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Addition to prev. revision [#METR-2944].

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This commit is contained in:
Alexey Milovidov 2016-11-20 15:46:32 +03:00
parent 9018906e1a
commit 8236fd2076
1 changed files with 14 additions and 17 deletions
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31
dbms/src/Columns/ColumnString.cpp
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@ -15,26 +15,23 @@ int ColumnString::compareAtWithCollation(size_t n, size_t m, const IColumn & rhs
}
namespace
template <bool positive>
struct lessWithCollation
{
template <bool positive>
struct lessWithCollation
const ColumnString & parent;
const Collator & collator;
lessWithCollation(const ColumnString & parent_, const Collator & collator_) : parent(parent_), collator(collator_) {}
bool operator()(size_t lhs, size_t rhs) const
{
const ColumnString & parent;
const Collator & collator;
int res = collator.compare(
reinterpret_cast<const char *>(&parent.chars[parent.offsetAt(lhs)]), parent.sizeAt(lhs),
reinterpret_cast<const char *>(&parent.chars[parent.offsetAt(rhs)]), parent.sizeAt(rhs));
lessWithCollation(const ColumnString & parent_, const Collator & collator_) : parent(parent_), collator(collator_) {}
bool operator()(size_t lhs, size_t rhs) const
{
int res = collator.compare(
reinterpret_cast<const char *>(&parent.chars[parent.offsetAt(lhs)]), parent.sizeAt(lhs),
reinterpret_cast<const char *>(&parent.chars[parent.offsetAt(rhs)]), parent.sizeAt(rhs));
return positive ? (res < 0) : (res > 0);
}
};
}
return positive ? (res < 0) : (res > 0);
}
};
void ColumnString::getPermutationWithCollation(const Collator & collator, bool reverse, size_t limit, Permutation & res) const