elasticsearch - 如何使用常规脚本反转Elasticsearch文档中数组内的所有字符串？

Question

我有一个Elasticsearch文件
{ "_index": "testindex", "_type": "testtype", "_id": "doc1", "_version": 1, "found": true, "_source": { "array": [ "abc", "def", "ghi" ] } }
如何反转文档中数组内部的所有字符串？我尝试通过以下脚本使用更新API
temp = []; for(String item : ctx._source.array) temp << item.reverse(); ctx._source.array = temp;
更新Java中的api:

new org.elasticsearch.action.update.UpdateRequest(index, type, docId).script(script);

我在脚本中收到不允许进行方法调用之类的异常。

Bulk request failure, id: [doc4], message: ElasticsearchIllegalArgumentException[failed to execute script]; nested: GroovyScriptCompilationException[MultipleCompilationErrorsException[startup failed:
General error during canonicalization: Method calls not allowed on [java.lang.String]

Answer 1

试试这个

temp=[];

ctx._source.array.each{

    it -> temp.add(it.reverse())
}

ctx._source.array = temp