FieldCache

[Peyman Faratin]

Hi

I have a field that is indexed as follows

for(String c: article.getCategories()){
        doc.add(new Field("categories", c.toLowerCase(),
        Field.Store.YES, Field.Index.ANALYZED));
}

I have a search space of 2 million docs and I need to access the category field 
of each hitdoc. I would like to use FieldCache but since I am indexing the 
field as mutlifield this is a problem. 

Is there a recommend solution to this problem?

thank you

Peyman