query/demo/sandbox.cpp

60 lines
1.6 KiB
C++

#include "matador/object/schema.hpp"
#include "matador/logger/log_manager.hpp"
#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() {
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"); });
}