Introduce method for converting model to object

thoth/adviser/python/package_version.py

@@ -26,6 +26,7 @@
 from thoth.adviser.exceptions import UnsupportedConfiguration
 from thoth.adviser.exceptions import PipfileParseError
 from thoth.adviser.exceptions import InternalError
+from thoth.storages.graph import PythonPackageVersion as PackageVersionModel
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -61,6 +62,18 @@ def __gt__(self, other):
 
         return self.semantic_version > other.semantic_version
 
+    @classmethod
+    def from_model(model: PackageVersionModel, *, develop: bool = False):
+        """Convert database model representation to object representation."""
+        # TODO: add markers to the graph database
+        # TODO: add hashes to the graph database
+        return cls(
+            name=model.package_name,
+            version=model.package_version,
+            develop=develop,
+            index=model.index
+        )
+
     def is_locked(self):
         """Check if the given package is locked to a specific version."""
         return self.version.startswith('==')