[COMMONSRDF-12] Graph to be Iterable

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.1.0
• Assignee: Stian Soiland-Reyes
• Reporter: Stian Soiland-Reyes
• Created: 10/Apr/15 09:34
• Updated: 21/Apr/16 09:01
• Resolved: 16/Apr/15 15:52

Description

A Graph is a collection of triples, yet it does not support the Iterable interface, and thus can't be used in a classic for-each loop like:

        for (Triple t : graph) {
            System.out.println(t);
        }

instead you are forced to use .getTriples() and either .sequential().forEach, or the awkward casting with ::iterator
http://stackoverflow.com/questions/20129762/why-does-streamt-not-implement-iterablet

Note that Stream is not Iterable, as it can only be iterated over once.. (I often find my self adding a function like iterable() to work around such cases).

My proposal is simply to add the interface Iterable and have a default implementation that calls getTriples().iterator().

It could be that there are other solutions that also work with the filtered getTriples() - e.g. some kind of Collector that is iterable?