Applying view criteria dynamically

Question

Hi,
its urgent...... please guide me....
in my application I want to execute the viewobject once using database than it should store in cache memory and after applying view criteria it should filter the data and give from the memory after clearing it it should return all the records from the cache memory no need to go database...
I have used the following code......
public void getViewdata()
               ApplicationModule am = Configuration.createRootApplicationModule("model.HRAppModule", "HRAppModuleLocal");
        ViewObject viewobject = am.findViewObject("employeesVo1");
        viewobject.executeQuery();
              System.out.println("no of records:\t" + viewobject.getRowCount());
        System.out.println("no of records:\t " + viewobject.getFetchedRowCount());
        System.out.println("no of records:\t" + viewobject.getEstimatedRowCount());
        System.out.println("Query Mode of viewobject:\t" + viewobject.getQueryMode());
        ViewCriteria Viewcriteria = null;
        Viewcriteria = viewobject.createViewCriteria();
        Viewcriteria.setCriteriaMode(Viewcriteria.CRITERIA_MODE_QUERY | Viewcriteria.CRITERIA_MODE_CACHE);
        System.out.println("Viewcriteria mode is:\t" + Viewcriteria.getCriteriaMode());
        viewobject.setQueryMode(viewobject.QUERY_MODE_SCAN_VIEW_ROWS);
        System.out.println("Query Mode of viewobject:\t" + viewobject.getQueryMode());
        Viewcriteria.setConjunction(Viewcriteria.VC_CONJ_AND);
        ViewCriteriaRow Viewcriteriarow = Viewcriteria.createViewCriteriaRow();
        ViewCriteriaRow Viewcriteriarow1 = Viewcriteria.createViewCriteriaRow();
        Viewcriteriarow.setAttribute("ManagerId", this.getMgr());
        Viewcriteriarow.setConjunction(Viewcriteriarow.VC_CONJ_AND);
        Viewcriteriarow1.setAttribute("Salary", this.getSal());
        Viewcriteriarow1.setConjunction(Viewcriteriarow.VC_CONJ_AND);
        Viewcriteria.add(Viewcriteriarow);
        Viewcriteria.add(Viewcriteriarow1);
        if (Viewcriteria.hasData())         {
            System.out.println("Query Mode of viewobject:\t" + viewobject.getQueryMode());
            viewobject.applyViewCriteria(Viewcriteria);
            viewobject.executeQuery();
            System.out.println("no of records after apply view criteria:\t" + viewobject.getRowCount());
            System.out.println("no of records after apply view criteria:\t" + viewobject.getFetchedRowCount());
            System.out.println("no of records after apply view criteria:\t" + viewobject.getEstimatedRowCount());
            System.out.println(" view criteria where clause:\t" + viewobject.getViewCriteria());
                       System.out.println("Viewcriteria mode is:\t" + Viewcriteria.getCriteriaMode());
            System.out.println("Query Mode of viewobject:\t" + viewobject.getQueryMode());
            System.out.println("Query :\t" + viewobject.getQuery());
        else
                      Viewcriteria.removeAllElements();
            viewobject.applyViewCriteria(Viewcriteria);
            System.out.println("Viewcriteria mode is:\t" + Viewcriteria.getCriteriaMode());
             System.out.println(" view criteria where clause:\t" + viewobject.getViewCriteria());
                       System.out.println("Query :\t" + viewobject.getQuery());
            viewobject.executeQuery();
            System.out.println("no of records after apply view criteria:\t" + viewobject.getRowCount());
            System.out.println("no of records after apply new view criteria:\t" + viewobject.getFetchedRowCount());
            System.out.println("no of records after applying new view criteria:\t" + viewobject.getEstimatedRowCount());
            System.out.println("Viewcriteria mode is:\t" + Viewcriteria.getCriteriaMode());
            System.out.println("Query Mode of viewobject:\t" + viewobject.getQueryMode());
        }Edited by: user13385388 on Jan 21, 2011 6:59 AM

Answer 1

Hi,
I'm not able to get that so I have put all the things u go through it tell me the solution please its urgent...... please guide me....
in my application I want to execute the viewobject once using database than it should store in cache memory and after applying view criteria it should filter the data and give from the memory after clearing it it should return all the records from the cache memory no need to go database...
I have used the following code......
backing bean code
public class Beanclass
    private String deptid;
    private String mgrid;
    private String sal;
    public void setDeptid(String deptid)
        this.deptid = deptid;
    public String getDeptid()
        return deptid;
    public void setSal(String sal)
        this.sal = sal;
    public String getSal()
        return sal;
    public String ROView_action()
        // Add event code here...
        FacesContext facesContext = FacesContext.getCurrentInstance();
        Application app = facesContext.getApplication();
        ExpressionFactory elFactory = app.getExpressionFactory();
        ELContext elContext = facesContext.getELContext();
        ValueExpression valueExp = elFactory.createValueExpression(elContext, "#{bindings}", Object.class);
        BindingContainer bindings = (BindingContainer) valueExp.getValue(elContext);
        DCIteratorBinding iter = (DCIteratorBinding) bindings.get("EmPdetails1Iterator"); //("employeesVo1Iterator");
        ViewObject viewobject = iter.getViewObject();
        System.out.println("no of records without applying view criteria value:\t" + viewobject.getRowCount());
        System.out.println("no of records without applying view criteria value:\t " + viewobject.getFetchedRowCount());
        System.out.println("no of records without applying view criteria value:\t" + viewobject.getEstimatedRowCount());
        System.out.println("Query Mode of viewobject before applying view criteria:\t" + viewobject.getQueryMode());
        ViewCriteria Viewcriteria = null;
        Viewcriteria = viewobject.createViewCriteria();
        Viewcriteria.setCriteriaMode(Viewcriteria.CRITERIA_MODE_CACHE);
        //Viewcriteria.setCriteriaMode(Viewcriteria.CRITERIA_MODE_QUERY | Viewcriteria.CRITERIA_MODE_CACHE);
        System.out.println("Viewcriteria mode is:\t" + Viewcriteria.getCriteriaMode());
        viewobject.setQueryMode(viewobject.QUERY_MODE_SCAN_VIEW_ROWS);
        System.out.println("Query Mode of viewobject:\t" + viewobject.getQueryMode());
        Viewcriteria.setConjunction(Viewcriteria.VC_CONJ_AND);
        ViewCriteriaRow Viewcriteriarow = Viewcriteria.createViewCriteriaRow();
        ViewCriteriaRow Viewcriteriarow1 = Viewcriteria.createViewCriteriaRow();
        ViewCriteriaRow Viewcriteriarow2 = Viewcriteria.createViewCriteriaRow();
        Viewcriteriarow.setAttribute("DepartmentId", this.getDeptid());
        Viewcriteriarow.setConjunction(Viewcriteriarow.VC_CONJ_AND);
        Viewcriteriarow1.setAttribute("ManagerId", this.getMgrid());
        Viewcriteriarow1.setConjunction(Viewcriteriarow.VC_CONJ_AND);
        Viewcriteriarow2.setAttribute("Salary", this.getSal());
        Viewcriteriarow2.setConjunction(Viewcriteriarow.VC_CONJ_AND);
        Viewcriteria.add(Viewcriteriarow);
        Viewcriteria.add(Viewcriteriarow1);
        Viewcriteria.add(Viewcriteriarow2);
        viewobject.applyViewCriteria(Viewcriteria);
        viewobject.executeQuery();
        System.out.println("no of records after applying view criteria value:\t" + viewobject.getRowCount());
        System.out.println("no of records after applying view criteria value:\t" + viewobject.getFetchedRowCount());
        System.out.println("no of records after applying view criteria value:\t" + viewobject.getEstimatedRowCount());
        System.out.println("Viewcriteria mode is:\t" + Viewcriteria.getCriteriaMode());
        System.out.println("Query Mode of viewobject:\t" + viewobject.getQueryMode());
        Viewcriteria.removeAllElements();
        viewobject.applyViewCriteria(Viewcriteria);
        //  viewobject.setQueryMode(viewobject.QUERY_MODE_SCAN_DATABASE_TABLES);
        viewobject.executeQuery();
        System.out.println("no of records after removing view criteria:\t" + viewobject.getRowCount());
        System.out.println("no of records after removing view criteria:\t" + viewobject.getFetchedRowCount());
        System.out.println("no of records after removing view criteria:\t" + viewobject.getEstimatedRowCount());
        System.out.println("Viewcriteria mode is:\t" + Viewcriteria.getCriteriaMode());
        System.out.println("Query Mode of viewobject:\t" + viewobject.getQueryMode());
        return null;
}Jspx code
<?xml version='1.0' encoding='UTF-8'?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="2.1"
          xmlns:f="http://java.sun.com/jsf/core"
          xmlns:h="http://java.sun.com/jsf/html"
          xmlns:af="http://xmlns.oracle.com/adf/faces/rich">
  <jsp:directive.page contentType="text/html;charset=UTF-8"/>
  <f:view>
    <af:document id="d1">
      <af:messages id="m1"/>
      <af:form id="f1">
        <af:pageTemplate viewId="/oracle/templates/threeColumnTemplate.jspx"
                         id="pt1">
          <f:facet name="center">
            <af:panelGroupLayout id="pgl2" layout="vertical"
                                 inlineStyle="width:1327px;">
              <af:table value="#{bindings.EmPdetails1.collectionModel}"
                        var="row" rows="#{bindings.EmPdetails1.rangeSize}"
                        emptyText="#{bindings.EmPdetails1.viewable ? 'No data to display.' : 'Access Denied.'}"
                        fetchSize="#{bindings.EmPdetails1.rangeSize}"
                        rowBandingInterval="0"
                        selectedRowKeys="#{bindings.EmPdetails1.collectionModel.selectedRow}"
                        selectionListener="#{bindings.EmPdetails1.collectionModel.makeCurrent}"
                        rowSelection="single" id="t1" partialTriggers="::cb1"
                        width="1290">
                <af:column sortProperty="DepartmentId" sortable="true"
                           headerText="#{bindings.EmPdetails1.hints.DepartmentId.label}"
                           id="c5">
                  <af:outputText value="#{row.DepartmentId}" id="ot11">
                    <af:convertNumber groupingUsed="false"
                                      pattern="#{bindings.EmPdetails1.hints.DepartmentId.format}"/>
                  </af:outputText>
                </af:column>
                <af:column sortProperty="DepartmentName" sortable="true"
                           headerText="#{bindings.EmPdetails1.hints.DepartmentName.label}"
                           id="c10">
                  <af:outputText value="#{row.DepartmentName}" id="ot3"/>
                </af:column>
                <af:column sortProperty="EmployeeId" sortable="true"
                           headerText="#{bindings.EmPdetails1.hints.EmployeeId.label}"
                           id="c1">
                  <af:outputText value="#{row.EmployeeId}" id="ot9">
                    <af:convertNumber groupingUsed="false"
                                      pattern="#{bindings.EmPdetails1.hints.EmployeeId.format}"/>
                  </af:outputText>
                </af:column>
                <af:column sortProperty="FirstName" sortable="true"
                           headerText="#{bindings.EmPdetails1.hints.FirstName.label}"
                           id="c9">
                  <af:outputText value="#{row.FirstName}" id="ot2"/>
                </af:column>
                <af:column sortProperty="LastName" sortable="true"
                           headerText="#{bindings.EmPdetails1.hints.LastName.label}"
                           id="c3">
                  <af:outputText value="#{row.LastName}" id="ot12"/>
                </af:column>
                <af:column sortProperty="Email" sortable="true"
                           headerText="#{bindings.EmPdetails1.hints.Email.label}"
                           id="c11">
                  <af:outputText value="#{row.Email}" id="ot10"/>
                </af:column>
                <af:column sortProperty="PhoneNumber" sortable="true"
                           headerText="#{bindings.EmPdetails1.hints.PhoneNumber.label}"
                           id="c6">
                  <af:outputText value="#{row.PhoneNumber}" id="ot7"/>
                </af:column>
                <af:column sortProperty="HireDate" sortable="true"
                           headerText="#{bindings.EmPdetails1.hints.HireDate.label}"
                           id="c7">
                  <af:outputText value="#{row.HireDate}" id="ot1">
                    <af:convertDateTime pattern="#{bindings.EmPdetails1.hints.HireDate.format}"/>
                  </af:outputText>
                </af:column>
                <af:column sortProperty="JobId" sortable="true"
                           headerText="#{bindings.EmPdetails1.hints.JobId.label}"
                           id="c4">
                  <af:outputText value="#{row.JobId}" id="ot5"/>
                </af:column>
                <af:column sortProperty="Salary" sortable="true"
                           headerText="#{bindings.EmPdetails1.hints.Salary.label}"
                           id="c12">
                  <af:outputText value="#{row.Salary}" id="ot8">
                    <af:convertNumber groupingUsed="false"
                                      pattern="#{bindings.EmPdetails1.hints.Salary.format}"/>
                  </af:outputText>
                </af:column>
                <af:column sortProperty="CommissionPct" sortable="true"
                           headerText="#{bindings.EmPdetails1.hints.CommissionPct.label}"
                           id="c2">
                  <af:outputText value="#{row.CommissionPct}" id="ot6">
                    <af:convertNumber groupingUsed="false"
                                      pattern="#{bindings.EmPdetails1.hints.CommissionPct.format}"/>
                  </af:outputText>
                </af:column>
                <af:column sortProperty="ManagerId" sortable="true"
                           headerText="#{bindings.EmPdetails1.hints.ManagerId.label}"
                           id="c8">
                  <af:outputText value="#{row.ManagerId}" id="ot4">
                    <af:convertNumber groupingUsed="false"
                                      pattern="#{bindings.EmPdetails1.hints.ManagerId.format}"/>
                  </af:outputText>
                </af:column>
              </af:table>
            </af:panelGroupLayout>
          </f:facet>
          <f:facet name="header"/>
          <f:facet name="start">
            <af:panelGroupLayout id="pgl1" layout="vertical">
              <af:inputText label="Department Id" id="it1"
                            value="#{Viewcriteriabackingbean.deptid}"/>
              <af:inputText label="Salary" id="it2"
                            value="#{Viewcriteriabackingbean.sal}"/>
              <af:commandButton text="ApplyviewcriteriaUsingIteratorBindingforROView" id="cb1"
                                partialTriggers="t1"
                                action="#{Viewcriteriabackingbean.ROView_action}"/>
            </af:panelGroupLayout>
          </f:facet>
          <f:facet name="branding"/>
          <f:facet name="copyright"/>
          <f:facet name="status"/>
          <f:attribute name="startColumnSize" value="200"/>
        </af:pageTemplate>
      </af:form>
    </af:document>
  </f:view>
  <!--oracle-jdev-comment:preferred-managed-bean-name:Viewcriteriabackingbean-->
</jsp:root>output:
its returning the filtered records based on deptid and sal after removing view criteria its not returning the all the records its returns filtered records only.
Edited by: user13385388 on Jan 25, 2011 1:58 AM