From: Mark Addison <grommit@users.sourceforge.net>
Date: Mon, 29 Sep 2003 11:17:04 +0000 (+0000)
Subject: The data, as it is being parsed, is added to $self->{model}. Anything seen before
X-Git-Tag: v0.04~165
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=0b3f94e0a6702d84d159612c987bedfd634fdb55;p=dbsrgits%2FSQL-Translator.git

The data, as it is being parsed, is added to $self->{model}. Anything seen before
is then looked up in here and reffed so we don't go round in circles! Allows
parser to build up self referncing data structure for the model.

Added associations for classes, linked by the ends.
---

diff --git a/lib/SQL/Translator/XMI/Parser.pm b/lib/SQL/Translator/XMI/Parser.pm
index 0fcf776..b9497be 100644
--- a/lib/SQL/Translator/XMI/Parser.pm
+++ b/lib/SQL/Translator/XMI/Parser.pm
@@ -4,7 +4,7 @@ package SQL::Translator::XMI::Parser;
 
 =head1 NAME
 
-SQL::Translator::XMI::Parser- Perl class for blah blah blah
+SQL::Translator::XMI::Parser
 
 =cut
 
@@ -35,8 +35,9 @@ my $SPECS = {};
 my $spec12 = $SPECS->{"1.2"} = {};
 
 $spec12->{class} = {
-    name   => "class",
-    plural => "classes",
+    name    => "class",
+    plural  => "classes",
+	isRoot  => 1,
     default_path => '//UML:Class[@xmi.id]',
     attrib_data => 
         [qw/name visibility isSpecification isRoot isLeaf isAbstract isActive/],
@@ -236,30 +237,30 @@ $spec10->{attribute} = {
     plural => "attributes",
     default_path => '//Foundation.Core.Attribute[@xmi.id]',
     path_data => [
-        { 
+        {
             name  => "name",
             path  => 'Foundation.Core.ModelElement.name/text()',
         },
-        { 
+        {
             name => "visibility",
             path => 'Foundation.Core.ModelElement.visibility/@xmi.value',
         },
-        { 
+        {
             name => "isSpecification",
             path => 'Foundation.Core.ModelElement.isSpecification/@xmi.value',
         },
-        { 
+        {
             name => "ownerScope",
             path => 'Foundation.Core.Feature.ownerScope/@xmi.value',
         },
-		{ 
+		{
             name  => "initialValue",
             path  => 'Foundation.Core.Attribute.initialValue/Foundation.Data_Types.Expression/Foundation.Data_Types.Expression.body/text()',
         },
-		#{ 
-        #    name  => "datatype",
-        #    path  => 'xmiDeref(Foundation.Core.StructuralFeature.type/Foundation.Core.Classifier)/Foundation.Core.DataType/Foundation.Core.ModelElement.name/text()',
-        #},
+		# {
+        #     name  => "datatype",
+        #     path  => 'xmiDeref(Foundation.Core.StructuralFeature.type/Foundation.Core.Classifier)/Foundation.Core.DataType/Foundation.Core.ModelElement.name/text()',
+        # },
     ],
 };
 
@@ -301,7 +302,7 @@ sub init_specs {
 		foreach ( @{$spec->{kids}} ) {
             $_->{get_method} = "get_".$specs->{$_->{class}}{plural};
         }
-		
+
 		# Add xmi.id ti all specs. Everything we want at the moment (in both
 		# versions) has an id. The tags that don't seem to be used for
 		# structure.
@@ -316,13 +317,12 @@ sub mk_get_dispatch {
     foreach ( values %{$SPECS->{"1.2"}} ) {
         my $name = $_->{plural};
         no strict "refs";
-        
+
         # get_ on parser
-        *{"get_$name"} = sub { 
-			#my $me = shift;
-            #$me->{xmi_get_}{$name}->($me,@_); 
+        my $code = sub { 
             $_[0]->{xmi_get_}{$name}->(@_); 
         };
+        *{"get_$name"} = $code;
     }
 }
 
@@ -362,8 +362,7 @@ sub mk_gets {
     my $specs = shift;
     my $gets;
     foreach ( values %$specs ) {
-        # Clone from specs and sort out the lookups into it so we get a
-        # self contained spec to use as a proper closure.
+        # Clone from specs so we get a proper closure.
         my $spec = dclone($_);
         
         # Add the sub
@@ -404,12 +403,23 @@ sub mk_get {
 #warn "Searching for $spec->{plural} using:$xpath\n";
 
     my @nodes = $xp->findnodes($xpath);
+#warn "None.\n" unless @nodes;
 	return unless @nodes;
 
 	for my $node (@nodes) {
+#warn "    Found $spec->{name} xmi.id=".$node->getAttribute("xmi.id")." name=".$node->getAttribute("name")."\n";
 		my $thing = {};
         # my $thing = { xpNode => $node };
 
+		# Have we seen this before? If so just use the ref we have.
+        if ( my $id = $node->getAttribute("xmi.id") ) {
+            if ( my $foo = $me->{model}{things}{$id} ) {
+#warn "    Reffing from model **********************\n";
+                push @$things, $foo; 
+				next;
+			}
+        }
+
 		# Get the Tag attributes
         foreach ( @{$spec->{attrib_data}} ) {
 			$thing->{$_} = $node->getAttribute($_);
@@ -417,7 +427,7 @@ sub mk_get {
 
         # Add the path data
         foreach ( @{$spec->{path_data}} ) {
-#warn "Searching for $spec->{plural} - $_->{name} using:$_->{path}\n";
+#warn "          $spec->{name} - $_->{name} using:$_->{path}\n";
             my @nodes = $node->findnodes($_->{path});
             $thing->{$_->{name}} = @nodes ? $nodes[0]->getData
                 : (exists $_->{default} ? $_->{default} : undef);
@@ -432,12 +442,22 @@ sub mk_get {
             next unless $filter->($thing);
         }
 
+        # Add anything with an id to the things lookup
+        push @$things, $thing;
+		if ( exists $thing->{"xmi.id"} and defined $thing->{"xmi.id"}
+            and my $id = $thing->{"xmi.id"} 
+        ) {
+			$me->{model}{things}{$id} = $thing; }
+
         # Kids
         #
         foreach ( @{$spec->{kids}} ) {
 			my $data;
             my $meth = $_->{get_method};
             my $path = $_->{path};
+
+			# Variable subs on the path from thing
+			$path =~ s/\$\{(.*?)\}/$thing->{$1}/g;
 			$data = $me->$meth( _context => $node, _xpath => $path,
                 filter => $args{"filter_$_->{name}"} );
 
@@ -451,10 +471,12 @@ sub mk_get {
 				}
             }
         }
+	}
 
-        push @$things, $thing;
+	if ( $spec->{isRoot} ) {
+		push(@{$me->{model}{$spec->{plural}}}, $_) foreach @$things;
 	}
-	return wantarray ? @$things : $things;
+	return $things;
 } # /closure sub
 
 } # /mk_get