formatByExample
You use this function if you need to synchronize two queues of equal length with reference to their context change. The mapping runtime takes the values from the first queue, and the context change from the second queue. If the two inbound queues do not have the same number of values, the mapping runtime triggers an exception.
Inbound Queues and Result Queue (Example)
|
1. Inbound Queue |
A1 |
A2 |
A3 |
B1 |
B2 |
C1 |
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|
2. Inbound Queue |
W1 |
X1 |
X2 |
X3 |
Y1 |
Z1 |
||||||||
|
Result Queue |
A1 |
A2 |
A3 |
B1 |
B2 |
C1 |
In the example above, both the first and second inbound queues have six values (empty contexts are not counted). The second inbound queue dictates the structure of the result queue. Empty contexts are also included in this structure. The mapping runtime replaces the values from the second queue with the corresponding values from the first queue.