Deleting a row from View Dynamically

Hi Experts,
I am working with dynamic programming... there is Add button Once I press Add it will create the 3 input fileds and one button (its for Delete ) in one row.
If press the Button( Delete ) it should delete the respective row ( 3 input fileds and the button ( delete) ).
Please help me with the solution.
Thanks,
Anil

Thanks Trond for your reply.
I used below code and when I am click on the delete button its deleting the top row on the view.
Its not deleting the respective row...
Ex if i have 4 rows on view and I am pressing on second row delete button but still its deleting the top row.
I changed index of Remove_child and tried..
I used index = 0 , index = 1 and i am not passed any index still its not deleting the respective row.
CALL METHOD lr_container->remove_child
        EXPORTING
          index = 1
          id    = gv_char.
Please let me know how can i do this.

Similar Messages

How To Delete a row from view object

Hi
I have a table whose data is populated based on the view object... and for each row i have a delete icon...
when i press on this delete icon i want to delete that particular row from the view object only..but not from the data
base..please help me in this issue
Thanks

Hi,
as per krishna priya says u can delete .
-----1st one thing let me know vo is eo based .???.
If not here is the sample code to delete a row not from the data base.:
public void Deleterow(OAPageContext pageContext, OAWebBean webBean,String prjid)
int idtodelete;
int fetchedrowcount;
Number prjojectid;
RowSetIterator deleteIter;
prjidtodelete=Integer.parseInt(prjid);
OADBTransaction tr = getOADBTransaction();
ProjectsVORowImpl row=null;
ProjectsVOImpl vo= getProjectsVO1();
fetchedrowcount=vo.getRowCount();
deleteIter = vo.createRowSetIterator("deleteIter");
deleteIter.setRangeStart(0);
deleteIter.setRangeSize(fetchedrowcount);
for(int i=0;i<fetchedrowcount;i++)
row= (ProjectsVORowImpl)deleteIter.getRowAtRangeIndex(i);
prjojectid=(Number)row.getAttribute("ProjectId");
if (prjojectid.compareTo(prjidtodelete)==0)
row.remove();
break;
deleteIter.closeRowSetIterator();
Regards
Meher Irk
Edited by: Meher Irk on Nov 2, 2010 12:42 AM

How to delete multiple rows from ADF table

How to delete multiple rows from ADF table

Hi,
best practices when deleting multiple rows is to do this on the business service, not the view layer for performance reasons. When you selected the rows to delete and press submit, then in a managed bean you access thetable instance (put a reference to a managed bean from the table "binding" property") and call getSeletedRowKeys. In JDeveloper 11g, ADF Faces returns the RowKeySet as a Set of List, where each list conatins the server side row key (e.g. oracle.jbo.Key) if you use ADF BC. Then you create a List (ArrayList) with this keys in it and call a method exposed on the business service (through a method activity in ADF) and pass the list as an argument. On the server side you then access the View Object that holds the data and find the row to delte by the keys in the list
Example 134 here: http://blogs.oracle.com/smuenchadf/examples/#134 provides you with the code
Frank

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>

How To Delete a Row From a TableView !!!!

Hi,
Does any know how to delete a row from a table view model.
I have a TableViewModel being displayed, when the user select the particular row and click delete i want that particular row to be deleted.
Any Suggestions How.
Thanks,
Emmanuel.

If u want to delete single row, then set the property of TableView - selectionMode="SINGLESELECT". Select the radio button and click on delete button. In the main program, you can get the row value like...
public void onDeleteButtonClicked(Event event) throws PageException {
TableView table = (TableView) this.getComponentByName ("idTableView");
DefaultTableViewModel dmodel = myBean.beanModel;
String pid = "", row_selected;
// Get the first visible row
int firstVisibleRow = table.getVisibleFirstRow();
// Get the last visible row
int lastVisibleRow = table.getVisibleLastRow();
for (int i = firstVisibleRow; i <= lastVisibleRow; i++) {
if (table.isRowSelected(i)) {
row_selected = i;
pid = dmodel.getValueAt(i, 1).toString();
"i" will give you the row no, pid has the value of the row at first column.
Hope this helps.
Thanks,
Praveen

Delete a row from a data object using an AQ-driven EMS

Hello, technetwork.
I need to show the contents of a table that changes frequently (inserts, updates and deletes) at ORDBMS 10g in my BAM dashboard.
What i have done is:
- Create two different queue tables, queues.
- Create two triggers: one for "AFTER insert or UPDATE" and the other for "BEFORE DELETE".
- Create two EMS, one configured to Upsert operations and the other to Delete.
- The Upsert EMS works, but the Delete EMS does not.
- Both EMS Metrics say that they work fine and commit the messages i send to the ADC.
- Testing showed records are populated and updated in the ADC but never deleted.
There is a detailed user case for "Creating an EMS Against Oracle Streams AQ JMS Provider" in the Fusion Midleware Developer's Guide for SOA Suite, but it deals only with Upserts. I am using the last versions of SOA suite and Weblogic. The official support has no information either.
I hope writing a web service client isn't the only way to delete a row from a data object. Am i missing something? Any help will be much appreciated.
My EMS config:
Initial Context Factory: weblogic.jndi.WLInitialContextFactory.
JNDI Service Provider URL: t3://<spam>:80.
Topic/Queue Connection Factory Name: jms/BAMAQTopicCF.
Topic/Queue Name: jms/ProdGlobalBAMD_flx.
JNDI Username: .
JNDI Password: .
JMS Message Type: TextMessage.
Durable Subscriber Name (Optional): BAM_ProdGlobalBAMD.
Message Selector (Optional): .
Data Object Name: /bam/ProdGlobalBAM_flx.
Operation: Delete.
Batching: No.
Transaction: No.
Start when BAM Server starts: No.
JMS Username (Optional): .
JMS Password (Optional): .
XML Formatting
Pre-Processing
Message Specification
Message Element Name: row
Column Value
Element Tag
Attribute
Source to Data Object Field Mapping
Key Tag name Data Object Field
. BARCODE. BarCode.
Added my EMS config

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.

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.

Deleting Multiple Rows From Multiple Tables As an APEX Process

Hi There,
I'm interesting in hearing best practice approaches for deleting multiple rows from multiple tables from a single button click in an APEX application. I'm using 3.0.1.008
On my APEX page I have a Select list displaying all the Payments made and a user can view individual payments by selecting a Payment from the Select List (individual items are displayed below using Text Field (Disabled, saves state) items with a source of Database Column).
A Payment is to be deleted by selecting a custom image (Delete Payments Button) displayed in a Vertical Images List on the same page. The Target is set as the same page and I gave the Request a name of DELETEPAY.
What I tried to implement was creating a Conditional Process On Submit - After Computations and Validations that has a source of a PL/SQL anonymous block as follows:
BEGIN
UPDATE tblDebitNotes d
SET d.Paid = 0
WHERE 1=1
AND d.DebitNoteID = :P7_DEBITNOTEID;
INSERT INTO tblDeletedPayments
( PaymentID,
DebitNoteID,
Amount,
Date_A,
SupplierRef,
Description
VALUES
( :P7_PAYMENTID,
:P7_DEBITNOTEID,
:P7_PAID,
SYSDATE,
:P7_SUPPLIERREF,
:P7_DESCRIPTION
DELETE FROM tblPayments
WHERE 1=1
AND PaymentID = :P7_PAYMENTID;
END;
The Condition Type used was Request = Expression 1 where Expression 1 had a value of DELETEPAY
However this process is not doing anything!! Any insights greatly appreciated.
Many thanks,
Gary.

...the "button" is using a page level Target,...
I'm not sure what that means. If the target is specified in the definition of a list item, then clicking on the image will simply redirect to that URL. You must cause the page to be submitted instead, perhaps by making the URL a reference to the javaScript doSubmit function that is part of the standard library shipped with Application Express. Take a look at a Standard Tab on a sample application and see how it submits the page using doSubmit() and emulate that.
Scott

Use Preparedstatement to delete several rows from database

Hello everyone,
I am trying to delete multiple rows from database at one time using Preparedstatement.
It works well when I tried in SQL directly,the sql query is as follows:
delete from planners_offices where planner ='somename' and office in ( 'officeone', 'officetwo', 'officethree')
I want to delete those 3 rows at one time.
But when I am using preparedstatement to implement this function, it does not work. It did not throw any exception, but just does not work for me, the updated rows value always returns "0".
Here is my simplified code:
PreparedStatement ps = null;
sqlStr = " delete from PLANNERS_OFFICES where planner = ? and office in (?) "
Connection con = this.getConnection(dbname);
try
//set the sql statement into the preparedstatement
ps = con.prepareStatement(sqlStr);
ps.setString(1,"somename");
ps.setString(2,"'officeone','officetwo','officethree'");
int rowsUpdated =ps.executeUpdate();
System.out.println(rowsUpdated);
//catch exception
catch (SQLException e)
System.out.println("SQL Error: " + sqlStr);
e.printStackTrace();
catch (Exception e) {
e.printStackTrace();
} finally {
this.releaseConnection(dbname, con);
try{
ps.close();
}catch (SQLException e){
e.printStackTrace();
rowsUpdated always give me "0".
I tried only delete one record at one time, "ps.setString(2, "officeone");", it works fine.
I am guessing the second value I want to bind to the preparedstatement is not right, I tried several formats of that string, it does not work either.
Can anyone give me a clue?
Thanks in advance !
Rachel

the setString function in a preparedStatement doesn't just do a replace with the question mark. It is doing some internal mumbojumbo(technical term) to assign your variable to the ?.
If you are looking to do your statement, then you will need to put in the correct of # of question marks as you need for the in clause.
delete from PLANNERS_OFFICES WHERE PLANNER = ? and office in (?,?,?)
If you need to allow for one or more parameters in your in clause, then you will need to build your SQL dynamically before creating your prepared statement.
ArrayList listOfOfficesToDelete ;
StringBuffer buffer = new StringBuffer("DELETE FROM PLANNERS_OFFICES WHERE PLANNER = ? AND OFFICE IN (");
for(int i = 0; i < listOfOfficesToDelete.size(); i++ )
   if( i != 0 )
       buffer.append(",");
   buffer.append("?");
buffer.append(")");
cursor = conn.prepareStatement( buffer.toString() );
cursor.setString(1, plannerObj);
for(int i = 0; i < listOfOfficesToDelete().size(); i++ )
    cursor.setString(i+1, listOfOfficesToDelete.get(i) );
cursor.executeUpdate() ;

HOW TO DELETE THE ROW FROM DATABASE

hI,
Iam pasting my code below.My problem isi retrieve rows from database and display them in jsp page in rows.For each row there is delete hyperlink.Now when i click that link i should only delete the row corresponding to that delete link temporarily but it should not delete the row from database now.It should only delete the row from database when i click the save button.How can i do this can any one give some code.
thanks
naveen
[email protected]
<%@ page language="java" import="Utils.*,java.sql.*,SQLCon.ConnectionPool,java.util.Vector,java.util.StringTokenizer" %>
<html>
<head>
<meta http-equiv="Content-Language" content="en-us">
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<meta name="GENERATOR" content="Microsoft FrontPage 4.0">
<meta name="ProgId" content="FrontPage.Editor.Document">
<title>Item Details</title>
<script>
function submitPage()
document.details.action = "itemdetails.jsp" ;
document.details.submit();
</script>
</head>
<body>
<form name="details" action="itemdetails.jsp" method="post">
<%
ConnectionPool pool;
Connection con = null;
Statement st;
ResultSet rs =null;
%>
<table border="0" cellpadding="0" cellspacing="0" width="328">
<tr>
<td width="323" colspan="4"><b>Reference No :</b> <input type="text" name="txt_refno" size="14">
<input type="submit" value="search" name="search" ></td>
</tr>
<tr>
<td width="81" bgcolor="#000099"><font color="#FFFFFF"><b>Item Code</b></font></td>
<td width="81" bgcolor="#000099"><font color="#FFFFFF"><b>Item No</b></font></td>
<td width="81" bgcolor="#000099"><font color="#FFFFFF"><b>Amount </b></font></td>
<td width="80" bgcolor="#000099"> </td>
</tr>
<%
pool= new ConnectionPool();
Utils utils = new Utils();
double total =0.00;
String search =utils.returnString(request.getParameter("search"));
if(search.equals("search"))
try
String ref_no =utils.returnString(request.getParameter("txt_refno"));
String strSQL="select * from ref_table where refno='" + ref_no + "' ";
con = pool.getConnection();
st=con.createStatement();
rs = st.executeQuery(strSQL);
while(rs.next())
String itemcode=rs.getString(2);
int item_no=rs.getInt(3);
double amount= rs.getDouble(4);
total= total + amount;
%>
<tr>
<td width="81"><input type=hidden name=hitem value=<%=itemcode%>><%=itemcode%></td>
<td width="81"><input type=hidden name=hitemno value=<%=item_no%>><%=item_no%></td>
<td width="81"><input type=hidden name=hamount value=<%=amount%>><%=amount%></td>
<td width="80"><a href="delete</td>
</tr>
<%
}catch(Exception e){}
finally {
if (con != null) pool.returnConnection(con);
%>
<tr>
<td width="323" colspan="4">
<p align="right"><b>Total:</b><input type="text" name="txt_total" size="10" value="<%=total%>"></td>
</tr>
<tr>
<td width="323" colspan="4">
<input type="button" value="save" name="save"></td>
</tr>
</table>
</form>
</body>
</html>

You mean when you click on the hyperlink you want that row to disappear from the page, but not delete the row from the database until a commit/submit button is pressed?
Personally, I think I'd prefer that you have a delete checkbox next to every row and NOT remove them from the display if I was a user. You give your users a chance to change their mind about their choice, and when they're done they can see exactly which rows will be deleted before they commit.
You know your problem, of course, so you might have a good reason for designing it this way. But I'd prefer not removing them from the display. JMO - MOD

How to get first row from View Object cache.

hi,
I am using Jdeveloper 11.1.1.6
can we get first row from View Object cache??
Thanks in Advance.
Best
Shashidhar

Hi Frank,
Thanks for reply!!
My case is:
I have a Query based ViewObject.
One of the field is LOV and remaining fields are in ADF table. the LOV field is out side ADF table when i insert first record in ADF table and i choose LOV filed the value is selected.
when i create second row LOV value got refreshed because both are in same VO.
I need to get the LOV value of first row and set same value to second Row.
Shashidhar

Deleting a row from a Procedure

Hi All
Can one of you tell me how to delete a row from a Procedure
It is created with
CREATE OR REPLACE PROCEDURE report.NAMEOFTABLE
(nPutId IN Report.ID%TYPE,
cArea IN Report.Area%TYPE,
cSubject IN Report.Subject%TYPE,
nUserId IN Report.EngineerID%TYPE,
cDesc IN Report.Description%TYPE,
cSide IN Report.SideEffects%TYPE,
cImpact IN Report.Impact%TYPE,
cNotes IN Report.Notes%TYPE,
nValid IN Report.Valid%TYPE) AS
-- Add or update Report
-- If nId < 1 then a record is added, otherwise updated.
BEGIN
IF nId < 1 THEN
INSERT INTO Report
(Area, Subject, EngineerID,
Description, SideEffects, Impact,
ReportNotes, Valid)
VALUES
(cArea, cSubject, nUserId, cDesc, cSide, cImpact, cNotes, nValid);
ELSE
UPDATE Report
SET ReportArea = cArea,
ReportSubject = cSubject,
ReportDescription = cDesc,
ReportSideEffects = cSide,
ReportImpact = cImpact,
ReportNotes = cNotes,
ReportValid = nValid
WHERE ReportID = nPutId;
END IF;
COMMIT;
END;
CREATE SYNONYM Admin.NAMEOFTABLE
Report.NAMEOFTABLE;
But I need to make 1 field of the impact and the sideEffect called the ImpactEffect
So how do i delete the field of Side effect and change the name of the Impact field.
Sould I make a new Procedure?

If you want to delete a row, you'd need a DELETE statement. It is not obvious to me, though, that you really want to delete a row. It sounds like you're trying to update a row, and there is an UPDATE statement in the procedure. Unfortunately, I'm very unsure exactly what you're trying to accomplish and how this procedure relates to that goal. Perhaps if you could post the starting state of the row, the procedure call you're trying to make, and the end state of that row, things might be much clearer.
As an aside, do you really have a schema and a table named REPORT? That seems rather confusing.
Justin

Deleting a row from a table control through right-click menu

I have a table control. I want to delete a row from it when a user right clicks on a particular row and selects "Delete row" menu item. I have managed the creation of menu item but have not been able to delete the row which is right clicked and the menu item "Delete row" is selected. Guidance required! Thanks!

smercurio_fc wrote:
It's irrelevant whether the table is a control or indicator. See attached VI.
Hi smercurio,
please see the attached picture. In my previous post i mean the different in the menu. The red marked function is not available, if the table is an indicator. LV8.5!
Mike
Message Edited by MikeS81 on 04-18-2008 05:19 PM
Attachments:
Unbenannt.PNG ‏22 KB

Deleting a row from a Row Repeater

Hi All,
How could i delete a row from a row repeater??????
I am using REMOVE_ELEMENT method from IF_WD_CONTEXT_NODE interface... Is this the correct way!!!!!!.
Is there anyother way to do the same?????
Best Regards.
Shafiq Ahmed Khan.

Hi
first u get the index from the context element. with the help of the index u can get that particular element using get element.
then u remove the element .
check this code.
CALL METHOD context_element->get_index
receiving
    my_index = lv_index.
CALL METHOD lo_nd_rcf_edu_det->get_element
EXPORTING
    index        = lv_index
receiving
    node_element = lo_el_rcf_edu_det .
CALL METHOD lo_nd_rcf_edu_det->remove_element
EXPORTING
    element          = lo_el_rcf_edu_det
receiving
   has_been_removed =
Declare a parameter context_element in the method of type if_wd_context_element
regards
chythanya

Deleting a row from matrix by context menu

Hi all
does anyone know how can i cause right click on mouse button. on a certain row within a matrix to show a context menu with the option to delete the row. and when pressing the menu item handling the event of deleting the row from the matrix?
appreciate the help
Yoav

Hi Yoav,
Simply, 'context menu' have to be handled with 'menu event' object.
It can be done by 'flushToDataSource' method and some tricks.
Basically, method delete the row without any clause of addon code.
But it's only can be done in display side.
If you're using DBDataSource, you have to flush to the datasource.
I mean, you have to update datasource with the data displayed in the matrix.
and then, delete the last row of the datasource.
FlushToDataSource doesn't affect to the number of rows in the datasource.
You have to delete a row with a method of DBDatasource.. I can't remember the name.
If, the matrix uses userdatasource, you don't need to delete a row in datasource.
Because userdatasource doesn't have a concept of 'row', actually.
Hope this helpful for you.
Regards,
Hyunil Choi

Deleting a row from View Dynamically

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