void CanonicalQuery::generateCacheKey(void) {
mongoutils::str::stream ss;
encodePlanCacheKeyTree(_root.get(), &ss);
encodePlanCacheKeySort(_pq->getSort(), &ss);
encodePlanCacheKeyProj(_pq->getProj(), &ss);
_cacheKey = ss;
}
PlanCacheKey PlanCache::computeKey(const CanonicalQuery& cq) const {
str::stream ss;
encodePlanCacheKeyTree(cq.root(), &ss);
encodePlanCacheKeySort(cq.getParsed().getSort(), &ss);
encodePlanCacheKeyProj(cq.getParsed().getProj(), &ss);
return ss;
}
/**
* Cache key is a string-ified combination of the query and sort obfuscated
* for minimal user comprehension.
*/
PlanCacheKey PlanCache::getPlanCacheKey(const CanonicalQuery& query) {
stringstream ss;
encodePlanCacheKeyTree(query.root(), &ss);
encodePlanCacheKeySort(query.getParsed().getSort(), &ss);
encodePlanCacheKeyProj(query.getParsed().getProj(), &ss);
PlanCacheKey key(ss.str());
return key;
}