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To sort data by the child business component, you must extract data from the master business component, store it, and re-sort it according to the values in the detail business component. The master and detail business component records are obtained through the master and detail datastreams.
In the Opportunities by Sales Rep (OPSLREP) standard report, each row of the opportunity query is processed before the data is formatted. Because data rows are transient objects, they are written into a temporary structure in memory as they are processed.
A global list or memory data buffer component can be used for this purpose. In the Opportunities by Sales Rep report, data rows from the Opportunities query are stored in a global list component. The AcList class, from which global list components are derived, is a smart array structure. A memory buffer (based on the AcMemoryBuffer class) is similar to a global list, but exhibits more complex behavior that is not required for most Siebel reports.
The RowList variable is derived from AcList, the AFC class designed to hold an ordered collection of objects. AcList is set up to function globally and has several methods that make it easy to manage lists. Methods for AcList variables are listed and described in Table 8.
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