Building Portals with the Java Portlet API - Portlet Life Cycle

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  1. Building Portals with the Java Portlet API - Portlet Life Cycle (25 messages)

    • Posted by: Nate Borg
    • Posted on: August 06 2004 13:00 EDT
    TSS has excerpted a sample chapter from the 'Building Portals with the Java Portlet API' book, by Jeff Linwood and David Minter. The chapter discusses how a portlet interacts with a portal, from initialization to removal, provides examples that walk you through the stages of the portlet life cycle and illustrate the issues of multithreaded portlet applications.

    Read The Portlet LifeCycle
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    Threaded Messages (25)

  2. Building Portals with the Java Portlet API - Portlet Life Cycle[ Go to top ]

    I downloaded the zip file but it seems the PDF is corrupted.

    Is it ok for you?
    Reply to this Reply to original

  3. Corrupt PDF[ Go to top ]

    I had the same problem just viewing the PDF on-line.

    Kito D. Mann
    Author, JSF in Action
    http://www.JSFCentral.com - JSF FAQ, news, and info
    Reply to this Reply to original

  4. PDF Fixed[ Go to top ]

    Hey guys,

    Sorry about that. The PDF originally required Adobe 6 to open but it's been reformatted to open in Adobe 4 and up.

    Please let us know if you're still having problems opening it.

    Regards,
    Nitin
    Reply to this Reply to original

  5. PDF corrupted[ Go to top ]

    The downloaded zip file can be extracted, but the extracted PDF file is broken.
    Reply to this Reply to original

  6. re[ Go to top ]

    Hi, Why not try Advanced PDF Repair at http://www.datanumen.com/apdfr/ ? It recovers several important PDF files for me and is really helpful! Hope this will help. Alan
    Reply to this Reply to original

  7. Building Portals with the Java Portlet API - Portlet Life Cycle[ Go to top ]

    Hi All,

    Even i wasn't able to download the complete document. The pdf in the zip file contained only six chapters. If anyone of you were able to successfully download the entire document then please share it with me at vs_ashvin at yahoo dot com.

    Ashvin
    Reply to this Reply to original

  8. Building Portals with the Java Portlet API - Portlet Life Cycle[ Go to top ]

    The current Portlet API is a good start, but one of the problems of the current incarnation is actually the lack of lifecycle management for instances of portlets. The current lifecycle only manages the lifecycle of the portlet implementation, whereas I'd really like to see stuff like create/clone/remove added as well, in order to properly handle how physical instances of portlets are handled.

    Pretty much all of our portlets have references to persistent objects, and when a portlet instance is cloned it needs to know this in order to be able to clone the persistent objects and update the references to these objects. Currently that is impossible, but since we wrote the portlet container we added support for it ourselves.
    Reply to this Reply to original

  9. Document not found[ Go to top ]

    Still can't access the document.
    Reply to this Reply to original

  10. Found :)[ Go to top ]

    If you login first and then click on the document link it works.
    Reply to this Reply to original

  11. Why is TSS always having a problem serving chapters[ Go to top ]

    Everytime a sample chapter or a book is put online, people can get it. I wonder why? Is it the people? or is it the readers?

    Mohd Amin
    Reply to this Reply to original

  12. Why is TSS always having a problem serving chapters[ Go to top ]

    Well, that seems to be a bug in their software. When you click on the link and get redirected to the login and then get redirected to the chapter, something goes wrong.

    And the comment count is always one too high. A new article has "1 Comments". Who cares anyway...
    Reply to this Reply to original

  13. possbile bug[ Go to top ]

    Sorry to post ist here, but I did not find any place to comment the pdf. On page 89 you mention "The versioning information belongs in the WEB-INF\MANIFEST.MF file in the WAR archive." But I think it must be "... in the META-INF\..."

    I'm interested reading the rest of the book, but amazon tells me it's not published yet :-(

    Best regards,
    Joerg
    Reply to this Reply to original

  14. possbile bug[ Go to top ]

    Yes, that's a typo; we'll make sure that gets listed in the errata.

    I'm expecting to receive my first printed copy today (Jeff had his on Friday), and I believe the publication date is 23rd August, so you shouldn't have much of a wait if you were to order now.

    Alternatively, we've created a site to support the book at http://portalbook.com/ and we'll certainly post a notice there as soon as it's published. That site's a little sparse at the moment, but if you have any questions, wishlists, or other feedback, we'll be delighted to start expanding the content.
    Reply to this Reply to original

  15. possbile bug[ Go to top ]

    PHP site for promoting a Java portlet API book while many open source portals are available.... must be a joke !!!! :)
    Reply to this Reply to original

  16. possbile bug[ Go to top ]

    Why's that ?

    JSR168 is a new standard. Portlets are a fairly new technology. There are quite a few open source portals, but a smaller number that fully support JSR 168 right now. The only forum software that I know of which is available as a portlet is the one we create as an example in the book, and that's really not ready for primetime yet, although we're working on that.

    Whereas PostNuke is here right now, and provides the specific functions that we need to promote and support the book.

    Portlets are more versatile, and we obviously believe they have a future. But they are not yet the right software for us to build this site. I don't see any inconsistency here.
    Reply to this Reply to original

  17. possbile bug[ Go to top ]

    I disagree :)

    JSR 168 were released in november 2003 with first compliance announcement made by Sun and eXo platform in december 2003....8 months ago which is long period in our industry.

    The first portlet book was then released on february 2004 (6 months ago :) )and we know many projects using open source portals to build web sites exactly the way you use Postnuke.

    The number of certified Open Source portlets is big too with forum and wiki portlets bundled in each.

    Of course you can use the portal you want but better eat your own dog food!

    Benjamin
    Reply to this Reply to original

  18. possbile bug[ Go to top ]

    I think we documented someone else's dogfood ;-)

    Which fully featured JSR168 compliant forum portlet(s) would you recommend ? I've evidently missed a trick here - if you can suggest one or more to take for a test drive, I'll give them a whirl and a write up.

    Dave.
    Reply to this Reply to original

  19. PHP Portalbook.com[ Go to top ]

    Thanks for noticing :)

    We run PostNuke because we're using a basic PHP/MySQL web hosting package, and portalbook.com is lumped in with a few other domains (like my mozillatips.com).

    It would be nice to host portalbook.com on my own computer, but I like not having to worry about administration.
    Reply to this Reply to original

  20. PHP Portalbook.com[ Go to top ]

    Jeff,

    This one is a good explanation :)

    That's true that java hosting is not that simple and portal hosting will even be worse as each portlet is deployed as a single war.

    Hope hosting services will come with a solution soon, there is a real market.
    Reply to this Reply to original

  21. Portalbook.com gone?[ Go to top ]

    I've been unable to reach the site. Has it moved, or is it no longer available?
    Reply to this Reply to original

  22. Portalbook.com gone?[ Go to top ]

    I just got mz book, tried to access portalbook.com, but it's down, why?

    Anyway the reason for me to access portalbook.com is that I have problems with pluto rc1, and pluto rc2 and the examples from the book, not to mention that i have a proble with the example from chapter 2 FirstPortlet.

    Dave? Jeff?

    Where can I acces a forum to ask about these problems..
    Reply to this Reply to original

  23. Liferary Hosting and Message Boards[ Go to top ]

    Liferay, another J2ee open source portal that is JSR-168 compliant, offers built in message boards, email, calendar, wiki, and other group ware portlets.

    Liferay also provides a built in portal hosting solution that is available right now with over 60 portlets.

    You can demo it at http://demo.liferay.net

    and compare it to our other running instances, all sharing the same wars, and ejbs, at

    http://my.3sixteen.com (shopping site)
    http://www.gatewayfriends.org (chuch site)
    http://my.ccuc.net (another church site)

    An overview of the Liferay architecture is available at

    http://www.liferay.com/documentation/architecture_overview.jsp#vi

    We've also been hosting other portals for over 4 years now.
    Reply to this Reply to original

  24. XDoclet bug[ Go to top ]

    I was just now looking at this chapter and noticed the XDoclet bug mentioned. Good catch! (BTW, thanks for mentioning my name!).

    I've been somewhat busy for the last few months and just now noticed the issue in XDoclet's JIRA. I can't guarantee when an XDoclet release will include this, but I'll certainly fix it when I get home tonight.
    Reply to this Reply to original

  25. Re: XDoclet bug[ Go to top ]

    Excellent! We'll make a note that its fixed on our web site.

    And I promised I'd put your name in :)
    Reply to this Reply to original

  26. only six chapters are available so ....[ Go to top ]

    If anyone of you were able to successfully download the entire document then please share it with me at sajjadsy@rediffmail.com
    Reply to this Reply to original