Transform java objects to dynamic xml -

i'm working dynamic xml table format consisting of schema specifies column names , types, , values tag contains rows. simplified version of xsd below:

<xs:complextype name="data">     <xs:sequence>         <xs:element name="schema" type="schema"/>         <xs:element name="values" type="values"/>     </xs:sequence> </xs:complextype>  <xs:complextype name="schema">     <xs:anyattribute/> </xs:complextype>  <xs:complextype name="values">     <xs:anyattribute/> </xs:complextype> 

and example xml generated it:

<data>     <schema firstname="string" lastname="string" age="integer">     <values>         <value firstname="a" lastname="b" age="23"/>         <value firstname="c" lastname="d" age="63"/>         …     </values> </data> 

data generate xml comes list of data objects, our example:

public class person {     private string firstname;     private string lastname;     private int age;      // getters , setters… } 

currently i'm creating adding code class (i'm using jaxb generate xml):

private static qname first_name = new qname("firstname"); private static qname last_name = new qname("lastname"); private static qname age = new qname("age");  private static map<qname, string> schema;  static {     schema = new hashmap<qname, string>();     schema.put(first_name, "string");     schema.put(last_name, "string");     schema.put(age, "integer"): }  public map<qname, string> asmap() {     map<qname, string> map = new hashmap<qname, string>();     map.put(first_name, firstname);     map.put(last_name, lastname);     map.put(age, integer.tostring(age)):     return map; }  public static map<qname, string> getschema() {     return schema; } 

and each data object used generate xml. works though don't feel it's best solution. major problem see there no connection between schema , values, if changes in 1 of them have remember update other 1 too. it's bit noisy adding classes.

could suggest better (cleaner/more generic) way of doing this? maybe way auto generate schema and/or values maps? or other suggestion....

(it nicest if have worked given java bean without changing class, i'm fine decorating / adding things class if necessary.)

thanks

the whole problem table dynamic. need be?

if not, solution straightforward, because can make static table , bind java beans using jaxb.

if need dynamic, thing can link static instances of table java beans using custom binder. meaning if have static instance of table contains firstname, lastname , age, can write custom binder generate java beans table, have proper bindings (firstname, lastname , age), you're doing manually. problem approach writing binding tool.

but using off-the-shelf software, easiest thing not use dynamic table , instead write schemas each instance of dynamic table. xml documents these schemas still conform 1 defines dynamic table, allow use jaxb automate code generation , keep java classes in sync xml documents.