In a web application, we usually convert the request params from String (or String array) to Beans. All web frameworks do that. Is string conversion a topic of Web beans spec? A conversion workflow has usually 3 phases: 1 - inspect the property type: String, Date, Number, beans 2 - do the conversion: "'1" to 1, "01/01/2009" to Date, etc 3 - inject the converted object according the request name: "person.name", "person.age", etc Who would have do this conversion? Thanks.