0 Replies Latest reply on Apr 25, 2007 10:17 AM by Giuseppe Stragapede

    Problem with selectItem and primitive data type

    Giuseppe Stragapede Newbie

      Hi all,
      I've experienced a strange problem with managed beans having primitive data type fields.

      This is the scenario:

      // Managed Bean
      public class FormBean implements Serializable {

      private VO vo; // A value object

      private List list2 = new ArrayList();

      public FormBean() {

      // Initialization

      ....
      }

      public void changeOptions() {
      // Populate list2 reading data from the database

      ...
      }

      public List getList2() {
      return list2;
      }

      public void setList2(List list2) {
      this.list2 = list2;
      }

      public VO getVo() {
      return vo;
      }

      public void setVo(VO vo) {
      this.vo = vo;
      }
      }

      public class VO implements Serializable {

      private int id;

      private String name;

      private OtherVO vo; // An other Value Object similar to VO

      public int getId() {
      return id;
      }

      public void setId(int id) {
      this.id = id;
      }

      public String getName() {
      return name;
      }

      public void setName(String name) {
      this.name = name;
      }

      public OtherVO getVo() {
      return vo;
      }

      public void setVo(OtherVO vo) {
      this.vo = vo;
      }
      }

      // Managed Bean
      public class List1 implements Serializable {

      private List list1 = new ArrayList();

      public List1() {

      // Initialize list1:

      SelectItem item = new SelectItem(1, "Item 1");
      list1.add(item);

      item = new SelectItem(2, "Item 2");
      list1.add(item);

      item = new SelectItem(3, "Item 3");
      list1.add(item);

      ...

      }

      public List getList1() {
      return list2;
      }

      public void setList1(List list1) {
      this.list1 = list1;
      }
      }

      The jsp contains this code:

      <h:selectOneMenu value="#{formBean.vo.id}" id="list1" required="true" >
      <f:selectItems value="#{list1Bean.list1}"/>
      <a4j:support event="onchange" action="#{formBean.changeOptions}"
      ajaxSingle="true" reRender="list2" />
      </h:selectOneMenu>

      <h:selectOneMenu value="#{formBean.vo.vo.id}" id="list2" required="false">
      <f:selectItems value="#{formBean.list2Items}"/>
      </h:selectOneMenu>

      If I select a value of list1, an exception is thrown: java.lang.IllegalArgumentException.
      If I change all the int fields in Integer, it works fine. Why? Ajax4sf does not support autoboxing?

      Thanks
      Pippo