[英]Create custom token filter with NEST
如何使用具有此類JSON的NEST配置索引:
"settings":{
"analysis":{
"filter":{
"name_ngrams":{
"side":"front",
"max_gram":50,
"min_gram":2,
"type":"edgeNGram"
}
},
"analyzer":{
"partial_name":{
"filter":[
"standard",
"lowercase",
"asciifolding",
"name_ngrams"
],
"type":"custom",
"tokenizer":"standard"
}
}
}
我可以使用CustomAnalyzer
類創建我的自定義分析器,但我無法找到如何創建自定義過濾器並在我的分析器中注冊它。
提前致謝!
經過一番搜索,我找到了一個解決方案:
var partialName = new CustomAnalyzer
{
Filter = new List<string> {"lowercase", "name_ngrams", "standard", "asciifolding"},
Tokenizer = "standard"
};
var fullName = new CustomAnalyzer
{
Filter = new List<string> {"standard", "lowercase", "asciifolding"},
Tokenizer = "standard"
};
client.CreateIndex("indexname", c => c
.Analysis(descriptor => descriptor
.TokenFilters(bases => bases.Add("name_ngrams", new EdgeNGramTokenFilter
{
MaxGram = 20,
MinGram = 2,
Side = "front"
}))
.Analyzers(bases => bases
.Add("partial_name", partialName)
.Add("full_name", fullName))
)
.AddMapping<Company>(m => m
.Properties(o => o
.String(i => i
.Name(x => x.Name)
.IndexAnalyzer("partial_name")
.SearchAnalyzer("full_name")
))));
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