Hi,
I'm doing an all docs query without and with a limit. Basically I'm looping
through all my documents one batch at a time, but I'd like to find out how
many records there are in total that match the query first before I break
it up into batches. You know, so I can have a proper progress indicator
showing how far we've gone.
So I have this code so far:
NSError *queryError = nil;
CBLQuery *docsQuery = [self.databaseDocument.backgroundDatabase
createAllDocumentsQuery];
docsQuery.allDocsMode = kCBLBySequence;
docsQuery.startKey = @(sequence.integerValue + 1);
// Get the count of records
docsQuery.mapOnly = NO;
CBLQueryRow *rowCountQueryRow = [[docsQuery run: &queryError] nextRow];
NSNumber *fullRecordCount = rowCountQueryRow.value;
NSLog(@"Full record count: %@", fullRecordCount);
// Now fetch all the documents
docsQuery.mapOnly = YES;
if (limit) {
docsQuery.limit = limit;
}
CBLQueryEnumerator *docsEnumerator = [docsQuery run: &queryError];
I know the rowCountQueryRow.value won't get me the count as I've got it
above, but that's the point of this email.
How do I get the count first when mapOnly = NO? There's no reduce function
on an all docs query as far as I know.
Thanks,
Brendan
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