[[analysis-keep-types-tokenfilter]]
=== Keep Types Token Filter

coming[1.4.0]

A token filter of type `keep_types` that only keeps tokens with a token type 
contained in a predefined set.


[float]
=== Options
[horizontal]
types:: a list of types to keep


[float]
=== Settings example

[source,js]
--------------------------------------------------
{
    "index" : {
        "analysis" : {
            "analyzer" : {
                "my_analyzer" : {
                    "tokenizer" : "standard",
                    "filter" : ["standard", "lowercase", "extract_numbers"]
                },
            },
            "filter" : {
                "extract_numbers" : {
                    "type" : "keep_types",
                    "types" : [ "<NUM>" ]
                },
            }
        }
    }
}
--------------------------------------------------
