Demo for EMF EStore feature

This little demo shows how to implement EStore custom storage with EMF.

Storage is very simple it takes Eclipse Resources IFile and store each 500 objects into separate files. It uses LRUCache to implement model in memory caching.

1. Create new "New EStore Demo Model" via Eclipse new file wizard.
2. Check generate checkbox.
3. Wait for generation.
4. Open "EStore Demo" and select generated file in project explorer.
5. View and navigate for data.

1. com.xored.estore_demo.ModelEntry Persistence layer based on top of Persistence EMF Model class.
2. com.xored.estore_demo.ResourceBasedEStoreModel EStore interface implementation. Most of sugar are here.

Then we specify featureDelegation="Reflective" in our genmodel, EMF will delegate all operations to EStore class. EStore class itself contain set/get and so on methods with signature (InternalEObject, EStructuralFeature, Object..) so it is possible to set/get data from any source. In this example this is file based source. It could be DB and so on.

Because of this Objects itself are just a handles to real data. In sample I've used proxyURI of InternalEObject class to do a object identity.