Trouble using Map with h:selectOneMenu...

[Vinnie Jenks]

I have the book "Core JavaServer Faces" and in there it says that I can use a plain Map collection with selectItems in a selectOneMenu.

I'm able to get it to work on one app but not another...using the same JSF implementation on the same app server...so naturally I'm completely confused...to say the least.

I'm using Sun's Glassfish V1 and the official JSF 1.2 reference implementation it comes with. I'm not interested in MyFaces or another alternative...I want to stick w/ the built-in faces impl.

Anyhow, I have an enterprise app that has a page w/ this in it:

<h:selectOneMenu id="searchResultsMenu" value="#{SalesReportBean.itemNumber}">
  <f:selectItems id="searchResultItems" value="#{SalesReportBean.searchedItemNumbers}" />
</h:selectOneMenu>

In the backing-bean, the list is populated like so:

....................
    //map for UI
    Map mappedCodes = new TreeMap();
    
    //turn List items into Map items
    for (ItemCode code : codes)
    {
      mappedCodes.put("-Choose One-", 0);
      mappedCodes.put(code.getItemDescr().trim(), code.getItemDimKey());
    }
    
    //set bean property
    this.setSearchedItemNumbers(mappedCodes);
..................

In another app I've done it *exactly* the same way...

<h:selectOneMenu id="divisionSelect" value="#{ChangeOrdersBean.selectedOrgId}">
  <f:selectItems id="divSelectItems" value="#{ChangeOrdersBean.orgSelectItems}"/>
</h:selectOneMenu>
 
.......................in backing bean...
 
    //init map
    Map items = new TreeMap();
    
    //build map of org values
    for (Organization org : changeOrderBean.getAllOrganizations())
    {
      items.put(org.getIorgDesc().trim(), org.getId().toString());
    }
    
    //set new Map collection
    this.setOrgSelectItems(items);

...but I get an exception!!

exception
 
javax.servlet.ServletException: "Expected a child component type of UISelectItem/UISelectItems for component type javax.faces.SelectOne(divisionSelect).
 
root cause
 
java.lang.IllegalArgumentException: "Expected a child component type of UISelectItem/UISelectItems for component type javax.faces.SelectOne(divisionSelect).

What am I doing wrong? I'm completely stumped. Can I use a Map or not? If no, why did it work once and not twice in *identical* situations!?

Thanks!

[Eugene Abarquez]

Yes, I believe you can populate <h:selectOneMenu> using Map. From the error, it looks like there's a syntax error in your jsp page somewhere.

[Ankur Thakur]

Theist what ever you want to get or to add that must be belong to Select item class or that type always return List
See this code here


public void setSelectSection(String selectSection) {
this.selectSection = selectSection;
}

public List<SelectItem> getSelectSelectioncatagorey() {
selectSelectioncatagorey = new ArrayList<SelectItem>();
selectSelectioncatagorey.add(new SelectItem("", "Select Catagorey"));
selectSelectioncatagorey.add(new SelectItem("PIN", "PIN"));
selectSelectioncatagorey.add(new SelectItem("PRN", "PRN"));
return selectSelectioncatagorey;
}

[Ankur Thakur]

what ever you want to get or to add that must be belong to Select item class or that type always return List
See this code here


public void setSelectSection(String selectSection) {
this.selectSection = selectSection;
}

public List<SelectItem> getSelectSelectioncatagorey() {
selectSelectioncatagorey = new ArrayList<SelectItem>();
selectSelectioncatagorey.add(new SelectItem("", "Select Catagorey"));
selectSelectioncatagorey.add(new SelectItem("PIN", "PIN"));
selectSelectioncatagorey.add(new SelectItem("PRN", "PRN"));
return selectSelectioncatagorey;
}