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Lowercase Token Filter
editLowercase Token Filter
editA token filter of type lowercase that normalizes token text to lower
case.
Lowercase token filter supports Greek, Irish, and Turkish lowercase token
filters through the language parameter. Below is a usage example in a
custom analyzer
PUT /lowercase_example
{
"settings": {
"analysis": {
"analyzer": {
"standard_lowercase_example": {
"type": "custom",
"tokenizer": "standard",
"filter": ["lowercase"]
},
"greek_lowercase_example": {
"type": "custom",
"tokenizer": "standard",
"filter": ["greek_lowercase"]
}
},
"filter": {
"greek_lowercase": {
"type": "lowercase",
"language": "greek"
}
}
}
}
}