Hi, The current usage of BitSets in filters in Lucene is limited to applying only on docIDs i.e. I can only construct a filter out of a BitSet if I have the DocumentIDs handy.
However, with every update/delete i.e. CRUD modification, these will change, and I have to again redo the whole process to fetch the latest docIDs. Assume a scenario where I need to tag millions of documents with a tag like "Finance", "IT", "Legal", etc. Unless, I can cache these filters in memory, the cost of constructing this filter at run time per query is not practical. If I could map the documents to a numeric long identifier and put them in a BitMap, I could then cache them because the size reduces drastically. However, I cannot use this numeric long identifier in Lucene filters because it is not a docID but another regular field. Please help with this scenario. Thanks, ----------------------- Thanks n Regards, Sandeep Ramesh Khanzode
