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fixing comparison of bounds.

This commit is contained in:
James 2014-08-21 18:40:02 +02:00
parent 89ba89bf77
commit fecaccf37f
2 changed files with 20 additions and 8 deletions
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27
arangod/Aql/ExecutionNode.h
View File

@ -932,8 +932,10 @@ namespace triagens {
// tighter than right, 0 that they are equal, 1 that right is tighter than
// left. For example, (x<1) is tighter than (x<=1) and (x>1) is tighter
// than (x>=1) . . .
// lowhigh should be -1 if the comparison is of lower bounds,
// and 1 if it is of upper bounds . . .
static int CompareRangeInfoBound (RangeInfoBound const* left,
RangeInfoBound const* right) {
RangeInfoBound const* right, int lowhigh) {
if (left == nullptr) {
return (right == nullptr ? 0 : 1);
}
@ -943,9 +945,9 @@ namespace triagens {
int cmp = TRI_CompareValuesJson(left->_bound.json(), right->_bound.json());
if (cmp == 0 && (left->_include != right->_include)) {
cmp = (left->_include?1:-1);
return (left->_include?1:-1);
}
return cmp;
return cmp * lowhigh;
};
////////////////////////////////////////////////////////////////////////////////
@ -1008,24 +1010,33 @@ namespace triagens {
return;
}
if(CompareRangeInfoBound(newRange->_low, oldRange->_low) == -1){
//this case is not covered by those below . . .
if (oldRange->is1ValueRangeInfo() && newRange->is1ValueRangeInfo()) {
if (!TRI_CheckSameValueJson(oldRange->_low->_bound.json(),
newRange->_low->_bound.json())) {
oldRange->_valid = false;
return;
}
}
if (CompareRangeInfoBound(newRange->_low, oldRange->_low, -1) == -1) {
oldRange->_low = newRange->_low;
}
if(CompareRangeInfoBound(newRange->_high, oldRange->_high) == -1){
if (CompareRangeInfoBound(newRange->_high, oldRange->_high, 1) == -1) {
oldRange->_high = newRange->_high;
}
// check the new range bounds are valid
if( oldRange->_low != nullptr && oldRange->_high != nullptr){
if (oldRange->_low != nullptr && oldRange->_high != nullptr) {
int cmp = TRI_CompareValuesJson(oldRange->_low->_bound.json(),
oldRange->_high->_bound.json());
if (cmp == 1 || (cmp == 0 &&
!(oldRange->_low->_include == true && oldRange->_high->_include == true ))){
!(oldRange->_low->_include == true && oldRange->_high->_include == true ))) {
// range invalid
oldRange->_valid = false;
}
}
}
size_t size () const {

1
arangod/Aql/OptimizerRules.cpp
View File

@ -206,6 +206,7 @@ class FilterToEnumCollFinder : public WalkerWorker<ExecutionNode> {
auto noRes = new NoResultsNode(newPlan->nextId());
newPlan->registerNode(noRes);
newPlan->insertDependency(x, noRes);
_out.push_back(newPlan);
}
}
}