Solr 部分 局部字段修改 更新 刪除

Solr支持簡單的原子更新(也被稱爲部分更新)單文件經過字段修飾符如ADD,Inc.樂觀併發控制是自動更新文件的一種方法。java

Solr支持整個doc 更新幾個字段,自動更新文檔中的值。express

set – set or replace a particular value, or remove the value if null is specified as the new valueadd – adds an additional value to a list併發

remove – removes a value (or a list of values) from a listcode

removeregex – removes from a list that match the given Java regular expressionserver

inc – increments a numeric value by a specific amount (use a negative value to decrement)ci

// create the SolrJ client
HttpSolrClient client = newHttpSolrClient("http://localhost:8983/solr");
 
// create the document
SolrInputDocument sdoc = newSolrInputDocument();
sdoc.addField("id","book1");
Map<String,Object> fieldModifier = newHashMap<>(1);
fieldModifier.put("add","Cyberpunk");
sdoc.addField("cat", fieldModifier);  // add the map as the field value
 
client.add( sdoc );  // send it to the solr server
 
client.close();  // shutdown client before we exit
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