A Better Universe in Java

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A Better Universe
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1 Using the Island Resorts Marketing universe, set the Classes and Objects pane to display the condition objects Position your cursor in the class where you want the new object to appear in this example, Customer 2 Click the Insert Condition button on the toolbar or select Insert | Condition from the pull-down menus 3 In the Name box, enter Platinum Customer 4 In the Description box, enter some meaningful help text, such as: A platinum customer is a predefined list of customer codes with revenues of $100,000 or more in any given year 5 In the Where box, click >> to call up SQL Editor 6 At this point, you could manually enter the WHERE statement shown in the next screen These step-by-step instructions use point and click to build the condition object Under Classes and Objects, scroll to the class that contains the object you want to use for the WHERE clause In this example, click the + next to Customer 7 For response time reasons, you want the WHERE clause on the indexed Customer Id object rather than the nonindexed Customer Double-click Customer Id to have it added to the WHERE statement Note that Designer uses the @Select function
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NOTE The Island Resorts Marketing universe may or may not have Customer ID as an object,
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depending upon whether your universe was newly installed with XI Release 2 or imported from a previous version If you do not see the object within Classes and Objects, then select the appropriate field from Tables and Columns and skip to Step 9
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If you select an object, Designer uses its @Select function
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Advanced Objects
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Click to view SQL syntax
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Select the RDBMS column or the universe object name
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8 To view the SQL syntax, click the Show Object SQL check box, shown next Notice that Designer grays the SQL statement box and does not allow you to edit the statement
SQL syntax
9 In the Operators box, scroll to IN and double-click to add this to the SQL statement 10 You do not need to transform your values, so you will not use any functions Manually enter the list of customer IDs (106,502,104,102,506,402,406) generated by the preceding report Because Customer Id is a numeric object, it does not require single quotes around each condition value 11 Always click Parse to test the validity of the SQL statement
Part II:
A Better Universe
12 Click OK to close the SQL Editor The condition object properties should now look like the illustration at right: 13 Click OK to close the Object Properties screen 14 Click Save to save the universe changes If necessary, export the changes to the repository with File | Export When users build a query, they can now add the condition object to the condition panel
Condition Object with Subquery
The preceding object works perfectly fine and will provide the best query performance However, what if your top customers change from quarter to quarter or year to year In this case, you could add a subquery to the condition object so that the list of customers with a certain revenue level is generated dynamically Subqueries are slow, so use them with care The following SQL would be used in the Where pane to create such an object:
Customercust_id in ( SELECT Customercust_id FROM Customer, Sales, Invoice_Line, Service WHERE ( Customercust_id=Salescust_id ) AND ( Salesinv_id=Invoice_Lineinv_id ) AND ( Invoice_Lineservice_id=Serviceservice_id ) GROUP BY Customerlast_name, Customercust_id, 'FY'+Format(Salesinvoice_date,'YYYY') HAVING sum(Invoice_Linedays * Invoice_Linenb_guests * Serviceprice)
100000)
TIP Consider using @Prompt to allow users to specify the revenue amount dynamically when they
use this object
Time Conditions
Condition objects involving time functions are popular Additionally, BusinessObjects XI does not allow users to add calculations within the query panel, so condition objects become the only way in which users can create rolling reports The following objects use SYSDATE, which returns the current date according to the RDBMS
11:
Advanced Objects
The following SQL creates a One Year Ago condition object The comparison column is in a date format Because SYSDATE is a date column including the day of the year, you subtract 365 days to arrive at the same date last year
TIMESEND_OF_CAL_YEAR=SYSDATE-365
If the comparison column is not in a date format but is numeric, then you must also convert the SYSDATE calculation to numeric with TO_NUMBER The following SQL creates a Last Year object in which the year is four digits To extract only the four digits, use the TO_ CHAR function
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