Spring @QuerydslPredicate Questions

Question

Libaries Used

Spring Boot 1.3.2.RELEASE

QueryDSL 3.7.2

QueryDSL Maven Plugin 1.1.3

Hibernate 4.3.11.Final

Issue

Currently

Answer 1

I ran into the same error. However I noticed that using the QuerydslAnnotationProcessor plugin (instead of the JPA annotation processor) allows me to query sub collections of entities as expected. You just have to mark all of your entity classes with the @QueryEntity annotation. (The JPA annotation processor automatically generates query classes for @Entity annotated classes.)

In your pom:

          
                com.mysema.maven
                apt-maven-plugin
                1.1.3
                
                    
                        generate-sources
                        
                            process
                        
                        
                            target/generated-sources/annotations
                            com.querydsl.apt.QuerydslAnnotationProcessor
                        
                    
                
                
                    
                        com.querydsl
                        querydsl-apt
                        4.1.3
                    
                
            

I'm believe I was running into the exception you encountered because I changed from the JPA Annotation Processor to the QuerydslAnnotationProcessor, for some reason I do not recall, and neglected to mark the entity class of the list in question with the @QueryEntity annotation. However I also believe I have another Spring-Data-Rest\JPA backed API that uses the JPA Annotation Processor built in August 2017, and I believe querying sub collections of entities works as expected. I'll be able to confirm that later today, and provide the versions of the relevant dependencies if that is the case. Perhaps this issue has been fixed.