dodal arff string to orange data table

workflows/cforange/db/package_data.json

@@ -2199,6 +2199,62 @@
       "name": "Utilities"
     }
   },
+  {
+    "pk": 99,
+    "model": "workflows.abstractwidget",
+    "fields": {
+      "category": 13,
+      "treeview_image": "",
+      "name": "ARFF string to Orange Data Table",
+      "is_streaming": false,
+      "uid": "d978d9ba-40dc-427e-b16f-066f13ada8e5",
+      "interaction_view": "",
+      "image": "",
+      "package": "cforange",
+      "static_image": "",
+      "post_interact_action": "",
+      "user": null,
+      "visualization_view": "",
+      "action": "load_dataset_from_arff_string",
+      "wsdl_method": "",
+      "wsdl": "",
+      "interactive": false,
+      "has_progress_bar": false,
+      "order": 1,
+      "description": ""
+    }
+  },
+  {
+    "pk": 189,
+    "model": "workflows.abstractinput",
+    "fields": {
+      "widget": 99,
+      "name": "Arff string",
+      "short_name": "arf",
+      "uid": "",
+      "default": "",
+      "required": false,
+      "multi": false,
+      "parameter_type": null,
+      "variable": "arff",
+      "parameter": false,
+      "order": 1,
+      "description": ""
+    }
+  },
+  {
+    "pk": 111,
+    "model": "workflows.abstractoutput",
+    "fields": {
+      "widget": 99,
+      "name": "Orange Data Table",
+      "short_name": "odt",
+      "variable": "dataset",
+      "uid": "",
+      "order": 1,
+      "description": ""
+    }
+  },
   {
     "pk": 57,
     "model": "workflows.abstractwidget",

workflows/library.py

@@ -563,6 +563,16 @@ def load_dataset(input_dict):
     output_dict = {}
     output_dict['dataset'] = orange.ExampleTable(input_dict['file'])
     return output_dict
+
+def load_dataset_from_arff_string(input_dict):
+    import orange
+    import tempfile
+    f = tempfile.NamedTemporaryFile(delete=False,suffix='.arff')
+    f.write(input_dict['arff'])
+    f.close()
+    output_dict = {}
+    output_dict['dataset'] = orange.ExampleTable(f.name)
+    return output_dict
     
 # SATURATION NOISE FILTER