8 Replies Latest reply on May 8, 2009 3:28 AM by rubenrjorge

Using subTable to display data from Vector<Vector>

rubenrjorge May 7, 2009 4:05 AM

Hello everyone,

I'm new to JSF and RichFaces and I'm trying to create a table (rich:dataTable) from data structures in my backing bean. I've already managed to create the headers using rich:columnGroup and now I want to display the actual data using rich:subTable.

My subTable is defined as follows:

<rich:subTable value="#{TaskListBean.main}" var="data">
 <!-- first 3 values -->
 <rich:columns value="#{data.rowList}" var="singleCellData">
 <h:outputText value="#{singleCellData.headerName}" />
 </rich:columns>
 </rich:subTable>

I have 3 Java files, TaskListBean is the backing bean:

public class TaskListBean {

 private Vector<RowData> main;

 public Vector<RowData> getMain() {
 main = new Vector<RowData>();

 RowData data1 = new RowData();

 main.add(data1);
 main.add(data1);
 main.add(data1);
 main.add(data1);

 return main;
 }
}

RowData is:

public class RowData {
 private Vector<HeadersData> rowList;

 public RowData() {
 this.rowList = new Vector<HeadersData>();

 HeadersData data3 = new HeadersData();
 data3.setHeaderName("Data s1");

 HeadersData data4 = new HeadersData();
 data4.setHeaderName("Data s2");

 HeadersData data5 = new HeadersData();
 data5.setHeaderName("Data s3");

 this.rowList.add(data3);
 this.rowList.add(data4);
 this.rowList.add(data5);
 this.rowList.add(data3);
 this.rowList.add(data4);
 this.rowList.add(data5);
 }

 public Vector<HeadersData> getRowList() {
 return rowList;
 }
}

And finally HeadersData which has the property I want to display in each of the table cells:

public class HeadersData {
 private String headerName;

 public String getHeaderName() {
 return headerName;
}

If I try to run my JSP file I get the following error:

Error 500--Internal Server Error

javax.servlet.jsp.JspTagException: FOREACH_BAD_ITEMS
 at org.richfaces.iterator.SimpleForEachIterator.toForEachIterator(SimpleForEachIterator.java:135)
 at org.richfaces.iterator.SimpleForEachIterator.supportedTypeForEachIterator(SimpleForEachIterator.java:98)
 at org.richfaces.taglib.ColumnsTag.prepare(ColumnsTag.java:539)
 at org.richfaces.taglib.ColumnsTag.doStartTag(ColumnsTag.java:299)
 at jsp_servlet.__table3._jsp__tag33(__table3.java:1731)
 at jsp_servlet.__table3._jsp__tag32(__table3.java:1691)
 at jsp_servlet.__table3._jsp__tag22(__table3.java:1220)
 at jsp_servlet.__table3._jsp__tag21(__table3.java:1161)
 at jsp_servlet.__table3._jspService(__table3.java:350)
 at weblogic.servlet.jsp.JspBase.service(JspBase.java:34)
 at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
 at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
 at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
 at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
 at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:502)
 at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:251)
 at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:415)
 at com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:475)
 at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:143)
 at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:100)
 at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:176)
 at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110)
 at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
 at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
 at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
 at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
 at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
 at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
 at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
 at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
 at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
 at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:368)
 at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:495)
 at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
 at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
 at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
 at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3496)
 at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
 at weblogic.security.service.SecurityManager.runAs(Unknown Source)
 at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2180)
 at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2086)
 at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1406)
 at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
 at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)

Any ideas on why this is happening or any workarounds to display the information?

Thanks in advance,
~Ruben

1. Re: Using subTable to display data from Vector<Vector>

ilya_shaikovsky May 7, 2009 5:08 AM (in response to rubenrjorge)

priovide full page code. which RF version used?
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2. Re: Using subTable to display data from Vector<Vector>

rubenrjorge May 7, 2009 5:38 AM (in response to rubenrjorge)

Thank you for your reply ilya_shaikovsky.

I'm using RichFaces 3.3.1.CR1

The full page code is:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<%@ page contentType="text/html;charset=windows-1252"%>
<%@ taglib uri="http://richfaces.org/a4j" prefix="a4j"%>
<%@ taglib uri="http://richfaces.org/rich" prefix="rich"%>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<f:view>
 <html>
 <head>
 <meta http-equiv="Content-Type"
 content="text/html; charset=windows-1252"/>
 <title>table3</title>
 </head>
 <body>

 <h:form>

 <rich:dataTable id="taskList2" width="400" rendered="true" value="#{0}">
 <f:facet name="header">
 <rich:columnGroup>
 <!-- first line of headers -->
 <rich:columns value="#{TaskListBean.headerList}" var="columns" index="ind" colspan="2">
 <h:outputText value="#{columns.headerName}" />
 </rich:columns>
 <!-- second line of headers -->
 <rich:column breakBefore="true" rendered="false">
 </rich:column>
 <rich:columns value="#{TaskListBean.headerList}" var="columns2" index="ind">
 <h:outputText value="#{columns2.headerName}" />
 </rich:columns>
 <rich:columns value="#{TaskListBean.headerList}" var="columns2" index="ind">
 <h:outputText value="#{columns2.headerName}" />
 </rich:columns>
 </rich:columnGroup>
 </f:facet>
 <!-- table data/body -->
 <rich:subTable value="#{TaskListBean.main}" var="data">
 <rich:columns value="#{data.rowList}" var="singleCellData">
 <h:outputText value="#{singleCellData.headerName}" />
 </rich:columns>
 </rich:subTable>
 </rich:dataTable>
 </h:form>

 </body>
 </html>
</f:view>

The headers are working fine if I omit the subTable component. What I need is a way to represent a Java Vector<Vector> inside this subTable. I don't know if there is an easier way to do this.

3. Re: Using subTable to display data from Vector<Vector>

rubenrjorge May 7, 2009 5:39 AM (in response to rubenrjorge)
Typo: I meant
Vector<Vector<String>>
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4. Re: Using subTable to display data from Vector<Vector>

nbelaevski May 7, 2009 6:35 AM (in response to rubenrjorge)

Hello,

That's not the valid case. rich:columns cannot be created basing on render-time variables (e.g. "data" declared in rich:subTable). You should use some static collection for this case.
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5. Re: Using subTable to display data from Vector<Vector>

rubenrjorge May 7, 2009 7:11 AM (in response to rubenrjorge)

Thank you for your reply nbelaevski.

I made a simple example where I use the contents of a Vector inside the rich:columns element:

JSF (subTable only):

<rich:subTable value="#{0}" var="data">
 <rich:columns value="#{DataBean.main}" var="singleCellData">
 <h:outputText value="#{singleCellData}" />
 </rich:columns>
</rich:subTable>

My backing bean is:

public class DataBean {
 private Vector<String> main;

 public Vector<String> getMain() {
 main = new Vector<String>();

 main.add("data1");
 main.add("data2");
 main.add("data3");

 return main;
 }
}

The table renders as expected, 1 line with 3 columns.

What I need is to do the same, but for a dynamic number of lines, meaning I want to create one table line for each vector.

The backing bean would be this:

public class MatrixBean {
 private Vector<Vector<String>> main;

 public Vector<Vector<String>> getMain() {
 main = new Vector<Vector<String>>();

 Vector<String> aux1 = new Vector<String>();
 aux1.add("data1");
 aux1.add("data2");
 aux1.add("data3");

 Vector<String> aux2 = new Vector<String>();
 aux2.add("dataA");
 aux2.add("dataB");
 aux2.add("dataC");

 return main;
 }
}

But I don't know how to associate this structure with rich:subTable and rich:columns. Can you help me please?

6. Re: Using subTable to display data from Vector<Vector>

ilya_shaikovsky May 7, 2009 7:27 AM (in response to rubenrjorge)

1) at first I still can't realize why you need subtable at all.
2) explore please our sample carefully for columns component.
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7. Re: Using subTable to display data from Vector<Vector>

rubenrjorge May 7, 2009 9:17 AM (in response to rubenrjorge)

I noticed I don't need subTable, thank you.

I still can't get the datatable to display the values though.

My datatable is defined as:

<rich:dataTable id="taskList2" width="400" rendered="true" value="#{MatrixBean.main}" var="mainData">
 <f:facet name="header">
 <rich:columnGroup>
 <!-- first line of headers -->
 <rich:columns value="#{TaskListBean.headerList}" var="columns" index="ind" colspan="2">
 <h:outputText value="#{columns.headerName}" />
 </rich:columns>
 <!-- second line of headers -->
 <rich:column breakBefore="true" rendered="false">
 </rich:column>
 <rich:columns value="#{TaskListBean.headerList}" var="columns2" index="ind">
 <h:outputText value="#{columns2.headerName}" />
 </rich:columns>
 <rich:columns value="#{TaskListBean.headerList}" var="columns2" index="ind">
 <h:outputText value="#{columns2.headerName}" />
 </rich:columns>
 </rich:columnGroup>
 </f:facet>

 <!-- table data/body -->
 <rich:columns value="#{TaskListBean.headerList}" var="singleCellData" index="ind">
 <h:outputText value="#{mainData[ind]}" />
 </rich:columns>

 </rich:dataTable>

The headers render fine (#{TaskListBean.headerList}).

The actual data for the table is inside another backing bean (MatrixBean). This bean is described in my post above. Do you know how I can display those values in the table cells?

Thank you very much for your time.

8. Re: Using subTable to display data from Vector<Vector>

rubenrjorge May 8, 2009 3:28 AM (in response to rubenrjorge)

If anyone needs to display values from a Vector of Vectors structure, check this:

http://www.jboss.org/index.html?module=bb&op=viewtopic&t=155117
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