Index Pattern changes

Hi All,

I plan to make some changes to Index Pattern that would allow to
specify path to an element/attribute. The path could be relative or
absolute. So, instead of pattern "elem@id" one could be using pattern
"/doc/node1/node2/elem@id". This would help to build indexes that only
include relevant information, reducing index size.

Also, it could be helpful in case when content of elem@id has
different type depending on its location in a document, for example,
some of them contain strings, while others contain integer. Right now
this situation is not handled so well, and may result in nodes of a
"wrong" type disappearing from result set.

Any thoughts?

Regards,
Natalia