[
https://issues.apache.org/jira/browse/SOLR-6468?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Elvis Rocha updated SOLR-6468:
------------------------------
Comment: was deleted
(was: I created a filter to remove gaps between tokens
{code:title=RemoveEmptyTokenFilterFactory.java|borderStyle=solid}
package filter;
import java.io.IOException;
import java.util.Map;
import org.apache.lucene.analysis.TokenFilter;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.tokenattributes.PositionIncrementAttribute;
import org.apache.lucene.analysis.util.TokenFilterFactory;
public class RemoveEmptyTokenFilterFactory extends TokenFilterFactory {
public RemoveEmptyTokenFilterFactory(Map<String, String> args) {
super(args);
}
@Override
public TokenStream create(TokenStream input) {
RemoveEmptyTokenFilter filter = new
RemoveEmptyTokenFilter(input);
return filter;
}
}
final class RemoveEmptyTokenFilter extends TokenFilter {
private final PositionIncrementAttribute posIncrAtt =
addAttribute(PositionIncrementAttribute.class);
public RemoveEmptyTokenFilter(TokenStream input) {
super(input);
}
@Override
public final boolean incrementToken() throws IOException {
while (input.incrementToken()) {
posIncrAtt.setPositionIncrement(1);
return true;
}
return false;
}
}
{code}
{code:title=schema.xml|borderStyle=solid}
<fieldType name="text_match" class="solr.TextField" positionIncrementGap="100">
<analyzer>
<charFilter class="solr.MappingCharFilterFactory"
mapping="mapping-ISOLatin1Accent.txt"/>
<tokenizer class="solr.WhitespaceTokenizerFactory"/>
<filter class="solr.LowerCaseFilterFactory"/>
<filter class="solr.StopFilterFactory" ignoreCase="true"
words="lang/stopwords_pt.txt" format="snowball"/>
<filter class="filter.RemoveEmptyTokenFilterFactory" />
</analyzer>
</fieldType>
{code})
> Regression: StopFilterFactory doesn't work properly without
> enablePositionIncrements="false"
> --------------------------------------------------------------------------------------------
>
> Key: SOLR-6468
> URL: https://issues.apache.org/jira/browse/SOLR-6468
> Project: Solr
> Issue Type: Bug
> Affects Versions: 4.8.1, 4.9
> Reporter: Alexander S.
>
> Setup:
> * Schema version is 1.5
> * Field config:
> {code}
> <fieldType name="words_ngram" class="solr.TextField" omitNorms="false"
> autoGeneratePhraseQueries="true">
> <analyzer>
> <tokenizer class="solr.PatternTokenizerFactory" pattern="[^\w]+" />
> <filter class="solr.StopFilterFactory" words="url_stopwords.txt"
> ignoreCase="true" />
> <filter class="solr.LowerCaseFilterFactory" />
> </analyzer>
> </fieldType>
> {code}
> * Stop words:
> {code}
> http
> https
> ftp
> www
> {code}
> So very simple. In the index I have:
> * twitter.com/testuser
> All these queries do match:
> * twitter.com/testuser
> * com/testuser
> * testuser
> But none of these does:
> * https://twitter.com/testuser
> * https://www.twitter.com/testuser
> * www.twitter.com/testuser
> Debug output shows:
> "parsedquery_toString": "+(url_words_ngram:\"? twitter com testuser\")"
> But we need:
> "parsedquery_toString": "+(url_words_ngram:\"twitter com testuser\")"
> Complete debug outputs:
> * a valid search:
> http://pastie.org/pastes/9500661/text?key=rgqj5ivlgsbk1jxsudx9za
> * an invalid search:
> http://pastie.org/pastes/9500662/text?key=b4zlh2oaxtikd8jvo5xaww
> The complete discussion and explanation of the problem is here:
> http://lucene.472066.n3.nabble.com/Help-with-StopFilterFactory-td4153839.html
> I didn't find a clear explanation how can we upgrade Solr, there's no any
> replacement or a workarround to this, so this is not just a major change but
> a major disrespect to all existing Solr users who are using this feature.
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