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Fig. 8.9 Decomposition to direct data transfer

Fig. 8.10 Four XQuery expressions for a multiple instance task

variables, and output parameters to map task variables onto output net variables.
Figure 8.9 shows the direct data mapping for task Approve Purchase Order.
Besides input and output parameters, multiple instance tasks need further infor-
mation for data manipulation. This information is specified via four XQuery expres-
sions. An example of these expressions is provided in Fig. 8.10, which refers to the
multiple instance task Log Trackpoint Order Entry in the Order Fulfillment example