Now I am using GDataI for Java and I tried following code to get Google
document list
DocumentListFeed tempFeed;
tempFeed = myService.getFeed(feedUrl, DocumentListFeed.class);
After I confirmed this code work without problem, I change code as
following to be able to feed more than one page entry, but this code
create Null pointer Exception.
DocumentListFeed tempFeed;
tempFeed = myService.getFeed(feedUrl, DocumentListFeed.class);
resultFeed.getEntries().addAll(tempFeed.getEntries());
while((tempFeed.getNextLink() != null) &&
(tempFeed.getEntries().size()>0));
{
tempFeed = myService.getFeed(new
URL(tempFeed.getNextLink().getHref()),DocumentListFeed.class);
resultFeed.getEntries().addAll(tempFeed.getEntries());
}
I confirmed that “tempFeed.getNextLink()” is null. But this is a
condition to repeat while. I could not understand why this code fail
and I found suspicious info which related to Java while statement bug
in a following URL. Is this real bug?
http://java.decompiler.free.fr/?q=node/263 after I get info, I changed
my code as following and confirmed this code works without error.
DocumentListFeed tempFeed = this.resultDocListFeed;
DocumentListFeed resultFeed = new DocumentListFeed();
boolean okToFeed = true;
do
{
if(tempFeed != null && tempFeed.getEntries() != null)
{
if(tempFeed.getNextLink() != null && tempFeed.getEntries().size()>0)
{
tempFeed = this.docServiceClient.getFeed(new
URL(tempFeed.getNextLink().getHref()),DocumentListFeed.class);
resultFeed.getEntries().addAll(tempFeed.getEntries());
}
else
{
okToFeed = false;
}
}
else
{
okToFeed = false;
}
}while(okToFeed == true);
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