如何在Nest for Elasticsearch中添加完整的词组标记器？ [英] how to add a full phrase tokenizer in Nest for Elasticsearch?

问题描述

当我使用小平面创建搜索时，我希望小平面结果在整个短语上，而不是单个单词。我希望它不要区分大小写，因为'not_analyzed'会做。

when i create a search using facets, i want the facet results to be on the whole phrase, not the individual word. and i want it NOT to be case sensitive - as 'not_analyzed' would do.

例如，如果我有一个音乐json对象，并希望组织基于面的结果在类型上，我想看到每个流派是整个流派术语（节奏和蓝调），而不是节奏和蓝调的一个方面，我想能够搜索节奏和蓝调，并且它匹配节奏和蓝调（通知情况）。

for example, if i have a music json object and want to organize the facet results based on genre, i want to see each genre as the whole genre term (rhythm and blues) and not one facet for 'rhythm' and one for 'blues', and i want to be able to search on 'rhythm and blues' and have it match 'Rhythm and Blues' (notice case).

似乎弹性搜索文档建议使用分类器和小写过滤器的自定义分析器。

it seems the elasticsearch documentation suggests using a custom analyzer of a tokenizer and lowercase filter.

这里是弹性搜索的建议我提到：（中页）
http://www.elasticsearch.org/blog/starts-with-phrase-matching/

here's the suggestion from elasticsearch i mentioned: (mid-page) http://www.elasticsearch.org/blog/starts-with-phrase-matching/

我想能够说（在伪代码中的POCO中）：

I want to be able to say something like (in my POCO in pseudo code):

[ElasticProperty(Analyzer = "tokenizer, lowercase"]
public string Genre {get;set;}

推荐答案

使用多字段键入您的映射，这样做将允许您以两种方式对类型字段进行索引（使用标准或小写分析器）进行搜索，而不是分析分析。

Use the multi field type in your mapping. Doing so will allow you to index the Genre field in two ways- analyzed (using the standard or lowercase analyzer) for conducting searches, and not_analyzed for faceting.

对于像这样的更高级的映射，NEST中基于属性的映射不会被剪切，你必须使用th流利的API，例如：

For more advanced mappings like this, the attribute based mapping in NEST won't cut it. You'll have to use the fluent API, for example:

client.CreatIndex("songs", c => c
.AddMapping<Song>(m => m
    .MapFromAttributes()
    .Properties(props => props
        .MultiField(mf => mf
            .Name(s => s.Genre)
            .Fields(f => f
                .String(s => s.Name(o => o.Genre).Analyzer("standard"))
                .String(s => s.Name(o => o.Genre.Suffix("raw")).Index(FieldIndexOption.not_analyzed)))))));

希望这有帮助！

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