In 1988, I started to collect a database of all of the books that I owned. I did this in WordPerfect with Mail Merge.
Fastforward to 2010. I’ve rewritten this database many times using SQL, Java, Swing, Ruby on Rails, with and without testing, with and without patterns. I now have three databases for books, movies, and tv shows that I own and have read/seen. My most successful version to date has been a Java Swing app which would store to PostgreSQL databases. I was able to collect quite a bit of data this way.
I now want to do this in Ruby on Rails. However, I have a lot of data already in my PostgreSQL databases, and they are not well designed for Rails, and refactoring them would be too easy. I must learn other technologies as well! So I’m headed for Rails 3 and MongoDB. And CouchDB if I get bored.
You should follow my blog, where I will be blogging about my exciting adventures.
The code in this repository gets the data from my three PostgreSQL databases and transfers it into one MongoDB database. I use ActiveRecord to access my PostgreSQL databases. I use MongoMapper to access my MongoDB.
I have a reporting script that will generate Textile output so that I can see for myself that my MongoDB database has the data I think it should.
I may also have transfer and report scripts that work with CouchDB.
Check out my blog which will point you to content based on topic.
Good question. This is a spike and/or a one-off.
It’s a spike for me to play around with MongoDB and MongoMapper. As I get into the two, I get more curious about CouchDB and its Ruby wrappers.
It’s a one-off for me to move my data from my PostgreSQL databases into a single MongoDB (or CouchDB) database.
There will be one day when I run my transfer code one last time, and then never look at this code again. And, if to my surprise, I do continue using this code, then my promise to you is that I will destroy this repository, and create a new one with tests.
I may rant about this more on my blog.
Perhaps you were referred here by my blog.
I think you should look at this repository to tell me how badly I’m doing MongoDB, MongoMapper, and any other technology.
Also, if you’re anything like me, you learn mostly and best from examples. Here you go! Here are some examples of MongoDB and MongoMapper.
The data from my databases.
And my blog (have I mentioned it lately?).