IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Decimal digit token filter
editDecimal digit token filter
editConverts all digits in the Unicode Decimal_Number
General Category to 0-9
.
For example, the filter changes the Bengali numeral ৩
to 3
.
This filter uses Lucene’s DecimalDigitFilter.
Example
editThe following analyze API request uses the decimal_digit
filter to convert Devanagari numerals to 0-9
:
GET /_analyze { "tokenizer" : "whitespace", "filter" : ["decimal_digit"], "text" : "१-one two-२ ३" }
The filter produces the following tokens:
[ 1-one, two-2, 3]
Add to an analyzer
editThe following create index API request uses the
decimal_digit
filter to configure a new
custom analyzer.
PUT /decimal_digit_example { "settings": { "analysis": { "analyzer": { "whitespace_decimal_digit": { "tokenizer": "whitespace", "filter": [ "decimal_digit" ] } } } } }