To explain how lazy loading work in Adichatz, have a look on this diagram: An Adress depends on one and only one City. A City could have zero or several Adresses. A City depends on one and only one Country. POJOs corresponding to this schema can be consult here.

With Hibernate, we can retrieve adress number 1 by using:

Adress address = (Adress) entityManager.find(Adress.class,1);

If I try something like that:

String cityName = address.getCity().getCity();

I will obtain a LazyIntializationException. That is normal because the fetch points to FetchType.LAZY in the ManyToOne relationship, so the city field loaded by Hibernate is only a proxy. So you have to manage this issue.

• Copy CustomerDIGENERATED.axml file to CustomerDI.axml which will become the reference for generated code.
• In the city field replace convertModelToTarget element as following:

<refText property="city" style="SWT.BORDER | AdiSWT.FIND_BUTTON | AdiSWT.DELETE_BUTTON" id="city">
    <convertModelToTarget>return &quot;City:&quot; + #FV().city + &quot; - Country:&quot; + #FV().Country.country;</convertModelToTarget>
</refText>

The displayed value would be in the generated JAVA class:

return "City:" + ((Address) value).getCity().getCity() + " - Country:" + ((Address) value).getCity().getCountry().getCountry();

The bean adress is wrapped into an Entity which is managed by the Application Data Cache. Adichatz associates a “decision tree” with each Entity. In this case the decision tree will be like this: Entity Adress number 1

• + city
  • - city
  • + Country
    • - country

If in another editor, you want to display the number of adresses for the city, the decision tree becomes: Entity Adress number 1

• + city
  • - name
  • - adresses
  • + Country
    • - country