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POSearch for parentheses via ElasticSearch
 

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  1. POSearch for parentheses via ElasticSearch
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    <p>I have a requirement where i need to index some text that is prefixed with (std) which i should then be able to search for again.</p> <p>Ie. a document (html) contains the following sentence </p> <blockquote> <p>(std)Almindelige betingelser for misligholdelseserstatning</p> </blockquote> <p>and i should be able to query for </p> <blockquote> <p>(std)Almindelige betingelser</p> </blockquote> <p>Now, i've read a whole lot in the documentations and have now a charfilter in place which replaces ( and ) with _, and i thought i would then be safe to just to a replace in the search-query as well, so it becomes </p> <blockquote> <p>_std_Almindelige betingelser</p> </blockquote> <p>but for some reason its simply not working AT ALL. No result at all is being returned when searching for <code>_std_Almindelige betingelser</code> even though i can see the term is there by browsing the document and return a list of facets.</p> <p>This is my index settings and type mapping</p> <pre><code>var settings = new IndexSettings(); settings.Analysis.CharFilters.Add("parenthesis", new MappingCharFilter { Mappings = new[] { "( =&gt; _", ") =&gt; _" } }); settings.Analysis.TokenFilters.Add("snowball", new SnowballTokenFilter { Language = "Danish" }); settings.Analysis.Analyzers.Add("content", new CustomAnalyzer { CharFilter = new List&lt;string&gt;() { "html_strip", "parenthesis" }, Tokenizer = "whitespace", Filter = new List&lt;string&gt;() { "lowercase", "snowball" } }); </code></pre> <p>And the mapping</p> <pre><code>{"searchservicepages":{ "_source":{ "excludes" : ["content"] }, "properties":{ "content":{ "type":"string", "index_analyzer"":"content" } } }} </code></pre>
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    1. USPauli Østerø
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    1. COI would suggest to have a look at the [analyze api](http://www.elasticsearch.org/guide/reference/api/admin-indices-analyze/) and play around with it a little to see how you are analysing your text and what tokens you are indexing. I'm sure you'll then understand a lot more about what is happening to your data and what is best to do.
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      1. POSearch for parentheses via ElasticSearch
      1. USjavanna
 

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