[jboss-user] [JBoss Seam] - Re: Stateless search to stateful conversation
justinwalsh
do-not-reply at jboss.com
Thu Jul 20 00:31:40 EDT 2006
Hi,
I've tried this. When the page action is executed, the request parameter is not present yet. A simple example:
ViewDocument:
| @Local
| public interface ViewDocument {
| void selectDocument();
| void destroy();
| }
|
ViewDocumentAction:
| @Stateful
| @Name("viewDocumentAction")
| @Scope(ScopeType.CONVERSATION)
| public class ViewDocumentAction implements ViewDocument {
|
| @RequestParameter
| private Integer documentId;
|
| @Begin
| public void selectDocument() {
| System.out.println("documentId [" + documentId + "]");
| if (documentId == null) {
| throw new IllegalStateException("DocumentId is null");
| }
| }
|
| @Remove @Destroy @End
| public void destroy() {
|
| }
|
| }
|
Invoked from:
| <h:outputLink value="viewDocument.seam" id="viewDocument">
| <h:outputText value="[View Document]"/>
| <f:param name="documentId" value="1" />
| </h:outputLink>
|
pages.xml
| <pages>
| <page view-id="/viewDocument.xhtml" action="#{viewDocumentAction.selectDocument}"/>
| </pages>
|
06:26:49,735 INFO [STDOUT] documentId [null]
06:26:49,735 ERROR [[Faces Servlet]] Servlet.service() for servlet Faces Servlet
threw exception
javax.faces.el.EvaluationException: Exception while invoking expression #{viewDocumentAction.selectDocument}
....
Caused by: javax.ejb.EJBException: java.lang.IllegalStateException: DocumentId is null
at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.ja
va:69)
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