Classic token filteredit
Performs optional post-processing of terms generated by the
classic tokenizer.
This filter removes the english possessive ('s) from the end of words and
removes dots from acronyms. It uses Lucene’s
ClassicFilter.
Exampleedit
The following analyze API request demonstrates how the classic token filter works.
GET /_analyze
{
"tokenizer" : "classic",
"filter" : ["classic"],
"text" : "The 2 Q.U.I.C.K. Brown-Foxes jumped over the lazy dog's bone."
}
The filter produces the following tokens:
[ The, 2, QUICK, Brown, Foxes, jumped, over, the, lazy, dog, bone ]
Add to an analyzeredit
The following create index API request uses the classic token filter to configure a new custom analyzer.
PUT /classic_example
{
"settings": {
"analysis": {
"analyzer": {
"classic_analyzer": {
"tokenizer": "classic",
"filter": [ "classic" ]
}
}
}
}
}