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All the implemented custom column validators must be returned by the getColumnValidators() method of the plugin class implementing the IColumnValidatorProvider interface, so that they become available within Servoy Developer.

With 2020.06 there is a IColumnValidator2 which extends IColumnValidator which adds public void validate(Map<String, String> props, Object value, String dataprovider, IValidationObject validationObject, Object state); method that works with the new validation framework: Data/Record/Column validation

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.

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