first of all i want to show you what I want to achieve.I want to Generate a XML file out of classes that will look like the following:\[code\]<config> <criteria name="criteriaName" defaultValue="http://stackoverflow.com/questions/13706993/0"> <item value="http://stackoverflow.com/questions/13706993/1"> <criteria name="criteriaName2" defaultValue=""> <item value="http://stackoverflow.com/questions/13706993/foo"> </item> <item value="http://stackoverflow.com/questions/13706993/bar"> </item> </criteria> </item> <item value="http://stackoverflow.com/questions/13706993/2"> </item> </criteria> <criteria name="criteriaName3" defaultValue=""> <item value="http://stackoverflow.com/questions/13706993/foo"> </item> </criteria></config>\[/code\]Summary:
Criteria has a name and a default value (wich can be String, int ordouble) and x items as childs.
An Item has a value, which must be of the same type of the parents criteria defaultValue.
An Item can also hold another criteria. The type of the defaultValue in the criteria is independent from the parents (item) type
e.g.:\[code\]criteria (type int) item (type int) criteria(type String) item(type String)\[/code\]I also need this model in form of classes because I want to do some validation with it later on.Now I struggle at a specific point, let me show you my classes first:Config:\[code\]@XmlAccessorType(value=http://stackoverflow.com/questions/13706993/XmlAccessType.FIELD)@XmlRootElement(name="config")public class Config { @XmlElement(name = "criteria") private List<Criteria> criteriaList = new ArrayList<Criteria>(); /*getters and setters*/}\[/code\]Criteria:\[code\]@XmlAccessorType(value=http://stackoverflow.com/questions/13706993/XmlAccessType.FIELD)@XmlRootElement(name="criteria")public class Criteria<T> { @XmlAttribute private T key; @XmlAttribute private String display; @XmlAttribute private T defaultValue; private List<Item<T>> items = new ArrayList<Item<T>>(); public T getKey() { return key; } /*getters and setters*/}\[/code\]Item:\[code\]@XmlAccessorType(value=http://stackoverflow.com/questions/13706993/XmlAccessType.FIELD)@XmlRootElement(name="item")public class Item<T>{ @XmlAttribute protected T key; @XmlAttribute protected String display; @XmlElement protected Criteria<T> criteria = new ArrayList<Criteria<T>>(); /*getters and setters*/}\[/code\]With that I can make a Criteria of a specific type, which has items of the same type.Now I want to Insert a Criteria under the Item, that has a different type than the Item, but that is not Possible :\[code\] Config config = new Config(); Criteria<Integer> criteria = new Criteria<Integer>(); Item<Integer> item = new Item<Integer>(); Criteria<String> subCriteria = new Criteria<String>(); //this obviously doesn't work item.getCriteria().add(subCriteria); //<-- criteria.getItems().add(item); config.addCriteria(criteria);\[/code\]I also tried something like this declaration(in Item):\[code\]@XmlElementprotected <U> List<Criteria<U>> criteria;\[/code\]But that is only working for methods, not properties.Can anyone help?Thank you in advance!
