collection resolver producer progress

include/matador/object/collection.hpp

@@ -12,6 +12,14 @@ public:
   using iterator = typename std::vector<value_type>::iterator;
   using const_iterator = typename std::vector<value_type>::const_iterator;
 
+  collection()
+  : proxy_(std::make_shared<collection_proxy<Type>>()) {}
+  explicit collection(std::shared_ptr<collection_proxy<Type>> proxy)
+  : proxy_(std::move(proxy)) {}
+  explicit collection(std::vector<Type> items)
+  : proxy_(std::make_shared<collection_proxy<Type>>(std::move(items))) {}
+  collection(const collection& other) = default;
+
   void push_back(const value_type& value) {
     proxy_->items().push_back(value);
   }

include/matador/object/collection_proxy.hpp

@@ -36,12 +36,17 @@ public:
 template<typename Type>
 class collection_proxy final {
 public:
+  collection_proxy() = default;
+
+  // Lazy
   collection_proxy(std::weak_ptr<object_resolver<typename Type::value_type>> resolver, utils::identifier owner_id)
   : owner_id_(std::move(owner_id)), resolver_(std::move(resolver)) {}
 
+  // Eager
   collection_proxy(std::weak_ptr<object_resolver<typename Type::value_type>> resolver, std::vector<Type> items)
   : items_(std::move(items)), resolver_(std::move(resolver)) {}
 
+  // Transient
   explicit collection_proxy(std::vector<Type> items)
   : items_(std::move(items)) {}
 

include/matador/object/object_resolver_factory.hpp

@@ -3,6 +3,7 @@
 
 #include "matador/object/abstract_type_resolver_factory.hpp"
 #include "matador/object/object_resolver.hpp"
+#include "matador/object/collection_resolver_factory.hpp"
 
 namespace matador::object {
 class object_resolver_factory : public abstract_type_resolver_factory {
@@ -16,6 +17,16 @@ public:
 
     return std::dynamic_pointer_cast<object_resolver<Type>>(res);
   }
+  //
+  // template<class Type>
+  // std::shared_ptr<collection_resolver<Type>> collection_resolver(const std::string &name) {
+  //   const auto res = acquire_collection_resolver(std::type_index(typeid(Type)), name);
+  //   if (!res) {
+  //     return std::dynamic_pointer_cast<collection_resolver<Type>>(res);
+  //   }
+  //
+  //   return std::dynamic_pointer_cast<collection_resolver<Type>>(res);
+  // }
 };
 }
 #endif //MATADOR_OBJECT_RESOLVER_FACTORY_HPP

source/orm/query/query_builder.cpp

@@ -36,7 +36,7 @@ sql::query_context query_builder::compile(const query_data &data,
   return {query_};
 }
 
-std::string handle_column(sql::query_context &ctx, const sql::dialect *d, const query_data &data, const table_column &col) {
+std::string handle_column(sql::query_context &ctx, const sql::dialect *d, const table_column &col) {
   if (col.is_function()) {
     ctx.prototype.emplace_back(col.has_alias() ? col.alias() : col.canonical_name());
     ctx.prototype.back().change_type(utils::basic_type::Int32);
@@ -105,14 +105,14 @@ void query_builder::visit(internal::query_select_part &part) {
       result = dialect_->asterisk();
   } else if (const auto &columns = part.columns(); columns.size() < 2) {
     for (const auto &col: columns) {
-      result.append(handle_column(query_, dialect_, *data_, col ));
+      result.append(handle_column(query_, dialect_, col ));
     }
   } else {
     auto it = columns.begin();
-    result.append(handle_column(query_, dialect_, *data_, *it++));
+    result.append(handle_column(query_, dialect_, *it++));
     for (; it != columns.end(); ++it) {
       result.append(", ");
-      result.append(handle_column(query_, dialect_, *data_, *it));
+      result.append(handle_column(query_, dialect_, *it));
     }
   }
 

test/backends/QueryTest.cpp

@@ -497,6 +497,8 @@ TEST_CASE_METHOD(QueryFixture, "Test load entity with eager has many relation",
     .and_then([this] {return repo.create(db); });
   REQUIRE(result.is_ok());
 
+  repo.initialize_executor(db);
+
   const std::vector shipments {
     object_ptr{std::make_shared<shipment>(1, "4711")},
     object_ptr{std::make_shared<shipment>(2, "0815")}
@@ -575,14 +577,90 @@ TEST_CASE_METHOD(QueryFixture, "Test load entity with eager has many relation",
 
   REQUIRE(shipment_result.is_ok());
 
-  // size_t index{0};
-  // std::vector<size_t> packages_sizes{2, 3};
-  // std::cout << "\n";
-  // for (const auto &s : *shipment_result) {
-  //   REQUIRE(s->id == shipments.at(index)->id);
-  //   REQUIRE(s->tracking_number == shipments.at(index)->tracking_number);
-  //   REQUIRE(s->packages.size() == packages_sizes.at(index++));
-  // }
+  size_t index{0};
+  std::vector<size_t> packages_sizes{2, 3};
+  std::cout << "\n";
+  for (const auto &s : *shipment_result) {
+    REQUIRE(s->id == shipments.at(index)->id);
+    REQUIRE(s->tracking_number == shipments.at(index)->tracking_number);
+    REQUIRE(s->packages.size() == packages_sizes.at(index++));
+  }
+}
+
+TEST_CASE_METHOD(QueryFixture, "Test load entity with lazy has many relation", "[query][has_many][lazy]") {
+  auto result = repo.attach<author>("authors")
+  .and_then( [this] { return repo.attach<book>("books"); } )
+  .and_then([this] {
+    return repo.create(db);
+  } );
+
+  repo.initialize_executor(db);
+
+  const std::vector authors {
+    object_ptr{std::make_shared<author>(1, "Michael", "Crichton", "23.10.1942", 1975, true)},
+    object_ptr{std::make_shared<author>( 2, "Steven", "King", "21.9.1947", 1956, false)}
+  };
+
+  const std::vector books {
+    object_ptr{std::make_shared<book>(3, "Jurassic Park", authors[0], 1990)},
+    object_ptr{std::make_shared<book>(4, "Timeline", authors[0], 1999)},
+    object_ptr{std::make_shared<book>(5, "The Andromeda Strain", authors[0], 1969)},
+    object_ptr{std::make_shared<book>(6, "Congo", authors[0], 1980)},
+    object_ptr{std::make_shared<book>(7, "Prey", authors[0], 2002)},
+    object_ptr{std::make_shared<book>(8, "Carrie", authors[1], 1974)},
+    object_ptr{std::make_shared<book>(9, "The Shining", authors[1], 1977)},
+    object_ptr{std::make_shared<book>(10, "It", authors[1], 1986)},
+    object_ptr{std::make_shared<book>(11, "Misery", authors[1], 1987)},
+    object_ptr{std::make_shared<book>(12, "The Dark Tower: The Gunslinger", authors[1], 1982)},
+  };
+
+  for (const auto &a: authors) {
+    auto res = query::insert()
+      .into(AUTHOR, {AUTHOR.id, AUTHOR.first_name, AUTHOR.last_name, AUTHOR.date_of_birth, AUTHOR.year_of_birth, AUTHOR.distinguished})
+      .values(*a)
+      .execute(db);
+    REQUIRE(res.is_ok());
+    REQUIRE(*res == 1);
+  }
+
+  auto count = query::select({count_all()})
+    .from(AUTHOR)
+    .fetch_value<int>(db);
+  REQUIRE(count.is_ok());
+  REQUIRE(*count == 2);
+
+  for (const auto &b: books) {
+    auto res = query::insert()
+      .into(BOOK, {BOOK.id, BOOK.title, BOOK.author_id, BOOK.published_in})
+      .values(*b)
+      .execute(db);
+    REQUIRE(res.is_ok());
+    REQUIRE(*res == 1);
+  }
+
+  count = query::select({count_all()})
+    .from(BOOK)
+    .fetch_value<int>(db);
+  REQUIRE(count.is_ok());
+  REQUIRE(*count == 10);
+
+  auto author_result = query::select({AUTHOR.id, AUTHOR.first_name, AUTHOR.last_name, AUTHOR.date_of_birth, AUTHOR.year_of_birth, AUTHOR.distinguished})
+    .from(AUTHOR)
+    .order_by(AUTHOR.id).asc()
+    .fetch_all<author>(db);
+
+  REQUIRE(author_result.is_ok());
+  size_t index{0};
+  for (const auto &a : *author_result) {
+    REQUIRE(a->id == authors.at(index)->id);
+    REQUIRE(a->first_name == authors.at(index)->first_name);
+    REQUIRE(a->last_name == authors.at(index)->last_name);
+    REQUIRE(a->date_of_birth == authors.at(index)->date_of_birth);
+    REQUIRE(a->year_of_birth == authors.at(index)->year_of_birth);
+    REQUIRE(a->distinguished == authors.at(index)->distinguished);
+    REQUIRE(!a->books.empty());
+    ++index;
+  }
 }
 
 TEST_CASE_METHOD(QueryFixture, "Test load entity with lazy belongs to relation", "[query][belongs_to][lazy]") {