hibernate - Could not determine type for: java.util.Set for Jpa/Neo4J Cross Store Entity -


i have jpa entity acts neo4j cross store. of fields in entity saved mysql database except collection 'followers', stored in neo4j. problem collection 'followers'. throws exception "hibernate mappingexception: not determine type for: java.util.set". quick search yields bunch of jpa related solutions (e.g. adding onetomany annotation field etc) assume not relevant in case because collection saved in neo4j not mysql. 

stacktrace caused by: org.hibernate.mappingexception: not determine type for: java.util.set, @ table: game, columns: [org.hibernate.mapping.column(followers)]     @ org.hibernate.mapping.simplevalue.gettype(simplevalue.java:314)     @ org.hibernate.mapping.simplevalue.isvalid(simplevalue.java:292)     @ org.hibernate.mapping.property.isvalid(property.java:239)     @ org.hibernate.mapping.persistentclass.validate(persistentclass.java:469)     @ org.hibernate.mapping.rootclass.validate(rootclass.java:270)     @ org.hibernate.cfg.configuration.validate(configuration.java:1303)     @ org.hibernate.cfg.configuration.buildsessionfactory(configuration.java:1761)     @ org.hibernate.ejb.entitymanagerfactoryimpl.<init>(entitymanagerfactoryimpl.java:96)     @ org.hibernate.ejb.ejb3configuration.buildentitymanagerfactory(ejb3configuration.java:914)     ... 16 more  ------- @entity @table(name="game") @nodeentity(partial = true) public class game implements serializable{     private static final long serialversionuid = 1l;      @relatedto(type="game", direction=direction.incoming, elementclass = account.class)          @fetch   @graphproperty     private set<account> followers = new hashset<account>();        @id     @generatedvalue(strategy=identity)     @column(name="game_id")     private long gameid;     @column(name="name",unique=true)     private string name;     ....      //accessors      public long getgameid() {         return gameid;     }        public void setgameid(long gameid) {         this.gameid = gameid;     } ...     @override     public string tostring(){         return "...";     }    }    //jpa setup  @configuration @enabletransactionmanagement(mode=advicemode.aspectj) @enablejparepositories(value={"com.repository"}, entitymanagerfactoryref="entitymanagerfactory", transactionmanagerref="transactionmanager") @propertysource("classpath:db.properties") public class jpaconfig {     @autowired     private environment environment;      @bean     public platformtransactionmanager transactionmanager() {          jpatransactionmanager txmanager = new jpatransactionmanager();          txmanager.setentitymanagerfactory((entitymanagerfactory) entitymanagerfactory());         return txmanager;      }     @bean     public localcontainerentitymanagerfactorybean entitymanagerfactory() {               localcontainerentitymanagerfactorybean factory = new localcontainerentitymanagerfactorybean();         factory.setjpavendoradapter(new hibernatejpavendoradapter());         factory.setpackagestoscan("com.core");         factory.setjpapropertymap(apputil.jpaproperties());         factory.setdatasource(datasource());         return factory;      }           @bean         public drivermanagerdatasource datasource(){                 drivermanagerdatasource drivermanagerdatasource = new drivermanagerdatasource();             drivermanagerdatasource.setdriverclassname(environment.getrequiredproperty("jdbc.driverclassname"));             drivermanagerdatasource.seturl(environment.getrequiredproperty("jdbc.url"));             drivermanagerdatasource.setusername(environment.getrequiredproperty("jdbc.username"));             drivermanagerdatasource.setpassword(environment.getrequiredproperty("jdbc.password"));                   return drivermanagerdatasource;         }       }  //neo4j setup @configuration @componentscan(basepackages={"..."}) @enabletransactionmanagement(mode=advicemode.aspectj) @enableneo4jrepositories(value={"..."}) public class neo4jconfig extends crossstoreneo4jconfiguration{      @bean(destroymethod = "shutdown")     @scope(scope_prototype)     public springrestgraphdatabase graphdatabaseservice(){         springrestgraphdatabase springrestgraphdatabase = new springrestgraphdatabase("http://localhost:7474/db/data");         return springrestgraphdatabase;      }      @bean     public neo4jtemplate neo4jtemplate(){         return new neo4jtemplate((graphdatabase) graphdatabaseservice());     }      @bean     public neo4jmappingcontext neo4jmappingcontext() {         return new neo4jmappingcontext();     }  }

i have uploaded project simulate following problem. download , run accounttester.class see exception - http://filebin.ca/1pgiysebag4q/crossstore.zip.


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