Missing files and requirements

services/bottom/V1.py

@@ -0,0 +1,76 @@
+from uuid import UUID
+from state.base import State
+from services.bottom.V0 import Bottom as BottomV0
+
+
+class Bottom:
+    def __init__(self, model: UUID, state: State):
+        type_model_id = state.read_dict(state.read_root(), "Bottom")
+        self.type_model = UUID(state.read_value(type_model_id))
+        self.model = model
+        self.bottom = BottomV0(state)
+
+    def create_node(self, name: str, value=None):
+
+        if value is None:
+            n = self.bottom.create_node()
+        else:
+            n = self.bottom.create_node(value)
+        self.bottom.create_edge(self.model, n, label=name)
+
+    def create_edge(self, name: str, source: str, target: str):
+        try:
+            src, = self.bottom.read_outgoing_elements(self.model, source)
+        except ValueError:
+            raise RuntimeError(f"No element named {source}")
+        try:
+            tgt, = self.bottom.read_outgoing_elements(self.model, source)
+        except ValueError:
+            raise RuntimeError(f"No element named {target}")
+        e = self.bottom.create_edge(src, tgt)
+        self.bottom.create_edge(self.model, e, label=name)
+
+    def read_value(self, name: str):
+        try:
+            element, = self.bottom.read_outgoing_elements(self.model, name)
+            return self.bottom.read_value(element)
+        except ValueError:
+            raise RuntimeError(f"No element named {name}")
+
+    def read_edge_source(self, name: str):
+        try:
+            element, = self.bottom.read_outgoing_elements(self.model, name)
+            return self.bottom.read_value(element)
+        except ValueError:
+            raise RuntimeError(f"No element named {name}")
+
+    def read_edge_target(self, name: str):
+        pass
+
+    def delete_element(self, name: str):
+        try:
+            element, = self.bottom.read_outgoing_elements(self.model, name)
+            self.bottom.delete_element(element)
+        except ValueError:
+            raise RuntimeError(f"No element named {name}")
+
+    def list_elements(self):
+        tm_names = {}
+        for key in self.bottom.read_keys(self.type_model):
+            element, = self.bottom.read_outgoing_elements(self.type_model, key)
+            tm_names[element] = key
+        unsorted = []
+        for key in self.bottom.read_keys(self.model):
+            element, = self.bottom.read_outgoing_elements(self.model, key)
+            element_types = self.bottom.read_outgoing_elements(element, "Morphism")
+            type_model_elements = self.bottom.read_outgoing_elements(self.type_model)
+            element_type_node, = [e for e in element_types if e in type_model_elements]
+            unsorted.append(f"{key} : {tm_names[element_type_node]}")
+        return sorted(unsorted)
+
+    def to_bottom(self):
+        pass  # already encoded as bottom
+
+    def from_bottom(self):
+        pass  # already encoded as bottom
+