/[cvs]/nfo/perl/libs/Data/Storage/Handler/Tangram.pm
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revision 1.18 by joko, Fri Dec 13 21:48:07 2002 UTC revision 1.29 by joko, Fri Feb 21 01:47:18 2003 UTC
# Line 3  Line 3 
3  #  $Id$  #  $Id$
4  #  #
5  #  $Log$  #  $Log$
6    #  Revision 1.29  2003/02/21 01:47:18  joko
7    #  purged old code
8    #  minor cosmetics
9    #
10    #  Revision 1.28  2003/02/20 20:20:26  joko
11    #  tried to get auto-disconnect working again - failed with that
12    #
13    #  Revision 1.27  2003/01/31 06:30:59  joko
14    #  + enabled 'sendQuery'
15    #
16    #  Revision 1.26  2003/01/30 22:29:47  joko
17    #  + fixed module usage (removed dependency on 'libp.pm')
18    #
19    #  Revision 1.25  2003/01/19 02:30:05  joko
20    #  + fix: modified call to '_initSchema'
21    #
22    #  Revision 1.24  2002/12/22 14:13:01  joko
23    #  + sub dropDb
24    #
25    #  Revision 1.23  2002/12/19 16:31:53  joko
26    #  +- renamed sub to 'rebuildDb'
27    #
28    #  Revision 1.22  2002/12/18 22:28:16  jonen
29    #  + added extended logging at 'getObjectByGuid()'
30    #
31    #  Revision 1.21  2002/12/16 22:20:49  jonen
32    #  + fixed bug at 'getObjectByGuid()'
33    #
34    #  Revision 1.20  2002/12/16 20:49:17  jonen
35    #  + added sub 'getObjectByGuid()'
36    #  + added functionality to use 'getObjectByGuid' at 'getObjectAsHash()'
37    #
38    #  Revision 1.19  2002/12/16 06:46:09  joko
39    #  + attempt to introduce a generic '_patchSchema' - cancelled!
40    #
41  #  Revision 1.18  2002/12/13 21:48:07  joko  #  Revision 1.18  2002/12/13 21:48:07  joko
42  #  + fix to 'sub sendQuery'  #  + fix to 'sub sendQuery'
43  #  #
# Line 13  Line 48 
48  #  + fix: encapsulated object-loading inside an 'eval'  #  + fix: encapsulated object-loading inside an 'eval'
49  #  #
50  #  Revision 1.15  2002/12/05 13:55:21  joko  #  Revision 1.15  2002/12/05 13:55:21  joko
51  #  + now utilizing 'object2hash' instead of 'var_deref'  #  + now utilizing 'expand' instead of 'var_deref'
52  #  + played around with having fresh-objects - no progress....  #  + played around with having fresh-objects - no progress....
53  #  #
54  #  Revision 1.14  2002/12/05 09:40:30  jonen  #  Revision 1.14  2002/12/05 09:40:30  jonen
# Line 86  use warnings; Line 121  use warnings;
121  use base ("Data::Storage::Handler");  use base ("Data::Storage::Handler");
122  use base ("Data::Storage::Handler::Abstract");  use base ("Data::Storage::Handler::Abstract");
123    
124  use Tangram;  
125  use Data::Dumper;  use Data::Dumper;
126  use libp qw( getNewPerlObjectByPkgName );  use Tangram;
127    
128    use DesignPattern::Object;
129  use Data::Storage::Result::Tangram;  use Data::Storage::Result::Tangram;
130  use Data::Compare::Struct qw( isEmpty );  use Data::Compare::Struct qw( isEmpty );
131  use Data::Transform::Deep qw( object2hash );  use Data::Transform::Deep qw( expand );
 use Data::Transform::Encode qw( var2utf8 );  
   
132    
133  # get logger instance  # get logger instance
134  my $logger = Log::Dispatch::Config->instance;  my $logger = Log::Dispatch::Config->instance;
# Line 114  sub _initSchema { Line 149  sub _initSchema {
149    my $self = shift;    my $self = shift;
150    $logger->debug( __PACKAGE__ . "->_initSchema()" );    $logger->debug( __PACKAGE__ . "->_initSchema()" );
151    #if (!$schema_tangram) {    #if (!$schema_tangram) {
152      my $obj = getNewPerlObjectByPkgName($self->{locator}->{schema}, { EXPORT_OBJECTS => $self->{locator}->{classnames}, want_transactions => $self->{locator}->{want_transactions} } );      #my $obj = getNewPerlObjectByPkgName($self->{locator}->{schema}, { EXPORT_OBJECTS => $self->{locator}->{classnames}, want_transactions => $self->{locator}->{want_transactions} } );
153        my $obj = DesignPattern::Object->fromPackage($self->{locator}->{schema}, { 'EXPORT_OBJECTS' => $self->{locator}->{classnames}, 'want_transactions' => $self->{locator}->{want_transactions} } );
154      $schema_tangram = $obj->getSchema();      $schema_tangram = $obj->getSchema();
155    #}    #}
156    if (!$schema_tangram) {    if (!$schema_tangram) {
157      $logger->error( __PACKAGE__ . "->_initSchema: No Schema available for $self->{schema}" );      $logger->error( __PACKAGE__ . "->_initSchema: No Schema available for $self->{schema}" );
158      return 0;      return 0;
159    }    }
160      #$self->_patchSchema();
161    return 1;    return 1;
162  }  }
163    
164    sub _patchSchema {
165      my $self = shift;
166      foreach (keys %{$schema_tangram->{classes}}) {
167        next if $schema_tangram->{classes}->{$_}->{abstract};
168        #next if ($_ ne 'TsBankAccount');
169        #$_ ne 'AbstractAccount' &&
170        print "class: $_", "\n";
171    #print Dumper($schema_tangram->{classes}->{$_});
172        # create new string property named 'guid'
173        my $tstring = Tangram::String->new();
174        $tstring->{name} = $tstring->{col} = 'guid';
175        # inject property into schema
176        #$schema_tangram->{classes}->{$_}->{root}->{SPECS}->[0]->{fields}->{string}->{$tstring->{name}} = $tstring;
177        print Dumper($schema_tangram->{classes}->{$_}->{root}->{SPECS}->[0]->{fields});
178      }
179    }
180    
181  sub connect {  sub connect {
182    
183      my $self = shift;      my $self = shift;
184            
185      my $dsn = shift;      my $dsn = shift;
186    
187    #print Dumper($self);
188    #exit;
189    
190        # TODO: re-enable
191      $dsn ||= $self->{locator}->{dbi}->{dsn};      $dsn ||= $self->{locator}->{dbi}->{dsn};
       
192      $logger->debug( __PACKAGE__ . "->connect( dsn $dsn )" );      $logger->debug( __PACKAGE__ . "->connect( dsn $dsn )" );
193            
194      #my $storage = Tangram::Relational->connect( $schema, $dsn );      #my $storage = Tangram::Relational->connect( $schema, $dsn );
# Line 142  sub connect { Line 200  sub connect {
200  #      return;  #      return;
201  #    }  #    }
202    
203      return unless $self->_initSchema();      #return unless $self->_initSchema();
204        $self->_initSchema();
205    
206      # create the main tangram storage object      # create the main tangram storage object
207      #$self->{COREHANDLE} = Tangram::Relational->connect( $schema, $dsn );      #$self->{COREHANDLE} = Tangram::Relational->connect( $schema, $dsn );
# Line 269  sub configureCOREHANDLE { Line 328  sub configureCOREHANDLE {
328    $logger->debug( __PACKAGE__ . "->configureCOREHANDLE" );    $logger->debug( __PACKAGE__ . "->configureCOREHANDLE" );
329    
330    #my $subLayer = $self->_getSubLayerHandle();    #my $subLayer = $self->_getSubLayerHandle();
331      #print Dumper($self);
332      #exit;
333    
334    # apply configured modifications    # apply configured modifications
335      if (exists $self->{dbi}->{trace_level} && exists $self->{dbi}->{trace_file}) {      if (exists $self->{dbi}->{trace_level} && exists $self->{dbi}->{trace_file}) {
# Line 334  sub retreatSchema { Line 395  sub retreatSchema {
395    return $ok;    return $ok;
396  }  }
397    
398  sub rebuildDbAndSchema {  sub rebuildDb {
399    my $self = shift;    my $self = shift;
400    $logger->info( __PACKAGE__ . "->rebuildDbAndSchema()" );    $logger->info( __PACKAGE__ . "->rebuildDb()" );
401    my @results;    my @results;
402    
403    # sum up results (bool (0/1)) in array    # sum up results (bool (0/1)) in array
# Line 376  sub getListFiltered { Line 437  sub getListFiltered {
437    my @results;    my @results;
438    $logger->debug( __PACKAGE__ . "->getListFiltered( nodename => '" . $nodename . "' )" );    $logger->debug( __PACKAGE__ . "->getListFiltered( nodename => '" . $nodename . "' )" );
439    
440    #print Dumper($filters);  #print Dumper($filters);
441        
442    my @tfilters;    my @tfilters;
443        
# Line 415  sub getListFiltered { Line 476  sub getListFiltered {
476    # HACK: build eval-string (sorry) to get filtered list - please give advice here    # HACK: build eval-string (sorry) to get filtered list - please give advice here
477    my $evalstring = 'return $self->{_COREHANDLE}->select($remote, ' . $tfilter . ');';    my $evalstring = 'return $self->{_COREHANDLE}->select($remote, ' . $tfilter . ');';
478        
479      #print "eval: $evalstring", "\n";
480      
481    # get filtered list/set    # get filtered list/set
482    @results = eval($evalstring);    @results = eval($evalstring);
483    die $@ if $@;    die $@ if $@;
# Line 474  sub sendQuery { Line 537  sub sendQuery {
537      #return $self->createSet( $self->{COREHANDLE}->load('300090018') );      #return $self->createSet( $self->{COREHANDLE}->load('300090018') );
538    }    }
539    
540    die("This should not be reached for now - redirect to \$self->getListFiltered() here!");    my $list = $self->getListFiltered($query->{node}, $query->{criterias});
541      #return $self->createSet($object);
542      #return $self->createSet($list);
543      return $self->createSet(@$list);
544    
545    # TODO: do a common tangram query here    #die("This should not be reached for now - redirect to \$self->getListFiltered() here!");
546    
547    
548    
549    
550      # try a generic tangram query here
551      # TODO: try to place an oql on top of that (search.cpan.org!)
552    my @crits;    my @crits;
553    foreach (@{$query->{criterias}}) {    foreach (@{$query->{criterias}}) {
554      my $op = '';      my $op = '';
# Line 528  sub getObject { Line 599  sub getObject {
599    return $object if $object;    return $object if $object;
600  }  }
601    
602    sub getObjectByGuid {
603      my $self = shift;
604      my $guid = shift;
605      my $options = shift;
606      
607      # Guid and Classname is needed
608      if(!$guid || !$options->{classname}) {
609       $logger->error( __PACKAGE__ . "->getObjectByGuid: No 'guid' OR no Classname in options hash was given but needed!" );
610        return;
611      }
612      
613      # TODO: create a deep_unload method (currently _all_ objects are unloaded)
614      # unload($oid) will only unload object, not deep object hashes
615      $self->{_COREHANDLE}->unload() if ($options->{destroy});
616    
617      # search for object with given Classname and Guid
618      my $obj_tmp = $self->{_COREHANDLE}->remote($options->{classname});
619      my @result = $self->{_COREHANDLE}->select($obj_tmp, $obj_tmp->{guid} eq $guid);
620      
621      # we searched for global unique identifer of some object,
622      # so I think we can trust there would be only one result
623      if($result[0]) {
624        return $result[0];
625      } else {
626        $logger->error( __PACKAGE__ . "->getObjectByGuid: No Object with Classname $options->{classname} and GUID $guid found!" );
627        return;
628      }
629      
630    }
631    
632  sub getObjectAsHash {  sub getObjectAsHash {
633    my $self = shift;    my $self = shift;
634    my $oid = shift;    my $oid = shift;
635    my $options = shift;    my $options = shift;  
636    my $obj = $self->getObject($oid, $options);    my $obj;
637      
638      if($options->{guid}) {
639        $obj = $self->getObjectByGuid($oid, $options);
640      } else {
641        $obj = $self->getObject($oid, $options);
642      }
643        
644    # build options (a callback to unload autovivified objects) for 'expand'    # build options (a callback to unload autovivified objects) for 'expand'
645    # TODO: use $logger to write to debug here!    # TODO: use $logger to write to debug here!
646    my $cb; # = sub {};    my $cb; # = sub {};
647    
648      # deactivated way to get rid of used instances, if requested
649  =pod  =pod
650    if ($options->{destroy}) {      if ($options->{destroy}) {
651      $options->{cb}->{destroy} = sub {        $options->{cb}->{destroy} = sub {
652        print "================ DESTROY", "\n";          print "================ DESTROY", "\n";
653        my $object = shift;          my $object = shift;
654        #print Dumper($object);          #print Dumper($object);
655        $self->{_COREHANDLE}->unload($object);          $self->{_COREHANDLE}->unload($object);
656        #undef($object);          #undef($object);
657      };        };
658    }      }
659  =cut  =cut
660    
661    my $hash = object2hash($obj, $options);    my $hash = expand($obj, $options);
662    #$options->{cb}->{destroy}->($obj);  
663    #$self->{_COREHANDLE}->unload($obj);    # old (unsuccessful) attempts to get rid of used instances, if requested
664      
665    # convert values in hash to utf8 to be ready for (e.g.) encapsulation in XML      # V1:
666    # now done in object2hash      #$options->{cb}->{destroy}->($obj);
667    #var2utf8($hash) if ($options->{utf8});      #$self->{_COREHANDLE}->unload($obj);
668        
669    # old (wrong) attempts to get rid of used instances, if requested      # V2:
670      #$obj->clear_refs;      #$obj->clear_refs;
671      #$self->{COREHANDLE}->unload($obj) if($options->{destroy});      #$self->{COREHANDLE}->unload($obj) if($options->{destroy});
672      #$obj->DESTROY;      #$obj->DESTROY;
# Line 575  sub getCOREHANDLE { Line 684  sub getCOREHANDLE {
684    return $self->{_COREHANDLE};    return $self->{_COREHANDLE};
685  }  }
686    
687    sub dropDb {
688      my $self = shift;
689      my $storage = $self->_getSubLayerHandle();
690      return $storage->dropDb();
691    }
692    
693    sub testAvailability {
694      my $self = shift;
695      my $storage = $self->_getSubLayerHandle();
696      return $storage->testAvailability();
697    }
698    
699    sub disconnect2 {
700      my $self = shift;
701      my $storage = $self->_getSubLayerHandle();
702      print "DISC!", "\n";
703    
704      my $storage_ll = $storage->{_COREHANDLE};
705      $storage_ll->disconnect();
706      
707      print Dumper($storage);
708      exit;
709      
710      #$self->{_COREHANDLE}
711      #$storage->disconnect();
712      $self->{dataStorageLayer}->disconnect();
713    }
714    
715  1;  1;
716    __END__
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