[Digester] Problems

[kax]

Hello,

The problem I have is not really with Digester, the problem is with the xml I 
have to parse. I thought using Digester was a good approach and I still think 
it is but I need some help to solve a problem I have.

I receive xml which looks like this:

<a:response>
        
<a:href>https://webmail.myorg.org/exchange/my.name/calendar/mymeeting.EML</a:href>
        <a:propstat>
                <a:status>HTTP/1.1 200 OK</a:status>
                <a:prop>
                        <d:to>"Some Name" &lt;[EMAIL PROTECTED]&gt;, 
=?iso-8859-1</d:to>
                        <e:subject>Meeting</e:subject>
                        <f:dtstart 
b:dt="dateTime.tz">2004-12-13T12:30:00.000Z</f:dtstart>
                        <f:dtend 
b:dt="dateTime.tz">2004-12-13T14:00:00.000Z</f:dtend>
                        <f:location>Meeting room 4</f:location>
                </a:prop>
        </a:propstat>
        <a:propstat>
                <a:status>HTTP/1.1 404 Resource Not Found</a:status>
                <a:prop><e:textdescription/></a:prop>
        </a:propstat>
</a:response>

This is a response to a propstat question via webdav to Microsoft Exchange. 
What I want to do is to create a new CalendarAppointment object everytime I run 
in to a <a:propstat> element. But the problem is that if a property of the 
appointment is empty, like the <e:textdescription/> above, a propstat element 
is included in the response and at this <a:propstat> element I don't want to 
create another CalendarAppointment object. And I don't want to try setting the 
properties of the element and I don't want to call the addAppointment method, 
see example xml rule file below:

<pattern value="*/a:prop">
<object-create-rule classname="myClass"/>
<call-method-rule pattern="e:subject" methodname="setSubject" paramcount="0"/>
                <call-method-rule pattern="e:textdescription" 
methodname="setText" paramcount="0"/>
                <call-method-rule pattern="f:location" methodname="setLocation" 
paramcount="0"/>
<set-next-rule methodname="addAppointment"/>
</pattern>

A way to solve this would be to check the content of the <a:status> element. If 
it contains 200 everything is ok and the object can be created, the properties 
can be set and the addAppoinntment method could be called, otherwise not. Can I 
acheive this behaviour with Digester?

Thanks in advance

/Kax


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