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https://issues.apache.org/jira/browse/LUCENE-1327?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Busch updated LUCENE-1327:
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Fix Version/s: (was: 2.3.1)
(was: 3.0)
(was: 2.9)
(was: 2.3)
(was: 2.2)
(was: 2.1)
(was: 2.0.0)
(was: 1.9)
> TermSpans skipTo() doesn't always move forwards
> -----------------------------------------------
>
> Key: LUCENE-1327
> URL: https://issues.apache.org/jira/browse/LUCENE-1327
> Project: Lucene - Java
> Issue Type: Bug
> Components: Query/Scoring, Search
> Affects Versions: 1.9, 2.0.0, 2.1, 2.2, 2.3, 2.3.1, 2.3.2, 2.4, 2.9, 3.0
> Reporter: Moti Nisenson
> Fix For: 2.3.2, 2.4
>
>
> In TermSpans (or the anonymous Spans class returned by SpansTermQuery,
> depending on the version), the skipTo() method is improperly implemented if
> the target doc is less than or equal to the current doc:
> public boolean skipTo(int target) throws IOException {
> // are we already at the correct position?
> if (doc >= target) {
> return true;
> }
> ...
> 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:
> if (doc >= target) {
> return next();
> }
> This bug causes particular problems if one wants to use the payloads feature
> - this is because if one loads a payload, then performs a skipTo() to the
> same document, then tries to load the "next" payload, the spans hasn't
> changed position and it attempts to load the same payload again (which is an
> error).
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