JBoss: A Developer's Notebook by Norman Richards

By Norman Richards

JBoss is an open resource J2EE program server that has completed a specific amount of industrial luck. during this quantity Richards (a JBoss developer at JBoss Inc.) and Griffith (a software program improvement advisor) current an example-driven consultant that demonstrates the code used for fitting and working JBoss, deploying an software, making a whole program, connecting to a true database, making use of defense, logging, configuring patience, handling and tracking JBoss.

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Additional info for JBoss: A Developer's Notebook

Sample text

Xmlfile. xml file. You also got to see hot deploy in action. Plus, you got a few tidbits of advice from the great Einstein himself. 32 33 Modifying the Deployed Application Hot deployment allows you to rapidly deploy an application in JBoss by simply placing the application in the deploy directory. JBoss quickly sees the application and deploys it, but ideally you would like to be able to make changes to a live application without deployment delays, no matter how small. How do I do that? JBoss unpacks those pesky J2EE archives into the tmp/deploy directory.

But the most important thing is that the application is really up and running in JBoss. Note: J2EE with no configuration? It hardly seems possible. What just happened? The ToDo application has been deployed and all the J2EE services are functioning. Transactions and security are wired up and JBoss has even created the database tables in which it needs to store entity bean data. That last feature is pretty amazing, considering we haven't configured anything related to the database yet. In fact, it is interesting enough that we should spend a little more time looking at how JBoss is storing the EJB data.

Xml. If you choose QuoteServlet, you will see servlet statistics about it, including the number of times it has been invoked (see Figure 2-6). Developer's Notebook 2-6. Servlet statistics 35 36 If you have not closed your web browser, you can reload the application at http://localhost:8080/quote/quote and then click QuoteServlet again to cause the web console application to refresh, at which point you should see the "# Invocations" count go up (see Figure 2-7). What just happened? You just saw the JBoss web console and your application deployed onto the server.

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