Yii One relation for multiple tables - php

Question

I am trying to write a customized relation that uses multiple tables, and this relation neeeds to join to the other tables by using a key from the first table.
Each table has the same columns.
So, let the story begin:
I am developing a online strategy based game. (PBBG - Persistant Browser Based Game)
I had a big table (30.000.000 rows) and I have split that table in 100 smaller tables (300.000 rows in each table).
The action happens within villages.
Details about the villages are stored within the village table.
Each village is situated within a continent, so there is a k number that gives me the continent that the village belongs to.
The village table has the following columns:
id - p.k.
x - x position on map
y - y position on map
k - f.k. continent id
name
user_id f.k.
points
I have 100 continents, that's why i have 100 new smaller tables.
I also have a table where I store the details for all the buildings.
The building details were stored within the village_building table.
So, from the original table village_building i now have village_building_k1, village_building_k2, ..., village_building_k100.
A village_building_k... table has the following columns:
id - p.k.
village_id - f.k.
building_id - f.k.
Now, I am trying to write a relation that jumps from model village to model village_building_kX where X should change when needed.
If I could use the k value from model village, that would give me the name of the table that i need to join.
If k = 2, the i need to jump from village to village_building_k2 using a concat
public function tableName() {
return 'village_building_k' . self::$k;
}
public function relations() {
return array(
'relation_village_building' => array(self::HAS_MANY, 'VillageBuildingKXSlaveM', 'village_id'),
);
}
$model_village->relation_village_building->building_id

Answer 1

Are you sure, that you need to solve this problem on framework level? I suggest to use here something like http://en.wikipedia.org/wiki/Shard_(database_architecture)

Answer 2

I think you need to add some shared databases. Due to your big database you can't manage it by your framework. Just try shared database for manage databases. Also you can try mysql cluster for manage database Follow this link and
this This may be helpful for you. Remember one frameworks are some set of functions so that you can to manipulate your function with your codes and supporting environment like databases and etc.

Answer 3

Actually you can try to pass db name from some global parameters, for example from session.
public function tableName()
{
return 'village_building_k' . Yii::app()->session['table'];
}
Problem is to save session for your gamer long time. If you'll get alot of users, it will become a problem.
If you have few tables with same structure, probably your database architecture is wrong. If it was sharding, you need to change AR for this.
Main problem in yii and sharding is that AR in __construct() calls getMetaData() to get table schema, so you need table name in that level.
Search on forums for solutions, i personally didn't found good article on english. Here is article about horizontal sharding realisation with Yii and Redis here. It's on Russian, but you can watch atleast some code.
And 30.000.000 table is ok, if you'll work right way with it, even in mysql.