29 August 2011

Modify massively ADF BC xml and ADF jspx pages preserving file text format (without loosing SVN history)

The Problem
ADF BC and also ADF pages are xml files. Sometimes you want to massively change all the files of your application. Typical examples are when you want to change the template of all jspx pages of your application or the bundle that all your entities and/or ViewObjects are using. You might easily do it with DOM but then you ll loose the SVN history, because DOM rewrites all the file and the text format will be lost. Other alternative is to do it by hand, but when you have 1000 of files in your application then this might take enough time.

The tool
If you want to do it automatically and modify only the part of the file that is needed (and so preserve SVN history), check my post Modifying xml without changing the text format (and so without loosing SVN history) for a small tool that I developed to help you perform this task.


25 August 2011

Cost of Ownership Analysis: Oracle WebLogic Server vs. JBoss

A very interesting whitepaper by Crimson Consulting Group comparing the cost of ownership between Weblogic and JBoss. Although JBoss is free, the whitepaper has serious claims that on the long run Weblogic is cheaper. Although, this study was sponsored by Oracle, it seems to be very serious and definitely is worthy of a look.

Below some interesting parts from the whitepaper:

JBoss costs more than WebLogic Server after 2 years and as much as 35% more over 5 years.

Key Takeaways
  • JBoss is 35% more costly than WebLogic Server over 5 years, despite its free license.
  • Oracle WebLogic Server becomes less expensive on a TCO basis within two years from acquisition – an advantage that continues to grow with every year of operation.
  • Software licensing is a small portion of the total cost of ownership; people costs in operations drive the bulk of long-term costs.
  • Other issues, such as performance, time-to-value, and customized infrastructure, can have a significant impact on the overall business ROI of an application server deployment.

 Figure 1 illustrates how small the initial costs of Acquisition and Implementation are with respect to the total 5-year costs of an application server deployment. The savings created by not paying for a software license are more than offset by having to invest in employees and consultants for implementation, development of custom scripts and utilities, configuring and testing other open source components, and managing and monitoring the JBoss environment.

Description of Cost Categories Included in Research and Analysis
Description Acquisition This category includes the hard costs for purchase of the application server software and for the hardware platform(s) to run it.
This category includes the labor costs for implementation, installation, configuration, and testing of the application servers and the related infrastructure. Ongoing Application Deployment & Testing Costs This category includes the ongoing labor costs for deploying custom applications from test and staging environments to production environments. It also includes the ongoing interoperability testing and periodic testing for new releases and updates to the application servers and other infrastructure components.
Ongoing Vendor Support Costs
This category includes the hard costs for annual subscription support or maintenance agreements for the application server software, as well as for any additional software required. Ongoing Administration & Management Costs This category includes the ongoing labor costs to configure, manage, and maintain the application servers and the related infrastructure.
Ongoing Monitoring, Diagnostics, & Tuning Costs
This category includes the ongoing labor costs to monitor, tune, and optimize the application servers. Other Cost Considerations This category includes cost considerations identified in the study but not necessarily included in the cost of ownership model. This includes the cost of unplanned downtime, time to market, and backward compatibility considerations.

Table 3 outlines the pro forma costs for a typical application server deployment, consisting of 5 server hosts (server blades with two dual-core processors each), running an average of 4 application server instances per host (one instance per core). The acquisition and on-going costs in Table 3 reflect current list prices for hardware, software and support, less an average discount of 25%, while the people costs for implementation, deployment, testing, administration, and management are based on the results of Crimson’s primary research and resulting cost model.

Table 4 shows the total costs of implementing, configuring, and customizing the two application servers. Key takeaways are:
  • JBoss implementation costs more than twice as much as WebLogic Server implementation.
  • By the end of the implementation phase, the cost of JBoss (inclusive of acquisition cost) is within 33% of the cost of WebLogic Server and operations haven’t started yet.
  • Though we haven’t tried to quantify the business cost of the delay in time-to-value associated with an extra 8.5 weeks of effort, it could clearly be substantial.

Check the whitepaper for more like Ongoing Operations which involve:
  • Application Deployment and Infrastructure Testing Costs
  • Application Server Administration, Management, Monitoring, and Tuning Costs
  • Monitoring, Diagnostics, and Tuning Costs.

  • “Out-of-the-box” configuration and implementation tools are more mature, robust, and efficient for WebLogic Server than for JBoss, with the result that time-to-value is faster, the customization needs lower, and the costs lesser than with JBoss.
  • Similarly, out-of-the-box administration, management, and tuning tools have been through as many development cycles as the core software and are consequently more complete and more productive than their equivalents in the JBoss environment.
  • Oracle takes on the responsibilities and costs of maintaining performance and backwards-integration as the software evolves; users of JBoss take on those responsibilities for themselves.
All these factors combine, with additional software-specific performance issues, to give a very different picture of the total cost of ownership in comparison to the initial acquisition costs. In fact, Crimson’s analysis indicates Oracle WebLogic Server becomes less expensive on a TCO basis within two years from acquisition – an advantage that continues to grow with every year of operation. Over a 3-to-5 year time horizon, the TCO of Red Hat JBoss becomes as much as 35 percent more than WebLogic Server, in spite of its lower acquisition cost.

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