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+// file      : odb/mssql/mssql-types.hxx
+// author    : Constantin Michael <constantin@codesynthesis.com>
+// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
+// license   : ODB NCUEL; see accompanying LICENSE file
+
+#ifndef ODB_MSSQL_MSSQL_TYPES_HXX
+#define ODB_MSSQL_MSSQL_TYPES_HXX
+
+#include <odb/pre.hxx>
+
+#include <cstddef> // std::size_t
+
+#include <odb/mssql/mssql-fwd.hxx>
+#include <odb/mssql/version.hxx>
+
+namespace odb
+{
+  namespace mssql
+  {
+    enum chunk_type
+    {
+      first_chunk,
+      next_chunk,
+      last_chunk,
+      one_chunk,
+      null_chunk
+    };
+
+    typedef void (*param_callback_type) (
+      const void* context,   // User context.
+      std::size_t* position, // Position context. Am implementation is free
+                             // to use this to track position information. It
+                             // is initialized to zero before the first call.
+      const void** buffer,   // [out] Buffer contaning the data.
+      std::size_t* size,     // [out] Data size.
+      chunk_type*,           // [out] The position of this chunk of data.
+      void* temp_buffer,     // A temporary buffer that may be used by the
+                             // implementation.
+      std::size_t capacity); // Capacity of the temporary buffer.
+
+    typedef void (*result_callback_type) (
+      void* context,         // User context.
+      std::size_t* position, // Position context. Am implementation is free
+                             // to use this to track position information. It
+                             // is initialized to zero before the first call.
+      void** buffer,         // [out] Buffer to copy the data to.
+      std::size_t* size,     // [in/out] In: amount of data copied into the
+                             // buffer after the previous call. Out: capacity
+                             // of the buffer.
+      chunk_type,            // The position of this chunk; first_chunk means
+                             // this is the first call, last_chunk means there
+                             // is no more data, null_chunk means this value is
+                             // NULL, and one_chunk means the value is empty
+                             // (in this case *size is 0).
+      std::size_t size_left, // Contains the amount of data left or 0 if this
+                             // information is not available.
+      void* temp_buffer,     // A temporary buffer that may be used by the
+                             // implementation.
+      std::size_t capacity); // Capacity of the temporary buffer.
+
+    struct long_callback
+    {
+      union
+      {
+        param_callback_type param;
+        result_callback_type result;
+      } callback;
+
+      union
+      {
+        const void* param;
+        void* result;
+      } context;
+    };
+
+    struct bind
+    {
+      // This enumeration identifies the possible buffer types that can be
+      // bound to a parameter or result. In most cases, these map directly
+      // to SQL_XXX/SQL_C_XXX codes.
+      //
+      enum buffer_type
+      {
+        bit,            // Buffer is a 1-byte integer.
+        tinyint,        // Buffer is a 1-byte integer.
+        smallint,       // Buffer is a 2-byte integer.
+        int_,           // Buffer is a 4-byte integer.
+        bigint,         // Buffer is an 8-byte integer.
+
+        /*
+        numeric,        // Buffer is an SQL_NUMERIC_STRUCT.
+
+        smallmoney,     // Buffer is a 4-byte integer (*10,000 value).
+        money,          // Buffer is an 8-byte integer (*10,000 value).
+        */
+
+        float4,         // Buffer is a float.
+        float8,         // Buffer is a double.
+
+        string,         // Buffer is a char array.
+        long_string,    // Buffer is a long_callback.
+
+        nstring,        // Buffer is a wchar_t (2-byte) array.
+        long_nstring,   // Buffer is a long_callback.
+
+        binary,         // Buffer is a byte array.
+        long_binary,    // Buffer is a long_callback.
+
+        /*
+        date,           // Buffer is an SQL_DATE_STRUCT.
+        time,           // Buffer is an SQL_SS_TIME2_STRUCT.
+        datetime,       // Buffer is an SQL_TIMESTAMP_STRUCT.
+        datetimeoffset, // Buffer is an SQL_SS_TIMESTAMPOFFSET_STRUCT.
+
+        uuid,           // Buffer is a 16-byte array (or SQLGUID).
+        rowversion,     // Buffer is an 8-byte array.
+        */
+
+        last            // Used as an end of list marker.
+      };
+
+      buffer_type type; // The buffer type.
+      void* buffer;     // The buffer. For long data this is a long_callback.
+      SQLLEN* size_ind; // Pointer to the size/inidicator variable.
+      SQLLEN capacity;  // Buffer capacity. For string/binary parameters
+                        // this value is also used as maximum column size.
+    };
+  }
+}
+
+#include <odb/post.hxx>
+
+#endif // ODB_MSSQL_MSSQL_TYPES_HXX