public List<Employee> getEmployeeUsingCustomQuery(String name) {

//creating query on the basis of empName
 String statement = "select empName, empId, META().id AS _ID, META().cas AS _CAS from Bucket1 where empName=$empName";
 JsonObject placeHolder = JsonObject.create().put("empName", name);
 N1qlQuery n1qlQuery = N1qlQuery.parameterized(statement, placeHolder);
 //findbyN1QL method query the N!QL service and mapped to the Employee class.
 return couchbaseTemplate.findByN1QL(n1qlQuery, Employee.class);
 }