ADF Patterns for Forms Modernization

Transcription

1 NEOS, LLC ADF Patterns for Forms Modernization Rob Nocera, NEOS/Vgo Software NEOS/ Vgo Software, Inc

2 Outline Introduction Need for Modernization Nature of the Changes Mapping Forms to ADF Screen Flow Changes UI Component Changes Code Changes Summary Questions

3 Introduction Robert Nocera CTO NEOS / Vgo Software Started as a OO/Java Developer Founded NEOS / Vgo Software Many Oracle Forms Modernizations Upgrades Conversions to Java Conversions to ADF

4 Migrating to the Cloud Book Book Giveaway Authors: Tom Laszewski Prakash Nauduri Vgo Contributed Chapter

5 Disclaimer

6 Need for Modernization Aging Oracle Forms applications if it ain t broke, don t fix it Platform expires Hardware no longer supported System must be upgraded 6

7 User Acceptance User acceptance of UI changes Familiarity with sites like Facebook, Ebay, Yahoo, and Orbitz 7

8 The Web and Beyond Enterprise Applications

9 The Web and Beyond Don t be restricted by the current process Think out of the box 9

10 Nature of the Changes Foundation change from Forms to a modern java-oriented ADF 11g framework UI Changes just the tip of the iceberg 10

11 Architecture Changes Forms ADF Forms Client ADF Swing ADF Mobile ADF Rich Faces ADF Controller ADF Controller ADF Controller ADF Bindings ADF Data Control ADF View Object ADF Entity Database Database 11

12 Mapping Forms to ADF Form Task Flow Window / Canvas JSPX Block ADF View Trigger Java Method Groovy Expression 12

13 Mapping Forms to ADF Forms ADF Table Based Block Application Module Entry ADF View Database Table ADF Entity Database Table 13

14 Mapping Forms to ADF Forms Control Block ADF JSPX Binding Application Module ADF View (Transient) Control Block JSPX Backing Bean / Managed Bean 14

15 Common Forms Functionality Data Manipulation Search Data CRUD Create, Read, Update, and Delete Insert Search Update Delete 15

16 Forms Table-based Search/Edit 16

17 ADF Search/Edit 17

18 Taskflow 18

19 Forms Search-Edit 19

20 ADF Search Screen 20

21 ADF Search and Edit 21

22 Search/Edit ADF Taskflow 22

23 Tabs vs. Scrollbar Insufficient screen space in Forms Tabs solution Modern users expect scrolling Tabs can still be useful 23

24 Forms - Tabs 24

25 Example: Forms 25

26 Use of Tabs in ADF 26

27 LOVs vs. Dropdowns Lists of Values Dropdown Lists Same LOV Functionality Available 27

28 Static LOVs Good Idea to make static lists dynamic as above, but static lists are possible in ADF 28

29 Block Triggers Handle with care! 29

30 Post-Query Trigger VS View Looking up a description is best implemented using an LOV

31 Post-Query Triggers More Advanced Post-Query Triggers Methods that can be run declaratively in task flow Reoccurring patterns for reuse 31

32 Post-Query Triggers 32

33 Stored Procs and View Objects Stored Procedure Based Blocks Can build Entity and View Objects on them More complex than normal Entity Object Consider replacing with DB View If no updates required, less complex solution

34 Keystrokes/Menu vs. Buttons Keystrokes & Menu Items Buttons Forms ADF (Better usability) 34

35 Bounded Task Flows 35

36 Modifying Collection Queries 36

37 Design Considerations Keyboard Shortcuts Basic Search/Edit Patterns Transaction Handling Dirty Data Notifications User Closing Window List of Values Implementations Dropdown / Popup Mixed Case Data Entry 37

38 Take the Opportunity It's a Modernization not a Conversion Should not be one to one Some things need to change Look for Opportunity Take advantage of ADF features Consolidate and Re-use

39 Outline Summary Need for Modernization Nature of the Changes Screen Design UI Elements Code Changes Design Considerations 39

40 Questions Questions? For follow-up questions: Rob Nocera Blog: 40