[xtext-dev] Changes in EMF Index

[Jan Köhnlein <jan.koehnlein@xxxxxxxxx>]

Hi,

the EMF index has changed drastically. Main issues

1) Iteration of resource contents is no longer done by a static  
component (the IndexFeeder) but pluggable. That way, users can decide  
how deep the index should descent into their models.
2) I've introduced a generic way of listening to model resource  
changes on file level. See EmfResourceChangeListener.
3) The class IndexBuilderImpl notifies all registered resource change  
listeners of changes. This class is not depending on the UI, but used  
by the project builder. It allows similar behavior outside of eclipse.
4) I've implemented a first shot at index event handling. Clients can  
now register to IndexChangeEvents on the index store.
5) Results retruned from a query are now Iterable<DescType> rather  
than collections. This will allow easier adaption to a JDBC backend,  
as well as scalable handling of results. To see how this can be  
incorporated into the you, have a look at the FIndEClassByType dialog.

I hope not to cause too much confusion. I will face the open bugs,  
e.g. concurrency problems, on Friday.

Regards
Jan

--
Dr. Jan Köhnlein
Senior Software Architekt

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