Issue #154 : custom JsonView annotations support

[bclozel]

@bmeurant is preparing a PR regarding @Transactional issues. Actually, the default strategy is required=true and readOnly=false; we were kind of used to readOnly=true because of GenericService in RESThub 1.x.

Could you delete some parts of your PR? I'll point the exact lines to make this easier.

[sdeleuze]

Additional informations, this functionality should allow to fix serialization issues for children-parent when we were using previously @JsonIgnore or @JsonBackReference. Another use case is that it allows us to use again lazy loading + OpenSessionInView filter.

Here is a code sample showing these 2 improvements (not tested yet, so there may be issues) :

public class Library {
    @JsonView(BookListView.class)
     private List<Book> books;
}

public class Book {

    @ManyToOne(fetch = FetchType.LAZY)
     private Library library;

    @JsonView(BookListView.class)
     private String name;

    @OneToMany(fetch = FetchType.LAZY)
    private List<Page> pages;
}

@RequestMapping("books")
@ResponseView(BookListView.class)
public @ResponseBody List<Book> getBooks()
{
    return data;
}

@RequestMapping("{id}")
public @ResponseBody Book getBook(@PathVariable("id") Integer id)
{
    return data.get(id - 1);
}

[bclozel]

great!