Clone an opportunity and its lineitems programatically in salesforce - salesforce

Question

I have a scenario where i need to clone a opportunity and its lineitems when the contract End date is today. The opp line item has field called Product_Family_c. i would have to clone only those opp whose lineitems have renewaltype_c as monthly.
I am stuck at how i can clone over the oli items and assign the new oppty ids to the oli items.
todays=date.today();
system.debug('todays'+todays);
for(opportunity o:[select Auto_Renew__c,Contract_lenght_in_months__c,Contract_End_Date__c,id from opportunity where Auto_Renew__c='Yes' and Contract_End_Date__c =:todays ])
{
SetOppId.add(o.id);
MapOpp.put(o.id,o);
}
system.debug('SetOppId'+SetOppId);
system.debug('MapOpp'+MapOpp);
for(OpportunityLineItem oli:[select OpportunityId from OpportunityLineItem where Product_Family__c='Monthly' and OpportunityId in :SetOppId])
{
SetOppIdtoRenew.add(oli.OpportunityId);
Mapoli.put(oli.id,oli);
}
system.debug('SetOppIdtoRenew'+SetOppIdtoRenew);
for(id a:SetOppIdtoRenew)
{
//MapOpp.get(a).Contract_End_Date__c=MapOpp.get(a).Contract_End_Date__c.addDays(1);
//MapOpp.get(a).Contract_End_Date__c=MapOpp.get(a).Contract_End_Date__c.addMonths(integer.valueof(MapOpp.get(a).Contract_lenght_in_months__c));
Lstopp.add(new opportunity(name=MapOpp.get(a).name+' renewal '+string.valueof(date.today()),
Contract_lenght_in_months__c=MapOpp.get(a).Contract_lenght_in_months__c,
Contract_End_Date__c=MapOpp.get(a).Contract_End_Date__c.addMonths(integer.valueof(MapOpp.get(a).Contract_lenght_in_months__c))+1,
StageName=MapOpp.get(a).StageName,
CloseDate=MapOpp.get(a).CloseDate
// ,<fieldname>=MapOpp.get(a).<fieldname>... for all the fields you ned to copy over
));
}
system.debug('Lstopp'+Lstopp);
insert Lstopp;

Answer 1

You were thinking in the right direction. However, before you assign OppID to line item you must insert the opportunity. I imagine this kind of breaks your transactional control, but you can always use Database save points to make the whole operation atomic.
For example:
SavePoint sp = Database.setSavepoint();
try {
upsert newOpportunities;
// now create line items and assign IDs
}
catch (Exception ex) {
Database.rollback(sp);
// cleanup
}
In order to map old opportunities to new ones, you need a Map<ID, Opportunity> and a List and fill them with the same new opportunities to eb able to reuse new IDs in a mapping manner (I used pseudo code, if you have trouble interpreting it, let me know)
foreach(oldopp) {
newopp = clone oldopp;
list.add(newopp);
map.put(oldopp.id, newopp);
}
upsert list;
// now we have new oppids for cloned items, use them to map
foreach(oldlineitem) {
newlineitem = clone oldlineitem;
newlineitem.OpportunityId = map.get(oldlineitem.OpportunityId).Id;
...
}
upsert listofnewlineitems;
}