progress on relation completer

demo/author.hpp

@@ -18,7 +18,6 @@ struct author {
     bool distinguished{false};
     matador::object::collection<matador::object::object_ptr<book>> books;
 
-
     template<typename Operator>
     void process( Operator& op ) {
         namespace field = matador::access;
@@ -28,7 +27,7 @@ struct author {
         field::attribute( op, "date_of_birth", date_of_birth, 31 );
         field::attribute( op, "year_of_birth", year_of_birth );
         field::attribute( op, "distinguished", distinguished );
-        field::has_many( op, "books", books, "author_id" );
+        field::has_many( op, "books", books, "author_id", matador::utils::default_foreign_attributes );
     }
 };
 }

demo/book.hpp

@@ -18,7 +18,7 @@ struct book {
         namespace field = matador::access;
         field::primary_key( op, "id", id );
         field::attribute( op, "title", title, 511 );
-        field::has_one( op, "author_id", book_author, matador::utils::default_foreign_attributes );
+        field::belongs_to( op, "author_id", book_author, matador::utils::default_foreign_attributes );
         field::attribute( op, "published_in", published_in );
     }
 };

demo/sandbox.cpp

@@ -5,6 +5,48 @@
 #include "author.hpp"
 #include "book.hpp"
 
+
+/*
+ *  node author
+ *
+ *  relation_endpoints
+ *      1. - field_name "books"
+ *         - type_index <book>
+ *         - type "has_many"
+ *         - node <author>
+ *         - foreign endpoint (1) "author"
+ *
+ *  node book
+ *      2. - field_name "author_id"
+ *         - type_index <author>
+ *         - type "belongs_to"
+ *         - node <book>
+ *         - foreign endpoint (2) "books"
+ *
+ *  Attach process:
+ *
+ *  attach<author>
+ *  - relation completer detects "has_many<book>"
+ *  - has_many<book> doesn't find <book> (not yet attached)
+ *  - create endpoint (1) without foreign endpoint
+ *  - create node many_to_many_relation<author, book>("author_id", "id")
+ *  - 3. create endpoint
+ *      - field name "author_id"
+ *      - type_index <author>
+ *      - type "belongs_to"
+ *      - node <many_to_many_relation<author, book>>
+ *      - foreign endpoint (1) "author
+ *  - set foreign endpoint of (1) to endpoint (3)
+ *  - attach (internal) node<many_to_many_relation<author, book>>
+ *
+ *  attach<book>
+ *  - relation completer detects "belongs_to<author>"
+ *  - belongs_to<author> finds <book>
+ *  - check relation endpoints...
+ *
+ *
+ *
+ */
 using namespace demo;
 using namespace matador;
 int main() {
@@ -15,5 +57,4 @@ int main() {
 
     auto result = schema.attach<author>("authors")
         .and_then([&schema] { return schema.attach<book>("books"); });
-
 }