heroku PropertiesResourceProvider

Heroku provides DATABASE_URL environment variable but in a php style (postgres://user:pwd@host:port/db). It would be great to add a org.apache.openejb.api.resource.PropertiesResourceProvider to let a resource directly use it to define a datasource:

<Resource id="jdbc/herokudb" type="DataSource"
  properties-provider="org.apache.openejb.resource.heroku.HerokuDatabasePropertiesProvider" />

This provider will handle UserName/Password/JdbcUrl properties.