A list of all classes in the project's build path that match that pattern are presented in a list, from which you can select the class and package name you want to use.

While an index on a relational column contains all values from that column, an XML index contains only values of nodes that match both the XML pattern and the data type in the index definition.

In these cases, the first time you make a collection, you issue a query against the MBeanServerConnection and request a list of all the MBeans that match the supplied pattern.