relation completer progress

demo/sandbox.cpp

@@ -5,20 +5,19 @@
 #include "author.hpp"
 #include "book.hpp"
 
+#include <iostream>
 
 /*
  *  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"
@@ -32,29 +31,50 @@
  *  - 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)
+ *  - register endpoint in authors node by type book
  *  - attach (internal) node<many_to_many_relation<author, book>>
  *
  *  attach<book>
  *  - relation completer detects "belongs_to<author>"
  *  - belongs_to<author> finds <book>
+ *  - try to find relation endpoint of type book in authors node
+ *  - if endpoint was found
+ *    - validate node in endpoint
+ *    - if node is of type many_to_many_relation
+ *      - detach node of endpoint
+ *      - update node in endpoint to <book>
+ *  - else
+ *    - create endpoint <book> (1)
+ *    - create endpoint <author> (2)
+ *    - set foreign endpoint of (1) to endpoint (2)
+ *    - set foreign endpoint of (2) to endpoint (1)
  *  - check relation endpoints...
- *
- *
- *
  */
 using namespace demo;
 using namespace matador;
-int main() {
-    logger::default_min_log_level(logger::log_level::LVL_DEBUG);
-    logger::add_log_sink(logger::create_stdout_sink());
 
+int main() {
+  logger::default_min_log_level(logger::log_level::LVL_DEBUG);
+  logger::add_log_sink(logger::create_stdout_sink());
+
+  {
     object::schema schema;
 
     auto result = schema.attach<author>("authors")
         .and_then([&schema] { return schema.attach<book>("books"); });
-}
+
+    schema.dump(std::cout);
+  }
+  {
+    object::schema schema;
+
+    auto result = schema.attach<book>("books")
+        .and_then([&schema] { return schema.attach<author>("authors"); });
+
+    schema.dump(std::cout);
+  }
+}