/[cvs]/nfo/perl/libs/Data/Storage/Handler/Tangram.pm
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revision 1.15 by joko, Thu Dec 5 13:55:21 2002 UTC revision 1.24 by joko, Sun Dec 22 14:13:01 2002 UTC
# Line 3  Line 3 
3  #  $Id$  #  $Id$
4  #  #
5  #  $Log$  #  $Log$
6    #  Revision 1.24  2002/12/22 14:13:01  joko
7    #  + sub dropDb
8    #
9    #  Revision 1.23  2002/12/19 16:31:53  joko
10    #  +- renamed sub to 'rebuildDb'
11    #
12    #  Revision 1.22  2002/12/18 22:28:16  jonen
13    #  + added extended logging at 'getObjectByGuid()'
14    #
15    #  Revision 1.21  2002/12/16 22:20:49  jonen
16    #  + fixed bug at 'getObjectByGuid()'
17    #
18    #  Revision 1.20  2002/12/16 20:49:17  jonen
19    #  + added sub 'getObjectByGuid()'
20    #  + added functionality to use 'getObjectByGuid' at 'getObjectAsHash()'
21    #
22    #  Revision 1.19  2002/12/16 06:46:09  joko
23    #  + attempt to introduce a generic '_patchSchema' - cancelled!
24    #
25    #  Revision 1.18  2002/12/13 21:48:07  joko
26    #  + fix to 'sub sendQuery'
27    #
28    #  Revision 1.17  2002/12/12 02:51:09  joko
29    #  + cosmetics
30    #
31    #  Revision 1.16  2002/12/11 06:54:10  joko
32    #  + fix: encapsulated object-loading inside an 'eval'
33    #
34  #  Revision 1.15  2002/12/05 13:55:21  joko  #  Revision 1.15  2002/12/05 13:55:21  joko
35  #  + now utilizing 'object2hash' instead of 'var_deref'  #  + now utilizing 'object2hash' instead of 'var_deref'
36  #  + played around with having fresh-objects - no progress....  #  + played around with having fresh-objects - no progress....
# Line 112  sub _initSchema { Line 140  sub _initSchema {
140      $logger->error( __PACKAGE__ . "->_initSchema: No Schema available for $self->{schema}" );      $logger->error( __PACKAGE__ . "->_initSchema: No Schema available for $self->{schema}" );
141      return 0;      return 0;
142    }    }
143      #$self->_patchSchema();
144    return 1;    return 1;
145  }  }
146    
147    sub _patchSchema {
148      my $self = shift;
149      foreach (keys %{$schema_tangram->{classes}}) {
150        next if $schema_tangram->{classes}->{$_}->{abstract};
151        #next if ($_ ne 'TsBankAccount');
152        #$_ ne 'AbstractAccount' &&
153        print "class: $_", "\n";
154    #print Dumper($schema_tangram->{classes}->{$_});
155        # create new string property named 'guid'
156        my $tstring = Tangram::String->new();
157        $tstring->{name} = $tstring->{col} = 'guid';
158        # inject property into schema
159        #$schema_tangram->{classes}->{$_}->{root}->{SPECS}->[0]->{fields}->{string}->{$tstring->{name}} = $tstring;
160        print Dumper($schema_tangram->{classes}->{$_}->{root}->{SPECS}->[0]->{fields});
161      }
162    }
163    
164  sub connect {  sub connect {
165    
166      my $self = shift;      my $self = shift;
# Line 325  sub retreatSchema { Line 371  sub retreatSchema {
371    return $ok;    return $ok;
372  }  }
373    
374  sub rebuildDbAndSchema {  sub rebuildDb {
375    my $self = shift;    my $self = shift;
376    $logger->info( __PACKAGE__ . "->rebuildDbAndSchema()" );    $logger->info( __PACKAGE__ . "->rebuildDb()" );
377    my @results;    my @results;
378    
379    # sum up results (bool (0/1)) in array    # sum up results (bool (0/1)) in array
# Line 423  sub createCursor { Line 469  sub createCursor {
469    
470  sub createSet {  sub createSet {
471    my $self = shift;    my $self = shift;
472    #print "-" x 80, "\n";
473    #print Dumper(@_);
474    my @objects = @_;    my @objects = @_;
475    my $rh = Set::Object->new();    my $rh = Set::Object->new();
476    foreach (@objects) {    foreach (@objects) {
477      #print Dumper($_);      if (!isEmpty($_)) {
478      $rh->insert($_) if !isEmpty($_);  #print Dumper($_);
479          $rh->insert($_);
480        }
481    }    }
482    #print Dumper($rh->members());    #print Dumper($rh->members());
483    my $result = Data::Storage::Result::Tangram->new( RESULTHANDLE => $rh );    my $result = Data::Storage::Result::Tangram->new( RESULTHANDLE => $rh );
# Line 451  sub sendQuery { Line 501  sub sendQuery {
501      my $ident = $query->{criterias}->[0]->{val};      my $ident = $query->{criterias}->[0]->{val};
502  #print "load obj", "\n";  #print "load obj", "\n";
503      #return $self->createSet() if $ident == 5;      #return $self->createSet() if $ident == 5;
504        $self->{_COREHANDLE}->unload($ident);
505      my $object = $self->{_COREHANDLE}->load($ident);      my $object = $self->{_COREHANDLE}->load($ident);
506  #print "get id", "\n";  #print "get id", "\n";
507      my $oid = $self->{_COREHANDLE}->id($object);      my $oid = $self->{_COREHANDLE}->id($object);
508    #print Dumper($object);
509    #print "oid: $oid", "\n";
510      return $self->createSet($object);      return $self->createSet($object);
511      #return $self->createSet( $self->{COREHANDLE}->load('300090018') );      #return $self->createSet( $self->{COREHANDLE}->load('300090018') );
512    }    }
# Line 497  sub getObject { Line 550  sub getObject {
550    my $self = shift;    my $self = shift;
551    my $oid = shift;    my $oid = shift;
552    my $options = shift;    my $options = shift;
553    # TODO: create a deep_unload method  
554      # TODO: create a deep_unload method (currently _all_ objects are unloaded)
555    # unload($oid) will only unload object, not deep object hashes    # unload($oid) will only unload object, not deep object hashes
556    $self->{_COREHANDLE}->unload() if($options->{destroy});    $self->{_COREHANDLE}->unload() if ($options->{destroy});
557    
558    # TODO: review this    # TODO: review this
559    #if (!$self->{COREHANDLE}) { return; }    #if (!$self->{COREHANDLE}) { return; }
560    return $self->{_COREHANDLE}->load($oid);  
561      # TODO: review this
562      my $object = eval('$self->{_COREHANDLE}->load($oid);');
563      print $@, "\n" if $@;
564    
565      return $object if $object;
566    }
567    
568    sub getObjectByGuid {
569      my $self = shift;
570      my $guid = shift;
571      my $options = shift;
572      
573      # Guid and Classname is needed
574      if(!$guid || !$options->{classname}) {
575       $logger->error( __PACKAGE__ . "->getObjectByGuid: No 'guid' OR no Classname in options hash was given but needed!" );
576        return;
577      }
578      
579      # TODO: create a deep_unload method (currently _all_ objects are unloaded)
580      # unload($oid) will only unload object, not deep object hashes
581      $self->{_COREHANDLE}->unload() if ($options->{destroy});
582    
583      # search for object with given Classname and Guid
584      my $obj_tmp = $self->{_COREHANDLE}->remote($options->{classname});
585      my @result = $self->{_COREHANDLE}->select($obj_tmp, $obj_tmp->{guid} eq $guid);
586      
587      # we searched for global unique identifer of some object,
588      # so I think we can trust there would be only one result
589      if($result[0]) {
590        return $result[0];
591      } else {
592        $logger->error( __PACKAGE__ . "->getObjectByGuid: No Object with Classname $options->{classname} and GUID $guid found!" );
593        return;
594      }
595      
596  }  }
597    
598  sub getObjectAsHash {  sub getObjectAsHash {
599    my $self = shift;    my $self = shift;
600    my $oid = shift;    my $oid = shift;
601    my $options = shift;    my $options = shift;  
602    my $obj = $self->getObject($oid, $options);    my $obj;
603      
604      if($options->{guid}) {
605        $obj = $self->getObjectByGuid($oid, $options);
606      } else {
607        $obj = $self->getObject($oid, $options);
608      }
609        
610    # build options (a callback to unload autovivified objects) for 'expand'    # build options (a callback to unload autovivified objects) for 'expand'
611    # TODO: use $logger to write to debug here!    # TODO: use $logger to write to debug here!
# Line 552  sub getCOREHANDLE { Line 648  sub getCOREHANDLE {
648    return $self->{_COREHANDLE};    return $self->{_COREHANDLE};
649  }  }
650    
651    sub dropDb {
652      my $self = shift;
653      my $storage = $self->_getSubLayerHandle();
654      return $storage->dropDb();
655    }
656    
657  1;  1;
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