How to update multiple fields using java api elasticsearch script - elasticsearch

Question

I am trying to update multiple value in index using Java Api through Elastic Search Script. But not able to update fields.
Sample code :-
1:
UpdateResponse response = request.setScript("ctx._source").setScriptParams(scriptParams).execute().actionGet();
2:
UpdateResponse response = request.setScript("ctx._source.").setScriptParams(scriptParams).execute().actionGet();
if I mentioned .(dot) in ("ctx._source.") getting illegalArgument Exception and if i do not use dot, not getting any exception but values not getting updated in Index.
Can any one tell me the solutions to resolve this.

Answer 1

First of all, your script (ctx._source) doesn't do anything, as one of the commenters already pointed out. If you want to update, say, field "a", then you would need a script like:
ctx._source.a = "foobar"
This would assign the string "foobar" to field "a". You can do more than simple assignment, though. Check out the docs for more details and examples:
http://www.elasticsearch.org/guide/reference/api/update/
Updating multiple fields with one script is also possible. You can use semicolons to separate different MVEL instructions. E.g.:
ctx._source.a = "foo"; ctx._source.b = "bar"

Answer 2

In Elastic search have an Update Java API. Look at the following code
client.prepareUpdate("index","typw","1153")
.addScriptParam("assignee", assign)
.addScriptParam("newobject", responsearray)
.setScript("ctx._source.assignee=assignee;ctx._source.responsearray=newobject ").execute().actionGet();
Here, assign variable contains object value and response array variable contains list of data.

Answer 3

You can do the same using spring java client using the following code. I am also listing the dependencies used in the code.
import org.elasticsearch.action.update.UpdateRequest;
import org.elasticsearch.index.query.QueryBuilder;
import org.springframework.data.elasticsearch.core.query.UpdateQuery;
import org.springframework.data.elasticsearch.core.query.UpdateQueryBuilder;
private UpdateQuery updateExistingDocument(String Id) {
// Add updatedDateTime, CreatedDateTime, CreateBy, UpdatedBy field in existing documents in Elastic Search Engine
UpdateRequest updateRequest = new UpdateRequest().doc("UpdatedDateTime", new Date(), "CreatedDateTime", new Date(), "CreatedBy", "admin", "UpdatedBy", "admin");
// Create updateQuery
UpdateQuery updateQuery = new UpdateQueryBuilder().withId(Id).withClass(ElasticSearchDocument.class).build();
updateQuery.setUpdateRequest(updateRequest);
// Execute update
elasticsearchTemplate.update(updateQuery);
}

Answer 4

XContentType contentType =
org.elasticsearch.client.Requests.INDEX_CONTENT_TYPE;
public XContentBuilder getBuilder(User assign){
try {
XContentBuilder builder = XContentFactory.contentBuilder(contentType);
builder.startObject();
Map<String,?> assignMap=objectMap.convertValue(assign, Map.class);
builder.field("assignee",assignMap);
return builder;
} catch (IOException e) {
log.error("custom field index",e);
}
IndexRequest indexRequest = new IndexRequest();
indexRequest.source(getBuilder(assign));
UpdateQuery updateQuery = new UpdateQueryBuilder()
.withType(<IndexType>)
.withIndexName(<IndexName>)
.withId(String.valueOf(id))
.withClass(<IndexClass>)
.withIndexRequest(indexRequest)
.build();