使用Root.join获取错误无法解析路径的属性

Question

我正在做这样的多选：

          cq.multiselect(
            root.get("mxMsgPk"),
            root.get("referenceNo"),
            root.join("connectivityMsg", JoinType.LEFT)
                    .get("msgId"),
            root.get("inOutFlag"),
            root.join("messageStatusEntity", JoinType.LEFT)
                    .get("messageStatusId"),
            root.get("creationDate"),
            root.join("sourceMxXrefsEntity", JoinType.LEFT)
                    .join("sourceMsgEntity", JoinType.LEFT)
                    .join("sourceSystemMsg", JoinType.LEFT)
                    .get("msgId"),
            root.join("errorMsgEntity", JoinType.LEFT)
                    .get("referenceNo"),
            root.join("errorMsgEntity", JoinType.LEFT)
                    .get("errorMsgPk"),
            root.join("sourceMxXrefsEntity", JoinType.LEFT)
                    .join("sourceMsgEntity", JoinType.LEFT)
                    .get("sourceMsgPk"));

我的root实体是这样的：

@Entity
@Table(name="XYZ")
@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
@NamedQuery(name="MxMsgEntity.findAll", query="SELECT m FROM MxMsgEntity m")
public class MxMsgEntity extends COMsgEntity {
private long mxMsgPk;
  private Set <SourceMxXrefEntity> sourceMxXrefsEntity;

public MxMsgEntity() {
}


@Id
@SequenceGenerator(name="EXC_MX_MSG", sequenceName = "SEQ_EXC_MX_MSG")
@GeneratedValue(strategy=GenerationType.AUTO, generator = "EXC_MX_MSG")
@Column(name="MX_MSG_PK", unique=true, nullable=false, precision=10)
public long getMxMsgPk() {
    return this.mxMsgPk;
}

public void setMxMsgPk(long mxMsgPk) {
    this.mxMsgPk = mxMsgPk;
}


public void setSourceMxXrefEntity(Set<SourceMxXrefEntity> sourceCOXrefsEntity) {
    this.sourceMxXrefsEntity = sourceCOXrefsEntity;     
}


//bi-directional many-to-one association to SourceMxXrefEntity
@OneToMany(mappedBy="mxMsgEntity")
public Set<SourceMxXrefEntity> getSourceMxXrefEntity() {
    return sourceMxXrefsEntity;
}

}

我收到以下错误：

无法针对路径解析属性[sourceMxXrefsEntity]。

我必须使用Join，因为SourceMxXrefEntity是MxMsgEntity上的Set。

不确定我缺少什么

Answer 1

带注释的getter名为getSourceMxXrefEntity()。因此，映射属性的名称为sourceMxXrefEntity而不是sourceMxXrefsEntity。