Hello everyone.
I work with vaadin since 4 month and I have faced many problems. Because of the delays, I “bypassed” some good practices. But now I have some time, and I want to improve my skills with vaadin.
My current problem is the following :
I have a table, in this table I want to put some bean form a database :
Bean :
public class Year {
private Long id;
private Integer number;
//Constructor, getters and setters, other attributes ...At starting, I retrieve all the beans from database and put them into a table. The problem is that beans look like that :
core.entity.Year@27787775
I found that writing a custom “toString” method in my bean “Year” results with good names in the table, but I know that this is not the way it should be done.
So, my first question is :
- Is it possible to put a bean in a table with just one column which is a kind of “alias” for the bean?
Secondly I faced some problem when I want to retrieve the bean by clicking it in the table. Actually I am doing this like that :
Item item = tableYear.getItem(tableYear.getValue());
Year year = (Year) item;
But I have this exception :
java.lang.ClassCastException: com.vaadin.data.util.IndexedContainer$IndexedContainerItem cannot be cast to core.entity.Year
In fact, I just want to put a bean in a table and retrieve it by clicking on it. (I know how to do it the wrong way)
I sure this is possible but I am kind of lost right now.
Thanks for your help !!