Column converters as well as validators can be provided via client plugins.

Column Converters

In order to build a column converter, your plugin class implementing the IClientPlugin interface (see Implement the plugin interface) also needs to implement the interface IColumnConverterProvider to produce ITypedColumnConverter instances in the getColumnConverters() method. See API docs.

...

The implemented column converters returned by the getColumnConverters() method of the plugin class implementing the IColumnConverterProvider interface, will be checked by the plugin manager which will add them to the list of Servoy column converters.

Column Validators

In order to build a column validator, your plugin class implementing the IClientPlugin interface (see Implement the plugin interface) also needs to implement the interface IColumnValidatorProvider to produce IColumnValidator instances in the getColumnValidators() method. See API docs.

...

The implemented column validators returned by the getColumnValidators() method of the plugin class implementing the IColumnValidatorProvider interface, will be checked by the plugin manager which will add them to the list of Servoy column validators.

Example

This is an example of validating the size of a column of type TEXT or MEDIA. The validation rule is that the size must be lower or equal to the value given by the developer by setting the length property in the Validation tab.

...