Hi Mr Wolf What is this // remove the document from index int docID = hits.id(0);
and can I increment the "0" factor in the bracket ...for deletion Thx in advance Karthik -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Wednesday, June 23, 2004 5:33 PM To: [EMAIL PROTECTED] Subject: AW: Delete Indexed from Merged Document Hello, > Karthik N S [mailto:[EMAIL PROTECTED] > > Has Somebody out there tried DELETING/UPDATION of > INDEXED Files from a > MERGED Index Format, > If HowTo do this Please Explain.... Of course you can delete or update a document from a merged index. It works in the same way as for all other indexes. You need an unique key (e.g. the file name or uri), which is indexed for searching, to find the right document, because the internal document numbers are changed after merging indexes or deleting documents and optimizing an index. Using this key you can search for the document and remove it. It doesn't matter if your index was created by merging serveral indexes or not. Example: /* Create index: */ Document document = new Document(); document.add(Field.Keyword("filename", file_name)); // this must be unique for each document! document.add(Field.Text("content", file_content)); writer.addDocument(document); /* ... */ writer.close(); /* Update or remove document: Use the file name to find the original document and remove it from index */ FSDirectory indexDirectory = FSDirectory.getDirectory("indexPath", false); IndexReader indexReader = IndexReader.open(indexDirectory); IndexSearcher indexSearcher = new IndexSearcher(indexReader); // create query and search for document using its filename TermQuery query = new TermQuery(new Term("filename", file_name)); Hits hits = indexSearcher.search(query); if ( hits.length() > 0 ) { // remove the document from index int docID = hits.id(0); indexReader.delete( docID ); } // else: this is a new file or already removed, so we can simply add it. indexSearcher.close(); indexReader.close(); indexDirectory.close(); // now open an IndexWriter for the same index and add the updated file // as new document.... /* done */ Hope it helps. Regards, Wolf-Dietrich Materna --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]