??? [ModelicaSystem] simplify sendExpression()

Author: syntron

OMPython/ModelicaSystem.py

@@ -46,7 +46,7 @@
 from dataclasses import dataclass
 from typing import Optional
 
-from OMPython.OMCSession import OMCSessionBase, OMCSessionZMQ
+from OMPython.OMCSession import OMCSessionBase, OMCSessionZMQ, OMCSessionException
 
 # define logger using the current module name as ID
 logger = logging.getLogger(__name__)
@@ -369,16 +369,10 @@ def buildModel(self, variableFilter=None):
         self.xmlparse()
 
     def sendExpression(self, expr, parsed=True):
-        logger.debug("sendExpression(%r, %r)", expr, parsed)
-        # TODO: add correct error handling
         try:
             retval = self.getconn.sendExpression(expr, parsed)
-        except Exception as exc:
-            # TODO: need OMCSessionException
-            raise ModelicaSystemError(f"Error executing {repr(expr)}") from exc
-        errstr = self.sendExpression("getErrorString()")
-        if errstr:
-            raise ModelicaSystemError(f"Error executing {repr(expr)} (parsed={parsed}): {errstr}")
+        except OMCSessionException as ex:
+            raise ModelicaSystemError(f"Error executing {repr(expr)}") from ex
         return retval
 
     # request to OMC
@@ -1148,7 +1142,6 @@ def linearize(self, lintime: Optional[float] = None, simflags: Optional[str] = N
             linearFile = pathlib.Path(f'linear_{self.modelName}.py')
 
         if not linearFile.exists():
-            errormsg = self.sendExpression("getErrorString()")
             raise ModelicaSystemError(f"Linearization failed: {linearFile} not found: {errormsg}")
 
         # this function is called from the generated python code linearized_model.py at runtime,