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http://issues.apache.org/bugzilla/show_bug.cgi?id=30330 IndexReader.delete(term) does not delete last doc from TermDocs list Summary: IndexReader.delete(term) does not delete last doc from TermDocs list Product: Lucene Version: 1.4 Platform: Other OS/Version: Other Status: NEW Severity: Normal Priority: Other Component: Index AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] It appears that delete(term) fails to delete the last document containing term, which for a unique match means that you can't remove an individual document. Code attempting to remove document with specific 'path' (slightly modified version of demo code): Directory directory = FSDirectory.getDirectory("index", false); IndexReader reader = IndexReader.open(directory); Term term = new Term("path", args[0]); // path passed via command line arg int deleted = reader.delete(term); reader.close(); directory.close(); System.out.println("deleted " + deleted + " documents containing " + term); Executing this always returns "deleted 0 documents containing <path entered>" In IndexReader.java, delete() has: public final int delete(Term term) throws IOException { TermDocs docs = termDocs(term); if (docs == null) return 0; int n = 0; try { while (docs.next()) { delete(docs.doc()); n++; } } finally { docs.close(); } return n; } It appears that docs.next() always returns false when there is only one doc, hence delete() is never called and 0 is always returned. I assume that this also means that if there are multiple matches, the last doc will not be deleted either, but I have not tested that. I modified the code as follows: boolean more = true; try { docs.next(); while (more) { delete(docs.doc()); n++; more = docs.next(); } } finally { docs.close(); } and then it worked as expected (at least attempts to delete a single document from the index succeeded whereas previously they did not). --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
