On Thursday 21 October 2004 05:36, Harvinder Singh wrote:
> Question : Does this mean then that "MyComponent" will get resolved only if
> it has the same class name as the xinfo file name.
> Infact I tried with a sample component having the classname different from
> the xinfo file name, and it did not get reolved and gave me an error. Issue
> here is what suppose if I want to use the same implementation for two
> different components.( my components have very similar functionality and
> thus I wud like to use the same implementation passing a flag each time
> which component to use.)
> I will define both the components in block.xml having the same class names
> and also an attribute 'type' which would suggest which one to use.
> But the way merlin is behaving, it will need 2 different classes and two
> different xinfos.
> Will something like this work in Merlin :
>
> MyComponent1.xinfo and MyComponent.class - resolves 1st component
> MyComponent2.xinfo and MyComponent.class - resolves 2nd component
The .xinfo file defines the Type of the component. It does not define/declare
an instance of the component.
> If not then please let me know how to achieve that?
MyComponent.class and MyComponent.xinfo belong together.
Unless MyComponent is from a 3rdParty source, I strongly urge you to let Magic
produce the .xinfo file automatically.
In your block, you declare the component's usage, and for singleton lifestyle
that directly translates to a component instance.
(Please note, that under the Avalon concepts, more than one singleton instance
of the same class can exist.)
<block name="MyBlock" >
<classloader>
:
</classloader>
<component name="somename" class="com.me.MyComponent" />
<component name="anothername" class="com.me.MyComponent" />
</block>
If you have other components that are depending on those and it is important
which instance (for instance different config) is used, you need manual
dependency resolution;
http://avalon.apache.org/central/about/tutorials/basic/dependencies/manual.html
(Also, I urge you to let Magic produce the block file, so that the classloader
is properly established.)
I hope this is enough for you to proceed.
Cheers
Niclas
--
+------//-------------------+
/ http://www.bali.ac /
/ http://niclas.hedhman.org /
+------//-------------------+
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
