Handling the context In Graphical Mapping

Hi Experts,

I need a solutions for the below issue

Source structure

LPLRecordset 0-----Unbounded

a

b

c

Tax

1

2

RecieverStructure

VendorPurchaseRecord 0---Unbounded

a

b

c

1

2

I need the output in different cases

Case1:

LPLRecordset

a

b

c

Tax

1

2

the output should come as

VendorPurchaseReord

a

b

c

d

1

again once again it should repeat

VendorPurchaseRecord

a

b

c

d

2

Case 2:

LPLRecordset

a

b

c

Tax

1

Output

-

---

VendorPurchaseRecord

a

b

c

1

Case 3

-

---

LPLRecordset

a

b

c

Output

-

---

VendorPurchaseRecord

a

b

c

I need a solution for this..in a graphical manner.

If any other informations is needed plz ask reply me back

Thanks & Regards

Himabindu