Hi all,
I am new to Jsf and facelets. I need to implement the following conditions.
I have a dataTable. When I select a row and press a button (not in the table, but a separate one) , I need to delete that row. But the row should not be deleted in the backend.
Please I need help in this regard. Please help me in this.
Thanks BaluSC. I tried with the following code. But didn't get it done. Can you please look at it.
I have three java files and one xhtml file.
DataObject.java
package here ....
public class DataObject
{
protected String customer ;
protected String location ;
protected String status ; protected int selectedRow ;
private DataObject()
{ }
private DataObject(String customer , String location, String status, int selectedaRow)
{ this.customer = customer ; ....... ; this.selectedRow = selectedRow ; }
*******************************************************************
And the setters and getters for the member variables are followed there
***************************************
2. DataLogic.java
package here...
import java.util.* ;
import *.*.DataObject ; // the full path here.
private static final DataLogic _instance = new DataLogic();
private ArrayList<DataObject> dataList = new ArrayList<DataObject>(); ;
private DataLogic()
{ addObjects(); }
public static DataLogic getInstance()
{return _instance; }
public ArrayList getDataList()
{ return dataList;}
public ArrayList<DataObject> addObjects()
{
dataList = new ArrayList<DataObject>();
String customer2 = "customer2"; String location2 = "sjc2";
String status2=" status2"; int selectedRow2 =-2 ;
DataObject Obj2 = new DataObject(customer2, location2,status2,selectedRow2);
dataList.add(Obj2);
DataObject Obj[] = new DataObject[10];
String customer[] = new String[10]; String location[] = new String[10];
String status[]= new String[10]; int selectedRow = -1 ;
for(int iCount=0; iCount<3; iCount++ )
{
customer[iCount] = "customer" + iCount ;
location[iCount] = "location" + iCount ;
status[iCount] = "status" + iCount ;
Obj[iCount] =new DataObject(customer[iCount],location[iCount], status[iCount],selectedRow);
dataList.add(Obj[iCount]);
}
return dataList ;
}
public String changeObjects(DataObject object, int value)
{
int howMany = 0;
String returnString = " begin ";
DataObject changeValueObject = new DataObject();
if(dataList!= null)
{
Iterator changeValue = dataList.iterator();
while(changeValue.hasNext()
{
changeValueObject = (DataObject)changeValue.next();
if(object.getCustomer() == changeValueObject.getCustomer() &&
object.getLocation() == changeValueObject.getLocation() &&
alarmObject.getStatus() == changeValueObject.getStatus() &&
)
{
changeValueObject.setSelectedRow(value) ;
howMany ++ ;
}
}
}
return returnString ;
}
}
**************************************************************
package ...
import java.util.*;
import javax.faces.component.*;
import javax.faces.component.UIData;
import *.*.*.ata.DataObject;
import *.*.*.DataLogic;
public class DataHandler
{
private DataObject dataMask = new DataObject() ;
private UIData dataTable = new UIDataTable() ;
public DataHandler()
{ }
public void setDataMask(DataObject dataMask)
{this.dataMask = dataMask ; }
public DataObject getDataMask()
{return dataMask ;}
/* The UIData getters and setters. This is for capturing the selectedRow*/
public UIData getDataTable()
{ return dataTable;}
public void setDataTable(UIData dataTable)
{ this.dataTable = dataTable ; }
public ArrayList getData()
{
ArrayList<DataObject> data = DataLogic.getInstance().getDataList();
Iterator popUp = data.iterator();
/* If the selectedRow is -2 it means the selectedRow is masked so remove from the list */
while(popUp.hasNext())
{
DataObject object =((DataObject)popUp.next());
if(object.getSelectedRow()==-2)
{ popUp.remove(); }
}
return data;
}
public void maskLogic()
{
//call the changeObjects function to change the value of the selectedRow of the object
// to -2 for masking
if(dataMask!= null)
{ String returned = changeObjects(dataMask, -2) ; }
}
public void selectedRowLogic()
{
/* Get the row Selected from the table */
dataMask = (DataObject)dataTable.getDataTable().getRowData();
if(dataMask!= null)
{ String returned = changeObjects(dataMask, -3) ; }
}
}
*************************************************************
And finally the data.xhtml file.
<body>
<ui:composition template="appTemplateToolbarRightPane.xhtml">
<ui:define name="tabcontent">
<h:form>
<script>
function selectRow(Row)
{
var alrmrow = Row.childNodes[1].childNodes[0].value;
alert(alrmrow);
Row.childNodes[1].childNodes[0].value = -3 ;
}
</script>
<t:dataTable id="data_list"
width="70%"
var="dataMonitor"
value="#{dataHandler.data}"
binding="#{dataHandler.dataTable}"
rowOnClick="selectRow(this);"
summary="Loading the data list">
<t:column>
<f:facet name="header">
<h:outputLabel value="Customer" />
</f:facet>
<t:outputLabel value="#{dataMonitor.customer}" />
<t:inputHidden name="hiddenRow" value="#{dataMonitor.selectedRow}" />
<t:commandButton value="#{dataMonitor.selectedRow}"
action="#{dataHandler.selectedRowLogic}"
style="display:none" />
</t:column>
<t:column headerstyleClass="liveAlarmEventNameHeaderClass">
<f:facet name="header">
<h:outputLabel value="Location" />
</f:facet>
<h:outputLabel value="#{dataMonitor.location}" />
</t:column>
<t:column >
<f:facet name="header">
<h:outputLabel value="Status" />
</f:facet>
<h:outputLabel value="#{dataMonitor.status}" />
</t:column>
<t:column >
<f:facet name="header">
<h:outputLabel value="SelectedRow" />
</f:facet>
</t:column>
</t:dataTable> </div>
<div>
<t:commandButton value="Mask" action="#{dataHandler.maskLogic}" />
</div>
</h:form> </ui:define>
</ui:define>
</ui:composition>
</body>
</html>
So can u plese tell me whether this works or not.
