stub out a demonstration of how integrative analysis could work

src/portal_visualization/builder_factory.py

@@ -25,6 +25,9 @@ def get_view_config_builder(entity, get_assay):
     hints = [hint for assay in assay_objs for hint in assay.vitessce_hints]
     dag_names = [dag['name']
                  for dag in entity['metadata']['dag_provenance_list'] if 'name' in dag]
+    if 'integrative' in hints:
+        # TODO: confirm the string to be used in the hint.
+        return IntegrativeViewConfBuilder
     if "is_image" in hints:
         if 'sprm' in hints and 'anndata' in hints:
             return MultiImageSPRMAnndataViewConfBuilder

src/portal_visualization/builders/integrative_builders.py

@@ -0,0 +1,18 @@
+from vitessce import VitessceConfig
+
+from .base_builders import ViewConfBuilder
+from ..utils import get_conf_cells
+
+
+class IntegrativeViewConfBuilder(ViewConfBuilder):
+    # TODO: Add a test fixture.
+    # TODO: Determine the name of the property that will hold the viewconfs.
+    # TODO: If https://github.com/hubmapconsortium/portal-visualization/pull/66
+    #       arrives first this can be replaced with:
+    # def get_configs(self):
+    #     return [
+    #         VitessceConfig.from_dict(conf)
+    #         for conf in self._entity['viewconfs']
+    #     ]
+    def get_conf_cells(self):
+        return get_conf_cells(self._entity['viewconfs'])