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POSolr(Lucene) is indexing only the first document after adding a custom TokenFilter
 

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  1. POSolr(Lucene) is indexing only the first document after adding a custom TokenFilter
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    <p>I created a custom token filter which concatenates all the tokens in the stream. This is my <code>incrementToken()</code> function </p> <pre><code>public boolean incrementToken() throws IOException { if (finished) { logger.debug("Finished"); return false; } logger.debug("Starting"); StringBuilder buffer = new StringBuilder(); int length = 0; while (input.incrementToken()) { if (0 == length) { buffer.append(termAtt); length += termAtt.length(); } else { buffer.append(" ").append(termAtt); length += termAtt.length() + 1; } } termAtt.setEmpty().append(buffer); //offsetAtt.setOffset(0, length); finished = true; return true; } </code></pre> <p>I added the new Filter to the end of index and query analysis chain for a field and testing the filter from <a href="http://localhost:8983/solr/admin/analysis.jsp" rel="nofollow">http://localhost:8983/solr/admin/analysis.jsp</a> seems to be working. The filter is concatenating the tokens in the stream. But on re-indexing the documents only my first document is getting indexed.</p> <p>This is how my filter chain looks like.</p> <pre><code> &lt;analyzer type="index"&gt; &lt;charFilter class="solr.PatternReplaceCharFilterFactory" pattern="[-_]" replacement=" " /&gt; &lt;charFilter class="solr.PatternReplaceCharFilterFactory" pattern="[^\p{L}\p{Nd}\p{Mn}\p{Mc}\s+]" replacement="" /&gt; &lt;tokenizer class="solr.WhitespaceTokenizerFactory" /&gt; &lt;filter class="solr.LowerCaseFilterFactory" /&gt; &lt;filter class="solr.StopWordFilterFactory" ignoreCase="true" words="words.txt" /&gt; &lt;filter class="org.custom.solr.analysis.ConcatFilterFactory" /&gt; &lt;/analyzer&gt; &lt;analyzer type="query"&gt; &lt;charFilter class="solr.PatternReplaceCharFilterFactory" pattern="[-_]" replacement=" " /&gt; &lt;charFilter class="solr.PatternReplaceCharFilterFactory" pattern="[^\p{L}\p{Nd}\p{Mn}\p{Mc}\s+]" replacement="" /&gt; &lt;tokenizer class="solr.WhitespaceTokenizerFactory" /&gt; &lt;filter class="solr.LowerCaseFilterFactory" /&gt; &lt;filter class="solr.StopWordFilterFactory" ignoreCase="true" words="words.txt" /&gt; &lt;filter class="org.custom.solr.analysis.ConcatFilterFactory" /&gt; &lt;/analyzer&gt; </code></pre> <p>Without the <code>ConcatFilterFactory</code> all words are getting indexed properly but with <code>ConcatFilterFactory</code> only the first document is getting indexed. What am I doing wrong? Kindly help me in understanding the problem.</p> <p><strong>UPDATE :</strong></p> <p>Finally figured out the issue.</p> <pre><code>if (finished) { logger.debug("Finished"); finished = false; return false; } </code></pre> <p>Looks like the same class is being reused. Makes sense.</p>
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    1. USJithin
    1. USJithin
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    1. COYou should post your own answer and mark it as accepted. This question still shows up as one of the top unanswered questions for Lucene.
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      1. USMartin Blech
    2. COI worked on this years back and now I can't remember what exactly I did for the fix. :(
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