/[cvs]/nfo/perl/libs/Data/Storage/Handler/Tangram.pm
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revision 1.26 by joko, Thu Jan 30 22:29:47 2003 UTC revision 1.30 by joko, Thu Mar 27 15:31:14 2003 UTC
# Line 3  Line 3 
3  #  $Id$  #  $Id$
4  #  #
5  #  $Log$  #  $Log$
6    #  Revision 1.30  2003/03/27 15:31:14  joko
7    #  fixes to modules regarding new namespace(s) below Data::Mungle::*
8    #
9    #  Revision 1.29  2003/02/21 01:47:18  joko
10    #  purged old code
11    #  minor cosmetics
12    #
13    #  Revision 1.28  2003/02/20 20:20:26  joko
14    #  tried to get auto-disconnect working again - failed with that
15    #
16    #  Revision 1.27  2003/01/31 06:30:59  joko
17    #  + enabled 'sendQuery'
18    #
19  #  Revision 1.26  2003/01/30 22:29:47  joko  #  Revision 1.26  2003/01/30 22:29:47  joko
20  #  + fixed module usage (removed dependency on 'libp.pm')  #  + fixed module usage (removed dependency on 'libp.pm')
21  #  #
# Line 38  Line 51 
51  #  + fix: encapsulated object-loading inside an 'eval'  #  + fix: encapsulated object-loading inside an 'eval'
52  #  #
53  #  Revision 1.15  2002/12/05 13:55:21  joko  #  Revision 1.15  2002/12/05 13:55:21  joko
54  #  + now utilizing 'object2hash' instead of 'var_deref'  #  + now utilizing 'expand' instead of 'var_deref'
55  #  + played around with having fresh-objects - no progress....  #  + played around with having fresh-objects - no progress....
56  #  #
57  #  Revision 1.14  2002/12/05 09:40:30  jonen  #  Revision 1.14  2002/12/05 09:40:30  jonen
# Line 111  use warnings; Line 124  use warnings;
124  use base ("Data::Storage::Handler");  use base ("Data::Storage::Handler");
125  use base ("Data::Storage::Handler::Abstract");  use base ("Data::Storage::Handler::Abstract");
126    
127  use Tangram;  
128  use Data::Dumper;  use Data::Dumper;
129    use Tangram;
130    
131  use DesignPattern::Object;  use DesignPattern::Object;
132  use Data::Storage::Result::Tangram;  use Data::Storage::Result::Tangram;
133  use Data::Compare::Struct qw( isEmpty );  use Data::Mungle::Compare::Struct qw( isEmpty );
134  use Data::Transform::Deep qw( object2hash );  use Data::Mungle::Transform::Deep qw( expand );
 use Data::Transform::Encode qw( var2utf8 );  
135    
136  # get logger instance  # get logger instance
137  my $logger = Log::Dispatch::Config->instance;  my $logger = Log::Dispatch::Config->instance;
# Line 426  sub getListFiltered { Line 440  sub getListFiltered {
440    my @results;    my @results;
441    $logger->debug( __PACKAGE__ . "->getListFiltered( nodename => '" . $nodename . "' )" );    $logger->debug( __PACKAGE__ . "->getListFiltered( nodename => '" . $nodename . "' )" );
442    
443    #print Dumper($filters);  #print Dumper($filters);
444        
445    my @tfilters;    my @tfilters;
446        
# Line 465  sub getListFiltered { Line 479  sub getListFiltered {
479    # 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
480    my $evalstring = 'return $self->{_COREHANDLE}->select($remote, ' . $tfilter . ');';    my $evalstring = 'return $self->{_COREHANDLE}->select($remote, ' . $tfilter . ');';
481        
482      #print "eval: $evalstring", "\n";
483      
484    # get filtered list/set    # get filtered list/set
485    @results = eval($evalstring);    @results = eval($evalstring);
486    die $@ if $@;    die $@ if $@;
# Line 524  sub sendQuery { Line 540  sub sendQuery {
540      #return $self->createSet( $self->{COREHANDLE}->load('300090018') );      #return $self->createSet( $self->{COREHANDLE}->load('300090018') );
541    }    }
542    
543    die("This should not be reached for now - redirect to \$self->getListFiltered() here!");    my $list = $self->getListFiltered($query->{node}, $query->{criterias});
544      #return $self->createSet($object);
545      #return $self->createSet($list);
546      return $self->createSet(@$list);
547    
548      #die("This should not be reached for now - redirect to \$self->getListFiltered() here!");
549    
   # TODO: do a common tangram query here  
550    
551    
552    
553      # try a generic tangram query here
554      # TODO: try to place an oql on top of that (search.cpan.org!)
555    my @crits;    my @crits;
556    foreach (@{$query->{criterias}}) {    foreach (@{$query->{criterias}}) {
557      my $op = '';      my $op = '';
# Line 623  sub getObjectAsHash { Line 647  sub getObjectAsHash {
647    # build options (a callback to unload autovivified objects) for 'expand'    # build options (a callback to unload autovivified objects) for 'expand'
648    # TODO: use $logger to write to debug here!    # TODO: use $logger to write to debug here!
649    my $cb; # = sub {};    my $cb; # = sub {};
650    
651      # deactivated way to get rid of used instances, if requested
652  =pod  =pod
653    if ($options->{destroy}) {      if ($options->{destroy}) {
654      $options->{cb}->{destroy} = sub {        $options->{cb}->{destroy} = sub {
655        print "================ DESTROY", "\n";          print "================ DESTROY", "\n";
656        my $object = shift;          my $object = shift;
657        #print Dumper($object);          #print Dumper($object);
658        $self->{_COREHANDLE}->unload($object);          $self->{_COREHANDLE}->unload($object);
659        #undef($object);          #undef($object);
660      };        };
661    }      }
662  =cut  =cut
663    
664    my $hash = object2hash($obj, $options);    my $hash = expand($obj, $options);
665    #$options->{cb}->{destroy}->($obj);  
666    #$self->{_COREHANDLE}->unload($obj);    # old (unsuccessful) attempts to get rid of used instances, if requested
667      
668    # convert values in hash to utf8 to be ready for (e.g.) encapsulation in XML      # V1:
669    # now done in object2hash      #$options->{cb}->{destroy}->($obj);
670    #var2utf8($hash) if ($options->{utf8});      #$self->{_COREHANDLE}->unload($obj);
671        
672    # old (wrong) attempts to get rid of used instances, if requested      # V2:
673      #$obj->clear_refs;      #$obj->clear_refs;
674      #$self->{COREHANDLE}->unload($obj) if($options->{destroy});      #$self->{COREHANDLE}->unload($obj) if($options->{destroy});
675      #$obj->DESTROY;      #$obj->DESTROY;
# Line 673  sub testAvailability { Line 699  sub testAvailability {
699    return $storage->testAvailability();    return $storage->testAvailability();
700  }  }
701    
702    sub disconnect2 {
703      my $self = shift;
704      my $storage = $self->_getSubLayerHandle();
705      print "DISC!", "\n";
706    
707      my $storage_ll = $storage->{_COREHANDLE};
708      $storage_ll->disconnect();
709      
710      print Dumper($storage);
711      exit;
712      
713      #$self->{_COREHANDLE}
714      #$storage->disconnect();
715      $self->{dataStorageLayer}->disconnect();
716    }
717    
718  1;  1;
719  __END__  __END__
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