feat: add Operator.id property

feat: add ability to connect operator as input

src/ansys/dpf/core/dpf_operator.py

@@ -127,6 +127,7 @@ def __init__(self, name, config=None, server=None):
         self._internal_obj = None
         self._description = None
         self._inputs = None
+        self._id = None
 
         # step 1: get server
         self._server = server_module.get_or_create_server(
@@ -226,7 +227,7 @@ def progress_bar(self) -> bool:
     def progress_bar(self, value: bool) -> None:
         self._progress_bar = value
 
-    def connect(self, pin, inpt, pin_out=0):
+    def connect(self, pin, inpt, pin_out=0, operator_as_input=False):
         """Connect an input on the operator using a pin number.
 
         Parameters
@@ -260,7 +261,10 @@ def connect(self, pin, inpt, pin_out=0):
         if inpt is self:
             raise ValueError("Cannot connect to itself.")
         elif isinstance(inpt, Operator):
-            self._api.operator_connect_operator_output(self, pin, inpt, pin_out)
+            if operator_as_input:
+                self._api.operator_connect_operator_as_input(self, pin, inpt)
+            else:
+                self._api.operator_connect_operator_output(self, pin, inpt, pin_out)
         elif isinstance(inpt, Output):
             self._api.operator_connect_operator_output(self, pin, inpt._operator, inpt._pin)
         elif isinstance(inpt, list):
@@ -642,6 +646,15 @@ def config(self, value):
         """
         self._api.operator_set_config(self, value)
 
+    @property
+    def id(self):
+        if self._id is None:
+            operator_id_op = Operator("operator_id")
+            operator_id_op.inputs.operator.connect(self, operator_as_input=True)
+            self._id = operator_id_op.outputs.id()
+
+        return self._id
+
     @property
     def inputs(self):
         """Inputs connected to the operator.

src/ansys/dpf/core/inputs.py

@@ -70,7 +70,7 @@ def __init__(self, spec, pin, operator, count_ellipsis=-1):
             self.name += str(self._count_ellipsis + 1)
         self._update_doc_str(docstr, self.name)
 
-    def connect(self, inpt):
+    def connect(self, inpt, operator_as_input=False):
         """Connect any input (entity or operator output) to a specified input pin of this operator.
 
         Parameters
@@ -85,7 +85,7 @@ def connect(self, inpt):
         # always convert ranges to lists
         if isinstance(inpt, range):
             inpt = list(inpt)
-        elif isinstance(inpt, core.Operator):
+        elif not operator_as_input and isinstance(inpt, core.Operator):
             if hasattr(inpt, "outputs"):
                 inpt = inpt.outputs
             else:
@@ -150,7 +150,7 @@ def connect(self, inpt):
                 corresponding_pins[0][1]: weakref.ref(inpt)
             }
         else:
-            self._operator().connect(self._pin, inpt)
+            self._operator().connect(self._pin, inpt, operator_as_input=operator_as_input)
             self._operator().inputs._connected_inputs[self._pin] = (
                 weakref.ref(inpt) if hasattr(inpt, "__weakref__") else inpt
             )