Why don't you share us the solutions? On Mon, Apr 27, 2009 at 4:50 PM, Andrew Hughes <[email protected]> wrote: > I think I have a solution for both based on JXPath. > > Cheers && a HUGE thank's to JXPath && Matt. > > > On Fri, Apr 24, 2009 at 12:09 PM, Andrew Hughes <[email protected]> wrote: > >> Hi All - probably just Matt tho :) >> I've had some great results with JXPath, and I am now getting down to the >> nitty/gritty of what I am trying to achieve. Which is quite complex and I've >> no doubt that more experienced people than me exist in this area! Help is >> once again greatly appreciated!!! >> >> Background: I am dealing with dynamic objects (Nodes). Node's >> appear/disappear at runtime and are encapsulated in a heirarchy of HashMap's >> for JXPath's context bean. This works fantastic, but I have two remaining >> mandatory requirements. >> >> Requirement 1: Listening >> As a new node appears, listeners defined as expressions would like to know >> about this. For example, someone would like to know if a Ferrari ever >> appears in the context bean: //c...@name="Ferrari"] >> or /Transport/Vehicle/c...@name="Ferrari"]. I believe that I should be >> testing is if the newly created/removed node/pointer is found in any of the >> supplied listening expressions? Ideally this can be done by traversing the >> minimal number of object's as possible - and could be too inefficient :'( >> for use. >> >> Requirement 2: Filtering. >> As a new node appear's I would like to know if I should include this node >> in the context bean hierarchy (i.e. addNewChild()) or ignore it. The >> criteria is if the new node is found using an expression (include or >> exclude). For example, if we don't deal with China then we might have an >> exclude expression /World/Asia/China or /World/Asia/*. Can I determine if >> the new node is within an includes/excludes expression without having to add >> the node to the context, then testing, then removing - becuase this has the >> potential to falsly invoke listeners in Requirement #1 >> >> I'd like to know if there is any helpful functionality within jxpath that I >> am unaware of. I suspect there is >> >> >> As usual... I'm incredibly thankful for any help I can get :) >> >> >
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