CODEWITHSUNDEEP
elasticsearch
Pauli Østerø
Pauli Østerø

Reputation: 6916

Search for parentheses via ElasticSearch

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.

Ie. a document (html) contains the following sentence

(std)Almindelige betingelser for misligholdelseserstatning

and i should be able to query for

(std)Almindelige betingelser

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

_std_Almindelige betingelser

but for some reason its simply not working AT ALL. No result at all is being returned when searching for _std_Almindelige betingelser even though i can see the term is there by browsing the document and return a list of facets.

This is my index settings and type mapping

var settings = new IndexSettings();

settings.Analysis.CharFilters.Add("parenthesis", new MappingCharFilter
{
    Mappings = new[] { "( => _", ") => _" }
});

settings.Analysis.TokenFilters.Add("snowball", new SnowballTokenFilter
{
    Language = "Danish"
});

settings.Analysis.Analyzers.Add("content", new CustomAnalyzer
{
    CharFilter = new List<string>() { "html_strip", "parenthesis" },
    Tokenizer = "whitespace",
    Filter = new List<string>() { "lowercase", "snowball" }
});

And the mapping

{"searchservicepages":{
    "_source":{
        "excludes" : ["content"]
    },
    "properties":{
        "content":{
            "type":"string",
            "index_analyzer"":"content"
        }
    }
}}

Upvotes: 0

Views: 1464

Answers (1)

shy
shy

Reputation: 1410

The problem is in the mapping. You should change "index_analyzer": "content" into "analyzer":"your_analyzer_name"

While your mapping is giving me trouble, with same index settings following mapping worked fine.

  "testindex": {
        "testdoc": {
          "_source": {
            "excludes": [
              "content"
            ]
          },
          "properties": {
            "content": {
              "type": "string",
              "analyzer": "myAnalyzer"
            }
          }
        }

Btw I'm using ES 0.90.2

Upvotes: 1

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