Some basic questions on XMLBeans ?

[Radhakrishnan J <ra...@tavant.com>]

Hi,

I'm very new to both XML and XMLBeans. I have gone through the documentation
shipped with release 1.0.2. I haven't gone through the mail archives.

I tried using the easypo example that ships with the release. And here is
how the first few lines of code look like -

  InputStream is = ...;
  XmlPurchaseOrderDocumentBean doc =
XmlPurchaseOrderDocumentBean.Factory.parse(is);
  XmlPurchaseOrderDocumentBean.PurchaseOrder po = doc.getPurchaseOrder();

I'm interested in knowing what happens *under the covers* here. The
documentation says that XML beans works with an in-memory copy of the XML
that obliviates the need for unmarshalling. I was just wondering if its just
a character array thats kept in-memory ?? Or is it a tree of XmlObject
instances for the entire document ( wouldn't this be similar to DOM parsing
) ? Is XMLBeans' parsing any different from DOM parsing ? Wouldn't it leave
a significant memory footprint for large XML documents ? 

I am hard pressed for time to read the code ( I'd eventually do that anyway
) or do any memory profiling, hence the post.

Thanks,
Radhakrishnan


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