summaryrefslogtreecommitdiff
path: root/libodb-qt/odb/qt/basic/oracle/qbyte-array-traits.hxx
diff options
context:
space:
mode:
Diffstat (limited to 'libodb-qt/odb/qt/basic/oracle/qbyte-array-traits.hxx')
-rw-r--r--libodb-qt/odb/qt/basic/oracle/qbyte-array-traits.hxx167
1 files changed, 167 insertions, 0 deletions
diff --git a/libodb-qt/odb/qt/basic/oracle/qbyte-array-traits.hxx b/libodb-qt/odb/qt/basic/oracle/qbyte-array-traits.hxx
new file mode 100644
index 0000000..6979cc9
--- /dev/null
+++ b/libodb-qt/odb/qt/basic/oracle/qbyte-array-traits.hxx
@@ -0,0 +1,167 @@
+// file : odb/qt/basic/oracle/qbyte-array-traits.hxx
+// license : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef ODB_QT_BASIC_ORACLE_QBYTE_ARRAY_TRAITS_HXX
+#define ODB_QT_BASIC_ORACLE_QBYTE_ARRAY_TRAITS_HXX
+
+#include <odb/pre.hxx>
+
+#include <cstring> // std::memcpy
+#include <cstddef> // std::size_t
+
+#include <QtCore/QByteArray>
+
+#include <odb/oracle/traits.hxx>
+
+namespace odb
+{
+ namespace oracle
+ {
+ template <>
+ struct default_value_traits<QByteArray, id_raw>
+ {
+ typedef QByteArray value_type;
+ typedef QByteArray query_type;
+ typedef char* image_type;
+
+ static void
+ set_value (QByteArray& v,
+ const char* b,
+ std::size_t n,
+ bool is_null)
+ {
+ if (is_null)
+ v = QByteArray ();
+ else
+ {
+ // Note that we cannot use replace() here since a suitable
+ // overload was only added in Qt 4.7.
+ //
+ v.resize (static_cast<int> (n));
+ std::memcpy (v.data (), b, n);
+ }
+ }
+
+ static void
+ set_image (char* b,
+ std::size_t c,
+ std::size_t& n,
+ bool& is_null,
+ const QByteArray& v)
+ {
+ if (v.isNull ())
+ is_null = true;
+ else
+ {
+ is_null = false;
+
+ n = static_cast<std::size_t> (v.size ());
+
+ if (n > c)
+ n = c;
+
+ std::memcpy (b, v.constData (), n);
+ }
+ }
+ };
+
+ template <>
+ struct default_value_traits<QByteArray, id_blob>
+ {
+ typedef QByteArray value_type;
+ typedef QByteArray query_type;
+ typedef lob_callback image_type;
+
+ static void
+ set_value (QByteArray& v,
+ result_callback_type& cb,
+ void*& context,
+ bool is_null)
+ {
+ if (is_null)
+ v = QByteArray ();
+ else
+ {
+ cb = &result_callback;
+ context = &v;
+ }
+ }
+
+ static void
+ set_image (param_callback_type& cb,
+ const void*& context,
+ bool& is_null,
+ const QByteArray& v)
+ {
+ if (v.isNull ())
+ is_null = true;
+ else
+ {
+ is_null = false;
+ cb = &param_callback;
+ context = &v;
+ }
+ }
+
+ static bool
+ result_callback (void* context,
+ ub4*,
+ void* b,
+ ub4 s,
+ chunk_position p)
+ {
+ QByteArray& v (*static_cast<QByteArray*> (context));
+
+ switch (p)
+ {
+ case chunk_one:
+ case chunk_first:
+ {
+ v.clear ();
+
+ // Falling through.
+ }
+ case chunk_next:
+ case chunk_last:
+ {
+ v.append (static_cast<char*> (b), static_cast<int> (s));
+ break;
+ }
+ }
+
+ return true;
+ }
+
+ static bool
+ param_callback (const void* context,
+ ub4*,
+ const void** b,
+ ub4* s,
+ chunk_position* p,
+ void*,
+ ub4)
+ {
+ const QByteArray& v (*static_cast<const QByteArray*> (context));
+
+ *p = chunk_one;
+ *s = static_cast<ub4> (v.size ());
+ *b = v.constData ();
+
+ return true;
+ }
+ };
+
+ template <>
+ struct default_type_traits<QByteArray>
+ {
+ // Allow use of QByteArray in query expressions by default by specifying
+ // the default type id as RAW.
+ //
+ static const database_type_id db_type_id = id_raw;
+ };
+ }
+}
+
+#include <odb/post.hxx>
+
+#endif // ODB_QT_BASIC_ORACLE_QBYTE_ARRAY_TRAITS_HXX