规范化器
编辑规范化器
编辑规范化器类似于分析器，但它们只能发出单个词元。因此，它们没有分词器，并且只接受可用的字符过滤器和词元过滤器的一个子集。只允许使用基于字符工作的过滤器。例如，允许使用小写过滤器，但不允许使用词干提取过滤器，因为词干提取需要查看整个关键字。当前可以在规范化器定义中使用的过滤器列表是：arabic_normalization、asciifolding、bengali_normalization、cjk_width、decimal_digit、elision、german_normalization、hindi_normalization、indic_normalization、lowercase、pattern_replace、persian_normalization、scandinavian_folding、serbian_normalization、sorani_normalization、trim、uppercase。
Elasticsearch 附带一个内置的 lowercase 规范化器。对于其他形式的规范化，需要自定义配置。
自定义规范化器
编辑resp = client.indices.create(
index="index",
settings={
"analysis": {
"char_filter": {
"quote": {
"type": "mapping",
"mappings": [
"« => \"",
"» => \""
]
}
},
"normalizer": {
"my_normalizer": {
"type": "custom",
"char_filter": [
"quote"
],
"filter": [
"lowercase",
"asciifolding"
]
}
}
}
},
mappings={
"properties": {
"foo": {
"type": "keyword",
"normalizer": "my_normalizer"
}
}
},
)
print(resp)
response = client.indices.create(
index: 'index',
body: {
settings: {
analysis: {
char_filter: {
quote: {
type: 'mapping',
mappings: [
'« => "',
'» => "'
]
}
},
normalizer: {
my_normalizer: {
type: 'custom',
char_filter: [
'quote'
],
filter: [
'lowercase',
'asciifolding'
]
}
}
}
},
mappings: {
properties: {
foo: {
type: 'keyword',
normalizer: 'my_normalizer'
}
}
}
}
)
puts response
const response = await client.indices.create({
index: "index",
settings: {
analysis: {
char_filter: {
quote: {
type: "mapping",
mappings: ['« => "', '» => "'],
},
},
normalizer: {
my_normalizer: {
type: "custom",
char_filter: ["quote"],
filter: ["lowercase", "asciifolding"],
},
},
},
},
mappings: {
properties: {
foo: {
type: "keyword",
normalizer: "my_normalizer",
},
},
},
});
console.log(response);
PUT index
{
"settings": {
"analysis": {
"char_filter": {
"quote": {
"type": "mapping",
"mappings": [
"« => \"",
"» => \""
]
}
},
"normalizer": {
"my_normalizer": {
"type": "custom",
"char_filter": ["quote"],
"filter": ["lowercase", "asciifolding"]
}
}
}
},
"mappings": {
"properties": {
"foo": {
"type": "keyword",
"normalizer": "my_normalizer"
}
}
}
}