[jboss-user] [Beginners Corner] - Re: jboss-dukes-bank app

[pepelara]

Hi,

I was studying my web app and I have got the problem. It is in the class DefinitionTag that extends SimpleTagSupport. In the method,


  | public void doTag() {
  |         try {
  |             getJspBody()
  |                 .invoke(null);
  |  
  |             Definition definition = new Definition();
  |             PageContext context = (PageContext) getJspContext();
  |             setScreen(screenId);
  |             ArrayList params = (ArrayList) screens.get(this.screenId);
  |             Iterator ir = null;
  |  
  |             if (params != null) {
  |                 ir = params.iterator();
  |                 
  |                 int cont = 0;
  |                 while (ir.hasNext()){
  |                     definition.setParam((Parameter) ir.next());
  |                     cont ++;
  |                 }
  |                 Debug.println("DefinitionTag: params defined: " + cont);
  |                 
  |                 // put the definition in the page context
  |                 context.setAttribute(definitionName, definition,
  |                     PageContext.APPLICATION_SCOPE);
  |             } else {
  |                 Debug.println("DefinitionTag: params are not defined.");
  |             }
  |         } catch (Exception ex) {
  |             ex.printStackTrace();
  |         }
  |     }
  | 

the line ArrayList params = (ArrayList) screens.get(this.screenId); returns null, so the rest of the code


  | if (params != null) {
  |                 ir = params.iterator();
  |                 
  |                 int cont = 0;
  |                 while (ir.hasNext()){
  |                     definition.setParam((Parameter) ir.next());
  |                     cont ++;
  |                 }
  |                 Debug.println("DefinitionTag: params defined: " + cont);
  |                 
  |                 // put the definition in the page context
  |                 context.setAttribute(definitionName, definition,
  |                     PageContext.APPLICATION_SCOPE);
  |             } else {
  |                 Debug.println("DefinitionTag: params are not defined.");
  |             }
  | 

returns, on the console, the message: "DefinitionTag: params are not defined." And it is because the value of this.screenId is,

"${requestScope['javax.servlet.forward.servlet_path']}"

that belong to screendefinitions.jspf as follow,


  | <%@ taglib uri="SimpleTagLibrary" prefix="tt" %>
  | <tt:definition name="bank" screen="${requestScope['javax.servlet.forward.servlet_path']}">
  |   <tt:screen screenId="/main">
  |     <tt:parameter name="title" value="Duke's Bank" direct="true"/>
  |     <tt:parameter name="banner" value="/template/banner.jsp" direct="false"/>
  |     <tt:parameter name="links" value="/template/links.jsp" direct="false"/>
  |     <tt:parameter name="body" value="/main.jsp" direct="false"/>
  |   </tt:screen>
  |   
  |   <tt:screen screenId="/transferAck">
  |     <tt:parameter name="title" direct="true">
  |       <jsp:attribute name="value" >
  |         <fmt:message key="TitleTransferSucceeded"/>
  |       </jsp:attribute>
  |     </tt:parameter>
  |     <tt:parameter name="banner" value="/template/banner.jsp" direct="false"/>
  |     <tt:parameter name="links" value="/template/links.jsp" direct="false"/>
  |     <tt:parameter name="body" value="/transferAck.jsp" direct="false"/>
  |   </tt:screen>
  |   
  |   <tt:screen screenId="/transferFunds">
  |     <tt:parameter name="title" direct="true">
  |       <jsp:attribute name="value" >
  |         <fmt:message key="TitleTransferFunds"/>
  |       </jsp:attribute>
  |     </tt:parameter>
  |     <tt:parameter name="banner" value="/template/banner.jsp" direct="false"/>
  |     <tt:parameter name="links" value="/template/links.jsp" direct="false"/>
  |     <tt:parameter name="body" value="/transferFunds.jsp" direct="false"/>
  |   </tt:screen>
  |   
  |   <tt:screen screenId="/atmAck">
  |     <tt:parameter name="title" direct="true">
  |       <jsp:attribute name="value" >
  |         <fmt:message key="TitleWDSucceeded"/>
  |       </jsp:attribute>
  |     </tt:parameter>
  |     <tt:parameter name="banner" value="/template/banner.jsp" direct="false"/>
  |     <tt:parameter name="links" value="/template/links.jsp" direct="false"/>
  |     <tt:parameter name="body" value="/atmAck.jsp" direct="false"/>
  |   </tt:screen>
  |   
  |   <tt:screen screenId="/atm">
  |     <tt:parameter name="title" direct="true">
  |       <jsp:attribute name="value" >
  |         <fmt:message key="TitleWD"/>
  |       </jsp:attribute>
  |     </tt:parameter>
  |     <tt:parameter name="banner" value="/template/banner.jsp" direct="false"/>
  |     <tt:parameter name="links" value="/template/links.jsp" direct="false"/>
  |     <tt:parameter name="body" value="/atm.jsp" direct="false"/>
  |   </tt:screen>
  |   
  |   <tt:screen screenId="/accountHist">
  |     <tt:parameter name="title" direct="true">
  |       <jsp:attribute name="value" >
  |         <fmt:message key="TitleAccountHistory"/>
  |       </jsp:attribute>
  |     </tt:parameter>
  |     <tt:parameter name="banner" value="/template/banner.jsp" direct="false"/>
  |     <tt:parameter name="links" value="/template/links.jsp" direct="false"/>
  |     <tt:parameter name="body" value="/accountHist.jsp" direct="false"/>
  |   </tt:screen>
  |   
  |   <tt:screen screenId="/accountList">
  |     <tt:parameter name="title" direct="true">
  |       <jsp:attribute name="value" >
  |         <fmt:message key="TitleAccountList"/>
  |       </jsp:attribute>
  |     </tt:parameter>
  |     <tt:parameter name="banner" value="/template/banner.jsp" direct="false"/>
  |     <tt:parameter name="links" value="/template/links.jsp" direct="false"/>
  |     <tt:parameter name="body" value="/accountList.jsp" direct="false"/>
  |   </tt:screen>
  |   
  |   <tt:screen screenId="/logoff">
  |     <tt:parameter name="title" direct="true">
  |       <jsp:attribute name="value" >
  |         <fmt:message key="TitleLogoff" />
  |       </jsp:attribute>
  |     </tt:parameter>
  |     <tt:parameter name="banner" value="/template/banner.jsp" direct="false"/>
  |     <tt:parameter name="links" value="/template/nolinks.jsp" direct="false"/>
  |     <tt:parameter name="body" value="/logoff.jsp" direct="false"/>
  |   </tt:screen>
  | </tt:definition>
  | 

I think the value might to be "/main", "/transferFunds", etc...
and this is my problem.

Will you help me?

Merry Christmas,
Jose Alvarez de Lara(Oggie Svennson)

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