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Come up with plan for variable bounds execution.

This commit is contained in:
Max Neunhoeffer 2014-09-10 16:44:08 +02:00
parent 5ff594f3bc
commit 028740a4bd
1 changed files with 11 additions and 1 deletions
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12
arangod/Aql/ExecutionBlock.cpp
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@ -790,13 +790,20 @@ IndexRangeBlock::IndexRangeBlock (ExecutionEngine* engine,
std::cout << "USING INDEX: " << ep->_index->_iid << ", " <<
TRI_TypeNameIndex(ep->_index->_type) << "\n";
*/
// TODO: detect whether all ranges are constant
// TODO: if not, instanciate expressions
}
IndexRangeBlock::~IndexRangeBlock () {
// TODO: free expressions
}
bool IndexRangeBlock::readIndex () {
// TODO: adjust to make callable multiple times with proper cleanup
// TODO: in variable case, evaluate all expressions, work actual values
// into constant bound and finally use these
if (_documents.empty()) {
_documents.reserve(DefaultBatchSize);
}
@ -804,7 +811,6 @@ bool IndexRangeBlock::readIndex () {
_documents.clear();
auto en = static_cast<IndexRangeNode const*>(getPlanNode());
if (en->_index->_type == TRI_IDX_TYPE_SKIPLIST_INDEX) {
readSkiplistIndex();
@ -827,6 +833,7 @@ int IndexRangeBlock::initialize () {
}
}
// TODO: if all constant, then do it here, otherwise not
readIndex();
return res;
}
@ -911,6 +918,9 @@ AqlItemBlock* IndexRangeBlock::getSome (size_t atLeast,
delete cur;
_pos = 0;
}
// TODO: if bounds are variable, then repeat readIndex here
}
// Clear out registers no longer needed later: