diff options
| -rw-r--r-- | odb/qt/basic/pgsql/quuid-traits.hxx | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/odb/qt/basic/pgsql/quuid-traits.hxx b/odb/qt/basic/pgsql/quuid-traits.hxx index 3af06cf..b500fe5 100644 --- a/odb/qt/basic/pgsql/quuid-traits.hxx +++ b/odb/qt/basic/pgsql/quuid-traits.hxx @@ -25,11 +25,18 @@ namespace odb typedef value_type query_type; typedef unsigned char* image_type; + // PostgreSQL binary UUID representation is big-endian in the RFC 4122, + // section 4.1.2 order. While Qt provides (since 4.8) to/fromRfc4122(), + // they both incur a memory allocation (by QByteArray) which we could + // avoid, if we did it ourselves. + // + static void set_value (value_type& v, const unsigned char* i, bool is_null) { if (!is_null) - std::memcpy (&v.data1, i, 16); + v = QUuid::fromRfc4122 ( + QByteArray (reinterpret_cast<const char*> (i), 16)); else v = QUuid (); } @@ -42,7 +49,7 @@ namespace odb is_null = is_null && v.isNull (); if (!is_null) - std::memcpy (i, &v.data1, 16); + std::memcpy (i, v.toRfc4122 ().constData (), 16); } }; |