Apache OFBiz Developer Manual The Apache OFBiz Project Version Trunk Table of Contents 1. Introduction. 2 1.1. Main systems . 2 1.2. Components . 2 1.3. Example workflow . 3 1.3.1. User enters URL . 4 1.3.2. Control servlet takes over . 4 1.3.3. Widget rendered . 5 1.4. The Apache OFBiz documentation system . 6 1.4.1. Overview . 6 1.4.2. Contributing a new help screen, a few steps.. 7 1.4.3. Internationalization of the help system . 7 2. Web Framework . 8 3. Web Applications . 9 3.1. Cross-domains Single Sign On (SSO). 9 3.2. Control Servlet. 10 3.2.1. Requests . 10 3.2.2. Views . 10 4. The Entity Engine. 11 4.1. Entity Engine guide. 11 4.2. Entity Engine Configuration Guide. 11 4.3. Entity overview. 11 4.4. Entities. 11 4.4.1. Standard Entities. 11 4.4.2. View Entities . 11 4.4.3. Extended Entities . 11 4.4.4. Dynamic View Entities. 11 4.5. XML Data . 11 4.6. The OFBiz Datafiles . 11 4.6.1. Intoduction . 11 4.6.2. Definitions . 12 4.6.3. How to use the "Work With Data Files" screen in the Webtools application . 12 4.6.4. Examples. 12 4.7. Entity engine configuration . 14 4.8. Supported databases . 14 4.9. Data Model Changes. 14 4.9.1. Changes with OFBiz Trunk (Upcoming Branch) . 14 4.9.2. Changes with OFBiz 17 . 15 4.9.3. Changes between OFBiz 9 to OFBiz 16. 16 5. Service Engine. 29 5.1. Declaration and Implementation . 29 5.2. Supported languages . 29 5.3. Transaction management. 29 5.4. Web services . 29 6. Widget System. 30 6.1. Screen Widget . 30 6.1.1. Decoration Pattern . 30 6.2. Form Widget . 30 6.3. Menu Widget . 30 6.4. Tree Widget . 30 6.5. Portal Widget. 30 6.6. Platform Specific Code . 30 6.7. Apache OFBiz Themes . 30 6.7.1..