1 files changed, 0 insertions, 202 deletions
diff --git a/example/describe.cpp b/example/describe.cpp
deleted file mode 100644
index 9b00f8b..0000000
--- a/example/describe.cpp
+++ /dev/null
@@ -1,202 +0,0 @@
-//
-// Copyright (c) 2022 Klemens Morgenstern (klemens.morgenstern@gmx.net)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#include <boost/sqlite.hpp>
-#include <boost/unordered_map.hpp>
-#include <boost/describe.hpp>
-#include <boost/variant2/variant.hpp>
-
-#include <iomanip>
-#include <iostream>
-
-// This example shows how a virtual table can be created using boost.describe
-
-using namespace boost;
-
-// add more conversions here if you need more types in the described struct
-void assign_value(std::int64_t & res, sqlite::value val) { res = val.get_int();}
-void assign_value(std::string & res, sqlite::value val) { res = val.get_text();}
-
-template<typename T>
-struct describe_cursor final : sqlite::vtab::cursor<>
-{
-  describe_cursor(
-      typename boost::unordered_map<sqlite3_int64, T>::const_iterator itr,
-      typename boost::unordered_map<sqlite3_int64, T>::const_iterator end
-      ) : itr(itr), end(end)
-  {
-  }
-
-  typename boost::unordered_map<sqlite3_int64, T>::const_iterator itr, end;
-  constexpr static std::size_t column_count = mp11::mp_size<describe::describe_members<T, describe::mod_any_access>>::value;
-
-  sqlite::result<void> next() {itr++; return {};}
-  sqlite::result<sqlite3_int64> row_id() {return itr->first;}
-
-  void column(sqlite::context<> ctx, int i, bool /* no_change */)
-  {
-    mp11::mp_with_index<column_count>(
-        i, [&](auto Idx)
-        {
-          using type = mp11::mp_at_c<describe::describe_members<T, describe::mod_public>, Idx>;
-          ctx.set_result(itr->second.*type::pointer);
-        });
-  }
-
-  bool eof() noexcept {return itr == end;}
-};
-
-template<typename T>
-struct describe_table final :
-    sqlite::vtab::table<describe_cursor<T>>,
-    sqlite::vtab::modifiable
-{
-  boost::unordered_map<sqlite3_int64, T> &data;
-  describe_table(boost::unordered_map<sqlite3_int64, T> &data) : data(data) {}
-
-  std::string decl;
-  const char * declaration()
-  {
-    if (!decl.empty())
-      return decl.c_str();
-    mp11::mp_for_each<describe::describe_members<T, describe::mod_public>>(
-        [&](auto elem)
-        {
-            if (decl.empty())
-              decl += "create table x(";
-            else
-              decl += ", ";
-
-            decl += elem.name;
-        });
-    decl += ");";
-    return decl.c_str();
-  }
-
-
-  sqlite3_int64 last_index = 0;
-
-  sqlite::result<describe_cursor<T>> open()
-  {
-    return describe_cursor<T>{data.begin(), data.end()};
-  }
-
-  sqlite::result<void> delete_(sqlite::value key)
-  {
-    data.erase(key.get_int());
-    return {};
-  }
-  sqlite::result<sqlite_int64> insert(sqlite::value key, span<sqlite::value> values, int /*on_conflict*/)
-  {
-    T res;
-    sqlite_int64 id = key.is_null() ? last_index++ : key.get_int();
-    auto vtr = values.begin();
-    mp11::mp_for_each<describe::describe_members<T, describe::mod_public>>(
-        [&](auto elem)
-        {
-          assign_value(res.*elem.pointer , *vtr);
-          vtr++;
-        });
-
-    auto itr = data.emplace(id, std::move(res)).first;
-    return itr->first;
-
-  }
-  sqlite::result<sqlite_int64> update(sqlite::value old_key, sqlite::value new_key,
-                      span<sqlite::value> values, int /*on_conflict*/)
-  {
-    if (new_key.get_int() != old_key.get_int())
-      data.erase(old_key.get_int());
-    auto & res = data[new_key.get_int()];
-
-    auto vtr = values.begin();
-    mp11::mp_for_each<describe::describe_members<T, describe::mod_public>>(
-        [&](auto elem)
-        {
-          assign_value(res.*elem.pointer , *vtr);
-          vtr++;
-        });
-    return 0u;
-  }
-};
-
-template<typename T>
-struct describe_module final : sqlite::vtab::eponymous_module<describe_table<T>>
-{
-  boost::unordered_map<sqlite3_int64, T> data;
-  constexpr static std::size_t column_count = mp11::mp_size<describe::describe_members<T, describe::mod_any_access>>::value;
-  sqlite::result<describe_table<T>> connect(sqlite::connection ,
-                                            int, const char * const [])
-  {
-    return describe_table<T>{data};
-  }
-};
-
-
-void print_table(std::ostream & str, sqlite::resultset res)
-{
-  for (auto i = 0u; i < res.column_count(); i ++)
-    str << "| " << std::setfill(' ') << std::setw(15) << res.column_name(i) << " ";
-
-  str << "|\n";
-
-  for (auto i = 0u; i < res.column_count(); i ++)
-    str << "|-----------------";
-  str << "|\n";
-
-  for (auto && r : res)
-  {
-    for (auto i = 0u; i < res.column_count(); i ++)
-      str << "| " << std::setfill(' ') << std::setw(15) << r.at(i).get_text() << " ";
-
-    str << "|\n" ;
-  }
-  str << std::endl;
-}
-
-
-struct boost_library
-{
-  std::string name;
-  std::int64_t first_released;
-  std::int64_t standard;
-};
-
-BOOST_DESCRIBE_STRUCT(boost_library, (), (name, first_released, standard));
-
-
-int main (int /*argc*/, char * /*argv*/[])
-{
-  sqlite::connection conn{":memory:"};
-  auto & md = sqlite::create_module(conn, "boost_libraries", describe_module<boost_library>());
-
-  {
-    auto p = conn.prepare("insert into boost_libraries (name, first_released, standard) values ($name, $version, $std);");
-    p.execute({{"name", "process"},         {"version", 64}, {"std", 11}});
-    p.execute({{"name", "asio"},            {"version", 35}, {"std", 98}});
-    p.execute({{"name", "bimap"},           {"version", 35}, {"std", 98}});
-    p.execute({{"name", "circular_buffer"}, {"version", 35}, {"std", 98}});
-    p.execute({{"name", "mpi"},             {"version", 35}, {"std", 98}});
-    p.execute({{"name", "beast"},           {"version", 66}, {"std", 11}});
-    p.execute({{"name", "describe"},        {"version", 77}, {"std", 14}});
-  }
-
-
-  print_table(std::cout, conn.query("select * from boost_libraries;"));
-
-  // same as conn.execute("update boost_libraries set standard = 11 where standard = 98;");
-  for (auto & p : md.data)
-    if (p.second.standard == 98)
-      p.second.standard = 11;
-
-  print_table(std::cout, conn.query("select * from boost_libraries;"));
-
-  conn.prepare("delete from boost_libraries where name = ?").execute({"mpi"});
-  print_table(std::cout, conn.query("select * from boost_libraries;"));
-
-  return 0;
-}