[algorithm] Fix dataformat loading

Currently the loops where skipped because of the way
optional group content where handled.

beat/backend/python/algorithm.py

@@ -494,38 +494,34 @@ class Algorithm(object):
 
                 self.dataformats[input["type"]] = thisformat
 
-            if "outputs" not in group:
-                continue
-
-            for name, output in group["outputs"].items():
-                if output["type"] in self.dataformats:
-                    continue
-
-                if dataformat_cache and output["type"] in dataformat_cache:  # reuse
-                    thisformat = dataformat_cache[output["type"]]
-                else:  # load it
-                    thisformat = dataformat.DataFormat(self.prefix, output["type"])
-                    if dataformat_cache is not None:  # update it
-                        dataformat_cache[output["type"]] = thisformat
+            if "outputs" in group:
+                for name, output in group["outputs"].items():
+                    if output["type"] in self.dataformats:
+                        continue
 
-                self.dataformats[output["type"]] = thisformat
+                    if dataformat_cache and output["type"] in dataformat_cache:  # reuse
+                        thisformat = dataformat_cache[output["type"]]
+                    else:  # load it
+                        thisformat = dataformat.DataFormat(self.prefix, output["type"])
+                        if dataformat_cache is not None:  # update it
+                            dataformat_cache[output["type"]] = thisformat
 
-            if "loop" not in group:
-                continue
+                    self.dataformats[output["type"]] = thisformat
 
-            for name, entry in group["loop"].items():
-                entry_format = entry["type"]
-                if entry_format in self.dataformats:
-                    continue
+            if "loop" in group:
+                for name, entry in group["loop"].items():
+                    entry_format = entry["type"]
+                    if entry_format in self.dataformats:
+                        continue
 
-                if dataformat_cache and entry_format in dataformat_cache:
-                    thisformat = dataformat_cache[entry_format]
-                else:
-                    thisformat = dataformat.DataFormat(self.prefix, entry_format)
-                    if dataformat_cache is not None:
-                        dataformat_cache[entry_format] = thisformat
+                    if dataformat_cache and entry_format in dataformat_cache:
+                        thisformat = dataformat_cache[entry_format]
+                    else:
+                        thisformat = dataformat.DataFormat(self.prefix, entry_format)
+                        if dataformat_cache is not None:
+                            dataformat_cache[entry_format] = thisformat
 
-                self.dataformats[entry_format] = thisformat
+                    self.dataformats[entry_format] = thisformat
 
         if self.results: