EMF Search Plugin For Eclipse

The EMF Search Plugin provides an Eclipse search page for searching EMF model instance data.

Download from SourceForge.

Unzip contents of the zip file to the Eclipse plugins directory and restart Eclipse.

Click on Search > Search... to get to the EMF Search page and enter your search query.

Things to keep in mind when writing XPath queries:

XPath queries are evaluated with each top-level object in turn as the the evaluation context node.
The child:: and descendant:: axes can only be used to navigate containments. The attribute:: axis can be used to navigate any structural feature (including containments).

Some sample XPath queries to try (against .ecore files):

Find all EClassifiers declaring at least two EOperations and whose name contains an a:
```
//eClassifiers[count(eOperations) > 1 and contains(@name, 'a')]
```
Note how the child:: axis is used to navigate the EClassifier's eOperations containment reference, but the attribute:: axis is used for the name EAttribute.
Find all operations owned by EDataTypes:
```
//*[emf:isA('EDataType')]/eOperations
```
Here we are using the special emf:isA(string) function to check if the object at hand is an instance of EDataType.
Find all EClassifiers which declare the second EClassifier in the package as one of its supertypes:
```
//eClassifiers[contains(@eSuperTypes, //eClassifiers[2])]
```

Inside a predicate a structural feature called name cannot be referenced using an attribute:: axis location step as the left hand side of an equality expression. In other words: [@name = 'Foo'] has to be rewritten as ['Foo' = @name].
Note that this is only a limitation on structural features called name.