use hibernate gps device alias a id aid property aname reference ref-comp-alia=b or component ref-alias=b alias b root=true id bid property bname Suppose one "b" resource's bname="aa",when search alias a and term("bname","aa"), everything is ok but when change bname="bb", then search alias a and term("bname","bb"), nothing return, if search term("bname", "aa"), then get the result with bname "bb". so I thought, when update alias b, the reference with "ref-comp-alias=b" doesn't change at all. firstly post issue, try to explain clearly, if miss understanding, let me know soon