I know this has been asked a lot, but I seem to be having a different problem. I saw that there is a bug in Hibernate that struggles with a SumFunction ignoring custom user types, but I'm not using a custom user type to my knowledge. I'm basically trying to create a new object that is a roll-up of an existing mapping bean, however I receive a NullPointerException against some Hibernate dialect function. I tried using both Double and BigDecimal as my value field type, but both provide me the same error message on deployment. Please help!
Here's some code:
Mapped bean:
@Entity @Table(name = "v_summary_report") public class SummaryReportView implements java.io.Serializable { private static final long serialVersionUID = 1L; @Id @Column(name = "id") private String id; @Column(name = "region") private String region; @Column(name = "market") private String market; @Column(name = "proj_year_month") private String projectionYearMonth; @OneToOne(cascade={CascadeType.DETACH}) @JoinColumn(name="attrib_id", referencedColumnName="attrib_id") private Attribute attribute; @Column(name = "total_value") private BigDecimal value; /* other stuff */ } Named query being called:
@NamedQuery(name = "findSummaryReportTotalByRegion", query = " SELECT new com.rac.projections.bean.SummaryReportTotal(srv.projectionYearMonth, srv.attribute, sum(value)) from SummaryReportView srv where srv.region = :region group by srv.projectionYearMonth, srv.attribute"), Total bean definition:
public class SummaryReportTotal { private String projectionYearMonth; private Attribute attribute; private BigDecimal value; public SummaryReportTotal() { super(); } public SummaryReportTotal(String projectionYearMonth, Attribute attribute, BigDecimal value) { this.projectionYearMonth = projectionYearMonth; this.attribute = attribute; this.value = value; } /* other stuff */ } Stacktrace :
Caused by: java.lang.NullPointerException at org.hibernate.dialect.function.StandardAnsiSqlAggregationFunctions$SumFunction.determineJdbcTypeCode(StandardAnsiSqlAggregationFunctions.java:145) at org.hibernate.dialect.function.StandardAnsiSqlAggregationFunctions$SumFunction.getReturnType(StandardAnsiSqlAggregationFunctions.java:157) at org.hibernate.hql.internal.ast.util.SessionFactoryHelper.findFunctionReturnType(SessionFactoryHelper.java:406) at org.hibernate.hql.internal.ast.tree.AggregateNode.getDataType(AggregateNode.java:83) at org.hibernate.hql.internal.ast.tree.ConstructorNode.resolveConstructorArgumentTypes(ConstructorNode.java:166) at org.hibernate.hql.internal.ast.tree.ConstructorNode.prepare(ConstructorNode.java:141) at org.hibernate.hql.internal.ast.HqlSqlWalker.processConstructor(HqlSqlWalker.java:1019) at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectExpr(HqlSqlBaseWalker.java:2150) at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectExprList(HqlSqlBaseWalker.java:2016) at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectClause(HqlSqlBaseWalker.java:1451) at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:571) at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:299) at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:247) at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:248) at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:183) at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:136) at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:105) at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:80) at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:168) at org.hibernate.internal.SessionFactoryImpl.checkNamedQueries(SessionFactoryImpl.java:1032) at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:506) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1750) at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:94) at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:905) at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:890) at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:74) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:225) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:308) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1477) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1417) ... 45 more