/[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 1.28 by joko, Thu Feb 20 20:20:26 2003 UTC
# Line 3  Line 3 
3  #  $Id$  #  $Id$
4  #  #
5  #  $Log$  #  $Log$
6    #  Revision 1.28  2003/02/20 20:20:26  joko
7    #  tried to get auto-disconnect working again - failed with that
8    #
9    #  Revision 1.27  2003/01/31 06:30:59  joko
10    #  + enabled 'sendQuery'
11    #
12    #  Revision 1.26  2003/01/30 22:29:47  joko
13    #  + fixed module usage (removed dependency on 'libp.pm')
14    #
15    #  Revision 1.25  2003/01/19 02:30:05  joko
16    #  + fix: modified call to '_initSchema'
17    #
18    #  Revision 1.24  2002/12/22 14:13:01  joko
19    #  + sub dropDb
20    #
21    #  Revision 1.23  2002/12/19 16:31:53  joko
22    #  +- renamed sub to 'rebuildDb'
23    #
24    #  Revision 1.22  2002/12/18 22:28:16  jonen
25    #  + added extended logging at 'getObjectByGuid()'
26    #
27    #  Revision 1.21  2002/12/16 22:20:49  jonen
28    #  + fixed bug at 'getObjectByGuid()'
29    #
30    #  Revision 1.20  2002/12/16 20:49:17  jonen
31    #  + added sub 'getObjectByGuid()'
32    #  + added functionality to use 'getObjectByGuid' at 'getObjectAsHash()'
33    #
34    #  Revision 1.19  2002/12/16 06:46:09  joko
35    #  + attempt to introduce a generic '_patchSchema' - cancelled!
36    #
37    #  Revision 1.18  2002/12/13 21:48:07  joko
38    #  + fix to 'sub sendQuery'
39    #
40    #  Revision 1.17  2002/12/12 02:51:09  joko
41    #  + cosmetics
42    #
43    #  Revision 1.16  2002/12/11 06:54:10  joko
44    #  + fix: encapsulated object-loading inside an 'eval'
45    #
46  #  Revision 1.15  2002/12/05 13:55:21  joko  #  Revision 1.15  2002/12/05 13:55:21  joko
47  #  + now utilizing 'object2hash' instead of 'var_deref'  #  + now utilizing 'expand' instead of 'var_deref'
48  #  + played around with having fresh-objects - no progress....  #  + played around with having fresh-objects - no progress....
49  #  #
50  #  Revision 1.14  2002/12/05 09:40:30  jonen  #  Revision 1.14  2002/12/05 09:40:30  jonen
# Line 77  use warnings; Line 117  use warnings;
117  use base ("Data::Storage::Handler");  use base ("Data::Storage::Handler");
118  use base ("Data::Storage::Handler::Abstract");  use base ("Data::Storage::Handler::Abstract");
119    
120  use Tangram;  
121  use Data::Dumper;  use Data::Dumper;
122  use libp qw( getNewPerlObjectByPkgName );  use Tangram;
123    
124    use DesignPattern::Object;
125  use Data::Storage::Result::Tangram;  use Data::Storage::Result::Tangram;
126  use Data::Compare::Struct qw( isEmpty );  use Data::Compare::Struct qw( isEmpty );
127  use Data::Transform::Deep qw( object2hash );  use Data::Transform::Deep qw( expand );
128  use Data::Transform::Encode qw( var2utf8 );  #use Data::Transform::Encode qw( var2utf8 );
   
129    
130  # get logger instance  # get logger instance
131  my $logger = Log::Dispatch::Config->instance;  my $logger = Log::Dispatch::Config->instance;
# Line 105  sub _initSchema { Line 146  sub _initSchema {
146    my $self = shift;    my $self = shift;
147    $logger->debug( __PACKAGE__ . "->_initSchema()" );    $logger->debug( __PACKAGE__ . "->_initSchema()" );
148    #if (!$schema_tangram) {    #if (!$schema_tangram) {
149      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} } );
150        my $obj = DesignPattern::Object->fromPackage($self->{locator}->{schema}, { 'EXPORT_OBJECTS' => $self->{locator}->{classnames}, 'want_transactions' => $self->{locator}->{want_transactions} } );
151      $schema_tangram = $obj->getSchema();      $schema_tangram = $obj->getSchema();
152    #}    #}
153    if (!$schema_tangram) {    if (!$schema_tangram) {
154      $logger->error( __PACKAGE__ . "->_initSchema: No Schema available for $self->{schema}" );      $logger->error( __PACKAGE__ . "->_initSchema: No Schema available for $self->{schema}" );
155      return 0;      return 0;
156    }    }
157      #$self->_patchSchema();
158    return 1;    return 1;
159  }  }
160    
161    sub _patchSchema {
162      my $self = shift;
163      foreach (keys %{$schema_tangram->{classes}}) {
164        next if $schema_tangram->{classes}->{$_}->{abstract};
165        #next if ($_ ne 'TsBankAccount');
166        #$_ ne 'AbstractAccount' &&
167        print "class: $_", "\n";
168    #print Dumper($schema_tangram->{classes}->{$_});
169        # create new string property named 'guid'
170        my $tstring = Tangram::String->new();
171        $tstring->{name} = $tstring->{col} = 'guid';
172        # inject property into schema
173        #$schema_tangram->{classes}->{$_}->{root}->{SPECS}->[0]->{fields}->{string}->{$tstring->{name}} = $tstring;
174        print Dumper($schema_tangram->{classes}->{$_}->{root}->{SPECS}->[0]->{fields});
175      }
176    }
177    
178  sub connect {  sub connect {
179    
180      my $self = shift;      my $self = shift;
181            
182      my $dsn = shift;      my $dsn = shift;
183    
184    #print Dumper($self);
185    #exit;
186    
187        # TODO: re-enable
188      $dsn ||= $self->{locator}->{dbi}->{dsn};      $dsn ||= $self->{locator}->{dbi}->{dsn};
       
189      $logger->debug( __PACKAGE__ . "->connect( dsn $dsn )" );      $logger->debug( __PACKAGE__ . "->connect( dsn $dsn )" );
190            
191      #my $storage = Tangram::Relational->connect( $schema, $dsn );      #my $storage = Tangram::Relational->connect( $schema, $dsn );
# Line 133  sub connect { Line 197  sub connect {
197  #      return;  #      return;
198  #    }  #    }
199    
200      return unless $self->_initSchema();      #return unless $self->_initSchema();
201        $self->_initSchema();
202    
203      # create the main tangram storage object      # create the main tangram storage object
204      #$self->{COREHANDLE} = Tangram::Relational->connect( $schema, $dsn );      #$self->{COREHANDLE} = Tangram::Relational->connect( $schema, $dsn );
# Line 260  sub configureCOREHANDLE { Line 325  sub configureCOREHANDLE {
325    $logger->debug( __PACKAGE__ . "->configureCOREHANDLE" );    $logger->debug( __PACKAGE__ . "->configureCOREHANDLE" );
326    
327    #my $subLayer = $self->_getSubLayerHandle();    #my $subLayer = $self->_getSubLayerHandle();
328      #print Dumper($self);
329      #exit;
330    
331    # apply configured modifications    # apply configured modifications
332      if (exists $self->{dbi}->{trace_level} && exists $self->{dbi}->{trace_file}) {      if (exists $self->{dbi}->{trace_level} && exists $self->{dbi}->{trace_file}) {
# Line 325  sub retreatSchema { Line 392  sub retreatSchema {
392    return $ok;    return $ok;
393  }  }
394    
395  sub rebuildDbAndSchema {  sub rebuildDb {
396    my $self = shift;    my $self = shift;
397    $logger->info( __PACKAGE__ . "->rebuildDbAndSchema()" );    $logger->info( __PACKAGE__ . "->rebuildDb()" );
398    my @results;    my @results;
399    
400    # sum up results (bool (0/1)) in array    # sum up results (bool (0/1)) in array
# Line 367  sub getListFiltered { Line 434  sub getListFiltered {
434    my @results;    my @results;
435    $logger->debug( __PACKAGE__ . "->getListFiltered( nodename => '" . $nodename . "' )" );    $logger->debug( __PACKAGE__ . "->getListFiltered( nodename => '" . $nodename . "' )" );
436    
437    #print Dumper($filters);  #print Dumper($filters);
438        
439    my @tfilters;    my @tfilters;
440        
# Line 406  sub getListFiltered { Line 473  sub getListFiltered {
473    # 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
474    my $evalstring = 'return $self->{_COREHANDLE}->select($remote, ' . $tfilter . ');';    my $evalstring = 'return $self->{_COREHANDLE}->select($remote, ' . $tfilter . ');';
475        
476      #print "eval: $evalstring", "\n";
477      
478    # get filtered list/set    # get filtered list/set
479    @results = eval($evalstring);    @results = eval($evalstring);
480    die $@ if $@;    die $@ if $@;
# Line 423  sub createCursor { Line 492  sub createCursor {
492    
493  sub createSet {  sub createSet {
494    my $self = shift;    my $self = shift;
495    #print "-" x 80, "\n";
496    #print Dumper(@_);
497    my @objects = @_;    my @objects = @_;
498    my $rh = Set::Object->new();    my $rh = Set::Object->new();
499    foreach (@objects) {    foreach (@objects) {
500      #print Dumper($_);      if (!isEmpty($_)) {
501      $rh->insert($_) if !isEmpty($_);  #print Dumper($_);
502          $rh->insert($_);
503        }
504    }    }
505    #print Dumper($rh->members());    #print Dumper($rh->members());
506    my $result = Data::Storage::Result::Tangram->new( RESULTHANDLE => $rh );    my $result = Data::Storage::Result::Tangram->new( RESULTHANDLE => $rh );
# Line 451  sub sendQuery { Line 524  sub sendQuery {
524      my $ident = $query->{criterias}->[0]->{val};      my $ident = $query->{criterias}->[0]->{val};
525  #print "load obj", "\n";  #print "load obj", "\n";
526      #return $self->createSet() if $ident == 5;      #return $self->createSet() if $ident == 5;
527        $self->{_COREHANDLE}->unload($ident);
528      my $object = $self->{_COREHANDLE}->load($ident);      my $object = $self->{_COREHANDLE}->load($ident);
529  #print "get id", "\n";  #print "get id", "\n";
530      my $oid = $self->{_COREHANDLE}->id($object);      my $oid = $self->{_COREHANDLE}->id($object);
531    #print Dumper($object);
532    #print "oid: $oid", "\n";
533      return $self->createSet($object);      return $self->createSet($object);
534      #return $self->createSet( $self->{COREHANDLE}->load('300090018') );      #return $self->createSet( $self->{COREHANDLE}->load('300090018') );
535    }    }
536    
537    die("This should not be reached for now - redirect to \$self->getListFiltered() here!");    my $list = $self->getListFiltered($query->{node}, $query->{criterias});
538      #return $self->createSet($object);
539      #return $self->createSet($list);
540      return $self->createSet(@$list);
541    
542      #die("This should not be reached for now - redirect to \$self->getListFiltered() here!");
543    
   # TODO: do a common tangram query here  
544    
545    
546    
547      # try a generic tangram query here
548      # TODO: try to place an oql on top of that (search.cpan.org!)
549    my @crits;    my @crits;
550    foreach (@{$query->{criterias}}) {    foreach (@{$query->{criterias}}) {
551      my $op = '';      my $op = '';
# Line 497  sub getObject { Line 581  sub getObject {
581    my $self = shift;    my $self = shift;
582    my $oid = shift;    my $oid = shift;
583    my $options = shift;    my $options = shift;
584    # TODO: create a deep_unload method  
585      # TODO: create a deep_unload method (currently _all_ objects are unloaded)
586    # unload($oid) will only unload object, not deep object hashes    # unload($oid) will only unload object, not deep object hashes
587    $self->{_COREHANDLE}->unload() if($options->{destroy});    $self->{_COREHANDLE}->unload() if ($options->{destroy});
588    
589    # TODO: review this    # TODO: review this
590    #if (!$self->{COREHANDLE}) { return; }    #if (!$self->{COREHANDLE}) { return; }
591    return $self->{_COREHANDLE}->load($oid);  
592      # TODO: review this
593      my $object = eval('$self->{_COREHANDLE}->load($oid);');
594      print $@, "\n" if $@;
595    
596      return $object if $object;
597    }
598    
599    sub getObjectByGuid {
600      my $self = shift;
601      my $guid = shift;
602      my $options = shift;
603      
604      # Guid and Classname is needed
605      if(!$guid || !$options->{classname}) {
606       $logger->error( __PACKAGE__ . "->getObjectByGuid: No 'guid' OR no Classname in options hash was given but needed!" );
607        return;
608      }
609      
610      # TODO: create a deep_unload method (currently _all_ objects are unloaded)
611      # unload($oid) will only unload object, not deep object hashes
612      $self->{_COREHANDLE}->unload() if ($options->{destroy});
613    
614      # search for object with given Classname and Guid
615      my $obj_tmp = $self->{_COREHANDLE}->remote($options->{classname});
616      my @result = $self->{_COREHANDLE}->select($obj_tmp, $obj_tmp->{guid} eq $guid);
617      
618      # we searched for global unique identifer of some object,
619      # so I think we can trust there would be only one result
620      if($result[0]) {
621        return $result[0];
622      } else {
623        $logger->error( __PACKAGE__ . "->getObjectByGuid: No Object with Classname $options->{classname} and GUID $guid found!" );
624        return;
625      }
626      
627  }  }
628    
629  sub getObjectAsHash {  sub getObjectAsHash {
630    my $self = shift;    my $self = shift;
631    my $oid = shift;    my $oid = shift;
632    my $options = shift;    my $options = shift;  
633    my $obj = $self->getObject($oid, $options);    my $obj;
634      
635      if($options->{guid}) {
636        $obj = $self->getObjectByGuid($oid, $options);
637      } else {
638        $obj = $self->getObject($oid, $options);
639      }
640        
641    # build options (a callback to unload autovivified objects) for 'expand'    # build options (a callback to unload autovivified objects) for 'expand'
642    # TODO: use $logger to write to debug here!    # TODO: use $logger to write to debug here!
# Line 526  sub getObjectAsHash { Line 653  sub getObjectAsHash {
653    }    }
654  =cut  =cut
655    
656    my $hash = object2hash($obj, $options);    my $hash = expand($obj, $options);
657    #$options->{cb}->{destroy}->($obj);    #$options->{cb}->{destroy}->($obj);
658    #$self->{_COREHANDLE}->unload($obj);    #$self->{_COREHANDLE}->unload($obj);
659        
660    # convert values in hash to utf8 to be ready for (e.g.) encapsulation in XML    # convert values in hash to utf8 to be ready for (e.g.) encapsulation in XML
661    # now done in object2hash    # now done in expand
662    #var2utf8($hash) if ($options->{utf8});    #var2utf8($hash) if ($options->{utf8});
663        
664    # old (wrong) attempts to get rid of used instances, if requested    # old (wrong) attempts to get rid of used instances, if requested
# Line 552  sub getCOREHANDLE { Line 679  sub getCOREHANDLE {
679    return $self->{_COREHANDLE};    return $self->{_COREHANDLE};
680  }  }
681    
682    sub dropDb {
683      my $self = shift;
684      my $storage = $self->_getSubLayerHandle();
685      return $storage->dropDb();
686    }
687    
688    sub testAvailability {
689      my $self = shift;
690      my $storage = $self->_getSubLayerHandle();
691      return $storage->testAvailability();
692    }
693    
694    sub disconnect2 {
695      my $self = shift;
696      my $storage = $self->_getSubLayerHandle();
697      print "DISC!", "\n";
698    
699      my $storage_ll = $storage->{_COREHANDLE};
700      $storage_ll->disconnect();
701      
702      print Dumper($storage);
703      exit;
704      
705      #$self->{_COREHANDLE}
706      #$storage->disconnect();
707      $self->{dataStorageLayer}->disconnect();
708    }
709    
710  1;  1;
711    __END__
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