Changes API with Cloudant : changes.hasNext() is true but changes.next() is null

[Foucauld Degeorges]

Hello,

I am using the following code from the Changes API documentation :

Changes changes = dbClient.changes()

.includeDocs(true)

.since(since)

.heartBeat(30000)

.continuousChanges();

while (changes.hasNext()) { 

ChangesResult.Row feed = changes.next();

String docId = feed.getId();
System.out.println(docID);

}

At first, the pre-existing changes are printed fine.
But when a new change happens while the thread is running, feed.getId() throws a NullPointerException because feed is null.

So this means changes.next() returned null right after changes.hasNext() returned true. That doesn't seem logical.

Is this a known bug, or am I doing something wrong ?

Thanks

Foucauld

PS : My database is an IBM Cloudant based on CouchDB, it it supposed to be 100% CouchDB-compatible and until now all other APIs work perfectly.

[Ahmed Yehia]

This issue happens when Cloudant response returns an empty feed.

Fixed in a new release 0.1.8

On Friday, April 24, 2015 at 5:27:23 PM UTC+3, Foucauld Degeorges wrote:

Hello,

I am using the following code from a Changes API documentation :