--- nfo/perl/libs/Data/Storage/Schema/Abstract.pm	2002/11/17 07:21:47	1.6
+++ nfo/perl/libs/Data/Storage/Schema/Abstract.pm	2002/12/16 06:45:07	1.7
@@ -1,49 +1,53 @@
-###############################################
-#
-#  $Id: Abstract.pm,v 1.6 2002/11/17 07:21:47 jonen Exp $
-#
-#  $Log: Abstract.pm,v $
-#  Revision 1.6  2002/11/17 07:21:47  jonen
-#  + using Class::Tangram::import_schema() again for proper usage of its helper functions
-#
-#  Revision 1.5  2002/11/17 07:12:06  joko
-#  + extended ::getProperties with argument "want_transactions"
-#
-#  Revision 1.4  2002/11/15 13:21:39  joko
-#  + added capability to propagate global schema options from schema module to tangram schema
-#
-#  Revision 1.3  2002/11/09 01:27:23  joko
-#  + dependency of Class::Tangram now is 1.13 at minimum
-#
-#  Revision 1.2  2002/10/25 11:45:10  joko
-#  + enhanced robustness
-#  + more logging for debug-levels
-#
-#  Revision 1.1  2002/10/17 00:07:14  joko
-#  + new
-#
-#
-###############################################
+## ------------------------------------------------------------------------
+##  $Id: Abstract.pm,v 1.7 2002/12/16 06:45:07 joko Exp $
+## ------------------------------------------------------------------------
+##  $Log: Abstract.pm,v $
+##  Revision 1.7  2002/12/16 06:45:07  joko
+##  + injecting property 'guid' into each conrete class when initializing the schema
+##
+##  Revision 1.6  2002/11/17 07:21:47  jonen
+##  + using Class::Tangram::import_schema() again for proper usage of its helper functions
+##
+##  Revision 1.5  2002/11/17 07:12:06  joko
+##  + extended ::getProperties with argument "want_transactions"
+##
+##  Revision 1.4  2002/11/15 13:21:39  joko
+##  + added capability to propagate global schema options from schema module to tangram schema
+##
+##  Revision 1.3  2002/11/09 01:27:23  joko
+##  + dependency of Class::Tangram now is 1.13 at minimum
+##
+##  Revision 1.2  2002/10/25 11:45:10  joko
+##  + enhanced robustness
+##  + more logging for debug-levels
+##
+##  Revision 1.1  2002/10/17 00:07:14  joko
+##  + new
+## ------------------------------------------------------------------------
                        
-# ====================================
+
 package Data::Storage::Schema::Abstract;
 
-  use strict;
-  use warnings;
-  
-  use Tangram;
-  use Class::Tangram;
-  
-  use Tangram::RawDate;
-  use Tangram::RawTime;
-  use Tangram::RawDateTime;
-  
-  use Tangram::FlatArray;
-  use Tangram::FlatHash;
-  use Tangram::PerlDump;
+use strict;
+use warnings;
   
-  # get logger instance
-  my $logger = Log::Dispatch::Config->instance;
+use Tangram;
+use Class::Tangram;
+
+use Tangram::RawDate;
+use Tangram::RawTime;
+use Tangram::RawDateTime;
+
+use Tangram::FlatArray;
+use Tangram::FlatHash;
+use Tangram::PerlDump;
+
+
+use Data::Dumper;
+
+# get logger instance
+my $logger = Log::Dispatch::Config->instance;
+
 
 
 # ========   object constructor - %args to $self  ========
@@ -156,6 +160,9 @@
       $schema_properties = eval('return ' . $self->{invocant} . '::getProperties($self->{want_transactions});');
     }
     
+    # build temporary index to look up class by classname
+    my $classindex = {};
+    
     # build argument to be passed to "Tangram::Schema->new(...)"
     my @classes;
     map {
@@ -168,6 +175,7 @@
       my $evalstr = '$schema = $' . $_ . '::schema;';
       my $res = eval($evalstr);
       push @classes, $schema;
+      $classindex->{$_} = $schema;
     } @{$classlist};
 
     # build up the schema as a hash
@@ -179,6 +187,29 @@
     foreach (keys %$schema_properties) {
       $schema->{$_} = $schema_properties->{$_};
     }
+
+#print Dumper($schema);
+
+    # patch guid into each concrete (non-abstract) object
+    # TODO: refactor this code into function: _injectProperty('guid')
+    foreach (@{$schema->{classes}}) {
+      my $ref = ref $_;
+      next if !$ref || $ref ne 'HASH';
+      next if $_->{abstract};
+
+#print Dumper($_);
+
+      if (!$_->{fields}->{string}) {
+        $_->{fields}->{string}->{guid} = undef;
+        
+      } elsif (ref $_->{fields}->{string} eq 'ARRAY') {
+        push @{$_->{fields}->{string}}, 'guid';
+
+      } elsif (ref $_->{fields}->{string} eq 'HASH') {
+        $_->{fields}->{string}->{guid} = undef;
+        
+      }
+    }
     
     # create a new Tangram schema object
     # a) these classes must occour in the same order used at a previous setup or