Added a manage.py command to generate random EM

Lodel/management/commands/emgen.py

@@ -0,0 +1,129 @@
+from django.core.management.base import BaseCommand, CommandError
+from optparse import make_option
+from EditorialModel.model import Model
+from EditorialModel.backend.json_backend import EmBackendJson
+from EditorialModel.backend.dummy_backend import EmBackendDummy
+from EditorialModel.backend.graphviz import EmBackendGraphviz
+
+
+class Command(BaseCommand):
+    option_list = BaseCommand.option_list + (
+        make_option('--no-classes',
+            action='store',
+            dest='classtype',
+            default = 0,
+            help='Chances for a classtype to be empty',
+            type="int",
+            metavar="INT",
+        ),
+        make_option('--max-classes',
+            action='store',
+            dest='nclass',
+            default = 5,
+            help='Maximum number of classes per classtype',
+            type="int",
+            metavar="INT",
+        ),
+        make_option('--no-fieldgroup',
+            action='store',
+            dest='nofg',
+            default = 10,
+            help='Chances for a class to have no fieldgroup',
+            type="int",
+            metavar="INT",
+        ),
+        make_option('--no-types',
+            action='store',
+            dest='notype',
+            default = 5,
+            help='Chances for a class to have no types',
+            type="int",
+            metavar="INT",
+        ),
+        make_option('--sel-opt-field',
+            action='store',
+            dest='seltype',
+            default = 2,
+            help='Chances for type to select an optionnal field',
+            type="int",
+            metavar="INT",
+        ),
+        make_option('--superiors',
+            action='store',
+            dest='ntypesuperiors',
+            default = 3,
+            help='Chances for a type to link with other types (superiors)',
+            type="int",
+            metavar="INT",
+        ),
+        make_option('--no-fields',
+            action='store',
+            dest='nofields',
+            default = 10,
+            help='Chances for a fieldgroup to be empty',
+            type="int",
+            metavar="INT",
+        ),
+        make_option('--max-fields',
+            action='store',
+            dest='nfields',
+            default = 8,
+            help='Maxmimum number of fields per fieldgroup',
+            type="int",
+            metavar="INT",
+        ),
+        make_option('--rel-to-type-attr',
+            action='store',
+            dest='rfields',
+            default = 5,
+            help='Maximum number of relation-to-type attribute fields',
+            type="int",
+            metavar="INT",
+        ),
+        make_option('--opt-field',
+            action='store',
+            dest='optfield',
+            default = 2,
+            help='Chances for a field to be optionnal',
+            type="int",
+            metavar="INT",
+        ),
+        make_option('-o',
+            '--output',
+            action='store',
+            dest='output',
+            default = 'random_me.json',
+            help='json output file for the me',
+            type="string",
+            metavar="FILENAME",
+        ),
+        make_option('-d',
+            '--output-dot',
+            action='store',
+            dest='dotout',
+            default = False,
+            help='graphviz output file for the me',
+            type="string",
+            metavar="FILENAME",
+        ),
+
+
+    )
+    help = 'Randomly generate an EditorialModel'
+
+    def handle(self, *args, **options):
+        anames = ['classtype','nclass', 'nofg', 'notype', 'seltype', 'ntypesuperiors', 'nofields', 'nfields', 'optfield']
+        chances = dict()
+        for n in anames:
+            chances[n] = options[n]
+        
+        bj = EmBackendJson(options['output'])
+
+        em = Model.random(EmBackendDummy())
+        bj.save(em)
+
+        if options['dotout']:
+            gvb = EmBackendGraphviz(options['dotout'])
+            gvb.save(em)
+
+