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# ==================================================== |
337 |
|
|
# PUBLIC METHODS |
338 |
|
|
# ==================================================== |
339 |
|
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|
340 |
joko |
1.3 |
sub existsChildNode { |
341 |
|
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my $self = shift; |
342 |
|
|
my $nodename = shift; |
343 |
joko |
1.14 |
|
344 |
|
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# TODO: don't use $self->{meta}->{childnodes} directly in here |
345 |
|
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# get it returned from $self->getChildNodes()!!! |
346 |
|
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|
347 |
|
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$logger->debug( __PACKAGE__ . "->existsChildNode( nodename=$nodename )" ); |
348 |
joko |
1.3 |
$self->getChildNodes() unless $self->{meta}->{childnodes}; |
349 |
joko |
1.14 |
|
350 |
|
|
# quote this, it might contain meta characters which don't work in a regex |
351 |
|
|
$nodename = quotemeta($nodename); |
352 |
|
|
|
353 |
|
|
# trace |
354 |
|
|
#print Dumper($self->{meta}); |
355 |
|
|
#print "nodename: $nodename", "\n"; |
356 |
|
|
|
357 |
|
|
# FIXME: use "/i" only on win32-systems! |
358 |
|
|
my $result = grep(m/$nodename/i, @{$self->{meta}->{childnodes}}); |
359 |
|
|
|
360 |
joko |
1.3 |
return $result; |
361 |
|
|
} |
362 |
cvsjoko |
1.1 |
|
363 |
joko |
1.3 |
sub connect_tmp { |
364 |
cvsjoko |
1.1 |
|
365 |
|
|
# my $self = shift; |
366 |
|
|
# my $connectionString = shift; |
367 |
|
|
# # todo: patch connectionString to $args |
368 |
|
|
# _typeCheck($self->{args}{type}); |
369 |
|
|
|
370 |
|
|
} |
371 |
|
|
|
372 |
joko |
1.3 |
|
373 |
|
|
# ==================================================== |
374 |
|
|
# CONCRETE METHOD DUMMIES (croaking via "$logger" by calling "_abstract_function") |
375 |
|
|
# ==================================================== |
376 |
|
|
|
377 |
|
|
# TODO: |
378 |
|
|
# - abstract "abstract methods" to list/hash to be used in AUTOLOAD |
379 |
|
|
# e.g.: my @ABSTRACT_METHODS = (qw( connect sendCommand getChildNodes )); |
380 |
joko |
1.4 |
# use Class::XYZ (Construct) |
381 |
joko |
1.3 |
# - build them via anonymous subs |
382 |
|
|
# - introduce them via symbols |
383 |
|
|
|
384 |
joko |
1.7 |
sub getCOREHANDLE { |
385 |
|
|
my $self = shift; |
386 |
|
|
$self->_abstract_function('getCOREHANDLE'); |
387 |
|
|
} |
388 |
|
|
|
389 |
cvsjoko |
1.1 |
sub sendCommand { |
390 |
|
|
my $self = shift; |
391 |
|
|
$self->_abstract_function('sendCommand'); |
392 |
joko |
1.11 |
} |
393 |
|
|
|
394 |
|
|
sub createChildNode { |
395 |
|
|
my $self = shift; |
396 |
|
|
$self->_abstract_function('createChildNode'); |
397 |
joko |
1.7 |
} |
398 |
|
|
|
399 |
|
|
sub existsChildNode_tmp { |
400 |
|
|
my $self = shift; |
401 |
|
|
$self->_abstract_function('existsChildNode'); |
402 |
cvsjoko |
1.1 |
} |
403 |
|
|
|
404 |
|
|
sub getChildNodes { |
405 |
|
|
my $self = shift; |
406 |
|
|
$self->_abstract_function('getChildNodes'); |
407 |
|
|
} |
408 |
|
|
|
409 |
|
|
sub configureCOREHANDLE { |
410 |
|
|
my $self = shift; |
411 |
|
|
$self->_abstract_function('configureCOREHANDLE'); |
412 |
|
|
} |
413 |
|
|
|
414 |
joko |
1.3 |
sub getMetaInfo { |
415 |
|
|
my $self = shift; |
416 |
|
|
$self->_abstract_function('getMetaInfo'); |
417 |
|
|
return; |
418 |
|
|
} |
419 |
|
|
|
420 |
|
|
sub getListUnfiltered { |
421 |
|
|
my $self = shift; |
422 |
|
|
$self->_abstract_function('getListUnfiltered'); |
423 |
|
|
return; |
424 |
|
|
} |
425 |
|
|
|
426 |
|
|
sub getListFiltered { |
427 |
|
|
my $self = shift; |
428 |
|
|
$self->_abstract_function('getListFiltered'); |
429 |
|
|
return; |
430 |
|
|
} |
431 |
|
|
|
432 |
|
|
sub sendQuery { |
433 |
|
|
my $self = shift; |
434 |
|
|
$self->_abstract_function('sendQuery'); |
435 |
|
|
return; |
436 |
|
|
} |
437 |
|
|
|
438 |
|
|
sub connect { |
439 |
|
|
my $self = shift; |
440 |
|
|
$self->_abstract_function('connect'); |
441 |
|
|
return; |
442 |
|
|
} |
443 |
|
|
|
444 |
|
|
sub testIntegrity { |
445 |
|
|
my $self = shift; |
446 |
|
|
$self->_abstract_function('testIntegrity'); |
447 |
|
|
return; |
448 |
|
|
} |
449 |
|
|
|
450 |
|
|
sub quoteSql { |
451 |
|
|
my $self = shift; |
452 |
|
|
$self->_abstract_function('quoteSql'); |
453 |
joko |
1.4 |
return; |
454 |
|
|
} |
455 |
|
|
|
456 |
|
|
sub eraseAll { |
457 |
|
|
my $self = shift; |
458 |
|
|
$self->_abstract_function('eraseAll'); |
459 |
|
|
return; |
460 |
|
|
} |
461 |
|
|
|
462 |
|
|
sub createDb { |
463 |
|
|
my $self = shift; |
464 |
|
|
$self->_abstract_function('createDb'); |
465 |
joko |
1.9 |
return; |
466 |
|
|
} |
467 |
|
|
|
468 |
|
|
sub dropDb { |
469 |
|
|
my $self = shift; |
470 |
|
|
$self->_abstract_function('dropDb'); |
471 |
|
|
return; |
472 |
|
|
} |
473 |
|
|
|
474 |
|
|
sub rebuildDb { |
475 |
|
|
my $self = shift; |
476 |
|
|
$self->_abstract_function('rebuildDb'); |
477 |
joko |
1.13 |
return; |
478 |
|
|
} |
479 |
|
|
|
480 |
|
|
sub getDbName { |
481 |
|
|
my $self = shift; |
482 |
|
|
$self->_abstract_function('getDbName'); |
483 |
|
|
return; |
484 |
|
|
} |
485 |
|
|
|
486 |
|
|
sub testAvailability { |
487 |
|
|
my $self = shift; |
488 |
|
|
$self->_abstract_function('testAvailability'); |
489 |
|
|
return; |
490 |
|
|
} |
491 |
|
|
|
492 |
|
|
sub isConnected { |
493 |
|
|
my $self = shift; |
494 |
|
|
$self->_abstract_function('isConnected'); |
495 |
|
|
return; |
496 |
|
|
} |
497 |
|
|
|
498 |
|
|
sub testDsn { |
499 |
|
|
my $self = shift; |
500 |
|
|
$self->_abstract_function('testDsn'); |
501 |
joko |
1.3 |
return; |
502 |
|
|
} |
503 |
|
|
|
504 |
|
|
1; |