Filtering and Sorting

Added Features in alpha 8

• Added a filter type to Query and DataProvider
• Added setFilter method to DataProvider for setting a default filter that is always applied
• Specific DataProviders to support appendFilter and combineFilters to allow chaining of filters
• Listing Components can now define their own filter type
• Added DataProvider methods for converting filter types
• In-memory sorting provided in Query, DataProviders are now stateless.
• DataProviders implement sortingBy which returns a wrapper through which changed to sorting and filtering are done

Reference implementations:

• Spring data
• Pure JDBC