paulk-asert commented on a change in pull request #994: GROOVY-9075: The
exception message should be more clear when a Groovy…
URL: https://github.com/apache/groovy/pull/994#discussion_r314558063
##########
File path: src/main/java/org/codehaus/groovy/runtime/MetaClassHelper.java
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@@ -1016,4 +1018,21 @@ public static String convertPropertyName(String prop) {
}
return BeanUtils.decapitalize(prop);
}
+
+ // GROOVY-9075
+ public static void checkMetaClassProperty(MetaClass oldValue, Object
newValue) {
+ if (null == newValue) return;
+
+ if (!(newValue instanceof MetaClass)) {
+ throw new IllegalArgumentException("the new metaClass[" +
newValue.getClass() + "] is not an instance of " + MetaClass.class);
Review comment:
I think the common convention is upper case for first letter of error
message.
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