smiklosovic commented on code in PR #4038:
URL: https://github.com/apache/cassandra/pull/4038#discussion_r2061257282


##########
src/java/org/apache/cassandra/schema/TableMetadata.java:
##########
@@ -602,11 +606,16 @@ public boolean dependsOn(Function function)
 
     public void validate()
     {
-        if (!isNameValid(keyspace))
-            except("Keyspace name must not be empty, more than %s characters 
long, or contain non-alphanumeric-underscore characters (got \"%s\")", 
SchemaConstants.NAME_LENGTH, keyspace);
+        if (!isValidKeyspaceName(keyspace))
+            except("Keyspace name must not be empty, more than %s characters 
long, or contain non-alphanumeric-underscore characters (got \"%s\")", 
NAME_LENGTH, keyspace);

Review Comment:
   The "shortcoming" of the  current approach is that you can not, easily, 
reuse / check if something is valid or not. It is "burried" in 
TableMetadata#validate(). If you extracted it to a helper class, it is there 
for everybody to use easily. 
   
   SchemaConstants do not contain just _contstants_. It already contains 
validation methods etc so I feel this would be a nice fit. 



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