diff options
author | Boris Kolpackov <boris@codesynthesis.com> | 2012-04-23 16:48:01 +0200 |
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committer | Boris Kolpackov <boris@codesynthesis.com> | 2012-04-23 16:48:01 +0200 |
commit | 851cbe3927b987ec992bbbb69bd62224bf4a0dc3 (patch) | |
tree | 278298c656c75b1625e9408a15e81736c35c194e /odb/sqlite/no-id-object-result.txx | |
parent | 7d52205f2b2fc9403b9ea46483e8a17746c6be35 (diff) |
Polymorphic inheritance support
Diffstat (limited to 'odb/sqlite/no-id-object-result.txx')
-rw-r--r-- | odb/sqlite/no-id-object-result.txx | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/odb/sqlite/no-id-object-result.txx b/odb/sqlite/no-id-object-result.txx new file mode 100644 index 0000000..8519c47 --- /dev/null +++ b/odb/sqlite/no-id-object-result.txx @@ -0,0 +1,100 @@ +// file : odb/sqlite/no-id-object-result.txx +// copyright : Copyright (c) 2009-2012 Code Synthesis Tools CC +// license : GNU GPL v2; see accompanying LICENSE file + +#include <odb/callback.hxx> +#include <odb/exceptions.hxx> // result_not_cached + +#include <odb/sqlite/no-id-object-statements.hxx> + +namespace odb +{ + namespace sqlite + { + template <typename T> + no_id_object_result_impl<T>:: + ~no_id_object_result_impl () + { + if (!this->end_) + statement_->free_result (); + } + + template <typename T> + no_id_object_result_impl<T>:: + no_id_object_result_impl (const query& q, + details::shared_ptr<select_statement> statement, + statements_type& statements) + : base_type (statements.connection ().database ()), + result_impl_base (q, statement), + statements_ (statements) + { + } + + template <typename T> + void no_id_object_result_impl<T>:: + load (object_type& obj) + { + // The image can grow between calls to load() as a result of other + // statements execution. + // + typename object_traits::image_type& im (statements_.image ()); + + if (im.version != statements_.select_image_version ()) + { + binding& b (statements_.select_image_binding ()); + object_traits::bind (b.bind, im, statement_select); + statements_.select_image_version (im.version); + b.version++; + } + + select_statement::result r (statement_->load ()); + + if (r == select_statement::truncated) + { + if (object_traits::grow (im, statements_.select_image_truncated ())) + im.version++; + + if (im.version != statements_.select_image_version ()) + { + binding& b (statements_.select_image_binding ()); + object_traits::bind (b.bind, im, statement_select); + statements_.select_image_version (im.version); + b.version++; + statement_->reload (); + } + } + + odb::database& db (this->database ()); + + object_traits::callback (db, obj, callback_event::pre_load); + object_traits::init (obj, im, &db); + object_traits::callback (db, obj, callback_event::post_load); + } + + template <typename T> + void no_id_object_result_impl<T>:: + next () + { + this->current (pointer_type ()); + + if (!statement_->next ()) + { + statement_->free_result (); + this->end_ = true; + } + } + + template <typename T> + void no_id_object_result_impl<T>:: + cache () + { + } + + template <typename T> + std::size_t no_id_object_result_impl<T>:: + size () + { + throw result_not_cached (); + } + } +} |