identation

hi,
I use the xmldb.api. The xml data in the database is with identation.
I want to get a xquery result without identation. I did the following step:

XQueryService service = (XQueryService) col.getService( "XQueryService", "1.0" );
service.setProperty("indent","no");
ResourceSet rs=service.query(xquery);  

It does not work! The result is with identation!

Can u help me?

regards,

chacha