The above exception occurs because the _flowExecutionKey is not found. By encoding the key into the form, it is available and the flow can be maintained.

Further testing with the swf-sellitem-jsf lead to an exception dealing with the insertion of a null value into the database.

categoryForm.jsp contains the following menu

<h:selectOneMenu value="#

">
<f:selectItem
itemLabel="None (0.02 discount rate)"
itemValue=""/>

ICEfaces (and the Sun RI) convert "" selections to null, but
MyFaces does not.

This can be resolved at the application level.

Spring integration currently makes use of encoding _flowExecutionKey into the form as a hidden field. If this hidden field is cleared the Spring flow is lost.

The changes to sellitem-jsf are as follows:

> diff -crb ../sellitem-jsf ../sellitem-icefaces

Only in ../sellitem-icefaces/lib/global: backport-util-concurrent.jar
Only in ../sellitem-icefaces/lib/global: commons-fileupload.jar
Only in ../sellitem-icefaces/lib/global: el-api.jar
Only in ../sellitem-icefaces/lib/global: icefaces-comps.jar
Only in ../sellitem-icefaces/lib/global: icefaces.jar
diff -crb ../sellitem-jsf/src/main/java/org/springframework/webflow/samples/sellitem/Sale.java ../sellitem-icefaces/src/main/java/org/springframework/webflow/samples/sellitem/Sale.java

• • • ../sellitem-jsf/src/main/java/org/springframework/webflow/samples/sellitem/Sale.java Thu Apr 19 14:01:24 2007
    • ../sellitem-icefaces/src/main/java/org/springframework/webflow/samples/sellitem/Sale.java Tue Jun 5 17:21:51 2007
      ***************
    • 37,42 ****
    • 37,45 ----

public void setCategory(String category) {
this.category = category;
+ if (null == category)

}

public int getItemCount() {
diff -crb ../sellitem-jsf/src/main/webapp/WEB-INF/web.xml ../sellitem-icefaces/src/main/webapp/WEB-INF/web.xml

• • • ../sellitem-jsf/src/main/webapp/WEB-INF/web.xml Thu Apr 19 14:01:24 2007
    • ../sellitem-icefaces/src/main/webapp/WEB-INF/web.xml Tue Jun 5 16:55:04 2007
      ***************
    • 12,17 ****
    • 12,32 ----
      </param-value>
      </context-param>

+ <context-param>
+ <param-name>com.icesoft.faces.standardRequestScope</param-name>
+ <param-value>true</param-value>
+ </context-param>
+
+ <context-param>
+ <param-name>com.icesoft.faces.synchronousUpdate</param-name>
+ <param-value>true</param-value>
+ </context-param>
+ <context-param>
+ <param-name>com.icesoft.faces.doJSFStateManagement</param-name>
+ <param-value>true</param-value>
+ </context-param>
+
+
<!-- Bootstraps the root Spring Web Application Context, responsible for deploying managed beans
defined in the configuration files above. These beans represent the services used by the JSF application. -->
<listener>
***************

• • • 23,28 ****
    • 38,47 ----
      <listener-class>org.apache.myfaces.webapp.StartupServletContextListener</listener-class>
      </listener>

+ <listener>
+ <listener-class>com.icesoft.faces.util.event.servlet.ContextEventRepeater</listener-class>
+ </listener>
+
<!-- The front controller for the JSF application, responsible for handling all application requests -->
<servlet>
<servlet-name>Faces Servlet</servlet-name>
***************

• • • 30,39 ****
      <load-on-startup>1</load-on-startup>
      </servlet>

<!-- Map all requests to *.faces to the Faces Servlet for handling -->
<servlet-mapping>
! <servlet-name>Faces Servlet</servlet-name>
! <url-pattern>*.faces</url-pattern>
</servlet-mapping>

<welcome-file-list>
— 49,86 ----
<load-on-startup>1</load-on-startup>
</servlet>

+ <servlet>
+ <servlet-name>Persistent Faces Servlet</servlet-name>
+ <servlet-class>com.icesoft.faces.webapp.xmlhttp.PersistentFacesServlet</servlet-class>
+ <load-on-startup> 1 </load-on-startup>
+ </servlet>
+ <servlet>
+ <servlet-name>Blocking Servlet</servlet-name>
+ <servlet-class>com.icesoft.faces.webapp.xmlhttp.BlockingServlet</servlet-class>
+ <load-on-startup> 1 </load-on-startup>
+ </servlet>
+
+
+ <servlet-mapping>
+ <servlet-name>Persistent Faces Servlet</servlet-name>
+ <url-pattern>*.iface</url-pattern>
+ </servlet-mapping>
+
+ <servlet-mapping>
+ <servlet-name>Persistent Faces Servlet</servlet-name>
+ <url-pattern>/xmlhttp/*</url-pattern>
+ </servlet-mapping>
+
+ <servlet-mapping>
+ <servlet-name>Blocking Servlet</servlet-name>
+ <url-pattern>/block/*</url-pattern>
+ </servlet-mapping>
+
+
<!-- Map all requests to *.faces to the Faces Servlet for handling -->
<servlet-mapping>
! <servlet-name>Persistent Faces Servlet</servlet-name>
! <url-pattern>*.jsp</url-pattern>
</servlet-mapping>

<welcome-file-list>
diff -crb ../sellitem-jsf/src/main/webapp/costOverview.jsp ../sellitem-icefaces/src/main/webapp/costOverview.jsp

• • • ../sellitem-jsf/src/main/webapp/costOverview.jsp Thu Apr 19 14:01:24 2007
    • ../sellitem-icefaces/src/main/webapp/costOverview.jsp Wed Jun 6 09:33:02 2007
      ***************
    • 30,35 ****
    • 30,36 ----
      </tr>
      <tr class="readOnly">
      <td>Category:</td><td><h:outputText value="# {sale.category}"/></td>
      + </tr>
      <tr class="readOnly">
      <td>Shipping:</td>
      <c:choose>
      ***************
      *** 61,67 ****
      </tr>
      <tr>
      <td colspan="2" class="buttonBar">
      ! <form action="<c:url value="/index.faces"/>">
      <input type="submit" class="button" value="Home">
      </form>
      </td>
      — 62,68 ----
      </tr>
      <tr>
      <td colspan="2" class="buttonBar">
      ! <form action="intro.iface">
      <input type="submit" class="button" value="Home">
      </form>
      </td>
      diff -crb ../sellitem-jsf/src/main/webapp/intro.jsp ../sellitem-icefaces/src/main/webapp/intro.jsp
      *** ../sellitem-jsf/src/main/webapp/intro.jsp Thu Apr 19 14:01:24 2007
      — ../sellitem-icefaces/src/main/webapp/intro.jsp Wed Jun 6 13:03:50 2007
      ***************
      *** 14,20 ****
      </h:form>
      </p>
      <p>
      ! <a href="controller.faces?_flowId=sellitem-flow">Sell Item</A> (launch with a regular anchor tag)
      </p>
      <p>
      This Spring Web Flow sample application is the JSF-based version of the familiar "Sell item" sample.
      — 14,20 ----
      </h:form>
      </p>
      <p>
      ! <a href="controller.iface?_flowId=sellitem-flow">Sell Item</A> (launch with a regular anchor tag)
      </p>
      <p>
      This Spring Web Flow sample application is the JSF-based version of the familiar "Sell item" sample.
      diff -crb ../sellitem-jsf/src/main/webapp/shippingDetailsForm.jsp ../sellitem-icefaces/src/main/webapp/shippingDetailsForm.jsp
      *** ../sellitem-jsf/src/main/webapp/shippingDetailsForm.jsp Thu Apr 19 14:01:24 2007
      — ../sellitem-icefaces/src/main/webapp/shippingDetailsForm.jsp Wed Jun 6 13:00:01 2007
      ***************
      *** 29,34 ****
      — 29,35 ----
      </tr>
      <tr class="readOnly">
      <td>Category:</td><td><h:outputText value="#{sale.category}

      "/></td>
      + </tr>
      <tr class="readOnly">
      <td>Shipping:</td><td><h:outputText value="#

      {sale.shipping}

      "/></td>
      </tr>

Will mark as resolved pending testing with a recent ICEfaces build.

Tested ICEfaces 1.6.0.build4 with swf-sellitem.jsf and application functionality is confirmed.