Indexing all permutations of words from the input

[Martin Jansen]

Hey there,

I'm looking for an <analyzer> configuration for Solr 1.4 that
accomplishes the following:

Given the input "abc xyz foo" I would like to add at least the following
token combinations to the index:

        abc
        abc xyz
        abc xyz foo
        abc foo
        xyz
        xyz foo
        foo

A WhitespaceTokenizer combined with a ShingleFilter will take me there
to some extent, but won't e.g. add "abc foo" to the index.  Is there a
way to do this?

- Martin