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MCOL-3536 use Locale from columnstore.xml when doing ORDER BY

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This commit is contained in:
David Hall
2019-10-08 13:02:52 -05:00
committed by Roman Nozdrin
parent 3e7a964e2a
commit 3b01d5ea22
2 changed files with 37 additions and 8 deletions
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13
utils/windowfunction/idborderby.cpp
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@ -130,13 +130,12 @@ int StringCompare::operator()(IdbCompare* l, Row::Pointer r1, Row::Pointer r2)
}
else
{
string v1 = l->row1().getStringField(fSpec.fIndex);
string v2 = l->row2().getStringField(fSpec.fIndex);
if (v1 > v2)
ret = fSpec.fAsc;
else if (v1 < v2)
ret = -fSpec.fAsc;
int len1 = l->row1().getStringLength(fSpec.fIndex);
int len2 = l->row2().getStringLength(fSpec.fIndex);
const char* s1 = (const char*)l->row1().getStringPointer(fSpec.fIndex);
const char* s2 = (const char*)l->row2().getStringPointer(fSpec.fIndex);
const std::collate<char>& coll = std::use_facet<std::collate<char> >(loc);
ret = fSpec.fAsc * coll.compare(s1, s1+len1, s2, s2+len2);
}
return ret;

32
utils/windowfunction/idborderby.h
View File

@ -63,6 +63,7 @@ struct IdbSortSpec
// TODO There are three ordering specs since 10.2
int fAsc; // <ordering specification> ::= ASC | DESC
int fNf; // <null ordering> ::= NULLS FIRST | NULLS LAST
std::string fLocale;
IdbSortSpec() : fIndex(-1), fAsc(1), fNf(1) {}
IdbSortSpec(int i, bool b) : fIndex(i), fAsc(b ? 1 : -1), fNf(fAsc) {}
@ -75,13 +76,42 @@ struct IdbSortSpec
class Compare
{
public:
Compare(const IdbSortSpec& spec) : fSpec(spec) {}
Compare(const IdbSortSpec& spec) : fSpec(spec)
{
// Save off the current Locale in case something goes wrong.
std::string curLocale = setlocale(LC_COLLATE, NULL);
if (spec.fLocale.length() > 0)
{
fLocale = spec.fLocale;
}
else
{
fLocale = curLocale;
}
try
{
std::locale localloc(fLocale.c_str());
loc = localloc;
}
catch(...)
{
fLocale = curLocale;
std::locale localloc(fLocale.c_str());
loc = localloc;
}
if (fLocale.find("ja_JP") != std::string::npos)
JPcodePoint = true;
}
virtual ~Compare() {}
virtual int operator()(IdbCompare*, rowgroup::Row::Pointer, rowgroup::Row::Pointer) = 0;
protected:
IdbSortSpec fSpec;
std::string fLocale;
std::locale loc;
bool JPcodePoint; // code point ordering (Japanese UTF) flag
};