public DataObject create(Class interfaceClass) {
if (interfaceClass == null) {
throw new IllegalArgumentException(
SDOException.cannotPerformOperationWithNullInputParameter("create", "interfaceClass"));
}
Type type = getHelperContext().getTypeHelper().getType(interfaceClass);
if (type != null) {
return create(type);
}
// at this point the type may not have been defined or there could be a classloader issue
SDOXMLHelper xmlHelper = (SDOXMLHelper) getHelperContext().getXMLHelper();
ClassLoader contextLoader = xmlHelper.getLoader();
ClassLoader interfaceLoader = interfaceClass.getClassLoader();
boolean loadersAreRelated = false;
// check the hierarchy to see if the interface loader is a parent of the context loader
List<ClassLoader> visitedLoaders = new ArrayList<ClassLoader>();
while (contextLoader != null && !loadersAreRelated) {
if (visitedLoaders.contains(contextLoader)) {
// if we encounter a loader we've already checked, break out
break;
}
visitedLoaders.add(contextLoader);
if (contextLoader == interfaceLoader) {
loadersAreRelated = true;
}
ClassLoader parentLoader = contextLoader.getParent();
if (contextLoader == parentLoader) {
break;
}
contextLoader = parentLoader;
}
throw new IllegalArgumentException(
SDOException.typeNotFoundForInterface(interfaceClass.getName(), loadersAreRelated));
}
