Improved import/export functionality (packageLibImporter.py -> module_importer.py)

workflows/interaction_views.py

@@ -3,10 +3,10 @@ from django.shortcuts import render
 from decision_support.interaction import *
 from subgroup_discovery.interaction import *
 
-from workflows import packageLibImporter
+from workflows import module_importer
 def setattr_local(name, value, package):
     setattr(sys.modules[__name__], name, value)
-packageLibImporter.importAllPackagesLib("interaction_views",setattr_local)
+module_importer.import_all_packages_libs("interaction_views",setattr_local)
 
 def test_interaction(request,input_dict,output_dict,widget):
     return render(request, 'interactions/test_interaction.html',{'widget':widget})

workflows/latino/settings.py

 import os
 
 # === STANDARD PACKAGE SETTINGS ===
-package_root = os.path.dirname(__file__)
+PACKAGE_ROOT = os.path.dirname(__file__)
 
 # === AUTO IMPORT OPTIONS ===
-#If auto_import_package_data is true then package_data.json file is automatically imported when ClowdFlows project is newly deployed or refreshed from git
-auto_import_package_data = True
+#If auto_import_package_data is true then given data file is automatically imported when ClowdFlows project is newly deployed or refreshed from git
+AUTO_IMPORT_DB = False
 #For auto_import_package_data_replace_option description see the 'replace' option in workflows/import_package command
-auto_import_package_data_replace_option = True
+AUTO_IMPORT_DB_REPLACE_OPTION = True
 #If file(s) other than ./db/package_data.json should be imported, auto_import_package_data_files should be corrected
-auto_import_package_data_files = [os.path.join(package_root,'db/package_data.json')]
+AUTO_IMPORT_DB_FILES = [os.path.join(PACKAGE_ROOT,'db/package_data.json')]
 

workflows/library.py

@@ -6,10 +6,10 @@ import sys
 from decision_support.library import *
 from subgroup_discovery.library import *
 
-from workflows import packageLibImporter
+from workflows import module_importer
 def setattr_local(name, value, package):
     setattr(sys.modules[__name__], name, value)
-packageLibImporter.importAllPackagesLib("library",setattr_local)
+module_importer.import_all_packages_libs("library",setattr_local)
 
 def test_interaction(input_dict):
     return input_dict

workflows/management/commands/export_package.py

@@ -30,110 +30,111 @@ class Command(BaseCommand):
         except:
             raise CommandError('There was a problem with creating/overwriting given output file')
 
-        result = self.export_package_string(self.stdout.write, args[1:], options['newuid'], options['all'], int(options['verbosity']))
+        result = export_package_string(self.stdout.write, args[1:], options['newuid'], options['all'], int(options['verbosity']))
 
         try:
             f.write(result.encode('utf-8'))
         except:
             raise CommandError('There was a problem with writing to the given output file')
 
+        verbosity = int(options['verbosity'])
+        if verbosity>0 and verbosity<3:
+            self.stdout.write('Tip: use higher "verbosity" option numbers to se more detailed output of what is being exported.\n')
         self.stdout.write('Export procedure successfully finished. Results written to the file.\n')
 
-    def print_stataistics(self, objs, verbosity, write):
-        if verbosity > 0:
-            write('Selection contains:\n')
-            write('    % 4i AbstractWidget(s)\n' % len([obj for obj in objs if isinstance(obj, AbstractWidget)]))
-            write('    % 4i AbstractInput(s)\n' % len([obj for obj in objs if isinstance(obj, AbstractInput)]))
-            write('    % 4i AbstractOutput(s)\n' % len([obj for obj in objs if isinstance(obj, AbstractOutput)]))
-            write('    % 4i AbstractOption(s)\n' % len([obj for obj in objs if isinstance(obj, AbstractOption)]))
-            write('    % 4i Category(s)\n' % len([obj for obj in objs if isinstance(obj, Category)]))
-
-            if (verbosity == 1):
-                write('Exported categories:\n')
-            if (verbosity == 2):
-                write('Exported categories and widgets:\n')
-            if (verbosity == 2):
-                write('Exported categories, widgets, inputs, outputs and options:\n')
-            indent = 0
-            indentAddon = 0
-            for obj in objs:
-                s = ''
-                if isinstance(obj, Category):
-                    indent = str(obj).count('::')
-                    s = '% 3i. Category ===== %s =====' % (obj.order, obj)
-                if isinstance(obj, AbstractWidget):
-                    s = '    % 3i. AbstractWidget: %s [%s]' % (obj.order, obj.name, obj.action)
-                if isinstance(obj, AbstractInput):
-                    s = '        % 3i. AbstractInput: (%s) %s' % (obj.order, obj.short_name, obj.name)
-                if isinstance(obj, AbstractOutput):
-                    s = '        % 3i. AbstractOutput: (%s) %s' % (obj.order, obj.short_name, obj.name)
-                if isinstance(obj, AbstractOption):
-                    s = '                AbstractOption: %s | %s' % (obj.name, obj.value)
-
-                if isinstance(obj, Category) or (isinstance(obj, AbstractWidget) and verbosity > 1) or verbosity > 2:
-                    write('    ' * indent + s + '\n')
-
-            self.stdout.write(
-                'Tip: use higher "verbosity" option numbers to se more detailed output of what is being exported.\n')
-
-    def export_package_string(self, write, packages, newuid, all, verbosity):
-        assert isinstance(packages, tuple)
-        assert isinstance(newuid, bool)
-        assert isinstance(all, bool)
-
-        objs = []
-        for topCat in Category.objects.filter(parent = None):
-            objs.extend(self.get_package_objs_in_category(topCat, packages, all))
-
-        if len(objs) == 0:
-            write('Selected package(s) were not found!\n')
-            return "[\\n]"
-
-        #be careful uid is only changed on these instances and is not written to the database
-        if newuid:
-            for a in objs:
-                a.uid = str(uuid.uuid4())
-
-        self.print_stataistics(objs, verbosity, write)
-
-        result = serializers.serialize("json", objs, indent=2, ensure_ascii=False)
-
-        return result
-
-    def get_package_objs_in_category(self, cat, packages, all):
-        assert isinstance(cat, Category)
-        assert isinstance(packages, tuple)
-        assert isinstance(all, bool)
-
-        objs = []
-
-        objs.extend(self.get_package_wids_in_category(cat, packages, all))
-
-        for catChild in cat.children.all():
-            objs.extend(self.get_package_objs_in_category(catChild, packages, all))
-
-        if len(objs)>0:
-            objs.insert(0,cat)
-
-        return objs
-
-    def get_package_wids_in_category(self, cat, packages, all):
-        assert isinstance(cat, Category)
-        assert isinstance(packages, tuple)
-        assert isinstance(all, bool)
-
-        objs = []
-
-        if all:
-            wids = cat.widgets.all()
-        else:
-            wids = cat.widgets.filter(package__in=packages)
-
-        for wid in wids:
-            objs.append(wid)
-            for inp in wid.inputs.all():
-                objs.append(inp)
-                objs.extend(inp.options.all())
-            objs.extend(wid.outputs.all())
-
-        return objs
+def export_package_string(writeFunc, packages, newuid, all, verbosity):
+    assert isinstance(packages, tuple)
+    assert isinstance(newuid, bool)
+    assert isinstance(all, bool)
+
+    objs = []
+    for topCat in Category.objects.filter(parent = None):
+        objs.extend(get_package_objs_in_category(topCat, packages, all))
+
+    if len(objs) == 0:
+        writeFunc('Selected package(s) were not found!\n')
+        return "[\\n]"
+
+    #be careful uid is only changed on these instances and is not written to the database
+    if newuid:
+        for a in objs:
+            a.uid = str(uuid.uuid4())
+
+    print_stataistics(objs, verbosity, writeFunc)
+
+    result = serializers.serialize("json", objs, indent=2, ensure_ascii=False)
+
+    return result
+
+def get_package_objs_in_category(cat, packages, all):
+    assert isinstance(cat, Category)
+    assert isinstance(packages, tuple)
+    assert isinstance(all, bool)
+
+    objs = []
+
+    objs.extend(get_package_wids_in_category(cat, packages, all))
+
+    for catChild in cat.children.all():
+        objs.extend(get_package_objs_in_category(catChild, packages, all))
+
+    if len(objs)>0:
+        objs.insert(0,cat)
+
+    return objs
+
+def get_package_wids_in_category(cat, packages, all):
+    assert isinstance(cat, Category)
+    assert isinstance(packages, tuple)
+    assert isinstance(all, bool)
+
+    objs = []
+
+    if all:
+        wids = cat.widgets.all()
+    else:
+        wids = cat.widgets.filter(package__in=packages)
+
+    for wid in wids:
+        objs.append(wid)
+        for inp in wid.inputs.all():
+            objs.append(inp)
+            objs.extend(inp.options.all())
+        objs.extend(wid.outputs.all())
+
+    return objs
+
+def print_stataistics(objs, verbosity, writeFunc):
+    if verbosity > 0:
+        writeFunc('Selection contains:\n')
+        writeFunc('    % 4i AbstractWidget(s)\n' % len([obj for obj in objs if isinstance(obj, AbstractWidget)]))
+        writeFunc('    % 4i AbstractInput(s)\n' % len([obj for obj in objs if isinstance(obj, AbstractInput)]))
+        writeFunc('    % 4i AbstractOutput(s)\n' % len([obj for obj in objs if isinstance(obj, AbstractOutput)]))
+        writeFunc('    % 4i AbstractOption(s)\n' % len([obj for obj in objs if isinstance(obj, AbstractOption)]))
+        writeFunc('    % 4i Category(s)\n' % len([obj for obj in objs if isinstance(obj, Category)]))
+
+        if (verbosity == 1):
+            writeFunc('Exported categories:\n')
+        if (verbosity == 2):
+            writeFunc('Exported categories and widgets:\n')
+        if (verbosity == 3):
+            writeFunc('Exported categories, widgets, inputs, outputs and options:\n')
+        indent = 0
+
+        for obj in objs:
+            s = ''
+            if isinstance(obj, Category):
+                indent = str(obj).count('::')
+                s = '% 3i. Category ===== %s =====' % (obj.order, obj)
+            if isinstance(obj, AbstractWidget):
+                s = '    % 3i. AbstractWidget: %s [%s]' % (obj.order, obj.name, obj.action)
+            if isinstance(obj, AbstractInput):
+                s = '        % 3i. AbstractInput: (%s) %s' % (obj.order, obj.short_name, obj.name)
+            if isinstance(obj, AbstractOutput):
+                s = '        % 3i. AbstractOutput: (%s) %s' % (obj.order, obj.short_name, obj.name)
+            if isinstance(obj, AbstractOption):
+                s = '                AbstractOption: %s | %s' % (obj.name, obj.value)
+
+            if isinstance(obj, Category) or (isinstance(obj, AbstractWidget) and verbosity > 1) or verbosity > 2:
+                writeFunc('    ' * indent + s + '\n')
+

workflows/management/commands/import_package.py

@@ -34,158 +34,158 @@ class Command(BaseCommand):
         except:
             raise CommandError('There was a problem with opening given input file')
 
-        self.import_package_string(self, string, options['replace'])
+        import_package_string(self.stdout.write, string, options['replace'])
         self.stdout.write('Import procedure successfully finished.\n')
 
-    def import_package_string(self, outWriter, string, replace):
-        #get all objects from file and eliminate empty UID and check for UID duplicates
-        objsFile = list(serializers.deserialize("json", string))
-        objsFileNoUid = [x for x in objsFile if len(x.object.uid) == 0]
-        objsFile = [x for x in objsFile if len(x.object.uid) != 0]
-        if len(objsFileNoUid)>0:
-            outWriter.stdout.write('File contains %i model(s) without UID field set. Those will not be imported! If you wish to'
-                              ' assign them random UIDs then use the "-n" option when exporting models with the "export_package"'
-                              ' command. Afterwards, you will be able to import them.\n' % len(objsFileNoUid))
-        if len(Counter([x.object.uid for x in objsFile])) != len(objsFile):
-            raise CommandError('Input process terminated without any changes to the database. There were multiple equal '
-                               'UIDs defined on different models in the given input file. The input procedure can not continue '
-                               'from safety reasons. Please resolve manually!')
-
-        #divide new objects by type
-        wids = [x for x in objsFile if isinstance(x.object, AbstractWidget)]
-        inps = [x for x in objsFile if isinstance(x.object, AbstractInput)]
-        outs = [x for x in objsFile if isinstance(x.object, AbstractOutput)]
-        opts = [x for x in objsFile if isinstance(x.object, AbstractOption)]
-        cats = [x for x in objsFile if isinstance(x.object, Category)]
-
-        #ouput statistics about file
-        outWriter.stdout.write('Import contains:\n')
-        outWriter.stdout.write('    % 4i AbstractWidget(s)\n' % len(wids))
-        outWriter.stdout.write('    % 4i AbstractInput(s)\n' % len(inps))
-        outWriter.stdout.write('    % 4i AbstractOutput(s)\n' % len(outs))
-        outWriter.stdout.write('    % 4i AbstractOption(s)\n' % len(opts))
-        outWriter.stdout.write('    % 4i Category(s)\n' % len(cats))
-
-        #get all objects from database
-        objsDb = []
-        objsDb.extend(AbstractWidget.objects.all())
-        objsDb.extend(AbstractInput.objects.all())
-        objsDb.extend(AbstractOutput.objects.all())
-        objsDb.extend(AbstractOption.objects.all())
-        objsDb.extend(Category.objects.all())
-
-        #check for DB UID duplicates
-        objsdbDict = dict((x.uid,x) for x in objsDb if len(x.uid) != 0)
-        if len([x for x in objsDb if len(x.uid) != 0]) != len(objsdbDict):
-            raise CommandError('Input process terminated without any changes to the database. There were multiple equal '
-                               'UIDs defined on different models in the database. The input procedure can not continue '
-                               'from safety reasons. Please resolve manually!')
-
-        #create new to existing id mapping and check for type match
-        idMappingDict = dict()
-        for objFile in objsFile:
-            if objsdbDict.has_key(objFile.object.uid):
-                objDb = objsdbDict[objFile.object.uid]
-                objFileTypeId = str(type(objFile.object))+':'+str(objFile.object.id)
-                objDbTypeId = str(type(objDb))+':'+str(objDb.id)
-                if type(objFile.object) == type(objsdbDict[objFile.object.uid]):
-                    idMappingDict[objFileTypeId] = objDb.id
-                else:
-                    raise CommandError('Input process terminated without any changes to the database. Two models match by uid but not '
-                                       'by type:\n    - from file: %s\n    - from database: %s\n    Please resolve manually!'% (objFileTypeId, objDbTypeId))
-
-        #ouput statistics about database
-        outWriter.stdout.write('Current database contains %i models,\n' % len(objsDb))
-        outWriter.stdout.write('    of which %i models have UID set,\n' % len(objsdbDict))
-        outWriter.stdout.write('    of which %i models match with the imported models and will be updated.\n' % len(idMappingDict))
-
-        #prepare statistics
-        statDict = dict([('old:'+str(t),len(t.objects.all())) for t in [AbstractWidget, AbstractInput, AbstractOutput, AbstractOption, Category]])
-        for modelType in [AbstractWidget, AbstractInput, AbstractOutput, AbstractOption, Category]:
-            for operation in ['mod','add','del']:
-                statDict[operation+':'+str(modelType)]=0
-
-        #sort so that AbstractWidgets come in front (are processsed first in the following block)
-        #objsFileNew = []
-        #objsFileNew.extend([objFile for objFile in objsFile if isinstance(objFile.object, AbstractWidget)])
-        #objsFileNew.extend([objFile for objFile in objsFile if not isinstance(objFile.object, AbstractWidget)])
-        #objsFile = objsFileNew
-
-        #save models to the database - update the ids for the matching models and remove the ids (to get a new one) for the non matching models
-        outWriter.stdout.write('Merging file and database models ...')
-        importedUids = dict()
-        for objFile in objsFile:
+def import_package_string(writeFunc, string, replace):
+    #get all objects from file and eliminate empty UID and check for UID duplicates
+    objsFile = list(serializers.deserialize("json", string))
+    objsFileNoUid = [x for x in objsFile if len(x.object.uid) == 0]
+    objsFile = [x for x in objsFile if len(x.object.uid) != 0]
+    if len(objsFileNoUid)>0:
+        writeFunc('File contains %i model(s) without UID field set. Those will not be imported! If you wish to'
+                          ' assign them random UIDs then use the "-n" option when exporting models with the "export_package"'
+                          ' command. Afterwards, you will be able to import them.\n' % len(objsFileNoUid))
+    if len(Counter([x.object.uid for x in objsFile])) != len(objsFile):
+        raise CommandError('Input process terminated without any changes to the database. There were multiple equal '
+                           'UIDs defined on different models in the given input file. The input procedure can not continue '
+                           'from safety reasons. Please resolve manually!')
+
+    #divide new objects by type
+    wids = [x for x in objsFile if isinstance(x.object, AbstractWidget)]
+    inps = [x for x in objsFile if isinstance(x.object, AbstractInput)]
+    outs = [x for x in objsFile if isinstance(x.object, AbstractOutput)]
+    opts = [x for x in objsFile if isinstance(x.object, AbstractOption)]
+    cats = [x for x in objsFile if isinstance(x.object, Category)]
+
+    #ouput statistics about file
+    writeFunc('Import contains:\n')
+    writeFunc('    % 4i AbstractWidget(s)\n' % len(wids))
+    writeFunc('    % 4i AbstractInput(s)\n' % len(inps))
+    writeFunc('    % 4i AbstractOutput(s)\n' % len(outs))
+    writeFunc('    % 4i AbstractOption(s)\n' % len(opts))
+    writeFunc('    % 4i Category(s)\n' % len(cats))
+
+    #get all objects from database
+    objsDb = []
+    objsDb.extend(AbstractWidget.objects.all())
+    objsDb.extend(AbstractInput.objects.all())
+    objsDb.extend(AbstractOutput.objects.all())
+    objsDb.extend(AbstractOption.objects.all())
+    objsDb.extend(Category.objects.all())
+
+    #check for DB UID duplicates
+    objsdbDict = dict((x.uid,x) for x in objsDb if len(x.uid) != 0)
+    if len([x for x in objsDb if len(x.uid) != 0]) != len(objsdbDict):
+        raise CommandError('Input process terminated without any changes to the database. There were multiple equal '
+                           'UIDs defined on different models in the database. The input procedure can not continue '
+                           'from safety reasons. Please resolve manually!')
+
+    #create new to existing id mapping and check for type match
+    idMappingDict = dict()
+    for objFile in objsFile:
+        if objsdbDict.has_key(objFile.object.uid):
+            objDb = objsdbDict[objFile.object.uid]
             objFileTypeId = str(type(objFile.object))+':'+str(objFile.object.id)
-            if isinstance(objFile.object, AbstractWidget):
-                objFile.old_category_id = objFile.object.category_id
-            if isinstance(objFile.object, AbstractInput):
-                objFile.old_widget_id = objFile.object.widget_id
-            if isinstance(objFile.object, AbstractOutput):
-                objFile.old_widget_id = objFile.object.widget_id
-            if isinstance(objFile.object, AbstractOption):
-                objFile.old_abstract_input_id = objFile.object.abstract_input_id
-            if isinstance(objFile.object, Category):
-                if not objFile.object.parent_id is None:
-                    objFile.old_parent_id = objFile.object.parent_id
-
-            if idMappingDict.has_key(objFileTypeId):
-                #there is already an existing model with same uid
-                statDict['mod:'+str(type(objFile.object))]+=1
-                objFile.object.id = idMappingDict[objFileTypeId]
+            objDbTypeId = str(type(objDb))+':'+str(objDb.id)
+            if type(objFile.object) == type(objsdbDict[objFile.object.uid]):
+                idMappingDict[objFileTypeId] = objDb.id
             else:
-                #there is no model jet, add it
-                statDict['add:'+str(type(objFile.object))]+=1
-                objFile.object.id = None
-            objFile.save()
-            idMappingDict[objFileTypeId] = objFile.object.id
-            importedUids[objFile.object.uid]=True
-        outWriter.stdout.write(' done.\n')
-
-        #correct also the foreign keys
-        outWriter.stdout.write('Updating model\'s foreign keys ...')
-        for objFile in wids:
-            objFile.object.category = Category.objects.get(id=idMappingDict[str(Category)+':'+str(objFile.old_category_id)])
-            objFile.save()
-        for objFile in inps:
-            objFile.object.widget = AbstractWidget.objects.get(id=idMappingDict[str(AbstractWidget)+':'+str(objFile.old_widget_id)])
-            objFile.save()
-        for objFile in outs:
-            objFile.object.widget = AbstractWidget.objects.get(id=idMappingDict[str(AbstractWidget)+':'+str(objFile.old_widget_id)])
-            objFile.save()
-        for objFile in opts:
-            objFile.object.abstract_input = AbstractInput.objects.get(id=idMappingDict[str(AbstractInput)+':'+str(objFile.old_abstract_input_id)])
-            objFile.save()
-        for objFile in cats:
+                raise CommandError('Input process terminated without any changes to the database. Two models match by uid but not '
+                                   'by type:\n    - from file: %s\n    - from database: %s\n    Please resolve manually!'% (objFileTypeId, objDbTypeId))
+
+    #ouput statistics about database
+    writeFunc('Current database contains %i models,\n' % len(objsDb))
+    writeFunc('    of which %i models have UID set,\n' % len(objsdbDict))
+    writeFunc('    of which %i models match with the imported models and will be updated.\n' % len(idMappingDict))
+
+    #prepare statistics
+    statDict = dict([('old:'+str(t),len(t.objects.all())) for t in [AbstractWidget, AbstractInput, AbstractOutput, AbstractOption, Category]])
+    for modelType in [AbstractWidget, AbstractInput, AbstractOutput, AbstractOption, Category]:
+        for operation in ['mod','add','del']:
+            statDict[operation+':'+str(modelType)]=0
+
+    #sort so that AbstractWidgets come in front (are processsed first in the following block)
+    #objsFileNew = []
+    #objsFileNew.extend([objFile for objFile in objsFile if isinstance(objFile.object, AbstractWidget)])
+    #objsFileNew.extend([objFile for objFile in objsFile if not isinstance(objFile.object, AbstractWidget)])
+    #objsFile = objsFileNew
+
+    #save models to the database - update the ids for the matching models and remove the ids (to get a new one) for the non matching models
+    writeFunc('Merging file and database models ...')
+    importedUids = dict()
+    for objFile in objsFile:
+        objFileTypeId = str(type(objFile.object))+':'+str(objFile.object.id)
+        if isinstance(objFile.object, AbstractWidget):
+            objFile.old_category_id = objFile.object.category_id
+        if isinstance(objFile.object, AbstractInput):
+            objFile.old_widget_id = objFile.object.widget_id
+        if isinstance(objFile.object, AbstractOutput):
+            objFile.old_widget_id = objFile.object.widget_id
+        if isinstance(objFile.object, AbstractOption):
+            objFile.old_abstract_input_id = objFile.object.abstract_input_id
+        if isinstance(objFile.object, Category):
             if not objFile.object.parent_id is None:
-                objFile.object.parent = Category.objects.get(id=idMappingDict[str(Category)+':'+str(objFile.old_parent_id)])
-                objFile.save()
-        outWriter.stdout.write(' done.\n')
-
-        if replace:
-            outWriter.stdout.write('Removing unnecessary inputs/options/outputs...')
-            for wid in [wid for wid in objsFile if isinstance(wid.object, AbstractWidget)]:
-                for inp in AbstractInput.objects.filter(widget = wid.object.id):
-                    for opt in AbstractOption.objects.filter(abstract_input = inp.id):
-                        if not importedUids.has_key(opt.uid):
-                            statDict['del:'+str(AbstractOption)]+=1
-                            opt.delete()
-                    if not importedUids.has_key(inp.uid):
-                        statDict['del:'+str(AbstractInput)]+=1
-                        inp.delete()
-                for out in AbstractOutput.objects.filter(widget = wid.object.id):
-                    if not importedUids.has_key(out.uid):
-                        statDict['del:'+str(AbstractOutput)]+=1
-                        out.delete()
-            outWriter.stdout.write(' done.\n')
-
-        #update and output statistics
-        statDict = dict(statDict.items() + dict([('new:'+str(t),len(t.objects.all())) for t in [AbstractWidget, AbstractInput, AbstractOutput, AbstractOption, Category]]).items())
-        outWriter.stdout.write('Database models count statistics: pre-import + ( added | modified | deleted ) = after-import\n')
-        for t in [AbstractWidget, AbstractInput, AbstractOutput, AbstractOption, Category]:
-            outWriter.stdout.write('    % 15s: % 5i + (% 4i | % 4i | % 4i ) = % 5i\n' %
-                             (t.__name__,
-                              statDict['old:'+str(t)],
-                              statDict['add:'+str(t)],
-                              statDict['mod:'+str(t)],
-                              statDict['del:'+str(t)],
-                              statDict['new:'+str(t)]))
+                objFile.old_parent_id = objFile.object.parent_id
+
+        if idMappingDict.has_key(objFileTypeId):
+            #there is already an existing model with same uid
+            statDict['mod:'+str(type(objFile.object))]+=1
+            objFile.object.id = idMappingDict[objFileTypeId]
+        else:
+            #there is no model jet, add it
+            statDict['add:'+str(type(objFile.object))]+=1
+            objFile.object.id = None
+        objFile.save()
+        idMappingDict[objFileTypeId] = objFile.object.id
+        importedUids[objFile.object.uid]=True
+    writeFunc(' done.\n')
+
+    #correct also the foreign keys
+    writeFunc('Updating model\'s foreign keys ...')
+    for objFile in wids:
+        objFile.object.category = Category.objects.get(id=idMappingDict[str(Category)+':'+str(objFile.old_category_id)])
+        objFile.save()
+    for objFile in inps:
+        objFile.object.widget = AbstractWidget.objects.get(id=idMappingDict[str(AbstractWidget)+':'+str(objFile.old_widget_id)])
+        objFile.save()
+    for objFile in outs:
+        objFile.object.widget = AbstractWidget.objects.get(id=idMappingDict[str(AbstractWidget)+':'+str(objFile.old_widget_id)])
+        objFile.save()
+    for objFile in opts:
+        objFile.object.abstract_input = AbstractInput.objects.get(id=idMappingDict[str(AbstractInput)+':'+str(objFile.old_abstract_input_id)])
+        objFile.save()
+    for objFile in cats:
+        if not objFile.object.parent_id is None:
+            objFile.object.parent = Category.objects.get(id=idMappingDict[str(Category)+':'+str(objFile.old_parent_id)])
+            objFile.save()
+    writeFunc(' done.\n')
+
+    if replace:
+        writeFunc('Removing unnecessary inputs/options/outputs...')
+        for wid in [wid for wid in objsFile if isinstance(wid.object, AbstractWidget)]:
+            for inp in AbstractInput.objects.filter(widget = wid.object.id):
+                for opt in AbstractOption.objects.filter(abstract_input = inp.id):
+                    if not importedUids.has_key(opt.uid):
+                        statDict['del:'+str(AbstractOption)]+=1
+                        opt.delete()
+                if not importedUids.has_key(inp.uid):
+                    statDict['del:'+str(AbstractInput)]+=1
+                    inp.delete()
+            for out in AbstractOutput.objects.filter(widget = wid.object.id):
+                if not importedUids.has_key(out.uid):
+                    statDict['del:'+str(AbstractOutput)]+=1
+                    out.delete()
+        writeFunc(' done.\n')
+
+    #update and output statistics
+    statDict = dict(statDict.items() + dict([('new:'+str(t),len(t.objects.all())) for t in [AbstractWidget, AbstractInput, AbstractOutput, AbstractOption, Category]]).items())
+    writeFunc('Database models count statistics: pre-import + ( added | modified | deleted ) = after-import\n')
+    for t in [AbstractWidget, AbstractInput, AbstractOutput, AbstractOption, Category]:
+        writeFunc('    % 15s: % 5i + (% 4i | % 4i | % 4i ) = % 5i\n' %
+                         (t.__name__,
+                          statDict['old:'+str(t)],
+                          statDict['add:'+str(t)],