--- nfo/perl/libs/Data/Storage/Schema/Abstract.pm	2002/10/25 11:45:10	1.2
+++ nfo/perl/libs/Data/Storage/Schema/Abstract.pm	2002/12/16 06:45:07	1.7
@@ -1,37 +1,53 @@
-###############################################
-#
-#  $Id: Abstract.pm,v 1.2 2002/10/25 11:45:10 joko Exp $
-#
-#  $Log: Abstract.pm,v $
-#  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  ========
@@ -41,6 +57,8 @@
     my @args = ();
     @_ && (@args = @_);
     
+    $logger->debug( __PACKAGE__ . "->new" );
+
     #my $self = { @_ };
 
     # merge all entries from all hashes in args-array to single array (key, val, key, val)
@@ -49,11 +67,13 @@
     # make hash from array
     my %args = @args_all;
 
-    $logger->debug( __PACKAGE__ . "->new( @args_all )" );
+    #$logger->debug( __PACKAGE__ . "->new( @args_all )" );
     
     my $self = { %args };
     bless $self, $class;
 
+    #use Data::Dumper; print Dumper($self);
+
     # remember as which Class we are instantiated
     $self->{invocant} = $invocant;
 
@@ -69,9 +89,9 @@
     my $ctversion = $Class::Tangram::VERSION;
     #print "ctversion: ", $ctversion, "\n";
     #if ($ctversion ne 1.04) {
-    if ($ctversion ne 1.12) {
+    if ($ctversion lt 1.13) {
       print "Version of \"Class::Tangram\": ", $ctversion, "\n";
-      print "absolutely required version: ", "1.12", "\n";
+      print "minimum required version   : ", "1.13", "\n";
       #print "quitting!!! (please install older version (1.04) of \"Class::Tangram\"", "\n";
       exit;
     }
@@ -133,10 +153,21 @@
       $classlist = $packages;
     }
     
+    my $schema_properties = {};
+    if ($self->{invocant}->can('getProperties')) {
+      # TODO: rework this! call by ref and/or do oo
+      #$schema_properties = eval('return ' . $self->{invocant} . '::getProperties();');
+      $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 {
       $logger->debug( __PACKAGE__ . "->_doinit: Initializing Class $_" );
+      Class::Tangram::import_schema($_);
       # classname
       push @classes, $_;
       # schema
@@ -144,25 +175,70 @@
       my $evalstr = '$schema = $' . $_ . '::schema;';
       my $res = eval($evalstr);
       push @classes, $schema;
+      $classindex->{$_} = $schema;
     } @{$classlist};
 
+    # build up the schema as a hash
+    my $schema = { 
+      classes => \@classes,
+    };
+    
+    # merge schema properties
+    foreach (keys %$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
-    # these classes must occour in the same order used at a previous setup
-    $self->{schema} = Tangram::Schema->new({ classes => \@classes });    
+    # a) these classes must occour in the same order used at a previous setup or
+    # b) better use class ids!
+    $self->{schema} = Tangram::Schema->new($schema);
     return 1;
     
+=pod
     # ======================================
-    # template
+    # schema template
     $self->{schema} = Tangram::Schema->new({ 
+
         classes => [ 
-    
           # misc
-            'SystemEvent' => $SystemEvent::schema,
-    
+            'Person' => $Person::schema,
         ],
+
+        make_object => sub { ... },
+        set_id => sub { ... }
+        get_id => sub { ... }
+        normalize => sub { ... },
+
+        control => '...'
+
+        sql => { ... },
+
       });
     # ======================================
-
+=cut
 
   }