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POSolr search for hashtag or mentions
 

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  1. POSolr search for hashtag or mentions
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    <p>We are using solr version 3.5 to search though Tweets, I am using <code>WordDelimiterFactory</code> with the following setting, to be able to search for <code>@username</code> or <code>#hashtags</code>:</p> <pre><code>&lt;filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="1" catenateNumbers="1" catenateAll="0" splitOnCaseChange="0" splitOnNumerics="0" preserveOriginal="1" handleAsChar="@#"/&gt; </code></pre> <p>I saw the following patch but this doesn’t seem to be working as I expected, am I missing something? </p> <p><a href="https://issues.apache.org/jira/browse/SOLR-2059" rel="nofollow">https://issues.apache.org/jira/browse/SOLR-2059</a> </p> <p>But searching for <code>@username</code> is also returning results for just username or <code>#hashtag</code> is just returning result for hastag. How can I achieve this? </p> <p>Entire Field Type:</p> <pre class="lang-xml prettyprint-override"><code>&lt;fieldType name="textnostem" class="solr.TextField" positionIncrementGap="100" autoGeneratePhraseQueries="true"&gt; &lt;analyzer type="index"&gt; &lt;charFilter class="solr.HTMLStripCharFilterFactory"/&gt; &lt;tokenizer class="solr.WhitespaceTokenizerFactory"/&gt; &lt;filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" enablePositionIncrements="true" /&gt; &lt;filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="1" catenateNumbers="1" catenateAll="0" splitOnCaseChange="0" splitOnNumerics="0" preserveOriginal="1" /&gt; &lt;filter class="solr.LowerCaseFilterFactory"/&gt; &lt;/analyzer&gt; &lt;analyzer type="query"&gt; &lt;tokenizer class="solr.WhitespaceTokenizerFactory"/&gt; &lt;filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" enablePositionIncrements="true" /&gt; &lt;filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="1" catenateNumbers="1" catenateAll="0" splitOnCaseChange="0" splitOnNumerics="0" preserveOriginal="1"/&gt; &lt;filter class="solr.LowerCaseFilterFactory"/&gt; &lt;/analyzer&gt; &lt;fieldType name="textnostem" class="solr.TextField" positionIncrementGap="100" autoGeneratePhraseQueries="true"&gt; &lt;analyzer type="index"&gt; &lt;charFilter class="solr.HTMLStripCharFilterFactory"/&gt; &lt;tokenizer class="solr.WhitespaceTokenizerFactory"/&gt; &lt;filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" enablePositionIncrements="true" /&gt; &lt;filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="1" catenateNumbers="1" catenateAll="0" splitOnCaseChange="0" splitOnNumerics="0" preserveOriginal="1" /&gt; &lt;filter class="solr.LowerCaseFilterFactory"/&gt; &lt;/analyzer&gt; &lt;analyzer type="query"&gt; &lt;tokenizer class="solr.WhitespaceTokenizerFactory"/&gt; &lt;filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" enablePositionIncrements="true" /&gt; &lt;filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="1" catenateNumbers="1" catenateAll="0" splitOnCaseChange="0" splitOnNumerics="0" preserveOriginal="1"/&gt; &lt;filter class="solr.LowerCaseFilterFactory"/&gt; &lt;/analyzer&gt; &lt;/fieldType&gt; &lt;fieldType name="textnostem" class="solr.TextField" positionIncrementGap="100" autoGeneratePhraseQueries="true"&gt; &lt;analyzer type="index"&gt; &lt;charFilter class="solr.HTMLStripCharFilterFactory"/&gt; &lt;tokenizer class="solr.WhitespaceTokenizerFactory"/&gt; &lt;filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" enablePositionIncrements="true" /&gt; &lt;filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="1" catenateNumbers="1" catenateAll="0" splitOnCaseChange="0" splitOnNumerics="0" preserveOriginal="1" handleAsChar="@#" /&gt; &lt;filter class="solr.LowerCaseFilterFactory"/&gt; &lt;/analyzer&gt; &lt;analyzer type="query"&gt; &lt;tokenizer class="solr.WhitespaceTokenizerFactory"/&gt; &lt;filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" enablePositionIncrements="true" /&gt; &lt;filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="1" catenateNumbers="1" catenateAll="0" splitOnCaseChange="0" splitOnNumerics="0" preserveOriginal="1" handleAsChar="@#" /&gt; &lt;filter class="solr.LowerCaseFilterFactory"/&gt; &lt;/analyzer&gt; &lt;/fieldType&gt; </code></pre>
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    1. COCan you show the entire fieldType definition that you are using, so we can if other filters or tokenizers might be influencing you results?
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      1. USPaige Cook
    2. COPersonally, I'd just add two fields to your index, one for a list of mentions, one for tags. Parse these out of your tweets when you add them to the index. That way you're not relying on new functionality.
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      1. USFrank Farmer
 

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