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我们使用两种类型的弹性搜索(ES)文档:项目和插槽,其中项目是插槽文档的父项。 我们定义使用以下命令索引:查询elasitsearch父级子文档
curl -XPOST 'localhost:9200/items' -d @itemsdef.json
其中itemsdef.json
具有以下定义
{
"mappings" : {
"item" : {
"properties" : {
"id" : {"type" : "long" },
"name" : {
"type" : "string",
"_analyzer" : "textIndexAnalyzer"
},
"location" : {"type" : "geo_point" },
}
}
},
"settings" : {
"analysis" : {
"analyzer" : {
"activityIndexAnalyzer" : {
"alias" : ["activityQueryAnalyzer"],
"type" : "custom",
"tokenizer" : "whitespace",
"filter" : ["trim", "lowercase", "asciifolding", "spanish_stop", "spanish_synonym"]
},
"textIndexAnalyzer" : {
"type" : "custom",
"tokenizer" : "whitespace",
"filter" : ["word_delimiter_impl", "trim", "lowercase", "asciifolding", "spanish_stop", "spanish_synonym"]
},
"textQueryAnalyzer" : {
"type" : "custom",
"tokenizer" : "whitespace",
"filter" : ["trim", "lowercase", "asciifolding", "spanish_stop"]
}
},
"filter" : {
"spanish_stop" : {
"type" : "stop",
"ignore_case" : true,
"enable_position_increments" : true,
"stopwords_path" : "analysis/spanish-stopwords.txt"
},
"spanish_synonym" : {
"type" : "synonym",
"synonyms_path" : "analysis/spanish-synonyms.txt"
},
"word_delimiter_impl" : {
"type" : "word_delimiter",
"generate_word_parts" : true,
"generate_number_parts" : true,
"catenate_words" : true,
"catenate_numbers" : true,
"split_on_case_change" : false
}
}
}
}
}
然后我们使用以下命令添加子文档定义:
curl -XPOST 'localhost:9200/items/slot/_mapping' -d @slotsdef.json
在哪里slotsdef.json
定义如下:
{
"slot" : {
"_parent" : {"type" : "item"},
"_routing" : {
"required" : true,
"path" : "parent_id"
},
"properties": {
"id" : { "type" : "long" },
"parent_id" : { "type" : "long" },
"activity" : {
"type" : "string",
"_analyzer" : "activityIndexAnalyzer"
},
"day" : { "type" : "integer" },
"start" : { "type" : "integer" },
"end" : { "type" : "integer" }
}
}
}
最后,我们用下面的命令执行批量指数:
curl -XPOST 'localhost:9200/items/_bulk' --data-binary @testbulk.json
凡testbulk.json持有以下数据:
{"index":{"_type": "item", "_id":35}}
{"location":[40.4,-3.6],"id":35,"name":"A Name"}
{"index":{"_type":"slot","_id":126,"_parent":35}}
{"id":126,"start":1330,"day":1,"end":1730,"activity":"An Activity","parent_id":35}
我试图让下面的查询:搜索对于在特定日期以及某些开始和结束范围内具有子(位置)的位置的特定距离内的所有项目。
满足条件的更多插槽的项目应该得分更高。
我试着从现有的样本开始,但文档非常稀缺,很难前进。
线索?
如何应用某种程度的非规范化?可能会将所有可搜索的父属性移动到子项,并将父项作为结构来分组子项。嵌套文档会更好吗? –
是的,正如我在回答开始时提到的,将位置移动到插槽可能会有所帮助。我会建议做一些测试,看看你是否得到合理的性能,然后在非规范化后重复这些测试。 – imotov