GiSTlist<MTentry *>
MT::RangeSearch (const MTquery& query, int *pages)
{
GiSTpath path;
path.MakeRoot ();
MTnode *root = (MTnode *) ReadNode (path);
GiSTlist<MTentry *> list = root->RangeSearch(query, pages);
delete root;
return list;
}
GiSTlist<MTentry *>
MTnode::RangeSearch(const MTquery &query)
{
GiSTlist<MTentry *> result;
if(IsLeaf())
for(int i=0; i<NumEntries(); i++) {
MTentry *e=(MTentry *)(*this)[i].Ptr()->Copy();
MTquery *q=(MTquery *)query.Copy();
if(q->Consistent(*e)) { // object qualifies
e->setmaxradius(q->Grade());
result.Append(e);
}
else delete e;
delete q;
}
else
for(int i=0; i<NumEntries(); i++) {
MTentry *e=(MTentry *)(*this)[i].Ptr();
MTquery *q=(MTquery *)query.Copy();
if(q->Consistent(*e)) { // sub-tree not excluded
GiSTpath childpath=Path();
MTnode *child;
GiSTlist<MTentry *>list;
childpath.MakeChild(e->Ptr());
child=(MTnode *)((MT *)Tree())->ReadNode(childpath);
list=child->RangeSearch(*q); // recurse the search
while(!list.IsEmpty()) result.Append(list.RemoveFront());
delete child;
}
delete q;
}
return result;
}
GiSTlist<MTentry *>
MTnode::RangeSearch (const MTquery &query)
{
GiSTlist<MTentry *> results;
if (IsLeaf()) {
for (int i=0; i<NumEntries(); i++) {
MTentry *entry = (MTentry *) (*this)[i].Ptr()->Copy();
MTquery *newQuery = (MTquery *) query.Copy();
if (newQuery->Consistent(*entry)) { // object qualifies
entry->SetMaxRadius(newQuery->Grade());
results.Append (entry);
} else {
delete entry;
}
delete newQuery;
}
} else {
for (int i=0; i<NumEntries(); i++) {
MTentry *entry = (MTentry *) (*this)[i].Ptr();
MTquery *newQuery = (MTquery *) query.Copy();
if (newQuery->Consistent(*entry)) { // sub-tree included
GiSTpath childPath = Path ();
childPath.MakeChild (entry->Ptr());
MTnode *childNode = (MTnode *) ((MT *)Tree())->ReadNode(childPath);
GiSTlist<MTentry *> childResults = childNode->RangeSearch(*newQuery); // recurse the search
while (!childResults.IsEmpty()) {
results.Append (childResults.RemoveFront());
}
delete childNode;
}
delete newQuery;
}
}
return results;
}