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Diffstat (limited to 'odb/sqlite/view-result.txx')
-rw-r--r-- | odb/sqlite/view-result.txx | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/odb/sqlite/view-result.txx b/odb/sqlite/view-result.txx new file mode 100644 index 0000000..eec8b0a --- /dev/null +++ b/odb/sqlite/view-result.txx @@ -0,0 +1,96 @@ +// file : odb/sqlite/view-result.txx +// author : Boris Kolpackov <boris@codesynthesis.com> +// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC +// license : GNU GPL v2; see accompanying LICENSE file + +#include <odb/callback.hxx> +#include <odb/exceptions.hxx> + +#include <odb/sqlite/view-statements.hxx> + +namespace odb +{ + namespace sqlite + { + template <typename T> + result_impl<T, class_view>:: + ~result_impl () + { + } + + template <typename T> + result_impl<T, class_view>:: + result_impl (const query& q, + details::shared_ptr<select_statement> statement, + view_statements<view_type>& statements) + : base_type (statements.connection ().database ()), + result_impl_base (q, statement), + statements_ (statements) + { + } + + template <typename T> + void result_impl<T, class_view>:: + load (view_type& view) + { + // The image can grow between calls to load() as a result of other + // statements execution. + // + typename view_traits::image_type& im (statements_.image ()); + + if (im.version != statements_.image_version ()) + { + binding& b (statements_.image_binding ()); + view_traits::bind (b.bind, im); + statements_.image_version (im.version); + b.version++; + } + + select_statement::result r (statement_->load ()); + + if (r == select_statement::truncated) + { + if (view_traits::grow (im, statements_.image_truncated ())) + im.version++; + + if (im.version != statements_.image_version ()) + { + binding& b (statements_.image_binding ()); + view_traits::bind (b.bind, im); + statements_.image_version (im.version); + b.version++; + statement_->reload (); + } + } + + odb::database& db (this->database ()); + + view_traits::callback (db, view, callback_event::pre_load); + view_traits::init (view, im); + view_traits::callback (db, view, callback_event::post_load); + } + + template <typename T> + void result_impl<T, class_view>:: + next () + { + this->current (pointer_type ()); + + if (!statement_->next ()) + this->end_ = true; + } + + template <typename T> + void result_impl<T, class_view>:: + cache () + { + } + + template <typename T> + std::size_t result_impl<T, class_view>:: + size () + { + throw result_not_cached (); + } + } +} |