hi Kevin
Pending the release of the Java XML Binding
implementation you could use DXML from ObjectSpace
http://www.objectspace.com/downloads/
regards
Jim Nicolson
-----Original Message-----
From: A mailing list about Java Server Pages specification and reference
[mailto:[EMAIL PROTECTED]]On Behalf Of Kevin Duffey
Sent: Tuesday, 23 May 2000 05:48
To: [EMAIL PROTECTED]
Subject: XML mapping to objects - Model 2 architecture for config file.
This may be a bit inappropriate for this group, but it follows on the heels
of me implementing the Model 2 architecture we all have been discussing so
much. I have a working Model 2, but, I want to read in my xml config file. I
am using the sun/xml parser because we use it in a couple of places on our
site. However, my first stab at reading in the XML into a DOM object, while
its being read in, trying to get each element and its value (not attribute)
has proven to be a pain in the butt.
So, my question is, is there any way I can just create a class and have the
XML parser map the right elements (by name) and place the values after those
tags directly into an instance of an object? It would also need to be able
to add items to a vector, or table of some sort. For example, my config file
looks like so:
<config>
<action>
<name>Login</name>
<class>com.bm.ui.actions.Login</class>
<result name="Successful" page="/inside/home.jsp" />
<result name="Error" page="/outside/login_error.jsp" />
</action>
<action>
<name>Enroll</name>
<class>com.bm.ui.actions.Enroll</class>
<result name="Successful" page="/common/login_ok.jsp" />
<result name="BadLogin" page="/common/enroll.jsp" />
<result name="Error" page="/outside/enroll_error.jsp" />
</action>
</config>
So, if I have class like:
public class ActionObject
{
private String actionName = "";
private String actionClass = "";
private Hashmap results = new Hashmap();
public ActionObject()
{
}
... and so on ...
}
Is there a way to automatically get the XML document to map the <name>,
<class> and <result name/page> tags and attributes and their values directly
to an instance of the object..so that I can do something like:
... read XML document in...
ActionObject ao = new ActionObject(XmlDoc);
while( ao.hasMoreActions() )
{
Object o = ao.nextAction();
mytable.add( o );
}
In sum, the few lines above would simply use my ContollerServlet
(ServletContext) hashtable object that stores each action, to cycle through
my own class (ActionObject) which when created was populated automatically
(perhaps through reflection of xml to the object) with the xml config data,
and now I am just looping through and adding it to the hash table.
OFcourse..if ao contains the entire config tree..there is no need to do
another table..this is all hypothetical..for the use to hopefully explain
what I am trying to do.
Thanks for anyone that can help.
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