Re: Behavior of ODMG personality and many-to-many relationships and default cache implementation

[Sean Dockery]

No takers?

Sean Dockery wrote:

Consider the following classes that represent a many-to-many relationship:

public class Category {

    private Collection products;

    public Collection getProducts() {
        return products;
    }
    public void setProducts(Collection newProducts) {
        products = newProducts;
    }
}

public class Products {

    private Collection categories;

    public Collection getCategories() {
        return categories;
    }
    public void setCategories(Collection newCategories) {
        categories = newCategories;
    }
}

If I have categories A and B, and products X and Y.  Initially category 
A contains only product X, and category B contains only product Y.

If I have fetched category A into the cache, then load product Y, and 
modify it thusly...

productY.getCategories().add(categoryA);

...and save it, the correct record is inserted into the indirection 
table describing the relationship between categoryA and productY. 
However, the cached copy of A is not updated with the new relationship. 
 If categoryA is purged from the cache and re-materialized, it contains 
both X and Y in its products collection.

Is this correct behavior or is this a bug?  If it is a bug, will it be 
fixed before 1.0 final is released?

Thanks...


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