Do you need more information?, nobody pass for this issue? Any help is welcome
On 7/2/07, daniel ccss <[EMAIL PROTECTED]> wrote:
Anyone?? On 7/2/07, daniel ccss <[EMAIL PROTECTED]> 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!!! >
