update pattern extraction

Author: SageGJ

synapseclient/extensions/curator/schema_generation.py

@@ -2893,6 +2893,7 @@ def define_data_model_relationships(self) -> dict:
             allowed_values: A list of values the entry must be  one of
             edge_dir: str, 'in'/'out' is the edge an in or out edge. Define for edge relationships
             jsonld_dir: str, 'in'/out is the direction in or out in the JSONLD.
+            pattern: regex pattern that the entry must match
         """
         map_data_model_relationships = {
             "displayName": {
@@ -4866,6 +4867,14 @@ def __post_init__(self) -> None:
             )
             self.logger.warning(msg)
 
+        if self.pattern:
+            try:
+                re.compile(self.pattern)
+            except re.error as e:
+                raise ValueError(
+                    f"The regex pattern '{self.pattern}' for property '{self.name}' is invalid."
+                ) from e
+
     def _determine_type_and_array(
         self, column_type: Optional[ColumnType]
     ) -> tuple[Optional[AtomicColumnType], Optional[bool]]: