/[cvs]/nfo/perl/libs/Data/Transfer/Sync/API.pm
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revision 1.4 by joko, Sun Feb 9 05:03:02 2003 UTC revision 1.7 by joko, Fri Feb 21 08:00:24 2003 UTC
# Line 6  Line 6 
6  ##  ##
7  ##    ----------------------------------------------------------------------------------------  ##    ----------------------------------------------------------------------------------------
8  ##    $Log$  ##    $Log$
9    ##    Revision 1.7  2003/02/21 08:00:24  joko
10    ##    debugging
11    ##
12    ##    Revision 1.6  2003/02/14 12:58:47  joko
13    ##    + re-enabled the erase-mechanism
14    ##
15    ##    Revision 1.5  2003/02/11 05:26:04  joko
16    ##    + sub _tellWhatIWillDo
17    ##    + re-enabled "branch to execution path for special targets" mechanism
18    ##
19  ##    Revision 1.4  2003/02/09 05:03:02  joko  ##    Revision 1.4  2003/02/09 05:03:02  joko
20  ##    + minor fix regarding namespace of api versioning extension module  ##    + minor fix regarding namespace of api versioning extension module
21  ##  ##
# Line 66  sub _loadVersionExtensions { Line 76  sub _loadVersionExtensions {
76  sub configure {  sub configure {
77    my $self = shift;    my $self = shift;
78    
 #print "YAI\n";  
 #print Dumper(@_);  
 #exit;  
   
79    $logger->debug( __PACKAGE__ . "->configure");    $logger->debug( __PACKAGE__ . "->configure");
80    
81    my @args = @_;    my @args = @_;
82    
 #print Dumper(@args);  
   
83    if (!isEmpty(\@args)) {    if (!isEmpty(\@args)) {
84      my %properties = @_;      my %properties = @_;
85      # merge args to properties      # merge args to properties
# Line 150  sub syncNodes { Line 154  sub syncNodes {
154    my $self = shift;    my $self = shift;
155    my $args = shift;    my $args = shift;
156    
157      #$logger->notice( "==========================   " . __PACKAGE__ . "->syncNodes   ==============");
158    $logger->debug( __PACKAGE__ . "->syncNodes: starting" );    $logger->debug( __PACKAGE__ . "->syncNodes: starting" );
159    
160  #print Dumper($self);  #print Dumper($self);
# Line 158  sub syncNodes { Line 163  sub syncNodes {
163  #print Dumper($self->{options});  #print Dumper($self->{options});
164    $self->_prepareOptions();    $self->_prepareOptions();
165    
166  #print Dumper($self->{options});    # trace
167        #print Dumper($self->{options});
168        #exit;
169    
170    if (!$self->checkOptions()) {    if (!$self->checkOptions()) {
171      $logger->critical( __PACKAGE__ . "->syncNodes: 'Data::Transfer::Sync::checkOptions' failed.");      $logger->critical( __PACKAGE__ . "->syncNodes: 'Data::Transfer::Sync::checkOptions' failed.");
# Line 170  sub syncNodes { Line 177  sub syncNodes {
177      return;      return;
178    }    }
179    
180      #print Dumper($args);
181    
182    # remember arguments through the whole processing    # remember arguments through the whole processing
183    $self->{args} = $args;    $self->{args} = $args;
184    
# Line 179  sub syncNodes { Line 188  sub syncNodes {
188    # hash to sum up results    # hash to sum up results
189    # TODO: re-implement! (sync-statistics???)    # TODO: re-implement! (sync-statistics???)
190    
191      #print Dumper($self->{options}->{process});
192    
193    # detect synchronization method to determine which optical symbol (directed arrow) to use    # detect synchronization method to determine which optical symbol (directed arrow) to use
194    my $mode = $self->{args}->{mode};   # V1    my $mode = $self->{args}->{mode};   # V1
195    $mode ||= $self->{options}->{process}->{mode};    # V2    $mode ||= $self->{options}->{process}->{mode};    # V2
# Line 199  sub syncNodes { Line 210  sub syncNodes {
210      $self->options2metadata();      $self->options2metadata();
211      $self->options2metadata_accessor();      $self->options2metadata_accessor();
212    
213      # branch to execution path for special targets
214      # detect for option 'handler' which could be a CODEref
215        if ($self->{options}->{handler} && ref $self->{options}->{handler} eq 'CODE') {
216          $logger->info( __PACKAGE__ . "->syncNodes: Running (special handler code - no generic sync!) on '$self->{options}->{target}->{dbKey}' with MODE $self->{options}->{process}->{mode}, NODE $self->{options}->{target}->{address}");
217          #print Dumper($self);
218          #exit;
219          # don't do this any more - it wasn't very nice somehow ...
220          #$self->{options}->{handler}->($self->{app}, $self->{options});
221          # .... now: better let the parent application scope handle this via callback
222            # not any more required for this: $self->{app} inside here (which isn't the app we mean here)
223            # required for this: getting the options out of here: establish some getter method! ($self->getOptions(...))
224            # so....
225            #$self->{__bridge}->{parent_ref}->
226          
227          # ahh okay, DesignPattern::Bridge moves closer to some Class::Inner!???
228            # so...
229            # similar like above - but it isn't very nice anyway ...  (no privateness, but: who cares?)
230            #print Dumper($self->{__bridge});
231            # just take the global application instance and
232            # throw it into the context of the mapping module - this is heavy!  ;-) (but again, who cares...)
233            # TODO: handle this more abstract *sometime*
234            #$self->{options}->{handler}->($self->{__bridge}->{parent}->{app}, $self->{options});
235            $self->{options}->{handler}->($self->{__bridge}->{parent}->{process}, $self->{options});
236          
237          return;
238        }
239    
240      # TODO: execution path branch V2!!!
241        # option1: wrap this via callback to parent scope (like current impl. mechanism)
242        # option2: branch directly from here (this needs refactoring of the sub handler)
243    
244    # tracing    # tracing
245      #print Dumper($self);      #print Dumper($self);
246      #exit;      #exit;
247    
248    $logger->info( __PACKAGE__ . "->syncNodes: source=$self->{meta}->{source}->{dbKey}/$self->{meta}->{source}->{nodeName} [$self->{meta}->{source}->{nodeType}] $direction_arrow target=$self->{meta}->{target}->{dbKey}/$self->{meta}->{target}->{nodeName} [$self->{meta}->{target}->{nodeType}]" );    # V1:
249      $logger->debug( __PACKAGE__ . "->syncNodes: source=$self->{meta}->{source}->{dbKey}/$self->{meta}->{source}->{nodeName} [$self->{meta}->{source}->{nodeType}] $direction_arrow target=$self->{meta}->{target}->{dbKey}/$self->{meta}->{target}->{nodeName} [$self->{meta}->{target}->{nodeType}]" );
250      
251      # V2:
252      my $what = "$self->{meta}->{source}->{dbKey}/$self->{meta}->{source}->{nodeName} [$self->{meta}->{source}->{nodeType}] $direction_arrow $self->{meta}->{target}->{dbKey}/$self->{meta}->{target}->{nodeName} [$self->{meta}->{target}->{nodeType}]";
253      #my $header = ("~.." x 7) . "  " . $what . "  " . ("~.." x 4);
254      #my $header = ("= " x 7) . "  " . $what . "  " . ("= " x 4);
255      #my $header = ("~=-_-=" x 3) . "  " . $what . "  " . ("~=-_-=" x 4);
256      my $header = ("_-=~=-" x 4) . "  " . $what . "  " . ("_-=~=-" x 4);
257      $logger->notice($header);
258    
259    
260    return if !$self->buildFieldmapping();    return if !$self->buildFieldmapping();
261    return if !$self->_touchNodeSet();    return if !$self->_touchNodeSet();
262    return if !$self->_prepare_sync();    return if !$self->_prepare_sync();
263      $self->_tellWhatIWillDo();
264    
265    # tracing    # tracing
266      #print Dumper($self);      #print Dumper($self);
# Line 223  sub syncNodes { Line 276  sub syncNodes {
276  }  }
277    
278    
279    my $c_string_default = '';
280    sub c_string {
281      my $value = shift;
282      $value ||= "[$c_string_default]";
283      return $value;
284    }
285    
286    sub _tellWhatIWillDo {
287      my $self = shift;
288    
289    
290    #return;
291      
292      # trace
293        #print Dumper($self->{meta});
294        #exit;
295      
296      $c_string_default = 'n/a';
297      my $source = c_string($self->{opt}->{'source'});
298      my $source_node = c_string($self->{opt}->{'source-node'});
299      my $source_type = c_string($self->{opt}->{'source-type'});
300      my $target = c_string($self->{opt}->{'target'});
301      my $target_node = c_string($self->{opt}->{'target-node'});
302      my $target_type = c_string($self->{opt}->{'target-type'});
303      
304      my $mapping_module = c_string($self->{opt}->{'mapping-module'});
305      my $mode = uc c_string($self->{opt}->{'mode'});
306    
307      #my $ql = "$mode INTO $source NODE $source_node TYPE $source_type SELECT NODE $target_node TYPE $target_type FROM $target USING MODULE $mapping_module;";
308      #$logger->notice( __PACKAGE__ . ": $ql" );
309      my $ql = <<EOT;
310    
311      FETCH DATA
312        FROM STORAGE $self->{meta}->{source}->{dbKey}
313        AT NODE $self->{meta}->{source}->{accessorName}.$self->{meta}->{source}->{nodeName}
314        USING IDENTIFIER $self->{meta}->{source}->{IdentProvider}->{method}.$self->{meta}->{source}->{IdentProvider}->{arg}
315      CONVERT DATA
316        CAST FROM $self->{meta}->{source}->{nodeType} TO $self->{meta}->{target}->{nodeType}
317        MAP ATTRIBUTES FROM @{$self->{meta}->{source}->{childnodes}} TO @{$self->{meta}->{target}->{childnodes}}
318      STORE DATA
319        TO STORAGE $self->{meta}->{target}->{dbKey}
320        AT NODE $self->{meta}->{target}->{accessorName}.$self->{meta}->{target}->{nodeName}
321        USING IDENTIFIER $self->{meta}->{target}->{IdentProvider}->{method}.$self->{meta}->{target}->{IdentProvider}->{arg}
322    EOT
323      
324      
325      chomp($ql);
326      $logger->info($ql);
327      
328      #exit;
329      return;
330      
331      my $actioning = ucfirst $self->{opt}->{'action'} . 'ing';
332      
333      # FIXME: this is weird!
334      my $long = <<EOT;
335    
336        - $actioning data of type $target_type and
337          filtered by $target_node from the storage named $target
338          to the storage named $source - filtered by $source_node.
339        - Will attempt to convert the data to $source_type.
340    EOT
341      chomp($long);
342      $logger->notice( __PACKAGE__ . ": $long" );
343      
344    }
345    
346    
347  sub _prepareOptions {  sub _prepareOptions {
348    
349    my $self = shift;    my $self = shift;
# Line 311  sub _prepareOptions { Line 432  sub _prepareOptions {
432    # merging - V2    # merging - V2
433    
434      # merge local map with local opts      # merge local map with local opts
435        
436          # delete undef'd items in $map
437        
438        # enable cloning        # enable cloning
439        # FIXME: do we really need cloning here? trade safety/encapsulation for speed?        # FIXME: do we really need cloning here? trade safety/encapsulation for speed?
440        Hash::Merge::set_clone_behavior(1);        Hash::Merge::set_clone_behavior(1);
441        Hash::Merge::set_behavior( 'RIGHT_PRECEDENT' );        Hash::Merge::set_behavior( 'RIGHT_PRECEDENT' );
442          #Hash::Merge::set_behavior( 'STORAGE_PRECEDENT' );
443          #Hash::Merge::set_behavior( 'RETAINMENT_PRECEDENT' );
444          # TODO: add an option to Hash::Merge not to overwrite set items with undefined/empty/not assigned ones
445        my $locals_merged = merge( $opts, $map );        my $locals_merged = merge( $opts, $map );
446    
447      # trace      # trace
# Line 400  sub _prepare_sync { Line 527  sub _prepare_sync {
527      # TODO: introduce different mechanism to make more then two partners (descents) possible      # TODO: introduce different mechanism to make more then two partners (descents) possible
528      ($self->{meta}->{source}, $self->{meta}->{target}) =      ($self->{meta}->{source}, $self->{meta}->{target}) =
529          ($self->{meta}->{target}, $self->{meta}->{source});          ($self->{meta}->{target}, $self->{meta}->{source});
530        #($self->{options}->{source}, $self->{options}->{target}) =
531        #    ($self->{options}->{target}, $self->{options}->{source});
532        
533    } elsif (lc $self->{options}->{process}->{mode} eq 'full') {    } elsif (lc $self->{options}->{process}->{mode} eq 'full') {
534      # TODO:      # TODO:
# Line 413  sub _prepare_sync { Line 542  sub _prepare_sync {
542    
543    # import flag means: prepare the source node to be syncable    # import flag means: prepare the source node to be syncable
544    # this is useful if there are e.g. no "ident" or "checksum" columns yet inside a DBI like (row-based) storage    # this is useful if there are e.g. no "ident" or "checksum" columns yet inside a DBI like (row-based) storage
545    if ($self->{args}->{prepare}) {    if ($self->{options}->{process}->{prepare}) {
546      $self->_prepareNode_MetaProperties('source');      $self->_prepareNode_MetaProperties('source');
547      $self->_prepareNode_DummyIdent('source');      $self->_prepareNode_DummyIdent('source');
548      #return;      #return;
# Line 422  sub _prepare_sync { Line 551  sub _prepare_sync {
551        
552    # erase flag means: erase the target    # erase flag means: erase the target
553    #if ($opts->{erase}) {    #if ($opts->{erase}) {
554    if ($self->{args}->{erase}) {    if ($self->{options}->{process}->{erase}) {
555      # TODO: move this method to the scope of the synchronization core and wrap it around different handlers      # TODO: move this method to the scope of the synchronization core and wrap it around different handlers
556      #print "ERASE", "\n";      #print "ERASE", "\n";
557      $self->_erase_all('target');      $self->_erase_all('target');
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