/** Make a new Query object that is exactly like the old. Too bad Query isn't Cloneable. */
protected com.google.appengine.api.datastore.Query cloneRawQuery(
com.google.appengine.api.datastore.Query orig) {
com.google.appengine.api.datastore.Query copy =
new com.google.appengine.api.datastore.Query(orig.getKind(), orig.getAncestor());
for (FilterPredicate filter : orig.getFilterPredicates())
copy.addFilter(filter.getPropertyName(), filter.getOperator(), filter.getValue());
for (SortPredicate sort : orig.getSortPredicates())
copy.addSort(sort.getPropertyName(), sort.getDirection());
// This should be impossible but who knows what might happen in the future
if (orig.isKeysOnly()) copy.setKeysOnly();
return copy;
}
/**
* Get an iterator over the keys. Not part of the public api, but used by QueryKeysImpl. Assumes
* that setKeysOnly() has already been set.
*/
public QueryResultIterable<Key<T>> keysIterable() {
assert actual.isKeysOnly();
return loader.createQueryEngine().queryKeysOnly(this.getActualQuery(), this.fetchOptions());
}