The artifacttype's parent_type definition is error

1. Artifact type  define parent_type, but it shall be statuefulentity,
not string, so the method of is_derived_from in artifact entity may
be error when it's called.
2. The bug will submit to openstack community.

Change-Id: I8e64a28da0287ff5653da69a0cf15016c8ed937f
JIRA: PARSER-53
Signed-off-by: shangxdy <shang.xiaodong@zte.com.cn>

1 files changed, 11 insertions, 3 deletions

diff --git a/tosca2heat/tosca-parser/toscaparser/elements/artifacttype.py b/tosca2heat/tosca-parser/toscaparser/elements/artifacttype.py
index 3bfd7d0..887e99a 100644
--- a/tosca2heat/tosca-parser/toscaparser/elements/artifacttype.py
+++ b/tosca2heat/tosca-parser/toscaparser/elements/artifacttype.py
@@ -20,6 +20,7 @@ class ArtifactTypeDef(StatefulEntityType):
         super(ArtifactTypeDef, self).__init__(atype, self.ARTIFACT_PREFIX,
                                               custom_def)
         self.type = atype
+        self.custom_def = custom_def
         self.properties = None
         if self.PROPERTIES in self.defs:
             self.properties = self.defs[self.PROPERTIES]
@@ -27,17 +28,24 @@ class ArtifactTypeDef(StatefulEntityType):
 
     def _get_parent_artifacts(self):
         artifacts = {}
-        parent_artif = self.parent_type
+        parent_artif = self.parent_type.type if self.parent_type else None
         if parent_artif:
             while parent_artif != 'tosca.artifacts.Root':
+                # only support normative artifact, shall be modified future
                 artifacts[parent_artif] = self.TOSCA_DEF[parent_artif]
                 parent_artif = artifacts[parent_artif]['derived_from']
         return artifacts
 
     @property
     def parent_type(self):
-        '''Return an artifact this artifact is derived from.'''
-        return self.derived_from(self.defs)
+        '''Return a artifact entity from which this entity is derived.'''
+        if not hasattr(self, 'defs'):
+            return None
+        partifact_entity = self.derived_from(self.defs)
+        if partifact_entity:
+            return ArtifactTypeDef(partifact_entity, self.custom_def)
+        else:
+            return None
 
     def get_artifact(self, name):
         '''Return the definition of an artifact field by name.'''