Delete a Row from a Nested Data Table

Hi... Good day...
I have a dataTable nested within another DataTable.
I want to delete a Row from the nested DataTable on clicking a remove Button at the Last column of the Nested DataTable, Jus in the browser.
How to accomplish this using JavaScript?
Here is my Code Snippet..
<h:dataTable value="#{myListBean.rpts}" binding="#{myListBean.parent}" var="item" headerClass ="header" rowClasses = "whiteRow,grayRow" cellspacing="0" cellpadding="4" border = "0"  id = "dataTable">
<h:column>
     <h:graphicImage id="expand" value="static/images/plus.gif" onclick="showNested(this);" rendered="#{item.schedImgurl=='static/images/scheduled.gif'}"/>
      <div id="#{item.rptId}">
      <h:dataTable id="orderLines" binding="#{myListBean.child}"  value="#{item.scheduleList}" var="schedItem" style="display: none;">
      <h:column>
       <h:outputText value="#{schedItem.scheduleID}" style="display:none;" />
         <f:facet name="header" >
               <h:outputText value="Scheduled Criteria"/>
          </f:facet>
         <h:outputText value="#{schedItem.scheduleCriteriaName}" />
         <span onMouseOver="JavaScript:showScheduleTooltip(event,'#{schedItem.toolTipCriteraia}')" onMouseOut="JavaScript:hideTooltip()">...</span>
      </h:column>
        <h:column>
       <f:facet name="header" >
      <h:outputText value="Frequency"/>
      </f:facet>
       <h:outputText value="#{schedItem.scheduleFrequency}" />
      </h:column>
      <h:column>
       <f:facet name="header" >
       <h:outputText value="On"/>
       </f:facet>
       <h:outputText value="#{schedItem.scheduleStartDate}" />
      </h:column>
      <h:column>
        <input type="button" value="Remove"onclick=" Remove();"/>
      </h:column>
</h:dataTable>
</div>
</h:column>
</h:dataTable>Whatz that I need to do inside the Remove() JavaScript Function ?

Ram_J2EE_JSF wrote:
How to accomplish this using JavaScript?Using Javascript? Well, you know, Javascript runs at the client side and intercepts on the HTML DOM tree only. The JSF code is completely irrelevant. Open your JSF page in your favourite webbrowser and view the generated HTML source. Finally just base your Javascript function on it.

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    Message was edited by:
    deadseasquirrels

    It gives me a run-time error Well then your question should be "why do I get this run-time error" and then you would quote the error. Be more descriptive. "It doesn't work" is not descriptive.
    table.getModel().removeRow(selectedRow);I don't use JDK1.5 either. But if you are saying that the above line compiles cleanly with JDK1.5 (because of the auto-boxing feature, or whatever its called), then I see no reason why the code wouldn't work since it recognizes the class as a DefaultTableModel.
    Presumably you commented out the other line so you don't try to delete the row twice. Otherwise you might be getting a indexing error.

  • Deleting a row from a Parent VO gives NullPointerException

    I am using JDev 11.1.1.2.0
    Deleting a row from a Parent VO gives NullPointerException raised from oracle.jbo.server.EntityImpl.vetoRemoveWithDetails(EntityImpl.java:8214)
    Here is my implementation:
    There are two Entity Objects(Named "Parent" and "Child").
    Both EO are NOT based on a database table. (These are populated from a method in the AM, the method calls a database API that returns an nested array and this array is used to populate the Parent and Child entities)
    All attributes in these entity objects are Non-persistent.
    The View Object "ParentEv" is based on "Parent" EO
    The View Object "ChildEv" is based on "Child" EO
    The View Objects "ParentEv" and "ChildEv" are linked by a view link.
    The Entities "Parent" and"Child" are linked by Entity Association ( as "Composition Association" with "Implement Cascade Delete" checked.)
    I am programatically deleting and populating the View Objects ParentEv and ChildEv from a method in the AM.
    The first time I execute the method in BC Tester, it works fine.
    The second time I execute the method it works fine.
    But on third execution, it gives the below error which seems to be NullPointerException raised from oracle.jbo.server.EntityImpl.vetoRemoveWithDetails(EntityImpl.java:8214)
    I am able to reproduce this in a test case scenario. It always works the first 2 times and fails when the method to delete and populate the VOs is executed a 3rd time.
    If we base the "Parent" and "Child" entities on some dummy database views, it works fine, the problem only occurs when the Entities are NOT based on any table.
    Can someone advise on what could be causing this issue?
    Thanks,
    Mitesh.

    Here's the method that I use in my test case to populate the VOs.
       * This method populates the VOs ParentEv and ChildEv.
       * These VOs are based on EOs Paren and Child, respectively.
       * Before populating the VOs I am deleting any existing rows.
       * The first two times this method is executed, it works fine.
       * The third time this method executes it gives a nullpointerexception raised from
       * oracle.jbo.server.EntityImpl.vetoRemoveWithDetails(EntityImpl.java:8214)
      public void populateMethod(){
        int rowCount = getParentEv().getRowCount();   
        for (int i = 0; i < rowCount; i++) {
             Row row = getParentEv().last();
             if(row!=null)
               row.remove();
        rowCount = getChildEv().getRowCount();
        for (int i = 0; i < rowCount; i++) {
         Row row = getChildEv().last();
         if(row!=null)
           row.remove();
        int k = 0;
        for (int i = 1; i < 5; i++) {   
          ParentEvRowImpl parentEvRow = (ParentEvRowImpl)getParentEv().createRow();
          parentEvRow.setParentPk("Parent " + i);
          parentEvRow.setParentDesc("Parent Desc " + i);
          getParentEv().insertRow(parentEvRow);   
          for (int j = 1; j < 5; j++) {   
         k++;
         ChildEvRowImpl childEvRow = (ChildEvRowImpl)getChildEv().createRow();
         childEvRow.setChildPk("Child " + k);
         childEvRow.setChildDesc("Child Desc " + k);
         getChildEv().insertRow(childEvRow);   
      }==============================================================================
    Here is the Parent.xml for the Parent EO:
    <?xml version="1.0" encoding="UTF-8" ?>
    <!DOCTYPE Entity SYSTEM "jbo_03_01.dtd">
    <!---->
    <Entity
      xmlns="http://xmlns.oracle.com/bc4j"
      Name="Parent"
      Version="11.1.1.55.36"
      AliasName="Parent"
      BindingStyle="OracleName"
      UseGlueCode="false"
      RowClass="oracle.jbo.server.EntityImpl"
      DefClass="oracle.jbo.server.EntityDefImpl"
      CollClass="oracle.jbo.server.EntityCache">
      <DesignTime>
        <AttrArray Name="_publishEvents"/>
      </DesignTime>
      <Attribute
        Name="ParentPk"
        IsQueriable="false"
        IsPersistent="false"
        ColumnName="PARENTPK"
        SQLType="VARCHAR"
        Type="java.lang.String"
        ColumnType="$none$"
        PrimaryKey="true"/>
      <Attribute
        Name="ParentDesc"
        IsQueriable="false"
        IsPersistent="false"
        ColumnName="$none$"
        SQLType="VARCHAR"
        Type="java.lang.String"
        ColumnType="$none$"/>
      <AccessorAttribute
        Name="Child"
        Association="model.eo.ea.ChildParentAssoc"
        AssociationEnd="model.eo.ea.ChildParentAssoc.Child"
        AssociationOtherEnd="model.eo.ea.ChildParentAssoc.Parent"
        Type="oracle.jbo.RowIterator"
        IsUpdateable="false"/>
    </Entity>==============================================================================
    Here is the Child.xml for the Child EO:
    <?xml version="1.0" encoding="UTF-8" ?>
    <!DOCTYPE Entity SYSTEM "jbo_03_01.dtd">
    <!---->
    <Entity
      xmlns="http://xmlns.oracle.com/bc4j"
      Name="Child"
      Version="11.1.1.55.36"
      AliasName="Child"
      BindingStyle="OracleName"
      UseGlueCode="false">
      <DesignTime>
        <AttrArray Name="_publishEvents"/>
      </DesignTime>
      <Attribute
        Name="ChildPk"
        IsUpdateable="while_insert"
        IsQueriable="false"
        IsPersistent="false"
        IsNotNull="true"
        ColumnName="CHILDPK"
        SQLType="VARCHAR"
        Type="java.lang.String"
        ColumnType="$none$"
        PrimaryKey="true"/>
      <Attribute
        Name="ChildDesc"
        IsQueriable="false"
        IsPersistent="false"
        ColumnName="$none$"
        SQLType="VARCHAR"
        Type="java.lang.String"
        ColumnType="$none$"/>
      <Attribute
        Name="ParentPk"
        IsQueriable="false"
        IsPersistent="false"
        IsNotNull="true"
        ColumnName="$none$"
        SQLType="VARCHAR"
        Type="java.lang.String"
        ColumnType="$none$"/>
    </Entity>==============================================================================
    Here is the ChildParentAssoc.xml for the Association between Parent and Child EOs:
    <?xml version="1.0" encoding="UTF-8" ?>
    <!DOCTYPE Association SYSTEM "jbo_03_01.dtd">
    <!---->
    <Association
      xmlns="http://xmlns.oracle.com/bc4j"
      Name="ChildParentAssoc"
      Version="11.1.1.55.36">
      <DesignTime>
        <Attr Name="_isCodegen" Value="true"/>
      </DesignTime>
      <AssociationEnd
        Name="Parent"
        Cardinality="1"
        Source="true"
        Owner="model.eo.Parent"
        DeleteContainee="true"
        LockLevel="NONE"
        ExposedAccessor="false">
        <DesignTime>
          <Attr Name="_aggregation" Value="0"/>
          <Attr Name="_finderName" Value="Parent"/>
          <Attr Name="_isUpdateable" Value="true"/>
          <Attr Name="_minCardinality" Value="1"/>
        </DesignTime>
        <AttrArray Name="Attributes">
          <Item Value="model.eo.Parent.ParentPk"/>
        </AttrArray>
      </AssociationEnd>
      <AssociationEnd
        Name="Child"
        Cardinality="-1"
        Owner="model.eo.Child"
        HasOwner="true">
        <DesignTime>
          <Attr Name="_aggregation" Value="0"/>
          <Attr Name="_finderName" Value="Child"/>
          <Attr Name="_isUpdateable" Value="true"/>
        </DesignTime>
        <AttrArray Name="Attributes">
          <Item Value="model.eo.Child.ParentPk"/>
        </AttrArray>
      </AssociationEnd>
    </Association>==============================================================================
    Here is the ParentEv.xml for the ParentEv VO:
    <?xml version="1.0" encoding="UTF-8" ?>
    <!DOCTYPE ViewObject SYSTEM "jbo_03_01.dtd">
    <!---->
    <ViewObject
      xmlns="http://xmlns.oracle.com/bc4j"
      Name="ParentEv"
      Version="11.1.1.55.36"
      BindingStyle="OracleName"
      CustomQuery="true"
      RowClass="model.vo.ev.ParentEvRowImpl"
      ComponentClass="model.vo.ev.ParentEvImpl"
      PageIterMode="Full"
      UseGlueCode="false">
      <DesignTime>
        <Attr Name="_codeGenFlag2" Value="Access|Coll"/>
        <Attr Name="_isExpertMode" Value="true"/>
        <Attr Name="_isCodegen" Value="true"/>
      </DesignTime>
      <EntityUsage
        Name="Parent"
        Entity="model.eo.Parent"/>
      <ViewAttribute
        Name="ParentDesc"
        IsSelected="false"
        IsQueriable="false"
        IsPersistent="false"
        PrecisionRule="true"
        Precision="255"
        EntityAttrName="ParentDesc"
        EntityUsage="Parent"
        AliasName="PARENTDESC"/>
      <ViewAttribute
        Name="ParentPk"
        IsQueriable="false"
        IsPersistent="false"
        PrecisionRule="true"
        EntityAttrName="ParentPk"
        EntityUsage="Parent"/>
      <ViewLinkAccessor
        Name="ChildEv"
        ViewLink="model.vo.vl.ChildEvParentEvVl"
        Type="oracle.jbo.RowIterator"
        IsUpdateable="false"/>
    </ViewObject>==============================================================================
    Here is the ChildEv.xml for the ChildEv VO:
    <?xml version="1.0" encoding="UTF-8" ?>
    <!DOCTYPE ViewObject SYSTEM "jbo_03_01.dtd">
    <!---->
    <ViewObject
      xmlns="http://xmlns.oracle.com/bc4j"
      Name="ChildEv"
      Version="11.1.1.55.36"
      BindingStyle="OracleName"
      CustomQuery="true"
      RowClass="model.vo.ev.ChildEvRowImpl"
      ComponentClass="model.vo.ev.ChildEvImpl"
      PageIterMode="Full"
      UseGlueCode="false">
      <DesignTime>
        <Attr Name="_codeGenFlag2" Value="Access|Coll"/>
        <Attr Name="_isExpertMode" Value="true"/>
        <Attr Name="_isCodegen" Value="true"/>
      </DesignTime>
      <EntityUsage
        Name="Child"
        Entity="model.eo.Child"/>
      <ViewAttribute
        Name="ChildDesc"
        IsSelected="false"
        IsQueriable="false"
        IsPersistent="false"
        PrecisionRule="true"
        Precision="255"
        EntityAttrName="ChildDesc"
        EntityUsage="Child"
        AliasName="CHILDDESC"/>
      <ViewAttribute
        Name="ChildPk"
        IsUpdateable="while_insert"
        IsQueriable="false"
        IsPersistent="false"
        IsNotNull="true"
        PrecisionRule="true"
        EntityAttrName="ChildPk"
        EntityUsage="Child"/>
      <ViewAttribute
        Name="ParentPk"
        IsQueriable="false"
        IsPersistent="false"
        IsNotNull="true"
        PrecisionRule="true"
        EntityAttrName="ParentPk"
        EntityUsage="Child"/>
    </ViewObject>==============================================================================
    Here is the ChildEvParentEvVl.xml for the view link between ParentEv and ChildEv VOs:
    <?xml version="1.0" encoding="UTF-8" ?>
    <!DOCTYPE ViewLink SYSTEM "jbo_03_01.dtd">
    <!---->
    <ViewLink
      xmlns="http://xmlns.oracle.com/bc4j"
      Name="ChildEvParentEvVl"
      Version="11.1.1.55.36">
      <DesignTime>
        <Attr Name="_isCodegen" Value="true"/>
      </DesignTime>
      <ViewLinkDefEnd
        Name="ParentEv"
        Cardinality="1"
        Owner="model.vo.ev.ParentEv"
        Source="true">
        <DesignTime>
          <Attr Name="_finderName" Value="ParentEv"/>
          <Attr Name="_isUpdateable" Value="true"/>
        </DesignTime>
        <AttrArray Name="Attributes">
          <Item Value="model.vo.ev.ParentEv.ParentPk"/>
        </AttrArray>
      </ViewLinkDefEnd>
      <ViewLinkDefEnd
        Name="ChildEv"
        Cardinality="-1"
        Owner="model.vo.ev.ChildEv">
        <DesignTime>
          <Attr Name="_finderName" Value="ChildEv"/>
          <Attr Name="_isUpdateable" Value="true"/>
        </DesignTime>
        <AttrArray Name="Attributes">
          <Item Value="model.vo.ev.ChildEv.ParentPk"/>
        </AttrArray>
      </ViewLinkDefEnd>
    </ViewLink>

  • Delete Command Button to delete particular row from VO

    Hi,
    I have dragged & dropped an VO into jspx page as table, from data-control pallete dragged Delete operation as a button on to the table as last column.
    By pressing delete button, it is deleting top row from VO. I want to delete the particular row w.r.t delete button on the column list....?
    regards.

    Iam using JDev 11.1.1.5 version,
    Irespective of the row selected in VO and pressing delete button will delete only first row(starting row of VO).
    Note: Each row of VO having delete button(bcoz, i dragged & dropped delete operation has a button as a last column of table)
    regards.

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