原文地址: https://www.elastic.co/guide/en/elasticsearch/reference/7.7/analysis-decimal-digit-tokenfilter.html, 原文档版权归 www.elastic.co 所有
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 filteredit
Converts 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.
Exampleedit
The 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 analyzeredit
The 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"]
}
}
}
}
}