ArrayList populates twice

Hi Gurus,
I have a form that has a selectOneMenu. The drop down displays the correct data but it list it twice. I did see some other people on-line had this problem but I did not see a solution that would work for me. Below is my backing bean and jsf page. It is pretty simple code. I am just missing something......... :( thanks
public List getProgList() {
System.out.println("Making prog List");
try {
DADFacadeLocal srLocal =
(DADFacadeLocal)new InitialContext().lookup("java:comp/env/ejb/DADFacade");
FacesContext ctx = FacesContext.getCurrentInstance();
List programList = srLocal.queryProgramCodesFindAll();
Iterator it = programList.iterator();
while(it.hasNext()){
ProgramCodes programCodes = (ProgramCodes)it.next();
SelectItem sItem = new SelectItem();
String progCode = programCodes.getProgramCode();
String progName = programCodes.getProgramCode() + " -- " + programCodes.getDescription();
sItem.setLabel(progName);
sItem.setValue(progCode);
progList.add(sItem);
} catch (NamingException e) {
// TODO
e.printStackTrace();
return progList;
<body><h:form binding="#{backing_req_request.form1}" id="form1">
<h:selectOneMenu binding="#{backing_req_request.selectOneMenu1}"
id="selectOneMenu1">
<f:selectItems value="#{backing_req_request.progList}"
binding="#{backing_req_request.selectItems1}"
id="selectItems1"/>
</h:selectOneMenu>
</h:form></body>

I get around this by filling my drop down ArrayLists is separate methods that always start with a new ArrayList()
Here is a simple sample of a canned list and associated code from JSP file.
SessionBean1 has
ArrayList noYesList = yesNoList();
 public ArrayList noYesList()
 ArrayList alist = new ArrayList();
 alist.add( new SelectItem( "0", "No"));
 alist.add( new SelectItem( "1", "Yes"));
 return alist;
 } <h:selectOneMenu binding="#{SessionBean1.noYesDD}" id="noYesDD"
 style="height: 22px; left: 220px; position: absolute; width: 60px" value="#{SessionBean1.selectedNoYes}">
 <f:selectItems binding="#{SessionBean1.noYesData}" id="noYesDD" value="#{SessionBean1.noYesList}"/>
 </h:selectOneMenu>

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Collections.sort( detailsArrayListLeft, SORT_BY_SEQUENCE );
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Hi Daniel
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Hi Daniel
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I have a sample with pageflowscoped bean and requestscoped bean that I can send you if you provide your email address.
Unfortunately we cannot attach files in the newsgroup.
Thanks
Vimala

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Populate an arraylist....

Hi guys,
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Submit twice ?

Hello all.
I'm writing a jsf app that takes an input form, validates it, and then
forwards the user to a confirmation page.
Pretty straightforward, very similar to jsf tutorials.
However, once I added selectOneMenu items, I now find
myself having to submit the form twice before getting the
confirmation page.
The selectOneMenu items do have valueChangeListener
routines in the backing bean, because if I did not include
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boxes.
The form is submitted by a commandButton, which calls a
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cause this, but I have not been able to make it work right.
Has anyone come across this behavior in jsf ?
If anyone is interested, I can email a jar with the source,
xml (faces-config.xml, web.xml), and jsp files.
There seems no way to attach it in the forums.
I can, however, post snippets of how I code the drop-downs:
jsp file:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
 <td align="left">
 <h:selectOneMenu value="#{data.state}"
 valueChangeListener="#{data.stateSelected}">
 <f:selectItems value="#{data.statelist}"/>
 </h:selectOneMenu>
 </td>
java source:
(drop-downs populate fine......)
 public Collection getStatelist(){
 //System.out.println(getLogtime() + "DataBean: getStates()");
 if (sdata==null)
 try{
 populateStates();
 } catch(SQLException sqlEx) {
 logger.log(Level.SEVERE, "loginAction", sqlEx);
 } catch(NamingException nameEx) {
 logger.log(Level.SEVERE, "loginAction", nameEx);
 } catch(Exception Ex) {
 System.out.println(getLogtime() + "DataBean: getStates() Exception!");
 //System.out.println(" nbr of state records: [" + sdata.size() + "]");
 System.out.println(" msg: [" + Ex.getMessage() + "]");
 //return sdata;
 //System.out.println(getLogtime() + "DataBean: nbr of State records: [" + sdata.size() + "]");
 return sdata;
 public void populateStates()
 throws SQLException, NamingException
 //System.out.println("DataBean: populateStates()...");
 //ctx = new InitialContext();
 ctx = new InitialContext(System.getProperties());
 if(ctx==null){
 throw new NamingException("DataBean: No initial context");
 ds = (DataSource)ctx.lookup("java:/comp/env/jdbc/testdataDS");
 if(ds==null){
 System.out.println("DataBean: no data source!!");
 throw new NamingException("No data source");
 //System.out.println("DataBean: getConnection...");
 try {
 conn = ds.getConnection();
 if(conn==null) {
 System.out.println("DataBean: no connection!!");
 throw new SQLException("DataBean: No database connection");
 } else {
 PreparedStatement dataQuery = conn.prepareStatement(
 "SELECT state_code, state_name FROM state ORDER BY state_code");
 ResultSet result = dataQuery.executeQuery();
 sdata = new ArrayList();
 sdata.add(new SelectItem(" ","Please select one"));
 if(!result.next()){
 return;
 } else {
 sdata.add(new SelectItem(result.getString("state_code")
 ,result.getString("state_name")));
 while(result.next()){
 sdata.add(new SelectItem(result.getString("state_code")
 ,result.getString("state_name")));
 } catch(SQLException se){
 System.out.println("DataBean: populateStates() - connection/statement/execute : ");
 System.out.println(" message: [" + se.getMessage() + "]");
 //se.printStackTrace();
 // look at the warnings issued it should help you resolve the problem
 SQLWarning warning = null;
 try {
 // Get SQL warnings issued
 //warning = conget.getWarnings();
 warning = (SQLWarning)se.getNextException();
 if (warning == null) {
 System.out.println("DataBean: populateStates()could not get sql warnings");
 } else {
 //while (warning != null) {
 System.out.println("DataBean populateStates() - Warning: " + warning);
 //warning = warning.getNextWarning();
 // warning = (SQLWarning)se.getNextException();
 } catch (Exception we) {
 System.out.println("DataBean populateStates() - SQLException !!");
 System.out.println(" msg: [" + we.getMessage() + "]");
 sdata = new ArrayList();
 } catch (Exception e) {
 System.out.println("DataBean: populateStates() lookup exception:");
 System.out.println(" msg: [" + e.getMessage() + "]");
 e.printStackTrace();
 sdata = new ArrayList();
 } finally {
 conn.close();
faces-config.xml:
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE faces-config PUBLIC
 "-//Sun Microsystems, Inc.//DTD JavaServer Faces Config 1.1//EN"
 "http://java.sun.com/dtd/web-facesconfig_1_1.dtd">
<faces-config>
 <application>
 <locale-config>
 <default-locale>en</default-locale>
 <supported-locale>en</supported-locale>
 <supported-locale>en_US</supported-locale>
 
 </locale-config>
 
 </application>
 
 <managed-bean>
 <managed-bean-name>data</managed-bean-name>
 <managed-bean-class>edu.msu.hit.data.DataBean</managed-bean-class>
 <managed-bean-scope>session</managed-bean-scope>
 </managed-bean>
 
 <navigation-rule>
 <description>Test select one page</description>
 <from-view-id>/testSelectOnePage.jsp</from-view-id>
 
 <navigation-case>
 <from-outcome>success</from-outcome>
 <to-view-id>/testSelectOneConfirm.jsp</to-view-id>
 </navigation-case>
 </navigation-rule>
</faces-config>
web.xml:
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
 <display-name>MyFaces Demo</display-name>
 <description>a Myfaces demo page</description>
 
 
 
 <servlet>
 <servlet-name>Faces Servlet</servlet-name>
 <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
 <load-on-startup>1</load-on-startup>
 </servlet>
 
 <servlet-mapping>
 <servlet-name>Faces Servlet</servlet-name>
 <url-pattern>*.faces</url-pattern>
 </servlet-mapping>
 <resource-ref>
 <description>Sybase Datasource resource</description>
 <res-ref-name>jdbc/testdataDS</res-ref-name>
 <res-type>javax.sql.DataSource</res-type>
 <res-auth>Container</res-auth>
 </resource-ref>
 <welcome-file-list>
 <welcome-file>index.html</welcome-file>
 <welcome-file>index.jsp</welcome-file>
 </welcome-file-list>
 <context-param>
 <param-name>com.sun.faces.validateXml</param-name>
 <param-value>false</param-value>
 <description>
 Set this flag to true if you want the JavaServer Faces
 Reference Implementation to validate the XML in your
 faces-config.xml resources against the DTD. Default
 value is false.
 </description>
 </context-param>
 <context-param>
 <param-name>log4jConfigLocation</param-name>
 <param-value>/WEB-INF/log4j.properties</param-value>
 </context-param>
 
 <context-param>
 <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
 <param-value>client</param-value>
 <description>
 State saving method: "client" or "server" (= default)
 See JSF Specification 2.5.2
 </description>
 </context-param>
 <context-param>
 <param-name>org.apache.myfaces.ALLOW_JAVASCRIPT</param-name>
 <param-value>true</param-value>
 <description>
 This parameter tells MyFaces if javascript code should be allowed in the
 rendered HTML output.
 If javascript is allowed, command_link anchors will have javascript code
 that submits the corresponding form.
 If javascript is not allowed, the state saving info and nested parameters
 will be added as url parameters.
 Default: "true"
 </description>
 </context-param>
 <context-param>
 <param-name>org.apache.myfaces.PRETTY_HTML</param-name>
 <param-value>true</param-value>
 <description>
 If true, rendered HTML code will be formatted, so that it is "human readable".
 i.e. additional line separators and whitespace will be written, that do not
 influence the HTML code.
 Default: "true"
 </description>
 </context-param>
 <context-param>
 <param-name>org.apache.myfaces.DETECT_JAVASCRIPT</param-name>
 <param-value>false</param-value>
 </context-param>
 <context-param>
 <param-name>org.apache.myfaces.AUTO_SCROLL</param-name>
 <param-value>true</param-value>
 <description>
 If true, a javascript function will be rendered that is able to restore the
 former vertical scroll on every request. Convenient feature if you have pages
 with long lists and you do not want the browser page to always jump to the top
 if you trigger a link or button action that stays on the same page.
 Default: "false"
 </description>
 </context-param>
 
 
 <context-param>
 <param-name>org.apache.myfaces.ADD_RESOURCE_CLASS</param-name>
 <param-value>org.apache.myfaces.renderkit.html.util.DefaultAddResource</param-value>
 </context-param>
 <context-param>
 <param-name>org.apache.myfaces.redirectTracker.POLICY</param-name>
 <param-value>org.apache.myfaces.redirectTracker.NoopRedirectTrackPolicy</param-value>
 </context-param>
 <context-param>
 <param-name>org.apache.myfaces.redirectTracker.MAX_REDIRECTS</param-name>
 <param-value>20</param-value>
 </context-param>
 <context-param>
 <param-name>org.apache.myfaces.COMPRESS_STATE_IN_SESSION</param-name>
 <param-value>false</param-value>
 </context-param>
 <context-param>
 <param-name>org.apache.myfaces.SERIALIZE_STATE_IN_SESSION</param-name>
 <param-value>false</param-value>
 </context-param>
</web-app>I'm running jsf 1.1, tomcat v5.5.20, apache 2.059, JK 1.2.18
Thanks to anyone for insight.

Hello. Me again.
I did not post the JSP file that was using the above code, so I
decided to post it, and mention that if I use:
onchange="submit();"within the <h:selectOneMenu> tag, the form does not need to be
submitted twice, but takes the values and validates them.
On the other hand, if your form is long enough, and you have to scroll
down to change the drop-down box, the form is submitted, and
so it takes you to the top of the page again.
I guess that I could design the page so that the entire form fits
within the browser without scrolling, but that would depend on
how big the user makes their browser window.
Anyway, here is the JSP:
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<f:view>
<%
* MOCF ball tickets order form.
%>
<jsp:include page="./headerform.jsp">
 <jsp:param name="pagetitle" value="MOCF Ball Tickets Purchase Page" />
 <jsp:param name="page" value="tickets" />
</jsp:include>
<center>
<h:form>
<table border="2" cellspacing=1 cellpadding=2>
<tr>
 <td align=center>
 <h:outputText value="#{mocfBall.mocfyear}"/>
 <h:outputText value="#{mocfBall.mocftitle}"/> 
 
 <h:outputText value="#{mocfBall.mocfslogan}"/>
 
 <h:outputText value="#{mocfBall.mocflocation}"/> 
 <h:outputText value="#{mocfBall.mocfcity}"/> 
 <h:outputText value="#{mocfBall.mocfdate}"/> 
 </td>
</tr>
</table>
<table border="0" cellspacing=1 cellpadding=2 width="90%">
<tr>
 <td align=center>
 MOCF Ball Tickets PURCHASE FORM
 </td>
</tr>
<tr>
 <td align=center>
 Date/Time:
 <h:outputText value="#{mocfBall.currentdatetime}"/>
 </td>
</tr>

<tr>
 <td align=center>
 
 You may print this form and fill in the fields by hand,
 or 
 fill in the fields now by typing, then print the form with the
 PRINT button in the browser menu above, or the "Print Page"
 button below.
 
 For questions, please contact: 
 <h:outputText value="#{mocfBall.mocfcontactname}"/>
 at
 <h:outputText value="#{mocfBall.mocfcontactphone}"/>
 or by email at
 <h:outputText value="#{mocfBall.mocfcontactemail}"/>
 
 To use the postal service instead of online submission,
 please mail this form, with your check, to: 
 <h:outputText value="#{mocfBall.mocfsnailtitle}"/> 
 <h:outputText value="#{mocfBall.mocfsnailaddr1}"/> 
 <h:outputText value="#{mocfBall.mocfsnailaddr2}"/> 
 <h:outputText value="#{mocfBall.mocfsnailaddr3}"/> 
 
 </td>
</tr>
<tr>
 <td align=right>
 <a href=<h:outputText value="#{mocfBall.mocfhome}"/>>MOCF Ball Home</a>
 </td>
</tr>
</table>
<table width="90%" border="1" cellpadding="2" cellspacing="0">
<tr>
 <td width="100%" valign="top" colspan="2" align="center">
 (* = field required)
 </td>
</tr>
<tr>
 <td align="right" valign="top">
 *Salutation:
 </td>
 <td align="left" valign="top">
 <h:selectOneMenu id="formSalutations"
 valueChangeListener="#{ticketsformBean.mocfsalutationSelected}"
 value="${ticketsformBean.mocfsalutation}">
 <f:selectItems value="#{ticketsformBean.allsalutations}"/>
 </h:selectOneMenu>
 
 
 <h:outputText value="#{ticketsformBean.salutationerror}"/>
 
 </td>
</tr>
<tr>
 <td align="right" valign="top">
 *First name:
 </td>
 <td align="left" valign="top">
 <h:inputText value="#{ticketsformBean.mocffirstname}" size="40"/>
 
 
 <h:outputText value="#{ticketsformBean.firstnameerror}"/>
 
 </td>
</tr>
<tr>
 <td align="right" valign="top">
 *Last name:
 </td>
 <td align="left" valign="top">
 <h:inputText value="#{ticketsformBean.mocflastname}" size="40"/>
 
 
 <h:outputText value="#{ticketsformBean.lastnameerror}"/>
 
 </td>
</tr>
<tr>
 <td align="right" valign="top">
 *Address1:
 </td>
 <td align="left" valign="top">
 <h:inputText value="#{ticketsformBean.mocfaddress1}" size="40"/>
 
 
 <h:outputText value="#{ticketsformBean.address1error}"/>
 
 </td>
</tr>
<tr>
 <td align="right" valign="top">
 *Address2:
 </td>
 <td align="left" valign="top">
 <h:inputText value="#{ticketsformBean.mocfaddress2}" size="40"/>
 
 
 <h:outputText value="#{ticketsformBean.address2error}"/>
 
 </td>
</tr>
<tr>
 <td align="right" valign="top">
 *City:
 </td>
 <td align="left" valign="top">
 <h:inputText value="#{ticketsformBean.mocfcity}" size="30"/>
 
 
 <h:outputText value="#{ticketsformBean.cityerror}"/>
 
 </td>
</tr>
<tr>
 <td align="right" valign="top">
 *State:
 </td>
 <td align="left" valign="top">
 <h:selectOneMenu id="states"
 valueChangeListener="#{ticketsformBean.mocfstateSelected}"
 value="${ticketsformBean.mocfstate}">
 <f:selectItems value="#{ticketsformBean.allstates}"/>
 </h:selectOneMenu>
 
 
 <h:outputText value="#{ticketsformBean.stateerror}"/>
 
 </td>
</tr>
<tr>
 <td align="right" valign="top">
 *Zip:
 </td>
 <td align="left" valign="top">
 <h:inputText value="#{ticketsformBean.mocfzip}" size="10"/>
 
 
 <h:outputText value="#{ticketsformBean.ziperror}"/>
 
 </td>
</tr>
<tr>
 <td align="right" valign="top">
 *Phone:
 </td>
 <td align="left" valign="top">
 <h:inputText value="#{ticketsformBean.mocfphone}" size="10"/>
 
 
 <h:outputText value="#{ticketsformBean.phoneerror}"/>
 
 </td>
</tr>
<tr>
 <td align="right" valign="top">
 Fax:
 </td>
 <td align="left" valign="top">
 <h:inputText value="#{ticketsformBean.mocffax}" size="10"/>
 
 
 <h:outputText value="#{ticketsformBean.faxerror}"/>
 
 </td>
</tr>
<tr>
 <td align="right" valign="top">
 *Email:
 </td>
 <td align="left" valign="top">
 <h:inputText value="#{ticketsformBean.mocfemail}" size="60"/>
 
 
 <h:outputText value="#{ticketsformBean.emailerror}"/>
 
 </td>
</tr>
</table>
<table width="90%" border="1" cellpadding="2" cellspacing="0">
<tr>
 <td align="right" valign="top">
 *Number of tickets to reserve:
 </td>
 <td align="left" valign="top">
 <h:selectOneMenu id="ticketcount"
 valueChangeListener="#{ticketsformBean.mocfnbrofticketsSelected}"
 value="${ticketsformBean.mocfnbroftickets}">
 <f:selectItems value="#{ticketsformBean.allticketcounts}"/>
 </h:selectOneMenu>
 
 
 <h:outputText value="#{ticketsformBean.nbrticketserror}"/>
 
 </td>
</tr>
<tr>
 <td align="right" valign="top">
 *Name1:
 </td>
 <td align="left" valign="top">
 <h:inputText value="#{ticketsformBean.mocfname1}" size="30"/>
 
 
 <h:outputText value="#{ticketsformBean.name1error}"/>
 
 </td>
</tr>
<tr>
 <td align="right" valign="top">
 *Name2:
 </td>
 <td align="left" valign="top">
 <h:inputText value="#{ticketsformBean.mocfname2}" size="30"/>
 
 
 <h:outputText value="#{ticketsformBean.name2error}"/>
 
 </td>
</tr>
<tr>
 <td align="right" valign="top">
 *Name3:
 </td>
 <td align="left" valign="top">
 <h:inputText value="#{ticketsformBean.mocfname3}" size="30"/>
 
 
 <h:outputText value="#{ticketsformBean.name3error}"/>
 
 </td>
</tr>
<tr>
 <td align="right" valign="top">
 *Name4:
 </td>
 <td align="left" valign="top">
 <h:inputText value="#{ticketsformBean.mocfname4}" size="30"/>
 
 
 <h:outputText value="#{ticketsformBean.name4error}"/>
 
 </td>
</tr>
<tr>
 <td align="center" valign="top" colspan="2">
 <h:commandButton value="Submit tickets order"
 action="#{ticketsformBean.validate}"/>
 </td>
</tr>
</table>
</h:form>
 
<table border="0" cellspacing=1 cellpadding=2>
<tr>
 <td align=center>
 <input type="hidden" name="form" value="print">
 <INPUT TYPE="button" name="printMe" onClick="print()" value="Print Page">
 </td>
</tr>
</table>
</center>
<h:messages />
<jsp:include page="./footerform.jsp" />
</f:view>

Database call fired twice when using actionListener in dataTable

Hi all,
I have a question regarding the request bean lifecylce in the current use case (using Sun JSF 1.2)
I have a managed bean in request scope that contains an ArrayList which is used as the data provider in a dataTable on a faces page.
The bean contains an init() method to populate the ArrayList using a database call.
The dataTable also contains a column with a commandLink that calls a method via actionListener inside the managed bean to delete the current row.
When I click the link the action gets called and deletes the row from the database. I also reload the data from the database and assign it to my ArrayList.
However, the init Method is also called before the action is executed. So the database call is fired twice when hitting the link:
- First time in the init() method of the bean
- Second time in the actionListener method when reloading the data
I can not remove the call from the actionListener, because the data has not deleted yet.
Question:*
How can I make sure the database call is fired once only? (and also making sure the ArrayList is populated appropriate)
Maybe I am doing something wrong here? Thanks in advance for any help.
Maik
This is the request scope bean:
public class UserBean implements Serializable {
 private List all;
 private Long userId = null;
 @PostConstruct
 public void init() {
 if(all == null) {
 new ArrayList();
 loadUserList();
 * Constructor
 public UserBean() {
 super();
 * @return the userId
 public Long getUserId() {
 return userId;
 * @param userId
 * the userId to set
 public void setUserId(Long userId) {
 this.userId = userId;
 * @param all
 * the all to set
 public void setAll(List all) {
 this.all = all;
 public List getAll() throws GeneralModelException {
 return all;
 public void loadUserList() {
 EntityManager em = Contexts.getEntityManager();
 Query q = em.createNamedQuery("user.findAll");
 all = q.getResultList();
 public void deleteAction(ActionEvent ae) {
 EntityManager em = Contexts.getEntityManager();
 Query q = em.createNamedQuery("user.byId");
 q.setParameter("id", userId);
 try {
 User user = (User) q.getSingleResult();
 if (user != null) {
 em.remove(user);
 loadUserList();
 } catch (NoResultException e) {
 // TODO
}

No, I do not call the init() method.
Basically the init() is called before the deleteAction() so the ArrayList still contains the old value, unless a second database call is triggered after the entity has been deleted.
Maybe I am missing something here...
See also here (JSF 1.2 RI - Bean Instantiation and Annotation)
[http://weblogs.java.net/blog/jhook/archive/2007/05/jsf_12_ri_backi.html]
Here is the init() call stack trace
Daemon Thread [http-8080-2] (Suspended (breakpoint at line 32 in UserBean))
 UserBean.init() line: 32
 NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method]
 NativeMethodAccessorImpl.invoke(Object, Object[]) line: not available
 DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: not available
 Method.invoke(Object, Object...) line: not available
 DefaultAnnotationProcessor.postConstruct(Object) line: 79
 Tomcat6InjectionProvider.invokePostConstruct(Object) line: 118
 ManagedBeanBuilder(BeanBuilder).invokePostConstruct(Object, InjectionProvider) line: 223
 ManagedBeanBuilder(BeanBuilder).build(InjectionProvider, FacesContext) line: 108
 BeanManager.createAndPush(String, BeanBuilder, ELUtils$Scope, FacesContext) line: 368
 BeanManager.create(String, FacesContext) line: 230
 ManagedBeanELResolver.getValue(ELContext, Object, Object) line: 88
 FacesCompositeELResolver(CompositeELResolver).getValue(ELContext, Object, Object) line: 53
 FacesCompositeELResolver.getValue(ELContext, Object, Object) line: 72
 AstIdentifier.getValue(EvaluationContext) line: 61
 AstValue.getTarget(EvaluationContext) line: 59
 AstValue.setValue(EvaluationContext, Object) line: 129
 ValueExpressionImpl.setValue(ELContext, Object) line: 249
 JspValueExpression.setValue(ELContext, Object) line: 85
 RestoreViewPhase.doPerComponentActions(FacesContext, UIComponent) line: 240
 RestoreViewPhase.doPerComponentActions(FacesContext, UIComponent) line: 245
 RestoreViewPhase.doPerComponentActions(FacesContext, UIComponent) line: 245
 RestoreViewPhase.execute(FacesContext) line: 195
 RestoreViewPhase(Phase).doPhase(FacesContext, Lifecycle, ListIterator<PhaseListener>) line: 100
 RestoreViewPhase.doPhase(FacesContext, Lifecycle, ListIterator<PhaseListener>) line: 104
 LifecycleImpl.execute(FacesContext) line: 118
 FacesServlet.service(ServletRequest, ServletResponse) line: 265

Check for null and empty - Arraylist

Hello all,
Can anyone tell me the best procedure to check for null and empty for an arraylist in a jsp using JSTL. I'm trying something like this;
<c:if test="${!empty sampleList}">
</c:if>
Help is greatly appreciated.
Thanks,
Greeshma...

A null check might not be you best option. If your requirement is you must have both the date and time component supplied in order to populate EventDate, then I would use a Script Functoid that takes data and time as parameters.
In the C# method, first check if either is an empty string, if so return an empty string.
If not, TryParse the data, if successful, return a valid data string for EventDate. If not, error or return empty string, whichever satsifies the requirement.

How to populate table in RFC

How do I populate an abstractlist that is an input to an RFC? I read the post by Bertram Ganz, but my generated classes look different. I imported the RFC and the system generated the following:
-zbapi_appraisal_create
-zbapi_appraisal_create_input
 -appraisees (bapiappraisee)
 -bapiappraisee
 -fields...
 -output (zbapi_appraisal_create_output)
 -same as output node below
 -appraiser_id
 -rest of input parameters...
-zbapi_appraisal_create_output
...etc.
I have no problem setting the regular input parms, but how do I set the table? I tried the following, but I get a ClassCastException on the call to setAppraisees().
Zbapi_Appraisal_Create_Input input = new Zbapi_Appraisal_Create_Input();
wdContext.nodeZbapi_Appraisal_Create().bind(input);
input.setAppraisal_Model_Id(appraisalModelId);
input.setStart_Date(startDate);
input.setText(description);
input.setCreation_Date(appraisalDate);
input.setAppraiser_Id(appraiserId);
//static values
input.setPlan_Version("01");
input.setAnonymous(true);
input.setAppraiser_Type("P");
input.setAppraiser_Plan_Version("01");
//create appraisee
Bapiappraisee obj = new Bapiappraisee();
obj.setPlan_Version("01");
obj.setType("P");
obj.setId(appraiseeId);
obj.setName(appraiseeName);
List myList = input.getAppraisees();
if (myList == null) myList = new ArrayList();
myList.add(obj);
input.setAppraisees((AbstractList)myList);
wdContext.currentZbapi_Appraisal_CreateElement().modelObject().execute();
wdContext.nodeOutput().invalidate();
Any input is greatly appreciated!!
John

Please read a good manual prepared by Arun Bhat -
<a href="https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/f3f93ee7-0c01-0010-2593-d7c28b5377c2">Adaptive RFC Troubleshooting Guide</a>
WDDynamicRFCException most likely comes in the following cases:
a) JCo is not setup properly
b) Your function module does not exist in R/3 system referred by your JCo
c) Your function module is not RFC enabled
d) DD_DOMA_GET is not RFC enabled
Also make sure you have got your cardinality settings for your model node in context controller proper.
If you have used a template approach, just check your wdDoInit method of your custom/component controller for code similar to the following:
wdContext.nodeBAPI_Input().bind(new BAPI_Input());
If you have the above code and the code that you have just pasted , just comment this code and try executing your application again.
Regards,
Subramanian V.
Message was edited by: Subramanian Venkateswaran

How to populate values in to drop down by index

Hi in my application i have dropdownby index with label State.In that dropdown i need to populate all the states of our country like..Tamilnadu,andhraprdesh,Gujrath,Maharastra,Delhi....,and by default it should be populated with Select State ,can u please tell me the code..
Thanks
Kishore

hi,
1.in ur context create a context value node----eg: MyStates
2.under that value node create a value attribute--eg: values.
3.set the cardinality of "MyStates" value node to 0:n
4.texts property of ur dropdown by index ui element shld be bound to the value attr (values).
5.in the wdDoInit() method of ur view that has this dropdownbyindex ui element use the follwoing code,
String [ ] states_array = new String [ ] {"tn", "mp", "ap", "karnataka"};
List list_for_node_elem = new ArrayList();
 for (int i = 0; i <states_array.length; ++i)
 IPrivateMyView.IMyStatesElement elem = wdContext.createMyStatesElement();
 MyStatesElement.setValues(states_array [i ] );
 list_for_node_elem.add(MyStatesElement);
 wdContext.nodeMyStates().bind(list_fornode_elem);
 wdContext.nodeMyStates().setLeadSelection(1);
Regards
Jayapriya

ArrayList populates twice

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