/[cvs]/nfo/perl/libs/Data/Storage/Handler/Tangram.pm
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revision 1.38 by joko, Tue May 13 16:38:38 2003 UTC revision 1.49 by jonen, Wed Nov 3 14:12:34 2004 UTC
# Line 3  Line 3 
3  #  $Id$  #  $Id$
4  #  #
5  #  $Log$  #  $Log$
6    #  Revision 1.49  2004/11/03 14:12:34  jonen
7    #  replaced print with logger->info
8    #
9    #  Revision 1.48  2004/10/28 11:35:51  jonen
10    #  + bugfix related to select-criterias(filter)
11    #
12    #  Revision 1.47  2004/08/31 14:26:08  jonen
13    #  updated
14    #
15    #  Revision 1.46  2004/05/06 12:54:34  jonen
16    #  + bugfix related to multiple select-'filter'
17    #
18    #  Revision 1.45  2003/12/14 01:48:36  jonen
19    #  small HACK at _insertChildNode: some special Childnodes should not be created because existing objects have to be selected!
20    #  TODO: make this more generic, e.g. implement a special flag at Schema
21    #
22    #  Revision 1.44  2003/12/04 01:01:50  joko
23    #  + sendQuery now returns result even on crud=UPDATE
24    #
25    #  Revision 1.43  2003/07/02 11:07:12  jonen
26    #  re-activate filtering of results *after* results are fetched from tangram
27    #    (needed for e.g. UserManagment)
28    #
29    #  Revision 1.42  2003/07/01 23:24:17  joko
30    #  now using package before using function
31    #
32    #  Revision 1.41  2003/06/29 02:03:45  joko
33    #  fix:? initialize schema on startup
34    #
35    #  Revision 1.40  2003/06/25 22:57:54  joko
36    #  major rework of "sub sendQuery / sub getListFiltered": now should be capable of "sorting"
37    #
38    #  Revision 1.39  2003/06/06 11:40:40  jonen
39    #  fixed bug at 'getFilteredList'
40    #
41  #  Revision 1.38  2003/05/13 16:38:38  joko  #  Revision 1.38  2003/05/13 16:38:38  joko
42  #  problems with "tied" on 5.6.1/win32  #  problems with "tied" on 5.6.1/win32
43  #  #
# Line 157  use base ("Data::Storage::Handler::Abstr Line 192  use base ("Data::Storage::Handler::Abstr
192    
193  use Data::Dumper;  use Data::Dumper;
194  use Tangram;  use Tangram;
195    use Class::Tangram;
196    
197  use DesignPattern::Object;  use DesignPattern::Object;
198  use Data::Storage::Result::Tangram;  use Data::Storage::Result::Tangram;
# Line 166  use Data::Mungle::Transform::Deep qw( ex Line 202  use Data::Mungle::Transform::Deep qw( ex
202  # get logger instance  # get logger instance
203  my $logger = Log::Dispatch::Config->instance;  my $logger = Log::Dispatch::Config->instance;
204    
205    #$Tangram::TRACE = *STDOUT;
206    
207  # this holds the complete instantiated schema from tangram  # this holds the complete instantiated schema from tangram
208  my $schema_tangram;  my $schema_tangram;
# Line 184  sub _initSchema { Line 221  sub _initSchema {
221    #if (!$schema_tangram) {    #if (!$schema_tangram) {
222      #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} } );
223      my $obj = DesignPattern::Object->fromPackage($self->{locator}->{schema}, { 'EXPORT_OBJECTS' => $self->{locator}->{classnames}, 'want_transactions' => $self->{locator}->{want_transactions} } );      my $obj = DesignPattern::Object->fromPackage($self->{locator}->{schema}, { 'EXPORT_OBJECTS' => $self->{locator}->{classnames}, 'want_transactions' => $self->{locator}->{want_transactions} } );
224      $schema_tangram = $obj->getSchema();      $schema_tangram = $obj->getSchema() if $obj;
225    #}    #}
226    if (!$schema_tangram) {    if (!$schema_tangram) {
227      $logger->error( __PACKAGE__ . "->_initSchema: No Schema available for $self->{schema}" );      $logger->error( __PACKAGE__ . "->_initSchema: No Schema available for $self->{locator}->{schema}." );
228      return 0;      return 0;
229    }    }
230    #$self->_patchSchema();    #$self->_patchSchema();
# Line 233  sub connect { Line 270  sub connect {
270  #      return;  #      return;
271  #    }  #    }
272    
273      #return unless $self->_initSchema();      return unless $self->_initSchema();
274      $self->_initSchema();      #$self->_initSchema();
275    
276      # create the main tangram storage object      # create the main tangram storage object
277      #$self->{COREHANDLE} = Tangram::Relational->connect( $schema, $dsn );      #$self->{COREHANDLE} = Tangram::Relational->connect( $schema, $dsn );
# Line 496  sub getListFiltered { Line 533  sub getListFiltered {
533    # redirect to unfiltered mode    # redirect to unfiltered mode
534    #return $self->getListUnfiltered(@_);    #return $self->getListUnfiltered(@_);
535    
536    my $nodename = shift;    my $in = {};
537    my $filters = shift;    $in->{nodename} = shift;
538      $in->{filters} = shift;
539      $in->{sorting} = shift;
540      
541    my @results;    my @results;
542    $logger->debug( __PACKAGE__ . "->getListFiltered( nodename => '" . $nodename . "' )" );    $logger->debug( __PACKAGE__ . "->getListFiltered( nodename => '" . $in->{nodename} . "' )" );
543    
544      #print "Filter_payload: " . Dumper($in->{filters}) . "\n";
545    
546  #print Dumper($filters);    # 1. "Remote Object Handle" - get set of objects from odbms by object name
547      my $remote = $self->{_COREHANDLE}->remote($in->{nodename});
548        
549      # 2. Transfer $in to $orm_query
550      my $orm_query = {};
551      
552      # 2.a. Filters
553    my @tfilters;    my @tfilters;
554      my $orm_filter = undef;
555        
556    foreach my $filter (@$filters) {    foreach my $filter (@{$in->{filters}}) {
557        
558      # get filter - TODO: for each filter      # get filter - TODO: for each filter
559      #my $filter = $filters->[0];      #my $filter = $filters->[0];
560      
561      # build filter      # 1. The parts of a filter source entry
562      my $lexpr = $filter->{key};      my $lexpr = $filter->{key};
563      #my $op = $filter->{op};      #my $op = $filter->{op};
564      my $op = '=';      my $op = '=';
565      my $rexpr = $filter->{val};      my $rexpr = $filter->{val};
566      my $tight = 100;      my $tight = 100;
567    
568        # 2. Build filter target entry
569            
570    #  my $tfilter = Tangram::Filter->new(      # Test 1 - didn't work out!
571    #    expr => "t1.$lexpr $op '$rexpr'",      #  my $tfilter = Tangram::Filter->new(
572    #    tight => $tight,      #    expr => "t1.$lexpr $op '$rexpr'",
573    #    objects => $objects,      #    tight => $tight,
574    #  );      #    objects => $objects,
575          #  );
576    
577        my $orm_filter_tmp = undef;
578        # was:
579      # TODO: is_op?      # TODO: is_op?
580      # dispatch un-common operators if exists      # dispatch un-common operators if exists
581      if($filter->{op} eq "ref") {      if ($filter->{op} eq "ref") {
582        push @tfilters, 'ref($remote->{' . $filter->{key} . '})' . " eq '$filter->{val}'";        # do nothing, results will be filtered later cause 'tangram-filter' doesn't support 'ref' query
583          #print "Filter->op eq 'ref'.\n";
584          #push @tfilters, 'ref($remote->{' . $filter->{key} . '})' . " eq '$filter->{val}'";
585      } else {      } else {
586        # 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
587        push @tfilters, '$remote->{' . $filter->{key} . '}' . " $filter->{op} '$filter->{val}'";        #push @tfilters, '$remote->{' . $filter->{key} . '}' . " $filter->{op} '$filter->{val}'";
588          # better: calculate expression right here!
589          #push @tfilters, '$remote->{' . $filter->{key} . '}' . " $filter->{op} '$filter->{val}'";
590          
591          #print "key: ", $filter->{key}, "\n";
592          
593          my $left = $remote->{$filter->{key}};
594          #my $r = Tangram::Expr->new( 'string' => "'" . $filter->{val} . "'" );
595          my $right = $filter->{val};
596          my $op = $filter->{op};
597          $orm_filter_tmp = $left->$op($right);
598      }      }
599    
600    }      if (!ref($orm_filter)) {
601          $orm_filter = $orm_filter_tmp;
602        } else {
603          $orm_filter = $orm_filter->and($orm_filter_tmp);
604        }
605    
606    my $tfilter = join(' & ', @tfilters);    }
607    
608    # get set of objects from odbms by object name    $orm_query->{filter} = $orm_filter;
   my $remote = $self->{_COREHANDLE}->remote($nodename);  
609        
610      # debug point:
611      #print "Filter: " . Dumper($orm_query->{filter}) . "\n";
612    
613    # was:    # was:
614    #@results = $self->{COREHANDLE}->select($object_set, $tfilter);  
615      # 2.b. sorting [new as of 2003-06-17]
616      if ($in->{sorting}) {
617        my $sorting_rules = [];
618        my $sorting_order = 'ASC';
619        foreach my $sorting_column (keys %{$in->{sorting}}) {
620          $sorting_order = $in->{sorting}->{$sorting_column} if $in->{sorting}->{$sorting_column};
621          push @$sorting_rules, Tangram::Expr->new( 'string' => $sorting_column );
622        }
623        $orm_query->{order} = $sorting_rules;
624        if ($sorting_order eq 'DESC') {
625          $orm_query->{desc} = 1;
626        }
627      }
628    
629    
630      # 3. build and issue query - return result as Tangram::Cursor
631      
632      # coerce hash into array (This is valid in Perl)
633      my @orm_query_args = %$orm_query;
634      # send query (arguments) to orm
635      @results = $self->{_COREHANDLE}->select($remote, @orm_query_args);
636      
637      #my $cursor = $self->{_COREHANDLE}->cursor($remote, @orm_query_args);
638      #return $cursor;
639      #print Dumper(@results);
640    
641    # is:    # is:
642    # 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
643    my $evalstring = 'return $self->{_COREHANDLE}->select($remote, ' . $tfilter . ');';      #my $evalstring = 'return $self->{_COREHANDLE}->select($remote, ' . $tfilter . $sorting . ');';
644          #print "eval: $evalstring", "\n";
645    #print "eval: $evalstring", "\n";      # get filtered list/set
646          #@results = eval($evalstring);
647    # get filtered list/set      #die $@ if $@;
648    @results = eval($evalstring);  
649    die $@ if $@;    # filter results - NEEDED for e.g. UserManagment !!
650      if ($in->{filters}->[0]->{op} && ($in->{filters}->[0]->{op} eq "ref")) {
651          #print "Filter->op eq 'ref'.\n";
652          my $att_name = $in->{filters}->[0]->{key};
653          my $att_val = $in->{filters}->[0]->{val};
654          my @filtered;
655          foreach(@results) {
656            if(ref($_->{$att_name}) eq $att_val) {
657              push @filtered, $_;
658            }
659          }
660          @results = @filtered;
661      }
662    
663      #print "results: " . Dumper(\@results);
664        
665    return \@results;    return \@results;
666  }  }
# Line 580  sub createSet { Line 690  sub createSet {
690    return $result;    return $result;
691  }  }
692    
693    sub createResult {
694      my $self = shift;
695      my $rh = shift;
696      my $result = Data::Storage::Result::Tangram->new( RESULTHANDLE => $rh );
697      return $result;
698    }
699    
700  sub sendQuery {  sub sendQuery {
701    my $self = shift;    my $self = shift;
702    my $query = shift;    my $query = shift;
# Line 613  sub sendQuery { Line 730  sub sendQuery {
730            
731      } elsif (my $guid = $query->{options}->{GUID}) {      } elsif (my $guid = $query->{options}->{GUID}) {
732        $type = 'TRANSPARENT';        $type = 'TRANSPARENT';
733        $query->{criterias} = [ { key => 'guid', op => 'eq', val => $guid } ];            if(ref($query->{criterias}) eq 'ARRAY') {
734            push @{$query->{criterias}}, { key => 'guid', op => 'eq', val => $guid };
735          } else {
736            $query->{criterias} = [ { key => 'guid', op => 'eq', val => $guid } ];
737          }
738        }
739      # if operator is different (dispatcher for 'getListFiltered')      # if operator is different (dispatcher for 'getListFiltered')
740      } elsif (my $op = $query->{options}->{op}) {      if (my $op = $query->{options}->{op}) {
741        $type = 'TRANSPARENT';        $type = 'TRANSPARENT';
742        $query->{criterias} = [ { key => $query->{options}->{meta_label}, op => $op, val => $query->{options}->{meta_value} } ];            if(ref($query->{criterias}) eq 'ARRAY') {
743            push @{$query->{criterias}}, { key => $query->{options}->{meta_label}, op => $op, val => $query->{options}->{meta_value} };
744          } else {
745            $query->{criterias} = [ { key => $query->{options}->{meta_label}, op => $op, val => $query->{options}->{meta_value} } ];    
746          }
747      }      }
748        
749      # HACK: special case: querying by id does not translate into a common tangram query      # HACK: special case: querying by id does not translate into a common tangram query
# Line 671  sub sendQuery { Line 795  sub sendQuery {
795    
796      if ($crud eq 'RETRIEVE') {      if ($crud eq 'RETRIEVE') {
797    
798        my $list = $self->getListFiltered($query->{node}, $query->{criterias});        my $list = $self->getListFiltered($query->{node}, $query->{criterias}, $query->{sorting});
799          #return $list;
800          return $self->createResult($list);
801          
802        #return $self->createSet($object);        #return $self->createSet($object);
803        #return $self->createSet($list);        #return $self->createSet($list);
804        return $self->createSet(@$list);        return $self->createSet(@$list);
# Line 712  sub sendQuery { Line 839  sub sendQuery {
839        my $options = { utf8 => 1, php => 1 };        my $options = { utf8 => 1, php => 1 };
840        merge_to($object, $query->{payload}, $options);        merge_to($object, $query->{payload}, $options);
841    
842          #print Dumper($object);
843          
844        # Execute update operation at orm.        # Execute update operation at orm.
845        $self->update($object);        $self->update($object);
846          $result = $self->createResult([ $object ]);
847            
848      } elsif ($crud eq 'DELETE') {      } elsif ($crud eq 'DELETE') {
849    
# Line 727  sub sendQuery { Line 857  sub sendQuery {
857        my $object = $cursor->getNextEntry();        my $object = $cursor->getNextEntry();
858    
859        $self->erase($object);        $self->erase($object);
860          $self->unload($object);
861    
862      } elsif ($crud eq 'CREATE') {      } elsif ($crud eq 'CREATE') {
863                
864        my $nodename = $query->{node};              my $nodename = $query->{node};      
865        my $newnode = $self->createNode($nodename);        my $newnode = $self->createNode($nodename);
866        my $id = $self->{_COREHANDLE}->insert($newnode);        my $id = $self->{_COREHANDLE}->insert($newnode);
867            
868        print "Saved new node $nodename with GUID $newnode->{guid}, OID '$id': " . Dumper($newnode) . "\n";        $logger->info( __PACKAGE__ . "->sendQuery: Saved new node $nodename with GUID $newnode->{guid}, OID '$id'.");
869                
870        return $newnode;        return $newnode;
871    
# Line 916  sub createNode { Line 1047  sub createNode {
1047        $obj->{$_} = '0000-00-00 00:00:00';        $obj->{$_} = '0000-00-00 00:00:00';
1048      } elsif($attr_types->{$_} eq 'ref') {      } elsif($attr_types->{$_} eq 'ref') {
1049        if($attr_options->{$_}->{class}) {        if($attr_options->{$_}->{class}) {
1050          $obj->{$_} = $self->createNode($attr_options->{$_}->{class});          # HACK!!!
1051            # STANDALONE Objects (objects which make sense to instanciat alone) should not created automaticly
1052            # because they maybe exists and should only be SETTED not CREATED!
1053            # TODO: Create a flag at the scheme for that reason!
1054            #   (e.g child_node => 1 for child-nodes only like e.g. UserData)
1055            if($attr_options->{$_}->{class} eq 'NetPerson' || $attr_options->{$_}->{class} eq 'Event' || $attr_options->{$_}->{class} eq 'BetRule') {
1056              #$obj->{$_} = undef();
1057            } else {
1058              $obj->{$_} = $self->createNode($attr_options->{$_}->{class});
1059            }
1060        } else {        } else {
1061          #$obj->{$_} = undef();          #$obj->{$_} = undef();
1062        }        }
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