[jboss-user] [JBoss Seam] - Re: selectOneMenu - NullPointerException

[siobhan.ernest]

Hi all -

I actually scrapped this code and changed it to the following:

components.xml

 <persistence:managed-persistence-context name="entityManager"
  |                                              auto-create="true"
  |                                              persistence-unit-jndi-name="java:/rte_trackerEntityManagerFactory"/>

plus a list seam-gen generated list bean:

@Name("uploadDefinitionList")
  | public class UploadDefinitionList extends EntityQuery {
  | 
  | 	private static final String[] RESTRICTIONS = {
  | 			"lower(uploadDefinition.name) like concat(lower(#{uploadDefinitionList.uploadDefinition.name}),'%')",
  | 			"lower(uploadDefinition.headers) like concat(lower(#{uploadDefinitionList.uploadDefinition.headers}),'%')",
  | 			"lower(uploadDefinition.matchOn) like concat(lower(#{uploadDefinitionList.uploadDefinition.matchOn}),'%')",
  | 			"lower(uploadDefinition.uploadType) like concat(lower(#{uploadDefinitionList.uploadDefinition.uploadType}),'%')",};
  | 
  | 	private UploadDefinition uploadDefinition = new UploadDefinition();
  | 
  | 	@Override
  | 	public String getEjbql() {
  | 		return "select uploadDefinition from UploadDefinition uploadDefinition";
  | 	}
  | 
  | 	@Override
  | 	public Integer getMaxResults() {
  | 		return 25;
  | 	}
  | 
  | 	public UploadDefinition getUploadDefinition() {
  | 		return uploadDefinition;
  | 	}
  | 
  | 	@Override
  | 	public List<String> getRestrictions() {
  | 		return Arrays.asList(RESTRICTIONS);
  | 	}
  | 
  | }

The upload action:

public abstract class EntityUploadAction {
  |     @Logger
  |     Log log;
  | 
  |     @PersistenceContext
  |     protected EntityManager entityManager;
  | 
  |     @In
  |     protected FacesMessages facesMessages;
  | 
  | 
  |     <snip>
  | 
  | 
  |     protected UploadDefinition selectedUploadDefinition;
  | 
  | 
  |     <snip>
  | 
  |     public UploadDefinition getSelectedUploadDefinition() {
  |         return selectedUploadDefinition;
  |     }
  | 
  |     public void setSelectedUploadDefinition(UploadDefinition selectedUploadDefinition) {
  |         this.selectedUploadDefinition = selectedUploadDefinition;
  |     }
  | 
  |  <snip>
  | }

The upload action is used more than once, so this is extended in other actions.

And finally, the .xhtml

                <s:decorate id="selectedUploadDefinitionnDecoration" template="layout/edit.xhtml">
  |                     <ui:define name="label">Upload Definition</ui:define>
  |                     <h:selectOneMenu value="#{studentUploadService.selectedUploadDefinition}" required="true"
  |                                      id="selectedUploadDefinition">
  |                         <s:selectItems value="#{uploadDefinitionList}" var="ud" label="#{ud.name}"
  |                                        noSelectionLabel="Please Select..."/>
  |                         <s:convertEntity/>
  |                     </h:selectOneMenu>
  |                 </s:decorate>



It all works, and I am happy - just posting this for anyone who might be interested.

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