if ( userResourceBundleLocator == null ) {
userResourceBundleLocator = new PlatformResourceBundleLocator( Constants.USER_VALIDATION_MESSAGES );
}
this.userResourceBundleLocator = new CachingResourceBundleLocator( userResourceBundleLocator );
this.defaultResourceBundleLocator =
new CachingResourceBundleLocator(
new PlatformResourceBundleLocator( Constants.DEFAULT_VALIDATION_MESSAGES )
);
}