.. _es-guide-reference-index-modules-analysis-snowball-tokenfilter:

====================
Snowball Tokenfilter
====================

A filter that stems words using a Snowball-generated stemmer. The **language** parameter controls the stemmer with the following available values: **Armenian**, **Basque**, **Catalan**, **Danish**, **Dutch**, **English**, **Finnish**, **French**, **German**, **German2**, **Hungarian**, **Italian**, **Kp**, **Lovins**, **Norwegian**, **Porter**, **Portuguese**, **Romanian**, **Russian**, **Spanish**, **Swedish**, **Turkish**.


For example:


.. code-block:: js

    {
        "index" : {
            "analysis" : {
                "analyzer" : {
                    "my_analyzer" : {
                        "tokenizer" : "standard",
                        "filter" : ["standard", "lowercase", "my_snow"]
                    }
                },
                "filter" : {
                    "my_snow" : {
                        "type" : "snowball",
                        "language" : "Lovins"
                    }
                }
            }
        }
    }