Re: [WebMacro-user] Parsing Properties files

[Lars G. <la...@wo...>]

Hi Marc,

Yes, that is a quick solution. What I am concerned about though is 
performance and caching. If you would load the properties file on each 
request, that seems to be not very efficient. I understand that your 
example was just to illustrate the approach. What I would like to know 
is what is the most efficient way to reuse WM to cache these properties 
files? Should I simply use a broker and load the file using the getUrl() 
methods? What would be your first thought on this?

Thanks,
Lars

Marc Palmer wrote:
> Lars George wrote:
> 
>> Hi Keats,
>>
>>> I actually had a PropertyDirective years ago that did just what you 
>>> are saying, but I've lost track of the code.  (It never got committed 
>>> to the core because nobody expressed interest.)  There is some code 
>>> in the core that parses expressions from the webmacro.properties 
>>> file.  I can point you to that if it is helpful.
>>
>>
>>
>> Any pointer is helpful :)
> 
> 
> Personally, I would just write my own helper class:
> 
> public class MyPropertiesHelper
> {
>     private Properties props;
> 
>     public void load( Object filepath)
>     {
>         FileInputStream fis = ...;
>         props.clear();
>         props.load( fis);
>     }
> 
>     public Object get(Object key)
>     {
>         return props.getProperty(key.toString());
>     }
> 
>     public Object put(Object key, Object value)
>     {
>         return props.setProperty(key.toString(), value.toString());
>     }
> }
> 
> 
> An -new- instance of this can then be put into your context for every 
> request, or you can wrap it in a contexttoolloader/factory so that you 
> automatically get a new instance for every request.
> 
> ...or you add a simple factory that you put into the context instead:
> 
> public class MyPropertiesFactory
> {
>      public MyPropertiesHelper newInstance(Object filename)
>      {
>           MyPropertiesHelper h = new MyPropertiesHelper();
>           h.load(filename);
>           return h;
>      }
> }
> 
> Cheers
>