QueryData generate(QueryContext& context) override {
if (context.isCached("awesome_data")) {
// There is cache entry for awesome data.
return {{{"data", "more_awesome_data"}}};
} else {
Row r = {{"data", "awesome_data"}};
context.setCache("awesome_data", r);
return {r};
}
}
void genHashForFile(const std::string& path,
const std::string& dir,
QueryContext& context,
QueryData& results) {
// Must provide the path, filename, directory separate from boost path->string
// helpers to match any explicit (query-parsed) predicate constraints.
Row r;
if (context.isCached(path)) {
r = context.getCache(path);
} else {
auto hashes = hashMultiFromFile(
HASH_TYPE_MD5 | HASH_TYPE_SHA1 | HASH_TYPE_SHA256, path);
r["path"] = path;
r["directory"] = dir;
r["md5"] = std::move(hashes.md5);
r["sha1"] = std::move(hashes.sha1);
r["sha256"] = std::move(hashes.sha256);
context.setCache(path, r);
}
results.push_back(r);
}
