Description Andreas Graf 2015-04-06 08:26:07 EDT

Sphinx makes heavy use of EcorePlatformUtil. In our scenarios, we see this as a performance impact. 

org.eclipse.sphinx.emf.resource.ContextAwareProxyURIHelper.augmentToContextAwareProxy(EObject, Resource)

seems to call EcorePlatformUtil.getFile(....) for all proxy.

In effect, that will invoke code like org.eclipse.core.internal.localstore.FileSystemResourceManager.resourceForLocation(IPath, boolean) FileSystemResourceManager.java 32276

for each proxy. However, this seems quite inefficient, since the file for a given Resource is unlikely to change. Would it be possible to cache this.
The problem are cases, where the file could actually be changed between to invocations:

* E.g. by resetting the URI (--> could be mitigated by actually caching resource & URI)

* the file is actually really gone (e.g. by manipulating projects / IResources between invocations directly) or filtered....