Cost-Based Optimization of Integration Flows - Datenbanken ...

2.4 Use Cases
Receive (o1)
[service: s3, out: msg1]
Selection (o2)
[in: msg1, out: msg2]
Fork (o1)
Selection (o3)
[in: msg2, out: msg3]
Assign (o2)
[out: msg1]
Assign (o4)
[out: msg3]
Assign (o6)
[out: msg5]
Selection (o4)
[in: msg3, out: msg4]
Invoke (o3)
[service s3, in: msg1, out: msg2]
Invoke (o5)
[service s4, in: msg3, out: msg4]
Invoke (o7)
[service s5, in: msg5, out: msg6]
@type='SCM'
Switch (o5)
[in: msg4]
@type='MAT'
Setoperation (o8)
[in: msg2,msg4, out: msg7]
UNION DISTINCT
Translation (o6)
[in: msg4, out: msg5]
Translation (o7)
[in: msg4, out: msg5]
Setoperation (o9)
[in: msg7,msg6, out: msg8]
UNION DISTINCT
Assign (o8)
[in: msg5, out: msg6]
Assign (o10)
[in: msg8, out: msg9]
Invoke (o9)
[service s6, in: msg6]
Invoke (o11)
[service s6, in: msg9]
(a) Plan P 5
(b) Plan P 6
Receive (o1)
[service: s3, out: msg1]
Fork (o2)
Assign (o1)
[out: msg1]
Assign (o3)
[in: msg1, out: msg2]
Assign (o6)
[in: msg1, out: msg5]
Assign (o9)
[in: msg1, out: msg8]
Assign (o11)
[in: msg1, out: msg10]
Invoke (o2)
[service s6, in: msg1]
Invoke (o4)
[service s1, in: msg2, out: msg3]
Invoke (o7)
[service s2, in: msg5, out: msg6]
Invoke (o10)
[service s4, in: msg8, out: msg9]
Invoke (o12)
[service s5, in: msg10, out: msg11]
Assign (o3)
[out: msg2]
Translation (o5)
[in: msg3, out: msg4]
Translation (o8)
[in: msg6, out: msg7]
Translation (o13)
[in: msg11, out: msg12]
Assign (o4)
[out: msg3]
Join (o14)
[in: msg1,msg9, out: msg13]
Join (o15)
[in: msg13,msg12, out: msg14]
Join (o16)
[in: msg14,msg4, out: msg15]
Join (o17)
[in: msg15,msg7, out: msg16]
Assign (o18)
[in: msg16, out: msg17]
Invoke (o19)
[service s6, in: msg17]
INNER
INNER
INNER
INNER
Invoke (o5)
[service s6, in: msg2, out: msg4]
Invoke (o6)
[service s6, in: msg3, out: msg5]
Assign (o7)
[in: msg4, out: msg6]
Assign (o8)
[in: msg5, out: msg7]
Invoke (o9)
[service s7, in: msg6]
Invoke (o10)
[service s7, in: msg7]
(c) Plan P 7
(d) Plan P 8
Figure 2.11: Example Vertical Integration Flows
the collected orders information. Furthermore, two queries are prepared in order to read
orders and orderline information from the data warehouse. After those data sets have been
extracted from the data warehouse, two Invoke operators are used in order to load the data
into the DSS.
To summarize, the plans P 5 and P 7 are data-driven integration flows, while the plans
P 6 and P 8 are scheduled and thus, time-based initiated integration flows. Only plan P 5 is
initiated synchronously, while the plans P 6 , P 7 , and P 8 are all initiated asynchronously.
We will use these eight integration flows from the use cases of horizontal and vertical
integration as running examples throughout the whole thesis. All of these flows exhibit
different characteristics that can be exploited for optimization purposes.
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