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Oliver Becker commented on LUCENE-6667: --------------------------------------- Ah, ok, now I understand. Yes, this happens for tokens that will be replaced by the synonym filter, i.e. for inserted tokens (and it is a single token replacement). But I see the problem. > Custom attributes get cleared by SynonymFilter > ---------------------------------------------- > > Key: LUCENE-6667 > URL: https://issues.apache.org/jira/browse/LUCENE-6667 > Project: Lucene - Core > Issue Type: Bug > Affects Versions: 4.10.4 > Reporter: Oliver Becker > > I believe the Lucene API enables users to define their custom attributes (by > extending {{AttributeImpl}}) which may be added by custom Tokenizers. > It seems, the {{clear}} and {{copyTo}} methods must be implemented to clear > and restore the state of this custom attribute. > However, some filters (in our case the SynonymFilter) simply call > {{AttributeSource.clearAttributes}} without invoking {{copyTo}}. Instead the > filter just resets some known attributes, simply ignoring all other custom > attributes. In the end our custom attribute value is lost. > Is this a bug in {{SynonymFilter}} (and others) or are we using the API in > the wrong way? > A solution might be of course to provide empty implementations of {{clear}} > and {{copyTo}}, but I'm not sure if this has other unwanted effects. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org