aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--odb/sqlite/makefile1
-rw-r--r--odb/sqlite/traits.cxx54
-rw-r--r--odb/sqlite/traits.hxx230
3 files changed, 285 insertions, 0 deletions
diff --git a/odb/sqlite/makefile b/odb/sqlite/makefile
index 4f34741..f46587f 100644
--- a/odb/sqlite/makefile
+++ b/odb/sqlite/makefile
@@ -13,6 +13,7 @@ error.cxx \
exceptions.cxx \
statement-cache.cxx \
statement.cxx \
+traits.cxx \
transaction.cxx \
transaction-impl.cxx
diff --git a/odb/sqlite/traits.cxx b/odb/sqlite/traits.cxx
new file mode 100644
index 0000000..de6c792
--- /dev/null
+++ b/odb/sqlite/traits.cxx
@@ -0,0 +1,54 @@
+// file : odb/sqlite/traits.cxx
+// author : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
+// license : GNU GPL v2; see accompanying LICENSE file
+
+#include <cstring> // std::memcpy, std::strlen
+
+#include <odb/sqlite/traits.hxx>
+
+using namespace std;
+
+namespace odb
+{
+ namespace sqlite
+ {
+ using details::buffer;
+
+ // default_value_traits<std::string>
+ //
+ void default_value_traits<string, buffer, id_text>::
+ set_image (buffer& b,
+ size_t& n,
+ bool& is_null,
+ const string& v)
+ {
+ is_null = false;
+ n = v.size ();
+
+ if (n > b.capacity ())
+ b.capacity (n);
+
+ if (n != 0)
+ memcpy (b.data (), v.c_str (), n);
+ }
+
+ // default_value_traits<const char*>
+ //
+ void default_value_traits<const char*, buffer, id_text>::
+ set_image (buffer& b,
+ size_t& n,
+ bool& is_null,
+ const char* v)
+ {
+ is_null = false;
+ n = strlen (v);
+
+ if (n > b.capacity ())
+ b.capacity (n);
+
+ if (n != 0)
+ memcpy (b.data (), v, n);
+ }
+ }
+}
diff --git a/odb/sqlite/traits.hxx b/odb/sqlite/traits.hxx
new file mode 100644
index 0000000..e5ef318
--- /dev/null
+++ b/odb/sqlite/traits.hxx
@@ -0,0 +1,230 @@
+// file : odb/sqlite/traits.hxx
+// author : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
+// license : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef ODB_SQLITE_TRAITS_HXX
+#define ODB_SQLITE_TRAITS_HXX
+
+#include <odb/pre.hxx>
+
+#include <string>
+#include <cstddef> // std::size_t
+
+#include <odb/traits.hxx>
+#include <odb/details/buffer.hxx>
+
+#include <odb/sqlite/version.hxx>
+#include <odb/sqlite/details/export.hxx>
+
+namespace odb
+{
+ namespace sqlite
+ {
+ enum database_type_id
+ {
+ id_integer,
+ id_real,
+ id_text,
+ id_blob
+ };
+
+ //
+ // value_traits
+ //
+
+ template <typename T, typename I, database_type_id>
+ struct default_value_traits;
+
+ template <typename T, typename I, database_type_id ID>
+ class value_traits: public default_value_traits<T, I, ID>
+ {
+ };
+
+ template <typename T, typename I, database_type_id>
+ struct default_value_traits
+ {
+ typedef T value_type;
+ typedef T query_type;
+ typedef I image_type;
+
+ static void
+ set_value (T& v, I i, bool is_null)
+ {
+ if (!is_null)
+ v = T (i);
+ else
+ v = T ();
+ }
+
+ static void
+ set_image (I& i, bool& is_null, T v)
+ {
+ is_null = false;
+ i = I (v);
+ }
+ };
+
+ // std::string specialization.
+ //
+ template <>
+ struct LIBODB_SQLITE_EXPORT default_value_traits<
+ std::string, details::buffer, id_text>
+ {
+ typedef std::string value_type;
+ typedef std::string query_type;
+ typedef details::buffer image_type;
+
+ static void
+ set_value (std::string& v,
+ const details::buffer& b,
+ std::size_t n,
+ bool is_null)
+ {
+ if (!is_null)
+ v.assign (b.data (), n);
+ else
+ v.erase ();
+ }
+
+ static void
+ set_image (details::buffer&,
+ std::size_t& n,
+ bool& is_null,
+ const std::string&);
+ };
+
+ // const char* specialization
+ //
+ // Specialization for const char* which only supports initialization
+ // of an image from the value but not the other way around. This way
+ // we can pass such values to the queries.
+ //
+ template <>
+ struct LIBODB_SQLITE_EXPORT default_value_traits<
+ const char*, details::buffer, id_text>
+ {
+ typedef const char* value_type;
+ typedef const char* query_type;
+ typedef details::buffer image_type;
+
+ static void
+ set_image (details::buffer&,
+ std::size_t& n,
+ bool& is_null,
+ const char*);
+ };
+
+ //
+ // type_traits
+ //
+
+ template <typename T>
+ struct default_type_traits;
+
+ template <typename T>
+ class type_traits: public default_type_traits<T>
+ {
+ };
+
+ // Integral types.
+ //
+ template <>
+ struct default_type_traits<bool>
+ {
+ static const database_type_id db_type_id = id_integer;
+ };
+
+ template <>
+ struct default_type_traits<signed char>
+ {
+ static const database_type_id db_type_id = id_integer;
+ };
+
+ template <>
+ struct default_type_traits<unsigned char>
+ {
+ static const database_type_id db_type_id = id_integer;
+ };
+
+ template <>
+ struct default_type_traits<short>
+ {
+ static const database_type_id db_type_id = id_integer;
+ };
+
+ template <>
+ struct default_type_traits<unsigned short>
+ {
+ static const database_type_id db_type_id = id_integer;
+ };
+
+ template <>
+ struct default_type_traits<int>
+ {
+ static const database_type_id db_type_id = id_integer;
+ };
+
+ template <>
+ struct default_type_traits<unsigned int>
+ {
+ static const database_type_id db_type_id = id_integer;
+ };
+
+ template <>
+ struct default_type_traits<long>
+ {
+ static const database_type_id db_type_id = id_integer;
+ };
+
+ template <>
+ struct default_type_traits<unsigned long>
+ {
+ static const database_type_id db_type_id = id_integer;
+ };
+
+ template <>
+ struct default_type_traits<long long>
+ {
+ static const database_type_id db_type_id = id_integer;
+ };
+
+ template <>
+ struct default_type_traits<unsigned long long>
+ {
+ static const database_type_id db_type_id = id_integer;
+ };
+
+ // Float types.
+ //
+ template <>
+ struct default_type_traits<float>
+ {
+ static const database_type_id db_type_id = id_real;
+ };
+
+ template <>
+ struct default_type_traits<double>
+ {
+ static const database_type_id db_type_id = id_real;
+ };
+
+ // String type.
+ //
+ template <>
+ struct default_type_traits<std::string>
+ {
+ static const database_type_id db_type_id = id_text;
+ };
+
+ template <>
+ struct default_type_traits<const char*>
+ {
+ static const database_type_id db_type_id = id_text;
+ };
+ }
+}
+
+#include <odb/post.hxx>
+
+#endif // ODB_SQLITE_TRAITS_HXX