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From "daniel ccss" <danielcc...@gmail.com>
Subject Re: Tomahawk + WorkingWithLargeTables
Date Mon, 02 Jul 2007 23:41:10 GMT
Do you need more information?, nobody pass for this issue? Any help is
welcome

On 7/2/07, daniel ccss <danielccss2@gmail.com> wrote:
>
> Anyone??
>
> On 7/2/07, daniel ccss <danielccss2@gmail.com> wrote:
> >
> > Hi all, I'm new in this mailing list, and I new using My Faces, hope you
> > can help me.
> >
> > Things to know: i'm using JDeveloper 10.1.3.1, last My Faces, last
> > Tomahawk implementation version
> >
> > I made the following things:
> > 1-The datascroller example (http://www.irian.at/myfaces/ dataScroller.jsf)
> > and all works fine.
> > 2- Then I read and implemented the article in the wiki call: WorkingWithLargeTables
> > ( http://wiki.apache.org/myfaces/WorkingWithLargeTables ) and all works
> > fine, the number of links, the method who brings each DataPage, the data
> > that is displaying in each page, all fine.
> >
> > But I noticed that when I put a System.out.println in the method that
> > brings the DataPage, the method that bring the DataPage from the database is
> > invoked several times, for example the System.outs that appear in my
> > console when I: load the page, click in page2 link, and click in page3 are:
> >
> > ... LINENUM BETWEEN 0 AND 2
> > ... LINENUM BETWEEN 0 AND 2
> > ... LINENUM BETWEEN 0 AND 2
> > ... LINENUM BETWEEN 0 AND 2
> > ... LINENUM BETWEEN 2 AND 4
> > ... LINENUM BETWEEN 2 AND 4
> > ... LINENUM BETWEEN 2 AND 4
> > ... LINENUM BETWEEN 5 AND 7
> >
> > Why this happen? I put a breakpoint in the fetchPage(int startRow, int
> > pageSize) method, and in fact it is call several times for each DataPage
> > that is show.
> >
> > The DataPage<T> class and the PagedListDataModel<T> class are the same
> > that appears in the WorkingWithLargeTables article from wiki.
> >
> > This is the code of my bean class:
> >
> > public class PacienteBean {
> >
> >     DataModel dataModel = null;
> >     private DataPage<Paciente> getDataPage(int inicio, int regPorPagina)
> > {
> >         PacienteEJB paciente = null;
> >         try {
> >             final Context context = new InitialContext();
> >             paciente = (PacienteEJB)context.lookup("PacienteEJB");
> >         } catch (NamingException e) {
> >             System.out.println(e.getMessage());
> >         }
> >         return paciente.obtenerPacientes (inicio, regPorPagina);
> >     }
> >
> >     public DataModel getDataModel() {
> >         if (dataModel == null) {
> >             dataModel = new LocalDataModel(2);
> >         }
> >         return dataModel;
> >     }
> >
> >     private class LocalDataModel extends PagedListDataModel {
> >         public LocalDataModel(int pageSize) {
> >             super(pageSize);
> >         }
> >
> >         public DataPage<Paciente> fetchPage(int startRow, int pageSize)
> > {
> >             return getDataPage(startRow, pageSize);
> >         }
> >     }
> >     public String mostrarPacientes() {
> >         return "success";
> >     }
> > }
> >
> > The only clue that I have is that something is happening in the jsp,
> > beacause the wiki article don´t explains how the jsp have to be, in fact I
> > leave it the same as the datascroller example jsp, only changing the value
> > of the DataTable value="#{PacienteBean.dataModel}" and putting the
> > preserveDataModel="false" because I want that for each page the DataPage
> > be loaded from the DataBase. This is my jsp:
> >
> > <%@ page contentType="text/html;charset=windows-1252"%>
> > <%@ taglib uri=" http://java.sun.com/jsf/html" prefix="h"%>
> > <%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
> > <%@ taglib uri=" http://myfaces.apache.org/tomahawk " prefix="t"%>
> > <f:view>
> >     <html>
> >         <head>
> >             <meta http-equiv="Content-Type"
> >                   content="text/html; charset=windows-1252"/>
> >             <title>listaPacientes</title>
> >         </head>
> >         <body><h:form>
> >                 <h:panelGroup id="body">
> >                     <t:dataTable id="data" styleClass="scrollerTable"
> >                                  headerClass="standardTable_Header"
> >                                  footerClass="standardTable_Header"
> >
> > rowClasses="standardTable_Row1,standardTable_Row2"
> >
> > columnClasses="standardTable_Column,standardTable_ColumnCentered,standardTable_Column"
> >                                  var="tablaPacientes"
> >                                  value="#{ PacienteBean.dataModel}"
> >                                  preserveDataModel="false" rows="2">
> >                         <h:column>
> >                             <f:facet name="header"></f:facet>
> >                             <h:outputText value="#{
> > tablaPacientes.numIdent}"/>
> >                         </h:column>
> >                         <h:column>
> >                             <f:facet name="header"></f:facet>
> >                             <h:outputText value="#{tablaPacientes.nombre
> > }"/>
> >                         </h:column>
> >                     </t:dataTable>
> >                     <h:panelGrid columns="1" styleClass="scrollerTable2"
> >
> >
> > columnClasses="standardTable_ColumnCentered">
> >                         <t:dataScroller id="scroll_1" for="data"
> > fastStep="10"
> >                                         pageCountVar="pageCount"
> >                                         pageIndexVar="pageIndex"
> >                                         styleClass="scroller"
> > paginator="true"
> >                                         paginatorMaxPages="9"
> >                                         paginatorTableClass="paginator"
> >
> > paginatorActiveColumnStyle="font-weight:bold;"
> >                                         immediate="true">
> >                             <f:facet name="first">
> >                                 <t:graphicImage url="images/arrow-
> > first.gif"
> >                                                 border="1"/>
> >                             </f:facet>
> >                             <f:facet name="last">
> >                                 <t:graphicImage url="images/arrow-
> > last.gif"
> >                                                 border="1"/>
> >                             </f:facet>
> >                             <f:facet name="previous">
> >                                 <t:graphicImage url="images/arrow-
> > previous.gif"
> >                                                 border="1"/>
> >                             </f:facet>
> >                             <f:facet name="next">
> >                                 <t:graphicImage url="images/arrow-
> > next.gif"
> >                                                 border="1"/>
> >                             </f:facet>
> >                             <f:facet name="fastforward">
> >                                 <t:graphicImage url="images/arrow-
> > ff.gif"
> >                                                 border="1"/>
> >                             </f:facet>
> >                             <f:facet name="fastrewind">
> >                                 <t:graphicImage url="images/arrow-
> > fr.gif"
> >                                                 border="1"/>
> >                             </f:facet>
> >                         </t:dataScroller>
> >                         <t:dataScroller id="scroll_2" for="data"
> >                                         rowsCountVar="rowsCount"
> >
> > displayedRowsCountVar="displayedRowsCountVar"
> >                                         firstRowIndexVar="firstRowIndex"
> >
> >                                         lastRowIndexVar="lastRowIndex"
> >                                         pageCountVar="pageCount"
> >                                         immediate="true"
> >                                         pageIndexVar="pageIndex">
> >                             <h:outputFormat
> > value="#{example_messages[\'dataScroller_pages\']}"
> >                                             styleClass="standard">
> >                                 <f:param value="#{rowsCount}"/>
> >                                 <f:param
> > value="#{displayedRowsCountVar}"/>
> >                                 <f:param value="#{firstRowIndex}"/>
> >                                 <f:param value="#{lastRowIndex}"/>
> >                                 <f:param value="#{pageIndex}"/>
> >                                 <f:param value="#{pageCount}"/>
> >                             </h:outputFormat>
> >                         </t:dataScroller>
> >                     </h:panelGrid>
> >                 </h:panelGroup>
> >                 <t:commandLink value="test" immediate="true"/>
> >             </h:form></body>
> >     </html>
> > </f:view>
> > Please help me with this, we are actually deciding which implementation
> > of myfaces to use, and I really trust in apache work, I don´t want that
> > other implementation be choose for our applications, thanks!!!
> >
>
>

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