Lowercase tokenizer

The lowercase tokenizer, like the letter tokenizer breaks text into terms whenever it encounters a character which is not a letter, but it also lowercases all terms. It is functionally equivalent to the letter tokenizer combined with the lowercase token filter, but is more efficient as it performs both steps in a single pass.

 POST _analyze { "tokenizer": "lowercase", "text": "The 2 QUICK Brown-Foxes jumped over the lazy dog's bone." } 

The above sentence would produce the following terms:

[ the, quick, brown, foxes, jumped, over, the, lazy, dog, s, bone ] 

The lowercase tokenizer is not configurable.