我对可用的字段类型有些混淆。string
vsstrings
和int
vsints
等其他数据类型。
以下4个有什么区别?
<field name="string_multi" type="string" multiValued="true" indexed="true" stored="true"/>
<field name="string_single" type="string" indexed="true" stored="true"/>
<field name="strings_multi" type="strings" multiValued="true" indexed="true" stored="true"/>
<field name="strings_single" type="strings" indexed="true" stored="true"/>
鉴于我有文件,我应该为我的字段声明什么hashtags
?
String multivalued
或strings multivalue
或strings without multivalue
, ?
{
"polarity":0.0,
"text":"RT @socialistudents: Vlad - we go to NUS conference not just as individuals but as members of Socialist Students #SocStu17",
"created_at":"Sun Feb 12 19:28:34 +0000 2017",
"hashtags":[
"hashtag1",
"hashtag2"
],
"subjectivity":0.0,
"retweet_recount":4,
"id":830861171582439424,
"favorite_count":0
}