New class link to handle links between components and possible errors

docs/linking_errors.md

@@ -0,0 +1,25 @@
+# Handling errors during workflows' post
+
+Every time an user modify a worflow through oc-search's GUI its representation is sent through an XML to oc-catalog API.
+
+To ensure a correct execution of the workflow we must look for irregularities in the workflow's design. Of course an error can be the result of a workflow being currently built by the user, with the corrective action coming.
+
+This document aims at laying down all the requirements that each component must respect and show wether they have been implemented in the code or not.
+
+## Computing
+
+- [x] A computing component must be paired with a datacenter component
+
+## Data
+
+- [x] A data component must be linked to at least one computing component
+
+## Datacenter
+
+- [x] A datacenter component must be linked to at least one computing component
+
+## Storage
+
+- [x] A storage component must have at least one target or be the source of another component 
+ 
+