SpanOrQuery skipTo() doesn't always move forwards -------------------------------------------------
Key: LUCENE-1583 URL: https://issues.apache.org/jira/browse/LUCENE-1583 Project: Lucene - Java Issue Type: Bug Components: Search Affects Versions: 2.4.1, 2.4, 2.3.2, 2.3.1, 2.3, 2.2, 2.1, 2.0.0, 1.9 Reporter: Moti Nisenson Priority: Minor In SpanOrQuery the skipTo() method is improperly implemented if the target doc is less than or equal to the current doc, since skipTo() may not be called for any of the clauses' spans: public boolean skipTo(int target) throws IOException { if (queue == null) { return initSpanQueue(target); } while (queue.size() != 0 && top().doc() < target) { if (top().skipTo(target)) { queue.adjustTop(); } else { queue.pop(); } } return queue.size() != 0; } This violates the correct behavior (as described in the Spans interface documentation), that skipTo() should always move forwards, in other words the correct implementation would be: public boolean skipTo(int target) throws IOException { if (queue == null) { return initSpanQueue(target); } boolean skipCalled = false; while (queue.size() != 0 && top().doc() < target) { if (top().skipTo(target)) { queue.adjustTop(); } else { queue.pop(); } skipCalled = true; } if (skipCalled) { return queue.size() != 0; } return next(); } -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. --------------------------------------------------------------------- To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org For additional commands, e-mail: java-dev-h...@lucene.apache.org