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Stemmer token filter

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Stemmer token filter

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A filter that provides access to (almost) all of the available stemming token filters through a single unified interface. For example:

PUT /my_index
{
    "settings": {
        "analysis" : {
            "analyzer" : {
                "my_analyzer" : {
                    "tokenizer" : "standard",
                    "filter" : ["lowercase", "my_stemmer"]
                }
            },
            "filter" : {
                "my_stemmer" : {
                    "type" : "stemmer",
                    "name" : "light_german"
                }
            }
        }
    }
}

The language/name parameter controls the stemmer with the following available values (the preferred filters are marked in bold):

Arabic	`arabic`
Armenian	`armenian`
Basque	`basque`
Bengali	`bengali` `light_bengali`
Brazilian Portuguese	`brazilian`
Bulgarian	`bulgarian`
Catalan	`catalan`
Czech	`czech`
Danish	`danish`
Dutch	`dutch`, `dutch_kp`
English	`english`, `light_english`, `minimal_english`, `possessive_english`, `porter2`, `lovins`
Finnish	`finnish`, `light_finnish`
French	`french`, `light_french`, `minimal_french`
Galician	`galician`, `minimal_galician` (Plural step only)
German	`german`, `german2`, `light_german`, `minimal_german`
Greek	`greek`
Hindi	`hindi`
Hungarian	`hungarian`, `light_hungarian`
Indonesian	`indonesian`
Irish	`irish`
Italian	`italian`, `light_italian`
Kurdish (Sorani)	`sorani`
Latvian	`latvian`
Lithuanian	`lithuanian`
Norwegian (Bokmål)	`norwegian`, `light_norwegian`, `minimal_norwegian`
Norwegian (Nynorsk)	`light_nynorsk`, `minimal_nynorsk`
Portuguese	`portuguese`, `light_portuguese`, `minimal_portuguese`, `portuguese_rslp`
Romanian	`romanian`
Russian	`russian`, `light_russian`
Spanish	`spanish`, `light_spanish`
Swedish	`swedish`, `light_swedish`
Turkish	`turkish`

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