/[cvs]/nfo/perl/libs/Data/Storage/Schema/Abstract.pm
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revision 1.1 by joko, Thu Oct 17 00:07:14 2002 UTC revision 1.4 by joko, Fri Nov 15 13:21:39 2002 UTC
# Line 3  Line 3 
3  #  $Id$  #  $Id$
4  #  #
5  #  $Log$  #  $Log$
6    #  Revision 1.4  2002/11/15 13:21:39  joko
7    #  + added capability to propagate global schema options from schema module to tangram schema
8    #
9    #  Revision 1.3  2002/11/09 01:27:23  joko
10    #  + dependency of Class::Tangram now is 1.13 at minimum
11    #
12    #  Revision 1.2  2002/10/25 11:45:10  joko
13    #  + enhanced robustness
14    #  + more logging for debug-levels
15    #
16  #  Revision 1.1  2002/10/17 00:07:14  joko  #  Revision 1.1  2002/10/17 00:07:14  joko
17  #  + new  #  + new
18  #  #
# Line 36  package Data::Storage::Schema::Abstract; Line 46  package Data::Storage::Schema::Abstract;
46      my $class = ref($invocant) || $invocant;      my $class = ref($invocant) || $invocant;
47      my @args = ();      my @args = ();
48      @_ && (@args = @_);      @_ && (@args = @_);
49      #$logger->debug( __PACKAGE__ . "->new(@args)" );      
50      #my $self = { @_ };      #my $self = { @_ };
51    
52      # merge all entries from all hashes in args-array to single array (key, val, key, val)      # merge all entries from all hashes in args-array to single array (key, val, key, val)
# Line 44  package Data::Storage::Schema::Abstract; Line 54  package Data::Storage::Schema::Abstract;
54      map { push(@args_all, %{$_}); } @args;      map { push(@args_all, %{$_}); } @args;
55      # make hash from array      # make hash from array
56      my %args = @args_all;      my %args = @args_all;
57    
58        $logger->debug( __PACKAGE__ . "->new( @args_all )" );
59            
60      my $self = { %args };      my $self = { %args };
61      bless $self, $class;      bless $self, $class;
# Line 63  package Data::Storage::Schema::Abstract; Line 75  package Data::Storage::Schema::Abstract;
75      my $ctversion = $Class::Tangram::VERSION;      my $ctversion = $Class::Tangram::VERSION;
76      #print "ctversion: ", $ctversion, "\n";      #print "ctversion: ", $ctversion, "\n";
77      #if ($ctversion ne 1.04) {      #if ($ctversion ne 1.04) {
78      if ($ctversion ne 1.12) {      if ($ctversion lt 1.13) {
79        print "Version of \"Class::Tangram\": ", $ctversion, "\n";        print "Version of \"Class::Tangram\": ", $ctversion, "\n";
80        print "absolutely required version: ", "1.12", "\n";        print "minimum required version   : ", "1.13", "\n";
81        #print "quitting!!! (please install older version (1.04) of \"Class::Tangram\"", "\n";        #print "quitting!!! (please install older version (1.04) of \"Class::Tangram\"", "\n";
82        exit;        exit;
83      }      }
# Line 76  package Data::Storage::Schema::Abstract; Line 88  package Data::Storage::Schema::Abstract;
88      my $filename = shift;      my $filename = shift;
89      my $exclude_pattern = shift;      my $exclude_pattern = shift;
90      $logger->debug( __PACKAGE__ . "->_parsePackageFile( ... )" );      $logger->debug( __PACKAGE__ . "->_parsePackageFile( ... )" );
91        if (!$filename) {
92          $logger->error( __PACKAGE__ . "->_parsePackageFile: you must specify a filename" );
93          return;
94        }
95        if (! -e $filename) {
96          $logger->error( __PACKAGE__ . "->_parsePackageFile: could not find $filename" );
97        }
98      my @packages = ();      my @packages = ();
99      open(FH, '<' . $filename);      open(FH, '<' . $filename);
100      while (<FH>) {      while (<FH>) {
# Line 109  package Data::Storage::Schema::Abstract; Line 128  package Data::Storage::Schema::Abstract;
128      # parse complete package to build list of classes      # parse complete package to build list of classes
129      if ($#{$classlist} == -1) {      if ($#{$classlist} == -1) {
130        $logger->debug( "_doinit() Initializing all Classes from " . $self->{invocant} );        $logger->debug( "_doinit() Initializing all Classes from " . $self->{invocant} );
131        my $perl_packagename = $self->{invocant};        if (!$self->{invocant}->can('getFilename')) {
132            $logger->error( __PACKAGE__ . "->_doinit: Package $self->{invocant} doesn't contain method 'getFilename'" );
133            return;
134          }
135        my $perl_packagefile = eval('return ' . $self->{invocant} . '::getFilename();');        my $perl_packagefile = eval('return ' . $self->{invocant} . '::getFilename();');
136        my $packages = $self->_parsePackageNamesFromFile($perl_packagefile, $self->{invocant});        my $packages = $self->_parsePackageNamesFromFile($perl_packagefile, $self->{invocant});
137        # TODO:        # TODO:
# Line 117  package Data::Storage::Schema::Abstract; Line 139  package Data::Storage::Schema::Abstract;
139        $classlist = $packages;        $classlist = $packages;
140      }      }
141            
142        my $schema_properties = {};
143        if ($self->{invocant}->can('getProperties')) {
144          $schema_properties = eval('return ' . $self->{invocant} . '::getProperties();');
145        }
146        
147      # build argument to be passed to "Tangram::Schema->new(...)"      # build argument to be passed to "Tangram::Schema->new(...)"
148      my @classes;      my @classes;
149      map {      map {
150        $logger->debug( __PACKAGE__ . "->_doinit() Initializing Class $_" );        $logger->debug( __PACKAGE__ . "->_doinit: Initializing Class $_" );
151        # classname        # classname
152        push @classes, $_;        push @classes, $_;
153        # schema        # schema
154        my $schema;        my $schema;
155        my $evalstr = '$schema = $' . $_ . '::schema;';        my $evalstr = '$schema = $' . $_ . '::schema;';
156        my $res = eval($evalstr);        my $res = eval($evalstr);
       use Data::Dumper;  
157        push @classes, $schema;        push @classes, $schema;
158      } @{$classlist};      } @{$classlist};
159    
160        # build up the schema as a hash
161        my $schema = {
162          classes => \@classes,
163        };
164        
165        # merge schema properties
166        foreach (keys %$schema_properties) {
167          $schema->{$_} = $schema_properties->{$_};
168        }
169        
170      # create a new Tangram schema object      # create a new Tangram schema object
171      # these classes must occour in the same order used at a previous setup      # a) these classes must occour in the same order used at a previous setup or
172      $self->{schema} = Tangram::Schema->new({ classes => \@classes });          # b) better use class ids!
173        $self->{schema} = Tangram::Schema->new($schema);
174      return 1;      return 1;
175            
176    =pod
177      # ======================================      # ======================================
178      # template      # schema template
179      $self->{schema} = Tangram::Schema->new({      $self->{schema} = Tangram::Schema->new({
180    
181          classes => [          classes => [
       
182            # misc            # misc
183              'SystemEvent' => $SystemEvent::schema,              'Person' => $Person::schema,
       
184          ],          ],
185    
186            make_object => sub { ... },
187            set_id => sub { ... }
188            get_id => sub { ... }
189            normalize => sub { ... },
190    
191            control => '...'
192    
193            sql => { ... },
194    
195        });        });
196      # ======================================      # ======================================
197    =cut
198    
199    }    }
200        
# Line 162  package Data::Storage::Schema::Abstract; Line 209  package Data::Storage::Schema::Abstract;
209    sub getSchema {    sub getSchema {
210      my $self = shift;      my $self = shift;
211      if (!$self->{schema}) {      if (!$self->{schema}) {
212        print "schema is not yet initialized!", "\n";        #print "schema is not yet initialized!", "\n";
213        exit;        #exit;
214          $logger->error( __PACKAGE__ . "->getSchema: Schema is not yet initialized!" );
215          return;
216      }      }
217      return $self->{schema};      return $self->{schema};
218    }    }
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