On Wed, 2006-06-14 at 10:36 +0200, Holger Haag wrote: > Hi, hi Holger
sorry for such a tardy reply (been very busy with ApacheCon EU stuff) > I am looking for a betwixt feature I call "summary" having found no better > term. > > Requirements are as follows: > > A air fare list is converted to the following XML: > > <fareList> > <fare> > <departure code="SXF"/> > <destination code="JFK"/> > <price amount="123.45" currency="EUR"/> > </fare> > <fare> > <departure code="SXF"/> > <destination code="JFK"/> > <price amount="200.45" currency="EUR"/> > </fare> > <fare> > <departure code="SXF"/> > <destination code="JFK"/> > <price amount="323.45" currency="EUR"/> > </fare> > </fareList > > Now it happens that codes like "JFK" (JFK stands for New York John F. Kennedy > aiport) are not necessarily self-describing, > and there is a lot of information related to an airport, e.g. name, city, > country, web site, weather conditions etc. > > This information should also be included in the XML document, but in a > separate section - to keep the XML document smaller. > > So the XML should really look like: > > > <fareList> > <fare> > <departure code="SXF"/> > <destination code="JFK"/> > <price amount="123.45" currency="EUR"/> > </fare> > <fare> > <departure code="SXF"/> > <destination code="JFK"/> > <price amount="200.45" currency="EUR"/> > </fare> > <fare> > <departure code="SXF"/> > <destination code="JFK"/> > <price amount="323.45" currency="EUR"/> > </fare> > <summary> > <airports> > <airport> > <code>JFK</code> > <name>John F. Kennedy International</name> > <city>New York</city> > <state>New York</state> > <country isoCode="US">United States of America</country> > </airport> > </airports> > </summary> > </fareList > > Such an XML structure can of course already be built via betwixt, but my > application has this kind of requirements > in a couple of XML documents and I don't want to browse the object tree for > each > and every bean to find out which airports are contained. > > In fact an elegant way would be to have > > (1) a bean collector which is called whenever a bean is converted to XML > > (2) a summary builder which uses the collected beans to build a summary > > is this (or something similar) already available in betwixt ? If not I'm > willing to put some work into and contribute the appropriate SVN patches. sounds good :-) similar problems have been solved by using ID-IDREF magic using a custom IdStoringStrategy. (sorry for not being to find very much time ATM) - robert
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