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-rw-r--r--odb/mysql/forward.hxx3
-rw-r--r--odb/mysql/makefile1
-rw-r--r--odb/mysql/object-result.hxx79
-rw-r--r--odb/mysql/object-result.txx (renamed from odb/mysql/result.txx)23
-rw-r--r--odb/mysql/object-statements.hxx23
-rw-r--r--odb/mysql/query.hxx16
-rw-r--r--odb/mysql/result.hxx64
-rw-r--r--odb/mysql/statement-cache.hxx22
-rw-r--r--odb/mysql/statements-base.cxx17
-rw-r--r--odb/mysql/statements-base.hxx51
-rw-r--r--odb/mysql/view-result.hxx74
-rw-r--r--odb/mysql/view-result.txx152
-rw-r--r--odb/mysql/view-statements.hxx106
-rw-r--r--odb/mysql/view-statements.txx29
14 files changed, 569 insertions, 91 deletions
diff --git a/odb/mysql/forward.hxx b/odb/mysql/forward.hxx
index 94b175b..08ada00 100644
--- a/odb/mysql/forward.hxx
+++ b/odb/mysql/forward.hxx
@@ -30,6 +30,9 @@ namespace odb
class object_statements;
template <typename T>
+ class view_statements;
+
+ template <typename T>
class container_statements;
}
diff --git a/odb/mysql/makefile b/odb/mysql/makefile
index 91eca19..19affbd 100644
--- a/odb/mysql/makefile
+++ b/odb/mysql/makefile
@@ -15,6 +15,7 @@ exceptions.cxx \
object-statements.cxx \
query.cxx \
statement.cxx \
+statements-base.cxx \
transaction.cxx \
transaction-impl.cxx \
traits.cxx
diff --git a/odb/mysql/object-result.hxx b/odb/mysql/object-result.hxx
new file mode 100644
index 0000000..6061536
--- /dev/null
+++ b/odb/mysql/object-result.hxx
@@ -0,0 +1,79 @@
+// file : odb/mysql/object-result.hxx
+// author : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC
+// license : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef ODB_MYSQL_OBJECT_RESULT_HXX
+#define ODB_MYSQL_OBJECT_RESULT_HXX
+
+#include <odb/pre.hxx>
+
+#include <cstddef> // std::size_t
+
+#include <odb/mysql/version.hxx>
+#include <odb/mysql/forward.hxx> // query, object_statements
+#include <odb/mysql/result.hxx>
+#include <odb/mysql/statement.hxx>
+
+#include <odb/details/shared-ptr.hxx>
+
+namespace odb
+{
+ namespace mysql
+ {
+ template <typename T>
+ class result_impl<T, class_object>:
+ public odb::result_impl<T, class_object>
+ {
+ public:
+ typedef odb::result_impl<T, class_object> base_type;
+
+ typedef typename base_type::pointer_type pointer_type;
+ typedef typename base_type::pointer_traits pointer_traits;
+
+ typedef typename base_type::object_type object_type;
+ typedef typename base_type::id_type id_type;
+ typedef typename base_type::object_traits object_traits;
+
+
+ virtual
+ ~result_impl ();
+
+ result_impl (const query&,
+ details::shared_ptr<select_statement>,
+ object_statements<object_type>&);
+
+ virtual void
+ load (object_type&);
+
+ virtual id_type
+ load_id ();
+
+ virtual void
+ next ();
+
+ virtual void
+ cache ();
+
+ virtual std::size_t
+ size ();
+
+ using base_type::current;
+
+ private:
+ void
+ fetch ();
+
+ private:
+ details::shared_ptr<select_statement> statement_;
+ object_statements<object_type>& statements_;
+ std::size_t count_;
+ };
+ }
+}
+
+#include <odb/mysql/object-result.txx>
+
+#include <odb/post.hxx>
+
+#endif // ODB_MYSQL_OBJECT_RESULT_HXX
diff --git a/odb/mysql/result.txx b/odb/mysql/object-result.txx
index a010458..3b0c0ca 100644
--- a/odb/mysql/result.txx
+++ b/odb/mysql/object-result.txx
@@ -1,4 +1,4 @@
-// file : odb/mysql/result.txx
+// file : odb/mysql/object-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
@@ -6,22 +6,24 @@
#include <odb/callback.hxx>
#include <odb/exceptions.hxx>
+#include <odb/mysql/object-statements.hxx>
+
namespace odb
{
namespace mysql
{
template <typename T>
- result_impl<T>::
+ result_impl<T, class_object>::
~result_impl ()
{
}
template <typename T>
- result_impl<T>::
+ result_impl<T, class_object>::
result_impl (const query&,
details::shared_ptr<select_statement> statement,
object_statements<object_type>& statements)
- : odb::result_impl<T> (statements.connection ().database ()),
+ : base_type (statements.connection ().database ()),
statement_ (statement),
statements_ (statements),
count_ (0)
@@ -29,7 +31,7 @@ namespace odb
}
template <typename T>
- void result_impl<T>::
+ void result_impl<T, class_object>::
load (object_type& obj)
{
if (count_ > statement_->fetched ())
@@ -67,7 +69,8 @@ namespace odb
}
template <typename T>
- typename result_impl<T>::id_type result_impl<T>::
+ typename result_impl<T, class_object>::id_type
+ result_impl<T, class_object>::
load_id ()
{
if (count_ > statement_->fetched ())
@@ -77,7 +80,7 @@ namespace odb
}
template <typename T>
- void result_impl<T>::
+ void result_impl<T, class_object>::
next ()
{
this->current (pointer_type ());
@@ -96,7 +99,7 @@ namespace odb
}
template <typename T>
- void result_impl<T>::
+ void result_impl<T, class_object>::
fetch ()
{
// If the result is cached, the image can grow between calls
@@ -157,7 +160,7 @@ namespace odb
}
template <typename T>
- void result_impl<T>::
+ void result_impl<T, class_object>::
cache ()
{
if (!statement_->cached ())
@@ -170,7 +173,7 @@ namespace odb
}
template <typename T>
- std::size_t result_impl<T>::
+ std::size_t result_impl<T, class_object>::
size ()
{
if (!statement_->cached ())
diff --git a/odb/mysql/object-statements.hxx b/odb/mysql/object-statements.hxx
index 3f3196d..cd06010 100644
--- a/odb/mysql/object-statements.hxx
+++ b/odb/mysql/object-statements.hxx
@@ -16,11 +16,12 @@
#include <odb/traits.hxx>
#include <odb/cache-traits.hxx>
+#include <odb/details/shared-ptr.hxx>
+
#include <odb/mysql/mysql.hxx>
#include <odb/mysql/version.hxx>
#include <odb/mysql/statement.hxx>
-
-#include <odb/details/shared-ptr.hxx>
+#include <odb/mysql/statements-base.hxx>
#include <odb/mysql/details/export.hxx>
@@ -28,22 +29,11 @@ namespace odb
{
namespace mysql
{
- class connection;
-
- class LIBODB_MYSQL_EXPORT object_statements_base:
- public details::shared_base
+ class LIBODB_MYSQL_EXPORT object_statements_base: public statements_base
{
- public:
- typedef mysql::connection connection_type;
-
- connection_type&
- connection ()
- {
- return conn_;
- }
-
// Locking.
//
+ public:
void
lock ()
{
@@ -70,7 +60,7 @@ namespace odb
protected:
object_statements_base (connection_type& conn)
- : conn_ (conn), locked_ (false)
+ : statements_base (conn), locked_ (false)
{
}
@@ -91,7 +81,6 @@ namespace odb
};
protected:
- connection_type& conn_;
bool locked_;
};
diff --git a/odb/mysql/query.hxx b/odb/mysql/query.hxx
index 0fea50c..17aa724 100644
--- a/odb/mysql/query.hxx
+++ b/odb/mysql/query.hxx
@@ -1773,7 +1773,7 @@ namespace odb
namespace odb
{
template <typename T>
- class query<T, mysql::query>: public object_traits<T>::query_type
+ class query<T, mysql::query>: public query_selector<T>::type
{
public:
// We don't define any typedefs here since they may clash with
@@ -1786,40 +1786,40 @@ namespace odb
explicit
query (const std::string& q)
- : object_traits<T>::query_type (q)
+ : query_selector<T>::type (q)
{
}
template <typename T2>
explicit
query (mysql::val_bind<T2> v)
- : object_traits<T>::query_type (mysql::query (v))
+ : query_selector<T>::type (mysql::query (v))
{
}
template <typename T2>
explicit
query (mysql::ref_bind<T2> r)
- : object_traits<T>::query_type (mysql::query (r))
+ : query_selector<T>::type (mysql::query (r))
{
}
query (const mysql::query& q)
- : object_traits<T>::query_type (q)
+ : query_selector<T>::type (q)
{
}
template <mysql::database_type_id ID>
query (const mysql::query_column<bool, ID>& qc)
- : object_traits<T>::query_type (qc)
+ : query_selector<T>::type (qc)
{
}
std::string
clause () const
{
- return object_traits<T>::query_type::clause (
- object_traits<T>::table_name);
+ return query_selector<T>::type::clause (
+ query_selector<T>::table_name ());
}
};
}
diff --git a/odb/mysql/result.hxx b/odb/mysql/result.hxx
index ebc3e02..33df541 100644
--- a/odb/mysql/result.hxx
+++ b/odb/mysql/result.hxx
@@ -8,72 +8,28 @@
#include <odb/pre.hxx>
-#include <cstddef> // std::size_t
-
+#include <odb/traits.hxx>
#include <odb/result.hxx>
#include <odb/mysql/version.hxx>
#include <odb/mysql/forward.hxx>
-#include <odb/mysql/statement.hxx>
-
-#include <odb/details/shared-ptr.hxx>
namespace odb
{
namespace mysql
{
- class query;
-
- template <typename T>
- class result_impl: public odb::result_impl<T>
- {
- public:
- typedef typename odb::result_impl<T>::pointer_type pointer_type;
- typedef typename odb::result_impl<T>::pointer_traits pointer_traits;
-
- typedef typename odb::result_impl<T>::object_type object_type;
- typedef typename odb::result_impl<T>::id_type id_type;
- typedef typename odb::result_impl<T>::object_traits object_traits;
-
-
- virtual
- ~result_impl ();
-
- result_impl (const query&,
- details::shared_ptr<select_statement> statement,
- object_statements<object_type>& statements);
-
- virtual void
- load (object_type&);
-
- virtual id_type
- load_id ();
-
- virtual void
- next ();
-
- virtual void
- cache ();
-
- virtual std::size_t
- size ();
-
- using odb::result_impl<T>::current;
-
- private:
- void
- fetch ();
-
- private:
- details::shared_ptr<select_statement> statement_;
- object_statements<object_type>& statements_;
- std::size_t count_;
- };
+ template <typename T, class_kind kind>
+ class result_impl;
}
}
-#include <odb/mysql/result.txx>
-
#include <odb/post.hxx>
#endif // ODB_MYSQL_RESULT_HXX
+
+// Include result specializations so that the user code only needs
+// to include this header.
+//
+
+#include <odb/mysql/object-result.hxx>
+#include <odb/mysql/view-result.hxx>
diff --git a/odb/mysql/statement-cache.hxx b/odb/mysql/statement-cache.hxx
index 681bcf2..d5ede48 100644
--- a/odb/mysql/statement-cache.hxx
+++ b/odb/mysql/statement-cache.hxx
@@ -14,7 +14,9 @@
#include <odb/forward.hxx>
#include <odb/mysql/version.hxx>
+#include <odb/mysql/statements-base.hxx>
#include <odb/mysql/object-statements.hxx>
+#include <odb/mysql/view-statements.hxx>
#include <odb/details/shared-ptr.hxx>
#include <odb/details/type-info.hxx>
@@ -37,7 +39,7 @@ namespace odb
template <typename T>
object_statements<T>&
- find ()
+ find_object ()
{
map::iterator i (map_.find (&typeid (T)));
@@ -51,9 +53,25 @@ namespace odb
return *p;
}
+ template <typename T>
+ view_statements<T>&
+ find_view ()
+ {
+ map::iterator i (map_.find (&typeid (T)));
+
+ if (i != map_.end ())
+ return static_cast<view_statements<T>&> (*i->second);
+
+ details::shared_ptr<view_statements<T> > p (
+ new (details::shared) view_statements<T> (conn_));
+
+ map_.insert (map::value_type (&typeid (T), p));
+ return *p;
+ }
+
private:
typedef std::map<const std::type_info*,
- details::shared_ptr<object_statements_base>,
+ details::shared_ptr<statements_base>,
details::type_info_comparator> map;
connection& conn_;
diff --git a/odb/mysql/statements-base.cxx b/odb/mysql/statements-base.cxx
new file mode 100644
index 0000000..02d9b45
--- /dev/null
+++ b/odb/mysql/statements-base.cxx
@@ -0,0 +1,17 @@
+// file : odb/mysql/statements-base.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 <odb/mysql/statements-base.hxx>
+
+namespace odb
+{
+ namespace mysql
+ {
+ statements_base::
+ ~statements_base ()
+ {
+ }
+ }
+}
diff --git a/odb/mysql/statements-base.hxx b/odb/mysql/statements-base.hxx
new file mode 100644
index 0000000..24f5cb2
--- /dev/null
+++ b/odb/mysql/statements-base.hxx
@@ -0,0 +1,51 @@
+// file : odb/mysql/statements-base.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_MYSQL_STATEMENTS_BASE_HXX
+#define ODB_MYSQL_STATEMENTS_BASE_HXX
+
+#include <odb/pre.hxx>
+
+#include <odb/details/shared-ptr.hxx>
+
+#include <odb/mysql/version.hxx>
+#include <odb/mysql/forward.hxx> // connection
+
+#include <odb/mysql/details/export.hxx>
+
+namespace odb
+{
+ namespace mysql
+ {
+ class LIBODB_MYSQL_EXPORT statements_base: public details::shared_base
+ {
+ public:
+ typedef mysql::connection connection_type;
+
+ connection_type&
+ connection ()
+ {
+ return conn_;
+ }
+
+ public:
+ virtual
+ ~statements_base ();
+
+ protected:
+ statements_base (connection_type& conn)
+ : conn_ (conn)
+ {
+ }
+
+ protected:
+ connection_type& conn_;
+ };
+ }
+}
+
+#include <odb/post.hxx>
+
+#endif // ODB_MYSQL_STATEMENTS_BASE_HXX
diff --git a/odb/mysql/view-result.hxx b/odb/mysql/view-result.hxx
new file mode 100644
index 0000000..890ca42
--- /dev/null
+++ b/odb/mysql/view-result.hxx
@@ -0,0 +1,74 @@
+// file : odb/mysql/view-result.hxx
+// author : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC
+// license : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef ODB_MYSQL_VIEW_RESULT_HXX
+#define ODB_MYSQL_VIEW_RESULT_HXX
+
+#include <odb/pre.hxx>
+
+#include <cstddef> // std::size_t
+
+#include <odb/mysql/version.hxx>
+#include <odb/mysql/forward.hxx> // query, view_statements
+#include <odb/mysql/result.hxx>
+#include <odb/mysql/statement.hxx>
+
+#include <odb/details/shared-ptr.hxx>
+
+namespace odb
+{
+ namespace mysql
+ {
+ template <typename T>
+ class result_impl<T, class_view>: public odb::result_impl<T, class_view>
+ {
+ public:
+ typedef odb::result_impl<T, class_view> base_type;
+
+ typedef typename base_type::pointer_type pointer_type;
+ typedef typename base_type::pointer_traits pointer_traits;
+
+ typedef typename base_type::view_type view_type;
+ typedef typename base_type::view_traits view_traits;
+
+
+ virtual
+ ~result_impl ();
+
+ result_impl (const query&,
+ details::shared_ptr<select_statement>,
+ view_statements<view_type>&);
+
+ virtual void
+ load (view_type&);
+
+ virtual void
+ next ();
+
+ virtual void
+ cache ();
+
+ virtual std::size_t
+ size ();
+
+ using base_type::current;
+
+ private:
+ void
+ fetch ();
+
+ private:
+ details::shared_ptr<select_statement> statement_;
+ view_statements<view_type>& statements_;
+ std::size_t count_;
+ };
+ }
+}
+
+#include <odb/mysql/view-result.txx>
+
+#include <odb/post.hxx>
+
+#endif // ODB_MYSQL_VIEW_RESULT_HXX
diff --git a/odb/mysql/view-result.txx b/odb/mysql/view-result.txx
new file mode 100644
index 0000000..51f3d6f
--- /dev/null
+++ b/odb/mysql/view-result.txx
@@ -0,0 +1,152 @@
+// file : odb/mysql/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/mysql/view-statements.hxx>
+
+namespace odb
+{
+ namespace mysql
+ {
+ template <typename T>
+ result_impl<T, class_view>::
+ ~result_impl ()
+ {
+ }
+
+ template <typename T>
+ result_impl<T, class_view>::
+ result_impl (const query&,
+ details::shared_ptr<select_statement> statement,
+ view_statements<view_type>& statements)
+ : base_type (statements.connection ().database ()),
+ statement_ (statement),
+ statements_ (statements),
+ count_ (0)
+ {
+ }
+
+ template <typename T>
+ void result_impl<T, class_view>::
+ load (view_type& view)
+ {
+ if (count_ > statement_->fetched ())
+ fetch ();
+
+ odb::database& db (this->database ());
+ view_traits::callback (db, view, callback_event::pre_load);
+
+ typename view_traits::image_type& i (statements_.image ());
+ view_traits::init (view, i);
+
+ view_traits::callback (db, view, callback_event::post_load);
+ }
+
+ template <typename T>
+ void result_impl<T, class_view>::
+ next ()
+ {
+ this->current (pointer_type ());
+
+ // If we are cached, simply increment the position and
+ // postpone the actual row fetching until later. This way
+ // if the same view is loaded in between iteration, the
+ // image won't be messed up.
+ //
+ count_++;
+
+ if (statement_->cached ())
+ this->end_ = count_ > statement_->result_size ();
+ else
+ fetch ();
+ }
+
+ template <typename T>
+ void result_impl<T, class_view>::
+ fetch ()
+ {
+ // If the result is cached, the image can grow between calls
+ // to fetch() as a result of other statements execution.
+ //
+ if (statement_->cached ())
+ {
+ 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++;
+ }
+ }
+
+ while (!this->end_ && count_ > statement_->fetched ())
+ {
+ select_statement::result r (statement_->fetch ());
+
+ switch (r)
+ {
+ case select_statement::truncated:
+ {
+ // Don't re-fetch data we are skipping.
+ //
+ if (count_ != statement_->fetched ())
+ continue;
+
+ typename view_traits::image_type& im (statements_.image ());
+
+ 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_->refetch ();
+ }
+ // Fall throught.
+ }
+ case select_statement::success:
+ {
+ break;
+ }
+ case select_statement::no_data:
+ {
+ this->end_ = true;
+ break;
+ }
+ }
+ }
+ }
+
+ template <typename T>
+ void result_impl<T, class_view>::
+ cache ()
+ {
+ if (!statement_->cached ())
+ {
+ statement_->cache ();
+
+ if (count_ >= statement_->result_size ())
+ this->end_ = true;
+ }
+ }
+
+ template <typename T>
+ std::size_t result_impl<T, class_view>::
+ size ()
+ {
+ if (!statement_->cached ())
+ throw result_not_cached ();
+
+ return statement_->result_size ();
+ }
+ }
+}
diff --git a/odb/mysql/view-statements.hxx b/odb/mysql/view-statements.hxx
new file mode 100644
index 0000000..5a07b34
--- /dev/null
+++ b/odb/mysql/view-statements.hxx
@@ -0,0 +1,106 @@
+// file : odb/mysql/view-statements.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_MYSQL_VIEW_STATEMENTS_HXX
+#define ODB_MYSQL_VIEW_STATEMENTS_HXX
+
+#include <odb/pre.hxx>
+
+#include <cstddef> // std::size_t
+
+#include <odb/forward.hxx>
+#include <odb/traits.hxx>
+
+#include <odb/details/shared-ptr.hxx>
+
+#include <odb/mysql/mysql.hxx>
+#include <odb/mysql/version.hxx>
+#include <odb/mysql/statement.hxx>
+#include <odb/mysql/statements-base.hxx>
+
+namespace odb
+{
+ namespace mysql
+ {
+ template <typename T>
+ class view_statements: public statements_base
+ {
+ public:
+ typedef T view_type;
+ typedef odb::view_traits<view_type> view_traits;
+ typedef typename view_traits::pointer_type pointer_type;
+ typedef typename view_traits::image_type image_type;
+
+ typedef mysql::select_statement query_statement_type;
+
+ public:
+ view_statements (connection_type&);
+
+ // View image.
+ //
+ image_type&
+ image ()
+ {
+ return image_;
+ }
+
+ std::size_t
+ image_version () const
+ {
+ return image_version_;
+ }
+
+ void
+ image_version (std::size_t v)
+ {
+ image_version_ = v;
+ }
+
+ binding&
+ image_binding ()
+ {
+ return image_binding_;
+ }
+
+ my_bool*
+ image_truncated ()
+ {
+ return image_truncated_;
+ }
+
+ query_statement_type&
+ query_statement ()
+ {
+ if (query_ == 0)
+ query_.reset (
+ new (details::shared) query_statement_type (
+ conn_,
+ view_traits::query_statement,
+ image_binding_));
+
+ return *query_;
+ }
+
+ private:
+ view_statements (const view_statements&);
+ view_statements& operator= (const view_statements&);
+
+ private:
+ image_type image_;
+ std::size_t image_version_;
+ binding image_binding_;
+ MYSQL_BIND image_bind_[view_traits::column_count];
+ my_bool image_truncated_[view_traits::column_count];
+
+ details::shared_ptr<query_statement_type> query_;
+ };
+ }
+}
+
+#include <odb/mysql/view-statements.txx>
+
+#include <odb/post.hxx>
+
+#endif // ODB_MYSQL_VIEW_STATEMENTS_HXX
diff --git a/odb/mysql/view-statements.txx b/odb/mysql/view-statements.txx
new file mode 100644
index 0000000..36f5045
--- /dev/null
+++ b/odb/mysql/view-statements.txx
@@ -0,0 +1,29 @@
+// file : odb/mysql/view-statements.txx
+// author : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
+// license : GNU GPL v2; see accompanying LICENSE file
+
+#include <cstddef> // std::size_t
+#include <cstring> // std::memset
+
+namespace odb
+{
+ namespace mysql
+ {
+ template <typename T>
+ view_statements<T>::
+ view_statements (connection_type& conn)
+ : statements_base (conn),
+ image_binding_ (image_bind_, view_traits::column_count)
+ {
+ image_.version = 0;
+ image_version_ = 0;
+
+ std::memset (image_bind_, 0, sizeof (image_bind_));
+ std::memset (image_truncated_, 0, sizeof (image_truncated_));
+
+ for (std::size_t i (0); i < view_traits::column_count; ++i)
+ image_bind_[i].error = image_truncated_ + i;
+ }
+ }
+}