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add initializeCursor back to DistinctCollectExecutor (#9386)

This commit is contained in:
Jan 2019-07-03 16:15:15 +02:00 committed by GitHub
parent 61f3397e33
commit 801c957348
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3 changed files with 21 additions and 6 deletions
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21
arangod/Aql/DistinctCollectExecutor.cpp
View File

@ -64,12 +64,11 @@ DistinctCollectExecutor::DistinctCollectExecutor(Fetcher& fetcher, Infos& infos)
AqlValueGroupEqual(_infos.getTransaction())) {}
DistinctCollectExecutor::~DistinctCollectExecutor() {
// destroy all AqlValues captured
for (auto& it : _seen) {
for (auto& it2 : it) {
const_cast<AqlValue*>(&it2)->destroy();
}
}
destroyValues();
}
void DistinctCollectExecutor::initializeCursor() {
destroyValues();
}
std::pair<ExecutionState, NoStats> DistinctCollectExecutor::produceRows(OutputAqlItemRow& output) {
@ -138,3 +137,13 @@ std::pair<ExecutionState, size_t> DistinctCollectExecutor::expectedNumberOfRows(
// but it is upper bounded by the input.
return _fetcher.preFetchNumberOfRows(atMost);
}
void DistinctCollectExecutor::destroyValues() {
// destroy all AqlValues captured
for (auto& it : _seen) {
for (auto& it2 : it) {
const_cast<AqlValue*>(&it2)->destroy();
}
}
_seen.clear();
}

3
arangod/Aql/DistinctCollectExecutor.h
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@ -95,6 +95,8 @@ class DistinctCollectExecutor {
DistinctCollectExecutor(DistinctCollectExecutor const&) = delete;
DistinctCollectExecutor(Fetcher& fetcher, Infos&);
~DistinctCollectExecutor();
void initializeCursor();
/**
* @brief produce the next Row of Aql Values.
@ -107,6 +109,7 @@ class DistinctCollectExecutor {
private:
Infos const& infos() const noexcept { return _infos; };
void destroyValues();
private:
Infos const& _infos;

3
arangod/Aql/ExecutionBlockImpl.cpp
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@ -372,6 +372,9 @@ std::pair<ExecutionState, Result> ExecutionBlockImpl<Executor>::initializeCursor
static_assert(!std::is_same<Executor, IndexExecutor>::value || customInit,
"IndexExecutor is expected to implement a custom "
"initializeCursor method!");
static_assert(!std::is_same<Executor, DistinctCollectExecutor>::value || customInit,
"DistinctCollectExecutor is expected to implement a custom "
"initializeCursor method!");
InitializeCursor<customInit>::init(_executor, _rowFetcher, _infos);
// // use this with c++17 instead of specialisation below