Minor additions to backend and meta_info libs.

common/python/nomadcore/local_backend.py

@@ -130,6 +130,8 @@ class LocalBackend(object):
 
             # Check the type
             dtype_str = dataManager.metaInfo.dtypeStr
+            if dtype_str is None:
+                raise TypeError("The metainfo '{}' does not define a dtypeStr".format(metaName))
             single_types = self.single_value_type_for_metainfo_type(dtype_str)
             actual_numpy_type = type(value)
             if actual_numpy_type not in single_types:
@@ -318,14 +320,14 @@ class Results(object):
         if metainfo is None:
             raise LookupError("The metainfo name '{}' does not exist in the metainfo environment. Check for typos or try updating the metainfo git package.".format(metaname))
 
-    def traverse(self):
+    def traverse(self, root_section='section_run'):
         """A generator function for traversing the data in the parser results.
 
         This generator returns a tuple of three item: the metainfo name, the
         event type, and the event value.
         """
-        root = self._sectionmanagers["section_run"]
-        for x in self.traverse_recursive("section_run", root.openSections):
+        root = self._sectionmanagers[root_section]
+        for x in self.traverse_recursive(root_section, root.openSections):
             yield x
 
     def traverse_recursive(self, name, open_sections):
@@ -624,7 +626,7 @@ class SectionManager(object):
             gI = gIndex
         try:
             self.openSections[gI].addValue(valueMetaInfo, value)
-        except KeyError:
+        except (KeyError, IndexError):
             raise Exception("Cannot add value for metadata %s to section %d (%d) of %s, as it is not open" % (valueMetaInfo.name, gI, gIndex, self.metaInfo.name))
 
     def setArrayValues(self, valueMetaInfo, value, offset=None, gIndex=-1):
@@ -634,7 +636,7 @@ class SectionManager(object):
             gI = gIndex
         try:
             self.openSections[gI].setArrayValues(valueMetaInfo, value, offset)
-        except KeyError:
+        except (KeyError, IndexError):
             raise Exception("Cannot set array values for metadata %s to section %d (%d) of %s, as it is not open" % (valueMetaInfo.name, gI, gIndex, self.metaInfo.name))
 
     def addArrayValues(self, valueMetaInfo, value, gIndex=-1):
@@ -644,7 +646,7 @@ class SectionManager(object):
             gI = gIndex
         try:
             self.openSections[gI].addArrayValues(valueMetaInfo, value)
-        except KeyError:
+        except (KeyError, IndexError):
             raise Exception("Cannot add array values for metadata %s to section %d (%d) of %s, as it is not open" % (valueMetaInfo.name, gI, gIndex, self.metaInfo.name))
 
 

common/python/nomadcore/local_meta_info.py

@@ -10,6 +10,7 @@ import json
 import os, re
 from nomadcore.json_support import jsonCompactS, jsonCompactD, jsonIndentD
 from io import open
+import nomad_meta_info
 """objects to handle a local InfoKinds with unique name (think self written json)"""
 
 class InfoKindEl(object):
@@ -183,14 +184,20 @@ class RelativeDependencySolver(object):
         self.deps = {}
 
     def __call__(self, infoKindEnv, source, dep):
-        if "relativePath" not in dep:
-            raise Exception('Invalid dependency for relativeDependencySolver there must be a relativePath')
-        basePath = source.get('path')
+        if "metainfoPath" in dep:
+            basePath = nomad_meta_info.__file__
+            path = dep["metainfoPath"]
+        elif "relativePath" in dep:
+            basePath = source.get('path')
+            path = dep["relativePath"]
+        else:
+            raise Exception('Invalid dependency for relativeDependencySolver there must be a relativePath or metainfoPath')
+
         if basePath:
             baseDir = os.path.dirname(os.path.abspath(basePath))
         else:
             baseDir = os.getcwd()
-        dPath = os.path.realpath(os.path.join(baseDir, dep['relativePath']))
+        dPath = os.path.realpath(os.path.join(baseDir, path))
         if dPath in self.deps:
             return self.deps[dPath]
         depInfo = None