Re: Using constructors with arguments
|
View:
New views
2 Messages
—
Rating Filter:
Alert me
|
 |
Re: Using constructors with arguments
by Niall Gallagher-2
::
Rate this Message:
Hi, With release 2.1 constructor injection is now supported. Examples of constructor injection can be found in the test cases as well as the tutorial. http://simple.sourceforge.net/download/stream/doc/tutorial/tutorial.php#immutable Regards, Niall --- On Tue, 1/20/09, Kevin Day <kevin@...> wrote: > From: Kevin Day <kevin@...> > Subject: [Simple-support] Using constructors with arguments > To: "Simple" <simple-support@...> > Date: Tuesday, January 20, 2009, 4:28 PM > > > #yiv386076557 P, #yiv386076557 UL, > #yiv386076557 OL, #yiv386076557 DL, #yiv386076557 DIR, > #yiv386076557 MENU, #yiv386076557 PRE {margin:0 > auto;} > > > > For starters, I really like what I see in this > project (just started reviewing it this afternoon). > I'm hoping that I can get some pointers on a specific > use-case. > > > I would like to use Simple in conjunction with a > dependency injection system (probably Guice) and List > implementations from the GlazedLists project. > > We have to use a constructor on our list > implementations that contains arguments (some of the > arguments provided by Guice, some from element or attribute > data in the XML). > > What is the best way to approach this with > Simple? > > > It seems that some sort of Strategy mixed with a > custom Type is in order, but I'm not entirely clear on > the best approach. The architecture of the framework > looks powerful enough to do what we need, but > I can't see where to get started just yet. > > > To give a pseudo-code example of what we are trying to > do (in real life, we'll be injecting SomeInjectedObject > using Guice or a factory/service provider call): > > class SpecialList<E>{ > public SpecialList(SomeInjectedObject injected, > String valueFromAttribute, SomeObject > valueFromElement){ > ... > } > } > > > class MyObject{ > > @ElementList > SpecialList<ElementObject> list = new > SpecialList<ElementObject>(SomeInjectedObject.defaultInstance, > "test", new SomeObject()); > > } > > > When we serialize this with Simple, we'd like to > see something approximately like the following: > > <myObject > valueFromAttribute="test"> > > <someObject> ... > </someObject> <list> > <elementObject> ... whatever > goes into this ... </elementObject> > > <elementObject> ... whatever > goes into this ... </elementObject> > ... </list> > </myObject> > > > Note that: > > 1. The <list> element doesn't have a > class attribute > 2. When we construct the list during > deserialization, we need to be able to pull the > 'valueFromAttribute' and 'someObject' values > to use during construction of the SpecialList object > 3. The SpecialList object needs to have the 3 > argument constructor called (not a zero-arg > constructor). And it is not possible to call a zero > arg constructor, then modify the object afterwards to get > the same result. > > > Any pointers? I may be pushing the framework too > hard (some of the above requirements can be relaxed - if it > isn't possible to obtain valueFromAttribute or > someObject at construction time, we can find workarounds - > but we have to be able to create the SpecialList instance > using values from a factory/Guice/etc...). For what > it's worth, we have this type of behavior working in > Betwixt using custom BeanCreator implementations. > > Thanks much, > > - Kevin > > > -----Inline Attachment Follows----- > > ------------------------------------------------------------------------------ > This SF.net email is sponsored by: > SourcForge Community > SourceForge wants to tell your story. > http://p.sf.net/sfu/sf-spreadtheword > -----Inline Attachment Follows----- > > _______________________________________________ > Simple-support mailing list > Simple-support@... > https://lists.sourceforge.net/lists/listinfo/simple-support > ------------------------------------------------------------------------------ Enter the BlackBerry Developer Challenge This is your chance to win up to $100,000 in prizes! For a limited time, vendors submitting new applications to BlackBerry App World(TM) will have the opportunity to enter the BlackBerry Developer Challenge. See full prize details at: http://p.sf.net/sfu/Challenge _______________________________________________ Simple-support mailing list Simple-support@... https://lists.sourceforge.net/lists/listinfo/simple-support |
|
|
Re: Using constructors with arguments
by Quirino Zagarese-2
::
Rate this Message:
Hi Niall,
this is a great feature! Simple is used in my framework, you can see it at http://eu4ria.googlecode.com Anyway I have to use version 1.7.3 cause I'm still facing with the well known issue concerning J2EE classloading. Right now I'm studying Tomcat source-code to understand where are annotations processed. I'll keep you informed. Bests 2009/7/12 Niall Gallagher <gallagher_niall@...>
-- Quirino Zagarese Italian OpenLaszlo Community - www.laszloitalia.org ------------------------------------------------------------------------------ Enter the BlackBerry Developer Challenge This is your chance to win up to $100,000 in prizes! For a limited time, vendors submitting new applications to BlackBerry App World(TM) will have the opportunity to enter the BlackBerry Developer Challenge. See full prize details at: http://p.sf.net/sfu/Challenge _______________________________________________ Simple-support mailing list Simple-support@... https://lists.sourceforge.net/lists/listinfo/simple-support |
| Free embeddable forum powered by Nabble | Forum Help |
