在Elasticsearch 5.6.3中，我安装了摄取附件插件。我正在尝试将附件内容中的术语 vector 属性设置为 WithPositionOffsets 。 我应该在哪里设置此属性以在搜索中查看高限制的结果？
文件POCO如下:
public class Document
{
public int Id { get; set; }
public string Path { get; set; }
public string Content { get; set; }
public Attachment Attachment { get; set; }
}
这是带有映射的CreateIndex函数。
var indexResponse = client.CreateIndex(documentsIndex, c => c
.Settings(s => s
.Analysis(a => a
.Analyzers(ad => ad
.Custom("windows_path_hierarchy_analyzer", ca => ca
.Tokenizer("windows_path_hierarchy_tokenizer")
)
)
.Tokenizers(t => t
.PathHierarchy("windows_path_hierarchy_tokenizer", ph => ph
.Delimiter('\\')
)
)
)
)
.Mappings(m => m
.Map<Document>(mp => mp
.AutoMap()
.AllField(all => all
.Enabled(false)
)
.Properties(ps => ps
.Text(s => s
.Name(n => n.Path)
.Analyzer("windows_path_hierarchy_analyzer")
)
.Attachment(at => at.
Name(n => n.Attachment.Content)
.FileField(ff => ff
.Name("Content")
.TermVector(TermVectorOption.WithPositionsOffsets)
.Store()))
//.Text(s => s
// .Name(n => n.Attachment.Content)
// .TermVector(TermVectorOption.WithPositionsOffsets)
// .Store(true)
//)
.Object<Attachment>(a => a
.Name(n => n.Attachment)
.AutoMap()
)
)
)
)
);
进入.Mappings部分，我使用FileField设置termvector和store属性。但是结果如下:
{
"documents": {
"mappings": {
"document": {
"_all": {
"enabled": false
},
"properties": {
"attachment": {
"properties": {
"author": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"content": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"content_length": {
"type": "long"
},
"content_type": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"date": {
"type": "date"
},
"detect_language": {
"type": "boolean"
},
"indexed_chars": {
"type": "long"
},
"keywords": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"language": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"name": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
},
"title": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
}
}
},
"content": {
"type": "attachment",
"fields": {
"content": {
"type": "text",
"store": true,
"term_vector": "with_positions_offsets"
},
"author": {
"type": "text"
},
"title": {
"type": "text"
},
"name": {
"type": "text"
},
"date": {
"type": "date"
},
"keywords": {
"type": "text"
},
"content_type": {
"type": "text"
},
"content_length": {
"type": "integer"
},
"language": {
"type": "text"
}
}
},
"id": {
"type": "integer"
},
"path": {
"type": "text",
"analyzer": "windows_path_hierarchy_analyzer"
}
}
}
}
}
}
因此，我在查询结果中看不到Highlight属性。我应该怎么做？
最佳答案
要使用摄取附件插件，请勿将Attachment属性映射为attachment数据类型；此映射适用于在5.x中已弃用并在6.x中删除的mapper-attachment插件。
I wrote a blog post about using ingest-attachment with .NET，其中包括Attachment的示例映射；本质上，将其映射为object数据类型，并将其上的Content属性映射为应用了text的.TermVector(TermVectorOption.WithPositionsOffsets)数据类型。您需要先在索引中创建此映射，然后再将所有带有附件的文档编入索引。
关于elasticsearch - Elasticsearch NEST突出显示附件内容，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/47031334/