MemPostingFormat For all terms in index

[deepanshu gupta]

Hey,
Is there any way to use MemoryPosting Format for my whole index, I mean instead 
of specifying Codec attribute on per field basis can I specify something in my 
solrconfig.xml or schema.xml that will use Memory Posting Format for all 
indexed fields.If there is any way let me know. I know this will take lot of my 
memory but in my case memory issue is not there all i want is to return results 
as fast as possible.
Thanks.