hi all: our bussiness system generate some data,that information structrue like email message,one message have some attachments,so we can use email message to think of our data,I need index and search the message and its attachments,and when display hits,must display two kinds of links for every hit: one kind for message,and the other for attachments which match the query criteria,so the former kind there is only one link,but latter may be zero to n links. one design may be as:for every message design one Lucene Document,it has a field to record its id,let's name the field id,an other field to correspond all its attachments,let's name the field attachments,afert that we also design a Lucene Document to correspond every message's every attachment,this Document has a field record its message's id,let's name the field messageid, so when query,we can retrieval messages may be itself's cotent or its attachments content match the query criteria,for generating links for attachments which match the query criteria,we can requey again,this time we can query only the message's attachments by adding a query condition that messageid=father query's messge id.it's obviously,there are two disadvantages: 1,it indexes attachments twice,one in message,and the other in Lucene Document for attachment.2,user's one query becomes 1+n query,1 for query message and its all attachments,n for requery the message's every attachments.is there any better solution?
dazhi Thanks for any hints!!!
