While trying to integrate OData4J project with Resteasy I found couple issues with @Path handling

The following patterns are not supported,

1) @Path("{count: [$]count}")    = {uri}/$count
2) @Path("{first: \\$}value")    = {uri}/$value

because '$' is not properly being escaped currently

3) @Path("{entitySetName: [^/()]+?}{ignore: (?:\\(\\))?}")

in the above pattern the grouping characters inside '[...]' are counted towards the overall group count, where only grouping characters outside [...] block in regex should be counted.

These changed are required for Teiid project to support "odata" protocol. I will be submitting a pull request shortly.