Matt Munz wrote:
Actually, Jakarta JXPath can handle practically any java object graph (consisting of JavaBeans, Maps, etc. ) and traverse it via an XPATH query, so you don't have to tie yourselves to DOM objects.Bill,My thinking is that a "well-crafted object graph or relational db" needs to be crafted and the code maintained. Most components in JBoss are configuredWell, so do DTDs and XML schemas. It is an interesting argument that an XML Document object is a more flexible construct than a given arrangement of Data Objects (Hashtables, lists), and POJOs. I suppose the primary point is that an XPath query is more easily maintained than a given set of method calls. It certainly avoids the compiler, but so does the JMX bus, which does not use an XML document object as its metadata database...
check out
http://jakarta.apache.org/commons/jxpath/
So, actually, as long as your custom object graph is 'equivalent' to a DOM tree you can remove the DOM tree from the global configuration and replace it by your custom object graph. Don't know if it is useful to anybody, though.
via XML files. Why not store this XML in memory with Xerces? XML Objects provide us with a common, simple, easy way to store config data in memory and reference it(XPath).Sure. But don't the XML Objects eventually get converted into Objects? Why not keep those Objects in memory? For the objects that end up as MBeans, perhaps an enhanced search mechanism for the MBean Registry would be another way to address the problem? - Matt
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Anatoly Akkerman
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Courant Institute of Mathematical Sciences, NYU
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