elasticsearch - Elasticsearch脚本-多余的if语句

Question

我使用带有以下正文的update_by_query:

POST /documents/_update_by_query
 {
"script":{
  "source":"for(int i = 0;i < ctx._source.fields.size();i++){for (int j = 0; j < params.field_uid.size();j++){ if(params.field_uid[j].type == \"group\" ){ } else{ if(ctx._source.fields[i].uid == params.field_uid[j].uid){ ctx._source.fields.remove(i);} } }}",
  "params":{
   "field_uid":[{"uid":"number","type":"number"},{"uid":"test","type":"group"}]
   }
 },
 "query": { 
    "term": {
      "name": "test"
    }
  }
}

它给我像Extraneous if语句。这是我收到的错误消息:

{
    "error": {
        "root_cause": [
            {
                "type": "script_exception",
                "reason": "compile error",
                "script_stack": [
                    "... s.field_uid.size();j++){ if(params.field_uid[j].ty ...",
                    "                             ^---- HERE"
                ],
                "script": "for(int i = 0;i < ctx._source.fields.size();i++){for (int j = 0; j < params.field_uid.size();j++){ if(params.field_uid[j].type == 100 ){ } else{ if(ctx._source.fields[i].uid == params.field_uid[j].uid){ ctx._source.fields.remove(i);} } }}",
                "lang": "painless"
            }
        ],
        "type": "script_exception",
        "reason": "compile error",
        "script_stack": [
            "... s.field_uid.size();j++){ if(params.field_uid[j].ty ...",
            "                             ^---- HERE"
        ],
        "script": "for(int i = 0;i < ctx._source.fields.size();i++){for (int j = 0; j < params.field_uid.size();j++){ if(params.field_uid[j].type == 100 ){ } else{ if(ctx._source.fields[i].uid == params.field_uid[j].uid){ ctx._source.fields.remove(i);} } }}",
        "lang": "painless",
        "caused_by": {
            "type": "illegal_argument_exception",
            "reason": "Extraneous if statement."
        }
    },
    "status": 500
}

有人可以帮我吗？
怎么了

Answer 1

编写的if语句未执行任何操作，并且与ES引发extraneous if statement错误有关，因此无关紧要。

删除它并相应地更新条件，如下所示。

for(int i = 0;i < ctx._source.fields.size();i++){ for (int j = 0;j < 
params.field_uid.size();j++){ if(params.field_uid[j].type != \"group\"  
&& ctx._source.fields[i].uid == params.field_uid[j].uid){ 
ctx._source.fields.remove(i);}}}