I'm trying to give "apex managed sharing" a test run. I've created a custom object (in my sandbox) and I'm trying to run through how to handle creating share objects.

Right now, I'm getting a compile error that appears to be a syntactical error, but I can't figure it out.

In the documentation Here, the description of how to handle doing this is pretty clear: MyCustomObject__Share. In the example, referencing their Job__c object is done as "Job__Share".

My object is called RFQ. The api name is RFQ__c, so I would expect the share name to be RFQ__Share. I'm getting the error: "Invalid Type: RFQ__Share" when trying to compile my code. Here's a snippet:

/*
* Trigger to test Apex Managed Sharing
*/
trigger AssignSharing on RFQ__c (after insert) {        
        List<RFQ__Share> shares = new List<RFQ__Share>();
	List<String> srNums = new List<String>();
	Map<String, Id> userIds = new Map<String, Id>();
	RFQ__Share shr = new RFQ__Share();
	
	for(RFQ__c rfq : trigger.new) {
		//for each comma separated SR Num in the SR Num field, add it to
		//the list of relevant SR nums
		for(String num : rfq.Sales_Responsible_Numbers__c.split(',',0)) {
			srNums.add(num);
		}
	}
	//SR Nums now holds all the Sales Responsible numbers that apply to the
	//rfq's being inserted, so we can query them from the database;
        //next step is to iterate through all the users who will be assigned a 
        //sharing rule (query result)

	//create a map of SR#s to Ids for quick reference later
	for(User u : [SELECT Id, Sales_Responsible_Number__c from User where Sales_Responsible_Number__c in :srNums]) {
		userIds.put(u.Sales_Responsible_Number__c, u.Id);
	}
	//userIds now maps each SR# to a user Id
	
	//for each new RFQ, assign the users that need to be given share priviledges
 for(RFQ__c rfq : trigger.new) {
		//for each sales responsible number
		for(String s :srNums) {
			//if this RFQ has that sales responsible number
			if(rfq.Sales_Responsible_Numbers__c.contains(s)) {
				//create a sharing rule that allows the corresponding user to be added
				shr.ParentId = rfq.Id;
				shr.AccessLevel = 'edit';
				shr.UserOrGroupId = userIds.get(s);
				shr.RowCause = Schema.rfq__Share.RowCause.SalesResponsible__c;
				shr.add(shares);
			}
		}//end for loops over srNums for this rfq
	}//end for (trigger.new)
	insert shares;
}//end trigger		

(Don't make fun of my code... it's for testing, not even compiled once yet, and not made to be efficient, I just want to get it to compile)

Any insight?