1. What is custom method?
You can create custom method and attach it to defined model or view. Using this elements, you can connect defined xml to JAVA code.
To create custom method first you must create service, then implement one or more custom methods. Then you insert reference to created method in xml files.
2. Create custom methods service
2.1. service structure
Custom methods service is basicly normal JAVA class. Only additional element is Spring '@Service' annotation.
import org.springframework.stereotype.Service;
@Service
public class ClassName {
// CLASS BODY
}
2.2. additional services access
In created service you can access many additional services that helps you manipulate data or view.
Access to outside service are made by Spring '@Autowired' annotation.
import org.springframework.beans.factory.annotation.Autowired;
...
@Autowired
private ServiceType setviceName;
2.3. additional services
2.3.1. DataDefinitionService
TODO
2.3.2. TranslationService
TODO
2.3.3. SecurityService
TODO
3. custom methods
3.1. Custom validators
Custom validator is used by model to validate entities.
Custom validator function has structure:
public boolean validatorMethodName(final DataDefinition dataDefinition, final Entity entity) {
// VALIDATOR METHOD BODY
}
Where
- validatorMethodName - name of validator method
- dataDefinition - dataDefinition of validated entity
- entity - entity to validate
This method should return true if validation was successfull and false otherwise.
When validation was unsuccessfull you can also add validation message to entity field using construction:
entity.addError(dataDefinition.getField("fieldName"), "validationMessage");
Where
- fieldName - name of entity model field
- validationMessage - validation message
To attach created validator method to model xml file see 'model custom validators' section.
2.2. Model hooks
Model hooks are methods that is executed on specific model actions (defined in xml file). Model hook method has structure:
public void modelHookMethodName(final DataDefinition dataDefinition, final Entity entity) {
// MODEL HOOK BODY
}
Where
- modelHookMethodName - name of model hook method
- dataDefinition - dataDefinition of hook event entity
- entity - hook event entity
customEventHooks
2.3. View hooks
TODO
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2.4. View listeners
TODO
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3. Example
TODO