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authorDouglas Rumbaugh <dbr4@psu.edu>2023-11-06 15:18:53 -0500
committerDouglas Rumbaugh <dbr4@psu.edu>2023-11-06 15:18:53 -0500
commite02742b07540dd5a9bcbb44dae14856bf10955ed (patch)
tree839533401683d6ae875adbf7af2ee4c0d0f5e483 /include/shard/TrieSpline.h
parent0b723322a611de83872dd83b55d2e10e8886a283 (diff)
downloaddynamic-extension-e02742b07540dd5a9bcbb44dae14856bf10955ed.tar.gz
Refactoring progress
Diffstat (limited to 'include/shard/TrieSpline.h')
-rw-r--r--include/shard/TrieSpline.h184
1 files changed, 2 insertions, 182 deletions
diff --git a/include/shard/TrieSpline.h b/include/shard/TrieSpline.h
index a784a38..fdf8edb 100644
--- a/include/shard/TrieSpline.h
+++ b/include/shard/TrieSpline.h
@@ -30,32 +30,6 @@ using psudb::Alias;
namespace de {
-template <RecordInterface R>
-struct ts_range_query_parms {
- decltype(R::key) lower_bound;
- decltype(R::key) upper_bound;
-};
-
-template <RecordInterface R>
-class TrieSplineRangeQuery;
-
-template <RecordInterface R>
-struct TrieSplineState {
- size_t start_idx;
- size_t stop_idx;
-};
-
-template <RecordInterface R>
-struct TrieSplineBufferState {
- size_t cutoff;
- Alias* alias;
-
- ~TrieSplineBufferState() {
- delete alias;
- }
-
-};
-
template <RecordInterface R, size_t E=1024>
class TrieSpline {
private:
@@ -63,10 +37,6 @@ private:
typedef decltype(R::value) V;
public:
-
- // FIXME: there has to be a better way to do this
- friend class TrieSplineRangeQuery<R>;
-
TrieSpline(MutableBuffer<R>* buffer)
: m_reccnt(0), m_tombstone_cnt(0) {
@@ -254,8 +224,6 @@ public:
return 0;
}
-private:
-
size_t get_lower_bound(const K& key) const {
auto bound = m_ts.GetSearchBound(key);
size_t idx = bound.begin;
@@ -293,6 +261,8 @@ private:
return (m_data[idx].rec.key <= key) ? idx : m_reccnt;
}
+private:
+
Wrapped<R>* m_data;
size_t m_reccnt;
size_t m_tombstone_cnt;
@@ -302,154 +272,4 @@ private:
ts::TrieSpline<K> m_ts;
BloomFilter<R> *m_bf;
};
-
-
-template <RecordInterface R>
-class TrieSplineRangeQuery {
-public:
- constexpr static bool EARLY_ABORT=false;
- constexpr static bool SKIP_DELETE_FILTER=true;
-
- static void *get_query_state(TrieSpline<R> *ts, void *parms) {
- auto res = new TrieSplineState<R>();
- auto p = (ts_range_query_parms<R> *) parms;
-
- res->start_idx = ts->get_lower_bound(p->lower_bound);
- res->stop_idx = ts->get_record_count();
-
- return res;
- }
-
- static void* get_buffer_query_state(MutableBuffer<R> *buffer, void *parms) {
- auto res = new TrieSplineBufferState<R>();
- res->cutoff = buffer->get_record_count();
-
- return res;
- }
-
- static void process_query_states(void *query_parms, std::vector<void*> &shard_states, void *buff_state) {
- return;
- }
-
- static std::vector<Wrapped<R>> query(TrieSpline<R> *ts, void *q_state, void *parms) {
- //std::vector<Wrapped<R>> records;
- size_t tot = 0;
- auto p = (ts_range_query_parms<R> *) parms;
- auto s = (TrieSplineState<R> *) q_state;
-
- // if the returned index is one past the end of the
- // records for the TrieSpline, then there are not records
- // in the index falling into the specified range.
- if (s->start_idx == ts->get_record_count()) {
- return {};
- }
-
- auto ptr = ts->get_record_at(s->start_idx);
-
- // roll the pointer forward to the first record that is
- // greater than or equal to the lower bound.
- while(ptr->rec.key < p->lower_bound) {
- ptr++;
- }
-
-
- while (ptr->rec.key <= p->upper_bound && ptr < ts->m_data + s->stop_idx) {
- if (ptr->is_tombstone()) --tot;
- else if (!ptr->is_deleted()) ++tot;
- //records.emplace_back(*ptr);
- ptr++;
- }
-
- return {Wrapped<R>{0, {tot, 0}}};
- //return records;
- }
-
- static std::vector<Wrapped<R>> buffer_query(MutableBuffer<R> *buffer, void *state, void *parms) {
- size_t tot = 0;
- auto p = (ts_range_query_parms<R> *) parms;
- auto s = (TrieSplineBufferState<R> *) state;
-
- //std::vector<Wrapped<R>> records;
- for (size_t i=0; i<s->cutoff; i++) {
- auto rec = buffer->get_data() + i;
- if (rec->rec.key >= p->lower_bound && rec->rec.key <= p->upper_bound) {
- if (rec->is_tombstone()) --tot;
- else if (!rec->is_deleted()) ++tot;
- //records.emplace_back(*rec);
- }
-
- }
-
- return {Wrapped<R>{0, {tot, 0}}};
- //return records;
- }
-
- static std::vector<R> merge(std::vector<std::vector<Wrapped<R>>> &results, void *parms) {
-/*
- std::vector<Cursor<Wrapped<R>>> cursors;
- cursors.reserve(results.size());
-
- PriorityQueue<Wrapped<R>> pq(results.size());
- size_t total = 0;
- size_t tmp_n = results.size();
-
-
- for (size_t i = 0; i < tmp_n; ++i)
- if (results[i].size() > 0){
- auto base = results[i].data();
- cursors.emplace_back(Cursor{base, base + results[i].size(), 0, results[i].size()});
- assert(i == cursors.size() - 1);
- total += results[i].size();
- pq.push(cursors[i].ptr, tmp_n - i - 1);
- } else {
- cursors.emplace_back(Cursor<Wrapped<R>>{nullptr, nullptr, 0, 0});
- }
-
- if (total == 0) {
- return std::vector<R>();
- }
-
- std::vector<R> output;
- output.reserve(total);
-
- while (pq.size()) {
- auto now = pq.peek();
- auto next = pq.size() > 1 ? pq.peek(1) : queue_record<Wrapped<R>>{nullptr, 0};
- if (!now.data->is_tombstone() && next.data != nullptr &&
- now.data->rec == next.data->rec && next.data->is_tombstone()) {
-
- pq.pop(); pq.pop();
- auto& cursor1 = cursors[tmp_n - now.version - 1];
- auto& cursor2 = cursors[tmp_n - next.version - 1];
- if (advance_cursor<Wrapped<R>>(cursor1)) pq.push(cursor1.ptr, now.version);
- if (advance_cursor<Wrapped<R>>(cursor2)) pq.push(cursor2.ptr, next.version);
- } else {
- auto& cursor = cursors[tmp_n - now.version - 1];
- if (!now.data->is_tombstone()) output.push_back(cursor.ptr->rec);
- pq.pop();
-
- if (advance_cursor<Wrapped<R>>(cursor)) pq.push(cursor.ptr, now.version);
- }
- }
-
- return output;*/
-
- size_t tot = 0;
- for (auto& result: results)
- if (result.size() > 0) tot += result[0].rec.key;
-
- return {{tot, 0}};
- }
-
- static void delete_query_state(void *state) {
- auto s = (TrieSplineState<R> *) state;
- delete s;
- }
-
- static void delete_buffer_query_state(void *state) {
- auto s = (TrieSplineBufferState<R> *) state;
- delete s;
- }
-};
-
}