[CAUSEWAY-1331] If return a google guava collection from an autoComplete or choices, then throws exception due to unsupported classes.

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Resolved
• Affects Version/s: 1.11.1
• Fix Version/s: 2.0.0-M1
• Component/s: Core
• Assignee: Andi Huber
• Reporter: Daniel Keir Haywood
• Created: 19/Mar/16 09:54
• Updated: 12/Aug/18 17:12
• Resolved: 12/Apr/18 20:19

Description

For example, this seemingly innocuous code:

    public List<SimpleObject> autoComplete(@MinLength(2) String search) {
        return
                    FluentIterable.from(listAll())
                    .filter(new Predicate<SimpleObject>() {
                        @Override public boolean apply(@Nullable final SimpleObject object) {
                            return object.getName().contains(search);
                        }
                    })
                    .toList();
    }

will fail. to make it work, the developer needs to copy to an ArrayList, eg:

    public List<SimpleObject> autoComplete(@MinLength(2) String search) {
        return
                Lists.newArrayList(
                    FluentIterable.from(listAll())
                    .filter(new Predicate<SimpleObject>() {
                        @Override public boolean apply(@Nullable final SimpleObject object) {
                            return object.getName().contains(search);
                        }
                    })
                    .toList()
                );
    }

One possible solution is for the framework to do this automatically, for List, Set, Collection.

Issue Links

• Is contained by: CAUSEWAY-1599 "Set" interface does not work as an action parameter's collection type