Hibernate - Declaring A Transient object in a pojo

Question

I have a pojo that is object A , of table TableA

TableA (int a1,int a2).

To fill the table I run a query that returns (int a1, int a2, boolean b3) (and runs multiple data checks)

b3 is not valid in TableA , but I still want to use the same pojo for both (it's a very big pojo , and it will be a major code duplication to have one just for the sake of the query)

I've declared in the pojo

@Transient
Boolean getB3() {..}
void setB3(Boolean b3) {..} 

And in the query I declared that I expect to get the b3 value:

<return> ...
<return-property name="b3" column="b3"/>
...
</return>

But Hibernate just ignores the parameter and never use "setB3()".. When I remove the @Transient , it works (and then fail when inserting to the table , naturally) - so all the names are correct

How can I fix this?

Thanks!

Solution

Ok, different idea. I guess since you marked the property as transient hibernate will neither load nor stor the property.

One solution could be to make two classes. One without the b property. And the second one extending from the first using the mappedSuperclass annotation.

Or you could try mapping it with some formula that just provides some default value (e.g. false). So for the 'normal' case you hibernate would use the formula, resulting in some default value, and for your special query you use whatever logic is in that query.

Comments

[kanso]

I didn't really get what you're saying , I'm sorry

[Jens Schauder]

I am saying basically the same as the other answer

[Jens Schauder]

whats so bad about 2 classes and an interface, as long as there is no duplication?