Method find

src/backend/common/FFTPlanCache.hpp:45–56

iterates through plan cache from front to back of the cache(queue) A valid shared_ptr of the plan in the cache is returned if found, and empty share_ptr otherwise.

    // A valid shared_ptr of the plan in the cache is returned
    // if found, and empty share_ptr otherwise.
    plan_t find(const std::string& key) const {
        std::shared_ptr<P> res;

        for (unsigned i = 0; i < mCache.size(); ++i) {
            if (key == mCache[i].first) {
                res = mCache[i].second;
                break;
            }
        }

        return res;
    }

    // pushes plan to the front of cache(queue)
    void push(const std::string key, plan_t plan) {