[jira] [Updated] (LOG4NET-30) Add support for type aliases in config file

["Ralph Goers (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LOG4NET-30?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ralph Goers updated LOG4NET-30:
-------------------------------

LOG4NET is now dormant.  

> Add support for type aliases in config file
> -------------------------------------------
>
>                 Key: LOG4NET-30
>                 URL: https://issues.apache.org/jira/browse/LOG4NET-30
>             Project: Log4net
>          Issue Type: New Feature
>            Reporter: Ron Grabowski
>            Priority: Trivial
>             Fix For: 1.2/2.0 Maintenance Release
>
>
> IBatisNet uses "type" attributes in their xml config files:
>  type="Company.Project.Foo.Data.Entity.Product, Company.Project.Data"
>  type="Company.Project.Foo.Data.Entity.Category, Company.Project.Data"
>  type="Company.Project.Foo.Data.Entity.User, Company.Project.Data"
> to save the user from having to re-type long strings every time something references a Product, Category, etc. They define an <alias> node that contains <typeAlias> entries:
>  <alias>
>   <typeAlias alias="Product" type="Company.Project.Foo.Data.Entity.Product, Company.Project.Data" />
>   <typeAlias alias="Category" type="Company.Project.Foo.Data.Entity.Product, Company.Project.Data" />
>   <typeAlias alias="User" type="Company.Project.Foo.Data.Entity.Product, Company.Project.Data" />
>  </alias>
> Wherever I have to specify a type, I may use one of the aliases I defined at the top of the file.
> It would be nice if log4net supported a similiar concept. It would also be nice if log4net shipped with some default aliases. I think normal casing would be ok:
>  FileAppender -> log4net.Appender.FileAppender
> An example incorporating the above suggestions would be (this will probably wrap when it posts to the mailing list):
> <alias>
>  <typeAlias alias="SessionContextPatternConverter" type="log4netAspExtensions.SessionContextPatternConverter, log4netAspExtensions" />
>  <typeAlias alias="CacheContextPatternConverter" type="log4netAspExtensions.CacheContextPatternConverter, log4netAspExtensions" />
>  <typeAlias alias="RequestContextPatternConverter" type="log4netAspExtensions.RequestContextPatternConverter, log4netAspExtensions" />
>  <typeAlias alias="ApplicationContextPatternConverter" type="log4netAspExtensions.ApplicationContextPatternConverter, log4netAspExtensions" />
> </alias>
> <appender name="LoginFileAppender" type="FileAppender">
>  <file value="c:/inetpub/wwwroot/Logs/Logins.txt" />
>  <layout type="PatternLayout">
>   <converter>
>     <name value="asp-session" />
>     <type value="SessionContextPatternConverter" />
>   </converter>
>   <conversionPattern value="%5p %d (%c:%L) - [%asp-session{UserId}] %m%n" />
>  </layout>
> </appender>
> I haven't fully looked into the <convertor> node to see if it can support this style of attributes but an even shorted syntax might be:
> <appender name="LoginFileAppender" type="FileAppender">
>  <file value="c:/inetpub/wwwroot/Logs/Logins.txt" />
>  <layout type="PatternLayout">
>   <converter name="asp-session" type="SessionContextPatternConverter" />
>   <conversionPattern value="%5p %d (%c:%L) - [%asp-session{UserId}] %m%n" />
>  </layout>
> </appender>
> It should be possible to overwrite the builtin aliases. Had I overridden FileAppender:
>  <typeAlias alias="FileAppender" type="log4netAspExtensions.AspNetFileAppender, log4netAspExtensions" />
> I would be able to declare my appender with support for the ~ character:
> <appender name="LoginFileAppender" type="FileAppender">
>  <file value="~/Logs/Login.txt" />
>  <layout type="PatternLayout">
>   <converter name="asp-session" type="SessionContextPatternConverter" />
>   <conversionPattern value="%5p %d (%c:%L) - [%asp-session{UserId}] %m%n" />
>  </layout>
> </appender>
> I think that the above changes would descrease the size of the config file and increase the files readability.



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