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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=4174 PropertyUtils.setSimpleProperty throws exception on dissimilar types Summary: PropertyUtils.setSimpleProperty throws exception on dissimilar types Product: Struts Version: 1.0 Final Platform: All OS/Version: All Status: NEW Severity: Minor Priority: Other Component: Utilities AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] PropertyUtils.setSimpleProperty is used by CopyProperties in order to (typically) copy properties from a data bean to an action form bean or vice- versa. But, not all getters/setters will always have matching types. CopyProperties throws an exception if setters/getters of the same name exist, but have differing types. This causes a problem, for example if your data bean class has a property: Manager manager; Manager getManager(); And the ActionForm bean has a property: String manager; String getManager(); Where String manager might represent the object ID or primary key of a manager. In this case, additional mapping between properties often follows the CopyProperties call. But with the exception being thrown, CopyProperties doesn't finish its job and copy the rest of the *valid* properties. What we did to get around this for now is to use a subclass of PropertyUtils that overrides setSimplePropery and adds code similar to the following: Class params[] = writeMethod.getParameterTypes(); if(!(value.getClass().isInstance(params[0]))) throw new NoSuchMethodException("Property '" + name + "' has no setter method of the same type"); This alters the behavior to throw an exception that CopyProperties can ignore so that if types don't match it can continue copying the other properties that do. Is this something that should be added to the original method in PropertyUtils?
