我在绘图方面有些问题。我使用具有以下属性的jsonnetserializer而不是默认值:
var connectionSettings =
new ConnectionSettings(pool, sourceSerializer: (builtin, settings) => new JsonNetSerializer(
builtin, settings,
() => new JsonSerializerSettings { NullValueHandling = NullValueHandling.Ignore,
ReferenceLoopHandling = ReferenceLoopHandling.Ignore},
resolver => resolver.NamingStrategy = new CamelCaseNamingStrategy()
))
.BasicAuthentication(userName, password);
client = new ElasticClient(connectionSettings);
我喜欢这样:
private static CreateIndexDescriptor GetLecturerMap(string indexName)
{
CreateIndexDescriptor map = new CreateIndexDescriptor(indexName);
map.Mappings(M => M
.Map<Lecturer>(m => m
.Properties(prop => prop
.Text(s => s
.Name(n => n.FullName)
)
.Boolean(o => o
.Name(s => s.IsActive)
)
.Number(s => s
.Name(n => n.Id)
.Type(NumberType.Integer)
)
.Date(d => d
.Name(n => n.User.LastLogin)
)
.Object<User>(u=>u
.Name(n=>n.User)
.Properties(pr => pr
.Text(t=>t
.Name(n=>n.SkypeContact)
)
)
)
)
)
)
;
return map;
}
并这样称呼它:
public int InitializeLecturers()
{
string lecturersIndexName = LECUTRERS_INDEX_NAME;
client.Indices.Create(GetLecturerMap(lecturersIndexName));
List<Lecturer> lecturers = GetLecturers();
client.IndexMany(lecturers, lecturersIndexName);
return lecturers.Count;
}
当我使用以下方法从数据库中获取讲师时:
private List<Lecturer> GetLecturers() {
using (Context context = new Context(connectionString))
{
return context.Lecturers
.ToList<Lecturer>();
}
}
程序创建以下Map:
{
"lecturers" : {
"mappings" : {
"properties" : {
"firstName" : {
"type" : "text",
"fields" : {
"keyword" : {
"type" : "keyword",
"ignore_above" : 256
}
}
},
"fullName" : {
"type" : "text"
},
"id" : {
"type" : "integer"
},
"isActive" : {
"type" : "boolean"
},
"isLecturerHasGraduateStudents" : {
"type" : "boolean"
},
"isNew" : {
"type" : "boolean"
},
"isSecretary" : {
"type" : "boolean"
},
"lastLogin" : {
"type" : "date"
},
"lastName" : {
"type" : "text",
"fields" : {
"keyword" : {
"type" : "keyword",
"ignore_above" : 256
}
}
},
"middleName" : {
"type" : "text",
"fields" : {
"keyword" : {
"type" : "keyword",
"ignore_above" : 256
}
}
},
"skill" : {
"type" : "text",
"fields" : {
"keyword" : {
"type" : "keyword",
"ignore_above" : 256
}
}
},
"user" : {
"properties" : {
"skypeContact" : {
"type" : "text"
}
}
}
}
}
}
}
所以我不明白,为什么它会忽略我的Map并添加所有字段而不是我选择的字段?请告诉我怎么修。可能我必须用另一种方式创建Map?
1条答案
按热度按时间hrirmatl1#
可能发生的是
将应用在创建索引时定义的显式Map
elasticsearch为它在json文档中看到的没有Map的属性添加新的字段Map,并推断它们的字段Map类型。
第2点是elasticsearch的默认行为,但是可以通过更改
dynamic
属性创建索引和Map时。根据问题的内容,看起来您正在使用elasticsearch 6.x,这将是
根据文档链接,
dynamic
的价值false
将忽略新字段,不创建新字段Map或索引字段,但字段仍将位于_source
文件。您可能还需要设置[JsonIgnore]
属性的属性Lecturer
这应该被忽略,这样它们就不会被序列化并发送到elasticsearch。