Question

有一个像这样的NamedQuery：

@NamedQuery(name = "getOpakOdeslaniForPartner", query = "select

new com.vo.OpakOdeslaniVO（opak.pocetPokusu，opak.idSekvenceOpakovani.idOpakSekvence，opak.idSekvenceOpakovani.sekvence）来自GmOpakOdeslani opak，GmPrijemce prij 其中opak.idTypZpravy.idTypZpravy =：typZpravy和opak.idPrijemce = prij和prij.idPrijemceTyp.idPrijemceTyp =：typPrijemce“

value对象具有带三个参数的单个构造函数。

有一个这样的日志（WebLogic 11g，HP-UX）：

Caused by: <openjpa-1.1.1-SNAPSHOT-r422266:1172209 nonfatal user error> org.apache.openjpa.util.UserException: There was an error packing the projection and/or aggregate results of the query into result type "class com..vo.OpakOdeslaniVO".  See the nested Throwable exception for details.
    at org.apache.openjpa.kernel.ResultPacker.packUserType(ResultPacker.java:262)
    at org.apache.openjpa.kernel.ResultPacker.pack(ResultPacker.java:225)
    at org.apache.openjpa.kernel.QueryImpl$PackingResultObjectProvider.getResultObject(QueryImpl.java:1960)
    at com..service.OpakOdeslani.getOpakOdeslaniForPartner(.java:52)
    at sun.reflect.GeneratedMethodAccessor1516.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)

Caused by: java.lang.IllegalArgumentException
    at sun.reflect.GeneratedConstructorAccessor747.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at org.apache.openjpa.kernel.ResultPacker.packUserType(ResultPacker.java:235) ... 114 more

实际上我觉得卡住了，因为IllegalArgumentException没有解释消息，我找不到GeneratedConstructorAccessor747类的源代码。任何想法，发生了什么以及如何解决这个问题？我想值对象构造函数或类必定存在一些问题。

谢谢

Answer 1

确保opak.pocetPokusu, opak.idSekvenceOpakovani.idOpakSekvence, opak.idSekvenceOpakovani.sekvence的类型与com.vo.OpakOdeslaniVO的构造函数提供的类型相同。

作为调试点，您可以选择这些字段以确保返回数据吗？

openjpa：值对象的非法参数异常

1 个答案: