How bind object with multiple fields?

[nunya]

How does one bind an object that has >1 field in a rich:picklist or other tag requiring a converter?

I have an ExperimentSpec object, that has a List of LabEquipment objects. LabEquipment has multiple fields: int id, String name, String vendor, String imageLink.

I'm trying to create an addExperimentSpec.xhtml page, where the user can add a new ExperimentSpec to the database. In this page the user would select from a rich:picklist of LabEquipment objects, displayed by name, like this:

<rich:picklist>
<c:forEach var="equip" items="#{labEquipment}">
<f:selectItem itemValue="#{equip}" itemLabel="#{equip.name}"/>
</c:forEach>
</rich:picklist>

This doesn't work, because I need a converter. Unfortunately, I can't see how to create a converter, because I have >1 field... I can convert the LabEquipment to a String name, but I can't convert the String name to a LabEquipment object - I lose the id, vendor, imageLink fields...

Is it even possible to bind multi-field objects to a RichFaces tag, other than a DataTable? It would be nice to be able to do this, b/c all of the objects I'm attempting to bind fit easier in my complex many-many data model.

Thanks,
Nunya

[justinmbirch]

I had to do something similar with a Converter to get a listShuttle to work.

i.e.

 /**
 * @see javax.faces.convert.Converter#getAsObject(javax.faces.context.FacesContext, javax.faces.component.UIComponent, java.lang.String)
 */
 public Object getAsObject( FacesContext context, UIComponent component, String value ) throws ConverterException {
 String[] vals = value.split( ":" );
 return new LabEquipmentId( vals[0], vals[1] );
 }

 /**
 * @see javax.faces.convert.Converter#getAsString(javax.faces.context.FacesContext, javax.faces.component.UIComponent, java.lang.Object)
 */
 public String getAsString( FacesContext context, UIComponent component, Object value ) throws ConverterException {
 LabEquipmentId id = (LabEquipmentId)value;
 return id.getId() + ":" + id.getVendor();
 }

Hope that helps

[nbelaevski]

Hello,

Maybe that will help also: http://www.jboss.org/community/docs/DOC-12018?