Allow user to pass in additional parameters to <converter> node via some kind
of <property> tag
-----------------------------------------------------------------------------------------------
Key: LOG4NET-31
URL: http://issues.apache.org/jira/browse/LOG4NET-31
Project: Log4net
Type: Improvement
Reporter: Ron Grabowski
Priority: Minor
It would be useful if the user was able to supply additional properties to the
<convert> tag in the form of:
<property name="foo" value="bar" />
<property name="Hello" value="World" />
The code below uses a <property> node to determine if the HomeAddress or the
WorkAddress will appear in the log message. If the parameter is not present,
the converter prints a default value.
<converter>
<name value="user-converter" />
<type value="Company.Project.Logging.UserConverter, Company.Project" />
<property name="Address" value="HomeAddress" />
</converter>
<conversionPattern value="%p %d %user-converter{Nicko} - %m%n" />
The <property> tags would be accessible via a Properties IDictionary. It would
allow the converter to perform additional logic on the base.Option that was
passed in:
public class MyConverter : PatternConverter
{
override protected void Convert(TextWriter writer, object state)
{
User user = GetUserByUserName(base.Option);
string address = base.Properties["Address"] as string;
if (address != null && address.Length > 0)
{
if (user != null)
{
switch (address)
{
case "HomeAddress": writer.Write(user.HomeAddress); break;
case "WorkAddress": writer.Write(user.WorkdAddress); break;
}
}
else
{
// ???
}
}
else
{
// default display
writer.Write(user.HomeAddress); break;
}
}
}
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