openjpa:值对象的参数异常非法
openjpa:值对象的参数异常非法
提问于 2013-05-01 05:05:14
有一个类似这样的NamedQuery：
@NamedQuery(name = "getOpakOdeslaniForPartner", query = "select 新的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，prij.idPrijemceTyp.idPrijemceTyp = :typPrijemce“
值对象有一个带有三个参数的构造函数。
有这样一个日志(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实际上我感觉卡住了，因为没有IllegalArgumentException的解释消息，我也找不到GeneratedConstructorAccessor747类的源代码。你知道这是怎么回事吗?该怎么解决这个问题？我猜一定是值对象构造函数或类有问题。
谢谢
回答 1
Stack Overflow用户
发布于 2013-05-01 05:14:14
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，您可以只选择这些字段来确保返回数据吗？
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原文链接：
https://stackoverflow.com/questions/16308954
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