private ValidatorConfig processExpressionValidatorAnnotation(ExpressionValidator v, String fieldName, String methodName) { String validatorType = "expression"; Map<String, Object> params = new HashMap<String, Object>(); if (fieldName != null) { params.put("fieldName", fieldName); } params.put("expression", v.expression()); validatorFactory.lookupRegisteredValidatorType(validatorType); return new ValidatorConfig.Builder(validatorType) .addParams(params) .addParam("methodName", methodName) .shortCircuit(v.shortCircuit()) .defaultMessage(v.message()) .messageKey(v.key()) .messageParams(v.messageParams()) .build(); }