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Sqlite: Use string view as result value

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String view is returning simply the string pointer and the size from the
database. In that way we remove useless copies to an intermediate data
type.

Change-Id: I3354061938c52df585e91054a97c900ae4cd39b3
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>
This commit is contained in:
Marco Bubke
2017-10-18 13:37:34 +02:00
committed by Tim Jenssen
parent 507d99f03c
commit 0a3df84533
3 changed files with 25 additions and 32 deletions
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15
src/libs/sqlite/sqlitebasestatement.cpp
View File

@@ -436,10 +436,10 @@ static StringType convertToTextForColumn(sqlite3_stmt *sqlStatment, int column)
case SQLITE_FLOAT:
case SQLITE3_TEXT: return textForColumn<StringType>(sqlStatment, column);
case SQLITE_BLOB:
case SQLITE_NULL: return {};
case SQLITE_NULL: break;
}
Q_UNREACHABLE();
return StringType{"", 0};
}
int BaseStatement::fetchIntValue(int column) const
@@ -500,17 +500,12 @@ StringType BaseStatement::fetchValue(int column) const
return convertToTextForColumn<StringType>(m_compiledStatement.get(), column);
}
Utils::SmallString BaseStatement::fetchSmallStringValue(int column) const
Utils::SmallStringView BaseStatement::fetchSmallStringViewValue(int column) const
{
return fetchValue<Utils::SmallString>(column);
}
Utils::PathString BaseStatement::fetchPathStringValue(int column) const
{
return fetchValue<Utils::PathString>(column);
return fetchValue<Utils::SmallStringView>(column);
}
template SQLITE_EXPORT Utils::SmallStringView BaseStatement::fetchValue<Utils::SmallStringView>(int column) const;
template SQLITE_EXPORT Utils::SmallString BaseStatement::fetchValue<Utils::SmallString>(int column) const;
template SQLITE_EXPORT Utils::PathString BaseStatement::fetchValue<Utils::PathString>(int column) const;
} // namespace Sqlite