I am deleting rows based on checkbox click.But when i select a checkbox and click delete , i am displayed this error " DML statement found null SObject at position 0 Error is in expression '{!del}' in component in page forecastbywarehouse: Class.ForecastByWarehouseController.del: line 269, column 1"
Could you please help me in this.
VF page
<apex:page controller="ForecastByWarehouseController" title="Forecast By Warehouse">
<script>
var elementFocus = null;
function retainFocus()
{
document.getElementById(elementFocus.name).focus();
}
function JS_QtyChanged(ele)
{
console.log(ele);
console.log(ele.parentNode.parentNode.childNodes);
var sum = 0;
var i;
var nodes=ele.parentNode.parentNode.childNodes;
for(i in ele.parentNode.parentNode.childNodes)
{
console.log(nodes[i].className);
if(nodes[i].className == "quantityTableCell"){
var className = nodes[i].childNodes[0].className;
if((className=="quantityCellRed" || className=="quantityCell"))
{
var val = nodes[i].childNodes[0].value;
console.log(val);
if(!isNaN(val) && val !='undefined' && val != null && val != '')
{
//alert(val);
sum += parseFloat(val);
}
}
}
if(nodes[i].className == "quantityTotalCell"){
oldvalue = parseInt(nodes[i].innerHTML);
if(oldvalue != sum){
ele.className = "quantityCellRed";
}
var n = sum.toFixed(2);
nodes[i].innerHTML = n;
}
}
//call_qtyChanged();
}
</script>
<apex:form id="frm">
<apex:pageblock >
<apex:pageBlockSection columns="3" title="Select Warehouse">
<apex:inputField value="{!objProdInventory.gii__Warehouse__c}" label="Warehouse"/>
<apex:inputField value="{!objForecast.Sales_Year__c}" label="Sales Year"/>
<apex:commandButton value="Submit" action="{!fetchProducts}" rerender="frm"/>
</apex:pageBlockSection>
</apex:pageblock>
<apex:pageblock id="pb_filter" rendered="{!warehouseSelected }">
<apex:pageBlockSection columns="3" title="Filter Products">
<apex:selectList size="1" label="Search By" value="{!strFilterBy}">
<apex:selectOptions value="{!filterBy}"/>
</apex:selectList>
<apex:inputText value="{!searchText}" label="Search Text"/>
<apex:commandButton value="Search" action="{!searchProducts}" rerender="pb_products"/>
</apex:pageBlockSection>
</apex:pageblock>
<apex:outputpanel id="pb_products" >
<apex:pageBlock rendered="{!IF(lstProdWrapper.size>0,true,false)}">
<apex:pageBlockButtons >
<apex:commandButton value="Delete" action="{!del}"/>
<apex:commandButton value="Save" action="{!save}"/>
<apex:commandButton value="Save & Exit" action="{!saveNexit}"/>
</apex:pageBlockButtons>
<center>
<apex:outputPanel layout="block" styleClass="pSearchShowMore" id="otpNav">
<apex:image url="/img/search_prevarrow_disabled.gif" styleClass="prevArrow" rendered="{!NOT(Con.HasPrevious)}"/>
<apex:image url="/img/search_prevarrow.gif" title="Previous Page" styleClass="prevArrow" rendered="{!Con.HasPrevious}"/>
<apex:commandLink action="{!Previous}" title="Previous Page" value="Previous Page" rendered="{!HasPrevious}" reRender="pb_products"/>
<apex:outputPanel styleClass="pShowLess noLink" style="color:grey" rendered="{!NOT(HasPrevious)}">Previous Page</apex:outputPanel>
({!IF(PageNumber == 0,1,(PageNumber * PageSize)+1)}-{!IF(CountTotalRecords != null && CountTotalRecords < PageSize,CountTotalRecords,((PageNumber+1) * PageSize))})
<apex:outputPanel styleClass="pShowLess noLink" style="color:grey" rendered="{!NOT(HasNext)}" >Next Page</apex:outputPanel>
<apex:commandLink title="Next Page" value="Next Page" rendered="{!HasNext}" action="{!Next}" reRender="pb_products"/>
<apex:image url="/img/search_nextarrow.gif" title="Next Page" styleClass="nextArrow" rendered="{!Con.HasNext}"/>
<apex:image url="/img/search_nextarrow_disabled.gif" rendered="{!NOT(Con.HasNext)}"/>
</apex:outputPanel>
</center><br/>
<apex:outputpanel id="tablevalues" >
<table style="width:100%">
<tr>
<th>{!$Label.Action}</th>
<th>{!$Label.Forecast_Product_Code}</th>
<th>{!$Label.Forecast_Product_SKU}</th>
<apex:repeat value="{!allMonths}" var="month">
<th align="center">{!month}</th>
</apex:repeat>
<th>{!$Label.Forecast_Total}</th>
</tr>
<apex:repeat value="{!lstProdWrapper}" var="prod">
<tr>
<td><apex:inputCheckbox value="{!prod.checked}"/></td>
<td width="140px">{!prod.productSKU}</td>
<td width="80px">{!prod.productCode}</td>
<apex:variable value="{!0}" var="count"/>
<apex:repeat value="{!allMonths}" var="mon">
<td class="quantityTableCell">
<apex:inputText value="{!prod.monthQty[mon]}" styleClass="{!if(prod.cellEdited[mon],'quantityCellRed','quantityCell')}" onchange="JS_QtyChanged(this)"/>
</td>
</apex:repeat>
<td align="right" padding-top= "2px" class="quantityTotalCell">
<b><apex:outputText value="{!prod.total}"/></b>
</td>
</tr>
</apex:repeat>
</table>
</apex:outputpanel>
</apex:pageBlock>
<apex:outputpanel rendered="{!IF(lstProdWrapper.size==0 && warehouseSelected ,true,false)}">
<apex:pageBlock >
{!$Label.No_Result_Found}
</apex:pageBlock>
</apex:outputpanel>
</apex:outputpanel>
</apex:form>
</apex:page>
My apex class
global class ForecastByWarehouseController
{
public ApexPages.StandardSetController con{get; set;}
public List<gii__ProductInventory__c> lstProdInventory{get;set;}
public gii__ProductInventory__c objProdInventory{get;set;}
public gii__Warehouse__c objWarehouse{get;set;}
public Forecast__c objForecast{get;set;}
public String Searchtext{get;set;}
public List<ProductWrapper> lstProdWrapper{get;set;}
public String strFilterBy{get;set;}
public boolean noResultFound {get;set;}
public boolean warehouseSelected {get;set;}
public Integer CountTotalRecords{get;set;}
public Integer NoOfPages{get;set;}
public Integer PageSize{get;set;}
public Integer PageNumber{get;set;}
public String soql;
public List<Forecast__c> allForecast;
public gii__Warehouse__c selectedWarehouse;
public Sales_Year__c selectSalesYear;
public List<String> allMonths{get;set;}
public String filterQueryPart;
public ForecastByWarehouseController()
{
Searchtext = '';
strFilterBy = '';
objProdInventory = new gii__ProductInventory__c();
lstProdInventory = new List<gii__ProductInventory__c>();
objForecast = new Forecast__c();
lstProdWrapper = new List<ProductWrapper>();
PageSize = 10;
PageNumber = 0;
warehouseSelected = false;
allMonths = new List<String>{'January','February','March','April','May','June','July','August','September','October', 'November','December'};
}
public List<SelectOption> getFilterBy()
{
List<SelectOption> options = new List<SelectOption>();
options.add(new SelectOption('All','All Products'));
options.add(new SelectOption('gii__Family__c','Product Family'));
options.add(new SelectOption('gii__Color__r.name','Color'));
options.add(new SelectOption('gii__ProductStyle__r.name','Style'));
options.add(new SelectOption('gii__Size__c','Size'));
return options;
}
public void addFilters()
{
system.debug('\n--strFilterBy--'+strFilterBy+'\n--Constants.STYLEFILTER--'+Constants.STYLEFILTER);
if((strFilterBy != '' && searchText != '')&& (strFilterBy != 'All') && ((strFilterBy == Constants.STYLEFILTER) || (strFilterBy == Constants.COLORFILTER) || (strFilterBy == Constants.FAMILYFILTER) ))
{
filterQueryPart = ' AND gii__Product__r.' + strFilterBy + ' LIKE \'%' + searchText + '%\'';
}
else if((strFilterBy != '' && searchText != '') && (strFilterBy == 'All') )
{
filterQueryPart = ' AND gii__Product__r.Name LIKE \'%' + searchText + '%\'';
}
else
filterQueryPart = '';
system.debug('\n--filterQueryPart--'+filterQueryPart);
}
public PageReference searchProducts()
{
fetchProducts();
return null;
}
public PageReference fetchProducts()
{
PageSize = 10;
PageNumber = 0;
warehouseSelected = true;
selectedWarehouse = [select id,name from gii__Warehouse__c where id=:objProdInventory.gii__Warehouse__c];
selectSalesYear = [select id,name from Sales_Year__c where id=:objForecast.Sales_Year__c];
createWrapper();
return null;
}
public void createWrapper()
{
lstProdWrapper = new List<ProductWrapper>();
addFilters();
system.debug('\n--searchText--'+searchText);
soql = 'Select id,gii__Product__r.gii__ProductStyle__r.name,name,gii__Product__c,gii__Product__r.name,gii__Product__r.gii__ProductCode__c,gii__Warehouse__c from gii__ProductInventory__c where gii__Product__r.gii__Style__c <> true AND gii__Warehouse__c =\'' + selectedWarehouse.id + '\' ' + filterQueryPart + ' Order By gii__Product__r.gii__ProductStyle__r.name NULLS LAST,gii__Product__r.name limit ' + PageSize + ' offset ' + PageNumber*PageSize;
String soql4count = 'Select count() from gii__ProductInventory__c where gii__Warehouse__c =\'' + selectedWarehouse.id + '\'';
CountTotalRecords= Database.countQuery(soql4count);
NoOfPages = CountTotalRecords/PageSize;
if(NoOfPages * PageSize < CountTotalRecords)
NoOfPages++;
System.debug(soql);
lstProdInventory = Database.query(soql);
allForecast = [select id,Product_Inventory__c,Sales_Year__c, (select id,name,Quantity__c,Month__c from Forecast_Details__r) from Forecast__c where Product_Inventory__c IN: lstProdInventory and Sales_Year__c =: selectSalesYear.id ];
Decimal totalForecast = 0;
for(gii__ProductInventory__c pi : lstProdInventory)
{
ProductWrapper pw = new ProductWrapper();
pw.productstyle = pi.gii__Product__r.gii__ProductStyle__r.name;
pw.monthQty = new Map<String,String>();
pw.oldMonthQty = new Map<String,String>();
pw.idMonthQty = new Map<String,String>();
pw.cellEdited = new Map<String,Boolean>();
pw.productSKU = pi.gii__Product__r.name;
pw.productCode = pi.gii__Product__r.gii__ProductCode__c;
pw.ProForecast = createForecast(pi,selectSalesYear);
totalForecast = 0;
for(Forecast_Detail__c fd : pw.ProForecast.Forecast_Details__r)
{
pw.monthQty.put(fd.Month__c,String.valueOf(fd.Quantity__c));
pw.oldMonthQty.put(fd.Month__c,String.valueOf(fd.Quantity__c));
pw.IdMonthQty.put(fd.Month__c,fd.id);
system.debug('\n--fd.Quantity__c;--'+fd.Quantity__c);
totalForecast += fd.Quantity__c;
}
pw.total = String.valueOf(totalForecast);
system.debug('\n--pw.total--'+pw.total);
for(integer i=0;i<12;i++)
{
if(!pw.monthQty.keyset().contains(allMonths[i]))
{
pw.monthQty.put(allMonths[i],'');
pw.oldMonthQty.put(allMonths[i],'xxx');
}
pw.cellEdited.put(allMonths[i],false);
}
system.debug('\n--pw.total--'+pw.total);
system.debug('\n--SIZEFILTER --'+Constants.SIZEFILTER );
// case when user do filter by size
if(strFilterBy == Constants.SIZEFILTER )
{
if(!string.isEmpty(Searchtext))
{
if(Integer.valueOf(Searchtext) == Integer.valueOf(pw.total))
{
lstProdWrapper.add(pw);
}
}
else
{
lstProdWrapper.add(pw);
}
}
else
{
lstProdWrapper.add(pw);
}
}
lstProdWrapper.sort();
}
public Forecast__c createForecast(gii__ProductInventory__c proInv, Sales_Year__c syear)
{
for(Forecast__c f : allForecast)
{
if(f.Product_Inventory__c == proInv.id && f.Sales_Year__c == syear.id)
return f;
}
Forecast__c fore = new Forecast__c();
fore.name = proInv.gii__Product__r.name + '-' + proInv.name + '-' + syear.name;
fore.Product_Inventory__c = proInv.id;
fore.Sales_Year__c = syear.id;
fore.Warehouse__c = proInv.gii__Warehouse__c;
fore.Product_Reference__c = proInv.gii__Product__c;
insert fore;
return fore;
}
public PageReference save()
{
List<Forecast_Detail__c> lstChild = new List<Forecast_Detail__c>();
for(ProductWrapper objProdWrap : lstProdWrapper)
{
for(integer i=0;i<12;i++)
{
if(objProdWrap.monthQty.get(allMonths[i]) != null && objProdWrap.monthQty.get(allMonths[i]) != '')
{
if(objProdWrap.oldMonthQty.get(allMonths[i]) == 'xxx')
{
lstChild.add(new Forecast_Detail__c(name=allMonths[i]+'-'+selectSalesYear.name, Month__c=allMonths[i], Quantity__c=Decimal.valueOf(objProdWrap.monthQty.get(allMonths[i])), Forecast__c=objProdWrap.ProForecast.id));
}
else
{
lstChild.add(new Forecast_Detail__c(id=objProdWrap.IdMonthQty.get(allMonths[i]),name=allMonths[i]+'-'+selectSalesYear.name, Month__c=allMonths[i], Quantity__c=Decimal.valueOf(objProdWrap.monthQty.get(allMonths[i])), Forecast__c=objProdWrap.ProForecast.id));
}
}
}
}
upsert lstChild;
createWrapper();
return null;
}
public PageReference saveNexit()
{
save();
PageReference pref = new PageReference(Label.Forecast_RetURL);
return pref;
}
global class ProductWrapper implements Comparable
{
public string productstyle {get;set;}
public String productSKU{get;set;}
public String productCode{get;set;}
public Forecast__c ProForecast{get;set;}
public String total{get;set;}
public Map<String, String> monthQty{get;set;}
public Map<String, String> oldMonthQty{get;set;}
public Map<String, Id> IdMonthQty{get;set;}
public Map<String, Boolean> cellEdited{get;set;}
public Boolean checked {get;set;}
public gii__ProductInventory__c emp {get;set;}
global Integer compareTo(Object compareTo) {
ProductWrapper compareToEmp = (ProductWrapper)compareTo;
if (productstyle == compareToEmp.productstyle) return 0;
if (productstyle > compareToEmp.productstyle) return 1;
return -1;
}
}
public Boolean hasNext
{
get
{
return (PageNumber+1)<NoOfPages;
}
set;
}
public Boolean hasPrevious
{
get
{
return PageNumber>0;
}
set;
}
public void previous()
{
PageNumber--;
createWrapper();
}
public void next()
{
PageNumber++;
createWrapper();
}
public void del() {
List<gii__ProductInventory__c> listEmpForDel = new List<gii__ProductInventory__c>();
List<ProductWrapper> listTempWrapper = new List<ProductWrapper>();
for(ProductWrapper w : lstProdWrapper) {
if(w.checked) {
listEmpForDel.add(w.emp);
} else {
listTempWrapper.add(w);
}
}
System.debug('++++++++++++Size++++++++++++++++++ :'+listEmpForDel.size());
System.debug('+++++++++++++++++++++++++++++++++++++++'+listTempWrapper+'\n');
if(listEmpForDel.size() > 0) {
delete listEmpForDel;
lstProdWrapper= listTempWrapper;
} else {
ApexPages.addMessage(new ApexPages.Message(ApexPages.Severity.ERROR,'Select atleast one Account to delete'));
}
}
}
