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POWhich is the best database strategy for a JRuby on Rails + legacy Java code?
 

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  1. POWhich is the best database strategy for a JRuby on Rails + legacy Java code?
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    <p>We have a medium size Java application that needs some refactoring.</p> <p>We are considering migrating towards JRuby on Rails. Mainly because of the productivity that Ruby on Rails offers and for the many existing plugins that will reimplement the web logic.</p> <p>However a large part of the application should stay in Java, we do not want to rewrite all the business logic (specially since it uses many Java technologies such as RMI).</p> <p>A key point for our refactoring is sanitizing our database management, which is currently a mix of hand coded SQL operations and some objects stored in db4o.</p> <p>From JRuby we can call any legacy java code. Great!</p> <p>However many Ruby on Rails plugins asume the use of ActiveRecord to manage the database. <em>Accessing the ActiveRecord data from Java seems non trivial.</em></p> <p><strong>Which is best strategy to manage the database between JRuby on Rails and the legacy Java code?</strong></p> <ul> <li>We could use db4o for everything, but would loose the benefit of some Ruby on Rails plugins, and would need to manage objects "manually" on the Ruby side</li> <li>We could use ActiveRecord for everything and define some kind redundant mapping on the Java side. Which would be the best strategy?</li> <li>We would use a Java ORM technology (Hibernate, Cayenne?) and then map the model in ActiveRecord. How does this idea compare to the previous one?</li> <li>Can we do some magic using Jruby 1.4 become_java!?</li> </ul> <p><em>What do you think?</em> </p>
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    1. CO+1, darn good question: I won't be surprised to see a lot more of just this kind of activity in the near future.
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