openxava / documentation / Course section: Basic business logic

• Lesson 9: Java properties
• Lesson 10: Calculated properties
• Lesson 11: @DefaultValueCalculator in collections
• Lesson 12: @Calculation and collections totals
• Lesson 13: @DefaultValueCalculator from file
• Lesson 14: Manual schema evolution
• Lesson 15: Multi user default value calculation
• Lesson 16: Synchronize persistent and computed propierties
• Lesson 17: Logic from database