func WalkViewInBatches(result chan cb.ViewRow, errs chan errors.Error, bucket *cb.Bucket,
ddoc string, view string, options map[string]interface{}, batchSize int64, limit int64) {
if limit != 0 && limit < batchSize {
batchSize = limit
}
defer close(result)
defer close(errs)
defer func() {
r := recover()
if r != nil {
logging.Errorf("View Walking Panic: %v\n%s", r, debug.Stack())
errs <- errors.NewCbViewsAccessError(nil, "Panic In walking view "+view)
}
}()
options["limit"] = batchSize + 1
numRead := int64(0)
ok := true
for ok {
logURL, err := bucket.ViewURL(ddoc, view, options)
if err == nil {
logging.Infof("Request View: %v", logURL)
}
vres, err := bucket.View(ddoc, view, options)
if err != nil {
errs <- errors.NewCbViewsAccessError(err, "View name "+view)
return
}
for i, row := range vres.Rows {
if int64(i) < batchSize {
// dont process the last row, its just used to see if we
// need to continue processing
result <- row
numRead += 1
}
}
if (int64(len(vres.Rows)) > batchSize) && (limit == 0 || (limit != 0 && numRead < limit)) {
// prepare for next run
skey := vres.Rows[batchSize].Key
skeydocid := vres.Rows[batchSize].ID
options["startkey"] = skey
options["startkey_docid"] = cb.DocID(skeydocid)
} else {
// stop
ok = false
}
}
}
func ViewTotalRows(bucket *cb.Bucket, ddoc string, view string, options map[string]interface{}) (int64, errors.Error) {
options["limit"] = 0
logURL, err := bucket.ViewURL(ddoc, view, options)
if err == nil {
logging.Infof("Request View: %v", logURL)
}
vres, err := bucket.View(ddoc, view, options)
if err != nil {
return 0, errors.NewCbViewsAccessError(err, "View Name"+view)
}
return int64(vres.TotalRows), nil
}
func ViewTotalRows(bucket *cb.Bucket, ddoc string, view string, options map[string]interface{}) (int64, query.Error) {
options["limit"] = 0
logURL, err := bucket.ViewURL(ddoc, view, options)
if err == nil {
clog.To(NETWORK_CHANNEL, "Request View: %v", logURL)
}
vres, err := bucket.View(ddoc, view, options)
if err != nil {
return 0, query.NewError(err, "Unable to access view")
}
return int64(vres.TotalRows), nil
}