Hello, in the onFlushDirty event, in the propertyNames parameter I find a property that it's not mapped in my entity: is a ManyToOne referenced with referencedColumnName, and it has the full entity name (with namespace) in it.

Example:

Entity A:
Other properties here...

Entity B:
@ManyToOne @JoinColumn(name = "B_COLUMN", referencedColumnName="A_OTHER_COLUMN") A a;

While onFlushDirty on A is called, I found something like B_A property, but there is no such property in A.

Is it the correct behaviour? If yes, why?

Thank you.

After some debugging, I found out that those are called "Synthetic Properties", and they are generated during the second phase of annotation mapping. Plus, they "should" always begin with an underscore (_).

In my use case, I can just skip the properties beginning with the underscore (I'm simply copying my properties into a new object, and I don't think those should be copied anyway).

Is my theory correct?