[hibernate-issues] [JIRA] (HSEARCH-3978) Exception when using elasticsearch and multiple analyzers for indexed field in projection query.

Rokko_11 NA ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *created* an issue Hibernate Search ( https://hibernate.atlassian.net/browse/HSEARCH?atlOrigin=eyJpIjoiODc5N2Fj... ) / Bug ( https://hibernate.atlassian.net/browse/HSEARCH-3978?atlOrigin=eyJpIjoiODc... ) HSEARCH-3978 ( https://hibernate.atlassian.net/browse/HSEARCH-3978?atlOrigin=eyJpIjoiODc... ) Exception when using elasticsearch and multiple analyzers for indexed field in projection query. ( https://hibernate.atlassian.net/browse/HSEARCH-3978?atlOrigin=eyJpIjoiODc... ) Issue Type: Bug Affects Versions: 5.11.5.Final Assignee: Unassigned Components: backend-elasticsearch Created: 31/Jul/2020 03:30 AM Labels: search Priority: Minor Reporter: Rokko_11 NA ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) Hello, I annotate a field of an @Indexed class with two analyzers. @Field(store = Store.YES, analyzer = @Analyzer(definition = "phonetic" )) @Field(store = Store.YES, analyzer = @Analyzer(definition = "ngram" )) private String value; Now I use following query: FullTextEntityManager fullTextEntityManager = Search.getFullTextEntityManager(em); Query query = fullTextEntityManager.getSearchFactory() .buildQueryBuilder() .forEntity(itemClass) .get() .keyword() .onField( "value" ) .matching(value) .createQuery(); FullTextQuery fullTextQuery = fullTextEntityManager.createFullTextQuery(query); fullTextQuery.setProjection( ProjectionConstants.ID, ProjectionConstants.OBJECT_CLASS, ProjectionConstants.SCORE, "value" ); List< Object []> resultList = fullTextQuery.getResultList(); When I use Lucene as backend it works. When I use Elasticsearch as backend i get following exception: Caused by: java.lang.IllegalStateException at com.google.gson.JsonArray.getAsString(JsonArray.java:226) at org.hibernate.search.elasticsearch.query.impl.PrimitiveProjection.addDocumentField(PrimitiveProjection.java:69) at org.hibernate.search.elasticsearch.query.impl.PrimitiveProjection.addDocumentField(PrimitiveProjection.java:43) at org.hibernate.search.elasticsearch.query.impl.TwoWayFieldBridgeProjection.convertFieldValue(TwoWayFieldBridgeProjection.java:60) at org.hibernate.search.elasticsearch.query.impl.TwoWayFieldBridgeProjection.convertHit(TwoWayFieldBridgeProjection.java:43) at org.hibernate.search.elasticsearch.query.impl.QueryHitConverter.convert(QueryHitConverter.java:186) at org.hibernate.search.elasticsearch.query.impl.IndexSearcher.convertQueryHit(IndexSearcher.java:138) at org.hibernate.search.elasticsearch.query.impl.ElasticsearchHSQueryImpl.queryEntityInfos(ElasticsearchHSQueryImpl.java:233) at org.hibernate.search.query.hibernate.impl.FullTextQueryImpl.doHibernateSearchList(FullTextQueryImpl.java:240) at org.hibernate.search.query.hibernate.impl.FullTextQueryImpl.list(FullTextQueryImpl.java:225) at org.hibernate.search.query.hibernate.impl.FullTextQueryImpl.getResultList(FullTextQueryImpl.java:124) Breakpointing in com.google.gson.JsonArray.getAsString(JsonArray.java:226) it turns out that this.elements has size of 2. When I add a third @Field annotation, this.elements is 3. When I remove a field, this.elements is 1 and it works. Kind regards ( https://hibernate.atlassian.net/browse/HSEARCH-3978#add-comment?atlOrigin... ) Add Comment ( https://hibernate.atlassian.net/browse/HSEARCH-3978#add-comment?atlOrigin... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100140- sha1:33445dc )