fix: avoid uri shadowing

linkml_runtime/utils/metamodelcore.py

@@ -13,6 +13,10 @@
 from linkml_runtime.utils.namespaces import Namespaces
 from linkml_runtime.utils.strictness import is_strict
 
+from linkml_runtime.utils.uri_validator import validate_uri
+from linkml_runtime.utils.uri_validator import validate_uri_reference
+from linkml_runtime.utils.uri_validator import validate_curie
+
 # Reference Decimal to make sure it stays in the imports
 _z = Decimal(1)
 
@@ -105,17 +109,21 @@ def is_valid(cls, v: Union[str, URIRef, "Curie", "URIorCURIE"]) -> bool:
         if not isinstance(v, (str, URIRef, Curie, URIorCURIE)):
             return False
         v = str(v)
-        if ':' in v and '://' not in v:
-            return URIorCURIE.is_curie(v)
+        if validate_uri(v):
+            return True
+        elif validate_uri_reference(v):
+            return True
         else:
-            return URI.is_valid(v)
+            return URIorCURIE.is_curie(v)
 
     @staticmethod
     def is_absolute(v: str) -> bool:
         return bool(urlparse(v).netloc)
 
     @staticmethod
     def is_curie(v: str, nsm: Optional[Namespaces] = None) -> bool:
+        if not validate_curie(v):
+            return False
         if ':' in v and '://' not in v:
             ns, ln = v.split(':', 1)
             return len(ns) == 0 or (NCName.is_valid(ns) and
@@ -136,13 +144,14 @@ def __init__(self, v: str) -> None:
             raise ValueError(f"'{v}': is not a valid URI")
         super().__init__(v)
 
-    # this is more inclusive than the W3C specification
-    #uri_re = re.compile("^[A-Za-z]\\S*$")
-    uri_re = re.compile("^\\S+$")
-
     @classmethod
     def is_valid(cls, v: str) -> bool:
-        return v is not None and not URIorCURIE.is_curie(v) and cls.uri_re.match(v)
+        if validate_uri(v):
+            return True
+        elif validate_uri_reference(v):
+            return True
+        else:
+            return False
 
 
 class Curie(URIorCURIE):
@@ -174,6 +183,8 @@ def ns_ln(cls, v: str) -> Optional[Tuple[str, str]]:
 
     @classmethod
     def is_valid(cls, v: str) -> bool:
+        if not validate_curie(v):
+            return False
         pnln = cls.ns_ln(v)
         #return pnln is not None and (not pnln[0] or isinstance(pnln[0], PN_PREFIX))
         return pnln is not None