private void activateSelectorFor(IdentityConstraint ic) { Selector selector = ic.getSelector(); FieldActivator activator = this; if (selector == null) return; XPathMatcher matcher = selector.createMatcher(activator, fElementDepth); if (fSchemaVersion == Constants.SCHEMA_VERSION_1_1) { matcher.setXPathDefaultNamespace(selector.getXPathDefaultNamespace()); } fMatcherStack.addMatcher(matcher); matcher.startDocumentFragment(); }