如何将MongoDB多值字段索引到Solr 5.3.0中

Question

I have mongodb documents like this,,

 { 
    "_id" : ObjectId("5993d55cebb06d20f08521ad"), 
    "LoginInfoId" : NumberInt(410), 
    "EstablishmentName" : "xyz", 
    "ShopCategory" : "Crockery", 
    "likes" : NumberInt(21), 
    "ShopCats" : [ 1,5,3 ]
    }

    { 
    "_id" : ObjectId("5993d55cebb06d20f088871ad"), 
    "LoginInfoId" : NumberInt(411), 
    "EstablishmentName" : "abc", 
    "ShopCategory" : "Crockery", 
    "likes" : NumberInt(51), 
    "ShopCats" : [ 1,8,9 ]
    }

I need to index the field ShopCats into a solr field as comma separated value like this,

"ShopCats" : [ 1,2,3 ]

I need to use these values to do filterquery in solr search

I have tried with some schema field definitions

<field name="ShopCats" type="commaDelimited" indexed="true" stored="true" multiValued="true" />



<fieldType name="commaDelimited" class="solr.TextField">
      <analyzer>
        <tokenizer class="solr.PatternTokenizerFactory" pattern=",\s*" />
      </analyzer>
     </fieldType>

Still the MongoDb document field ShopCats is not indexing into solr .

Answer 1

I assume that you use a Mongo connector, if yes then Mongo connectors unwinds Arrays so the below

 { 
"_id" : ObjectId("5993d55cebb06d20f08521ad"), 
"LoginInfoId" : NumberInt(410), 
"EstablishmentName" : "xyz", 
"ShopCategory" : "Crockery", 
"likes" : NumberInt(21), 
"ShopCats" : [ 1,5,3 ]
}

Will be changed to below before indexing

{ 
"_id" : ObjectId("5993d55cebb06d20f08521ad"), 
"LoginInfoId" : NumberInt(410), 
"EstablishmentName" : "xyz", 
"ShopCategory" : "Crockery", 
"likes" : NumberInt(21), 
"ShopCats.0" : 1,
"ShopCats.1" : 5,
"ShopCats.2" : 3
}

This will happen whenever there is a sub document, and Solr doesn't have he "sub-document" support/ You might be able to get around this with the copyField directive in your schema.xml.

I hope this helps.