LSPayload.java 文件源码

@ElementCollection(fetch = FetchType.EAGER)
@CollectionTable(name = "User_Message_Attr", joinColumns = {
        @JoinColumn(referencedColumnName = "Id", name = "PayloadId") })
@Column(name = "Value")
@MapKeyColumn(name = "Key")
public Map<String, String> getAttr() {
    return attr;
}