Solr atomic update JSON方式

weixin_30399055

于 2016-11-17 20:49:00 发布

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文章标签： json

原文链接：http://www.cnblogs.com/mysic/p/6075444.html

本文介绍了Solr的原子更新特性，包括set、add、remove、removeregex及inc等操作符，这些操作可以有效地更新文档字段而无需重新索引。文章还提供了一个示例，展示了如何使用这些操作来修改文档。

http://yonik.com/solr/atomic-updates/

Solr supports several modifiers that atomically update values of a document.

set – set or replace a particular value, or remove the value if null is specified as the new value
add – adds an additional value to a list
remove – removes a value (or a list of values) from a list
removeregex – removes from a list that match the given Java regular expression
inc – increments a numeric value by a specific amount (use a negative value to decrement)

Note: All original source fields must be stored for field modifiers to work correctly. This is the default in Solr.

[
 {"id"         : "book1",
  "author_s"   : {"set":"Neal Stephenson"},
  "copies_i"   : {"inc":3},
  "cat_ss"     : {"add":"Cyberpunk"}
 }
]

转载于:https://www.cnblogs.com/mysic/p/6075444.html