How convert update_by_query with params as array to Java Rest client SDK

Elastic Stack Elasticsearch
1

Hi,
Working with version 7.15
Trying to do "update all by query " using script.
The main idea to iterate the params in array and update as in the query below to all matched documents.

The script:
POST : http://11.1.1.1:9200/index/_update_by_query?refresh&conflicts=proceed&max_docs=10

      "query": {
        "bool": {
          "must": {
            "bool": {
              "should": [
                {
                  "match": {
                    "_es_attributes": "classifier.old1"
                  }
                },
                {
                  "match": {
                    "_es_attributes": "classifier.old2"
                  }
                }
              ]
            }
          }
        }
      },
      "script": {
        "source": "for (int i=0 ; i < params.src.size() ; i++) { if (ctx._source._es_attributes.contains(params.src[i].oldtag)) { ctx._source._es_attributes[ctx._source._es_attributes.indexOf(params.src[i].oldtag)] = params.src[i].newtag;}}",
        "lang": "painless",
        "params": {
          "src": [
            {
              "oldtag": "classifier.Email.old1",
              "newtag": "classifier.Email.new1"
            },
    				 {
              "oldtag": "classifier.Email.old2",
              "newtag": "classifier.Email.new2"
            }
          ]
        }
      }
    }

What i've trying so far

public class Diff {
String key;
Object oldval;
Object newval;

	public Diff(String key, Object oldval, Object newval) {
		this.key = key;
		this.oldval = oldval;
		this.newval = newval;
	}
}


    String script = "for (int i=0 ; i < params.src.size() ; i++) { if (ctx._source._es_attributes.contains(params.src[i].oldval)) { ctx._source._es_attributes[ctx._source._es_attributes.indexOf(params.src[i].oldval)] = params.src[i].newval;}}";
    
    			BoolQueryBuilder queryBuilder = QueryBuilders.boolQuery();
    			diffList.forEach(a -> {
    				queryBuilder.should(QueryBuilders.matchQuery("_es_attributes", a.getOldval()));
    			});
    
    params = Collections.singletonMap("src", gson.toJsonTree(diffList).toString())
    
    
    UpdateByQueryRequest request =
    				new UpdateByQueryRequest(indexName);
    		request.setRefresh(true);
    		request.setConflicts("proceed");
    		request.setQuery(queryBuilder);
    		request.setScript(
    				new Script(
    						ScriptType.INLINE, "painless",
    						script,
    						params));
    		BulkByScrollResponse response = elasticsearchRestClient.updateByQuery(request,
    				getCustomTimeoutOptions(2 * indexBulkTimeout));

But I got from ES error:

ElasticsearchStatusException[Elasticsearch exception [type=script_exception, reason=runtime error]]; nested: ElasticsearchException[Elasticsearch exception [type=illegal_argument_exception, reason=dynamic method [java.lang.String, size/0] not found]

What i'm missing

2

I do not understand why your java objects in the src map are query builders? In the JSON you provide those are a list

"params": {
"src": [
{
"oldtag": "classifier.Email.old1",
"newtag": "classifier.Email.new1"
},
{
"oldtag": "classifier.Email.old2",
"newtag": "classifier.Email.new2"
}
]
}

How about (lazy newer java syntax)

src = List.of(
  Map.of("oldTag", "classifier.Email.old1", "newtag", "classifier.Email.new1"),
  Map.of("oldTag", "classifier.Email.old2", "newtag", "classifier.Email.new2")
);

and then use this?

3

Thanks for reply ,

BoolQueryBuilder queryBuilder = QueryBuilders.boolQuery();
    			diffList.forEach(a -> {
    				queryBuilder.should(QueryBuilders.matchQuery("_es_attributes", a.getOldval()));
    			}); 

diffList is just pojo list of diffs (old vs new...) im iterating over it to build the builder.
and pass to setQuery param

    request.setQuery(queryBuilder);


The optional Params that don't works are build with map as example

map("src", ... "<here i did array to json>") // it doesn't work in java .. why ? 

I need the "src" key  because the script starts with params.src.size() and it uses it ....