- Taschenbuch: 304 Seiten
- Verlag: Packt Publishing (1. April 2009)
- Sprache: Englisch
- ISBN-10: 1847196063
- ISBN-13: 978-1847196064
- Größe und/oder Gewicht: 19 x 1,8 x 23,5 cm
- Durchschnittliche Kundenbewertung: 1 Kundenrezension
- Amazon Bestseller-Rang: Nr. 559.864 in Fremdsprachige Bücher (Siehe Top 100 in Fremdsprachige Bücher)
JBoss Drools Business Rules (Englisch) Taschenbuch – 1. April 2009
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Über den Autor und weitere Mitwirkende
Paul Browne's first job was selling computers in France and things went steadily downhill from there. He spent millons on behalf of a UK telephone company's procurement department and implemented direct marketing for a well-known Texan computer maker before joining the IT department of a company that builds bright red tractors and other seriously cool machines. Paul then embraced his techie side (he was writing games in machine code from the age of 11) and started a consultancy that used IT to solve business problems for companies in the financial and public sectors in Ireland, UK , Belgium, and New Zealand. Eight years later, he now works with an Irish government agency that helps similar software companies to grow past their initial teething pains. More formally, Paul has a bachelor's degree in Business and French from the University of Ulster, a master's degree in Advanced Software from UCD Dublin, a post-grad qualification in Procurement from the Chartered Institute of Procurement and Supply (UK), and will someday complete his ACCA financial exams. Paul can be found on LinkedIn at http://www.linkedin.com/in/paulbrowne , and via the Red Piranha (Business knowledge) project at http://code.google.com/p/red-piranha/ .
In diesem Buch(Mehr dazu)
Zusammenfassung: Dieses Buch ist ungeignet für Entwickler, jedoch ein sehr schönes Nachschlagewerk für die Bedienung der Webapplikation "DRools Guvnor".
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It is light on the technical depth, but this is not a problem and all crucial parts of the system are covered. It appeals to both business types and technical types trying to get a grasp of the Drools project components.
The book begins with a good introduction to rules and business rules in an organization, provides help with setting up your Drools environment and provides a tour of the following components in your business rules infrastructure:
* Guvnor, the guided rule editor
* JBoss IDE, the developers rule editing environment
* Testing your rules
* Managing your rules from Excel
* Domain Specific Languages (DSL)
* RuleFlow, graphical rule design
Furthermore, the book takes you through deploying rules in a real life situation and details how the rule engine works all the way down to the RETE algorithm.
This book is a very good place to start your JBoss Business Rules experience, whether you have done rules development before or not. It will get you up to speed on rules, is easy to read, well structured and before you know it you will be designing your first rules package.
If you are instead looking for a discussion on requirements gathering, rule writing concepts, good practices and implementation aspects, other books would be more appropriate.
If you're going to be a serious Drools coder you'll likely pickup another book with more in-depth java. But even experienced developers may appreciate the walk-throughs of Drools lingo, concept and UI that are not obvious, or perhaps not what you'd expect.
The author does a very patient walk through of various procedures for those using Windows and who might not normally work from the command line.
A few warnings: (and not really blaming the author for these)
* You'll notice odd words like "noJPGy". I think this was caused by a global search and replace that somebody did to change graphic file extension names from *.tif to *.JPG, but didn't limit it to "whole words only". So the word "notify" is changed to "noJPGy"
* In the pom.xml files, if you get errors, change the version numbers where it says something like "[5.0...)" to just "5.5.0.Final"
* If you're on Unix / Mac and understand Maven, you might remove the local repository override, so that it defaults back to ~/.m2/ I think the override was done for Windows users.
* The Guvnor UI has changed since this book was written. For example, in the left nav bar, "Rules" is now called "Browse". In some cases where it says to click an icon, you'll need to instead mouse over text elements and notice that become underlined - indicating that you click the word instead of an icon.
* The Jar file names have changed.
* If you're using Java 7, you may get errors about the version of the compiler. Update your Drools runtime to 5.5 and you'll be OK. (this is a frequent problem with open source libraries for those going from Java 6 to Java 7) In Eclipse, one file that had this error was (oddly) the Excel .xls file.
So although the book could use an update, this author is very patient and this is probably the most gentle intro to Drools and Guvnor that you'll find.
I would have given this book a 1 star if it wasn't the fact it is only one of the very few books on Drools available.