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mariadb-columnstore-engine/utils/common/conststring.h
Alexander Barkov b08d719593 A cleanup for MCOL-4064 Make JOIN collation aware
A non-JOIN condition like `WHERE c1=c2` (with c1 and c2 being columns of the
same table) was not collation-aware yet after the main patches for MCOL-4064.

Additionally fixing StrFilterCmd::compare*() to address this.
2020-12-08 16:43:07 +04:00

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/* Copyright (C) 2020 MariaDB Corporation.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; version 2 of
the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301, USA. */
#ifndef MARIADB_CONSTSTRING_H
#define MARIADB_CONSTSTRING_H
namespace utils
{
class ConstString
{
const char *mStr;
size_t mLength;
public:
ConstString(const char *str, size_t length)
:mStr(str), mLength(length)
{ }
explicit ConstString(const std::string &str)
:mStr(str.data()), mLength(str.length())
{ }
const char *str() const { return mStr; }
size_t length() const { return mLength; }
ConstString & rtrimZero()
{
for ( ; mLength && mStr[mLength - 1] == '\0'; mLength--)
{ }
return *this;
}
};
} // namespace utils
#endif // MARIADB_CONSTSTRING_H