From 2895ad78dbdb43e57fc34558b4530b4e105fc72d Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Thu, 1 Feb 2024 18:10:29 +0300
Subject: Turn libodb-mssql repository into package for muti-package repository

---
 libodb-mssql/odb/mssql/simple-object-result.txx | 186 ++++++++++++++++++++++++
 1 file changed, 186 insertions(+)
 create mode 100644 libodb-mssql/odb/mssql/simple-object-result.txx

(limited to 'libodb-mssql/odb/mssql/simple-object-result.txx')

diff --git a/libodb-mssql/odb/mssql/simple-object-result.txx b/libodb-mssql/odb/mssql/simple-object-result.txx
new file mode 100644
index 0000000..3a0e984
--- /dev/null
+++ b/libodb-mssql/odb/mssql/simple-object-result.txx
@@ -0,0 +1,186 @@
+// file      : odb/mssql/simple-object-result.txx
+// license   : ODB NCUEL; see accompanying LICENSE file
+
+#include <cassert>
+
+#include <odb/callback.hxx>
+#include <odb/exceptions.hxx> // result_not_cached
+
+#include <odb/mssql/exceptions.hxx> // long_data_reload
+#include <odb/mssql/simple-object-statements.hxx>
+
+namespace odb
+{
+  namespace mssql
+  {
+    template <typename T>
+    object_result_impl<T>::
+    ~object_result_impl ()
+    {
+      invalidate ();
+    }
+
+    template <typename T>
+    void object_result_impl<T>::
+    invalidate ()
+    {
+      change_callback_type& cc (statements_.image ().change_callback_);
+
+      if (cc.context == this)
+      {
+        cc.callback = 0;
+        cc.context = 0;
+      }
+
+      delete image_copy_;
+      image_copy_ = 0;
+
+      if (!this->end_)
+      {
+        statement_->free_result ();
+        this->end_ = true;
+      }
+
+      statement_.reset ();
+    }
+
+    template <typename T>
+    object_result_impl<T>::
+    object_result_impl (const query_base&,
+                        details::shared_ptr<select_statement> statement,
+                        statements_type& statements,
+                        const schema_version_migration* svm)
+        : base_type (statements.connection ()),
+          statement_ (statement),
+          statements_ (statements),
+          tc_ (svm),
+          use_copy_ (false),
+          image_copy_ (0)
+    {
+    }
+
+    template <typename T>
+    void object_result_impl<T>::
+    load (object_type& obj, bool)
+    {
+      if (!can_load_)
+        throw long_data_reload ();
+
+      // This is a top-level call so the statements cannot be locked.
+      //
+      assert (!statements_.locked ());
+      typename statements_type::auto_lock l (statements_);
+
+      object_traits::callback (this->db_, obj, callback_event::pre_load);
+
+      typename object_traits::image_type& i (
+        use_copy_ ? *image_copy_ : statements_.image ());
+
+      tc_.init (obj, i, &this->db_);
+
+      // If we are using a copy, make sure the callback information for
+      // long data also comes from the copy.
+      //
+      can_load_ = !statement_->stream_result (
+        use_copy_ ? &statements_.image () : 0,
+        use_copy_ ? image_copy_ : 0);
+
+      // Initialize the id image and binding and load the rest of the object
+      // (containers, etc).
+      //
+      typename object_traits::id_image_type& idi (statements_.id_image ());
+      object_traits::init (idi, object_traits::id (i));
+
+      binding& idb (statements_.id_image_binding ());
+      if (idi.version != statements_.id_image_version () || idb.version == 0)
+      {
+        object_traits::bind (idb.bind, idi);
+        statements_.id_image_version (idi.version);
+        idb.version++;
+      }
+
+      tc_.load_ (statements_, obj, false);
+      statements_.load_delayed (tc_.version ());
+      l.unlock ();
+      object_traits::callback (this->db_, obj, callback_event::post_load);
+    }
+
+    template <typename T>
+    typename object_result_impl<T>::id_type
+    object_result_impl<T>::
+    load_id ()
+    {
+      return object_traits::id (
+        use_copy_ ? *image_copy_ : statements_.image ());
+    }
+
+    template <typename T>
+    void object_result_impl<T>::
+    next ()
+    {
+      can_load_ = true;
+      this->current (pointer_type ());
+
+      typename object_traits::image_type& im (statements_.image ());
+      change_callback_type& cc (im.change_callback_);
+
+      if (cc.context == this)
+      {
+        cc.callback = 0;
+        cc.context = 0;
+      }
+
+      use_copy_ = false;
+
+      if (im.version != statements_.select_image_version ())
+      {
+        binding& b (statements_.select_image_binding ());
+        tc_.bind (b.bind, im, statement_select);
+        statements_.select_image_version (im.version);
+        b.version++;
+      }
+
+      if (statement_->fetch () == select_statement::no_data)
+      {
+        statement_->free_result ();
+        this->end_ = true;
+      }
+      else
+      {
+        cc.callback = &change_callback;
+        cc.context = this;
+      }
+    }
+
+    template <typename T>
+    void object_result_impl<T>::
+    cache ()
+    {
+    }
+
+    template <typename T>
+    std::size_t object_result_impl<T>::
+    size ()
+    {
+      throw result_not_cached ();
+    }
+
+    template <typename T>
+    void object_result_impl<T>::
+    change_callback (void* c)
+    {
+      object_result_impl<T>* r (static_cast<object_result_impl<T>*> (c));
+      typename object_traits::image_type& im (r->statements_.image ());
+
+      if (r->image_copy_ == 0)
+        r->image_copy_ = new typename object_traits::image_type (im);
+      else
+        *r->image_copy_ = im;
+
+      im.change_callback_.callback = 0;
+      im.change_callback_.context = 0;
+
+      r->use_copy_ = true;
+    }
+  }
+}
-- 
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