arthasgo / tdmodel
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access large scaled legacy database by dynamic ORM
tdmodel /
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MIT-LICENSE | Loading commit data...  |
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README | Mon Oct 26 05:59:24 -0700 2009 | |
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doc/ | Mon Oct 26 04:58:08 -0700 2009 | |
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example/ | Mon Oct 26 04:58:08 -0700 2009 | |
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install.rb | Mon Oct 26 04:58:08 -0700 2009 | |
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uninstall.rb |
README
Tdmodel
=======
Create ORM(Object-Relation Mapping) dynamic for legacy database defined in data model(a *.yml file);
Create default ORM which is not defined in data model;
Support concurrent multiple databases access by using magic_multi_connections gem;
Support charset auto-transforming between rails utf8 and database local charset, such as GBK;
Example
=======
refer to tdmodel_example which is located in example
1. define data model
<tdmodel_example>\config\legacy_db\dm.yml
2. config legacy database
<tdmodel_example>\config\legacy_db\db.yml
3. Access legacy database defined in data model
book = Book.find :first
book = BOOK_DB1::Book.find :first
book = BOOK_DB2::Book.find :first
4. Access data table which is not defined in data model
If there is a data table 'shops' in book_db1, but not defined in data model.
Tdmodel will create a default ORM for it:
model = DBLayer.orm("shops") # Shop will be created
shop = Shop.find :first
5. gem dependencies
magic_multi_connections
Copyright (c) 2009 taobao, released under the MIT license