DB2ではなくHibernateを使用しています。パラメータが列挙値のリストであるNameQueryを作成すると、getResultList()は不正な呼び出し例外をスローします。
@NamedQuery(
name="Deliverable.deliverableFiles",
query="Select distinct f " +
"from Deliverable d JOIN d.deliverableFiles f JOIN f.architectures a " +
"where d.visibility in (:visibilities) and a.architecture in (:architectures) " +
"and d.hidden = false and releaseType in (:releaseTypes) "
)
Javaメソッド:
public static List<DeliverableFile> getDeliverableFiles(EntityManager em, ArrayList<DeliverableVisibility> visibilities,
ArrayList<DeliverableArchitectureType> architectures,
ArrayList<DeliverableReleaseType> releaseTypes, int limit) {
Query deliverableFiles = em.createNamedQuery("Deliverable.deliverableFiles");
deliverableFiles.setFlushMode(FlushModeType.COMMIT);
deliverableFiles.setParameter("visibilities", visibilities);
deliverableFiles.setParameter("architectures", architectures);
deliverableFiles.setParameter("releaseTypes", releaseTypes);
List<DeliverableFile> files;
try {
files = deliverableFiles.getResultList(); // exceptions is thrown here
} // end try
catch (NoResultException nre) {
files = null;
} // end catch
return files;
} // end getDeliveries()
メソッドが呼び出されたときの例外:
ERROR: [jcc][1083][10406][4.2.73] Illegal conversion: can not convert from "byte[]" to "java.lang.String" ERRORCODE=-4474, SQLSTATE=null
Exception in thread "main" javax.persistence.PersistenceException: org.hibernate.exception.GenericJDBCException: [jcc][1083][10406][4.2.73] Illegal conversion: can not convert from "byte[]" to "java.lang.String" ERRORCODE=-4474, SQLSTATE=null
at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1377)
at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1300)
at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:266)
at **hidden**.jpa.main.Deliverable.getDeliverableFiles(Deliverable.java:68)
at **hidden**.dbtestbed.DBTestbed.main(DBTestbed.java:165)
Caused by: org.hibernate.exception.GenericJDBCException: [jcc][1083][10406][4.2.73] Illegal conversion: can not convert from "byte[]" to "java.lang.String" ERRORCODE=-4474, SQLSTATE=null
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:54)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:125)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:110)
at org.hibernate.engine.jdbc.internal.proxy.AbstractStatementProxyHandler.continueInvocation(AbstractStatementProxyHandler.java:129)
at org.hibernate.engine.jdbc.internal.proxy.AbstractProxyHandler.invoke(AbstractProxyHandler.java:81)
at $Proxy40.setBytes(Unknown Source)
at org.hibernate.type.descriptor.sql.VarbinaryTypeDescriptor$1.doBind(VarbinaryTypeDescriptor.java:57)
at org.hibernate.type.descriptor.sql.BasicBinder.bind(BasicBinder.java:92)
at org.hibernate.type.AbstractStandardBasicType.nullSafeSet(AbstractStandardBasicType.java:305)
at org.hibernate.type.AbstractStandardBasicType.nullSafeSet(AbstractStandardBasicType.java:300)
at org.hibernate.param.NamedParameterSpecification.bind(NamedParameterSpecification.java:66)
at org.hibernate.loader.hql.QueryLoader.bindParameterValues(QueryLoader.java:588)
at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1736)
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1697)
at org.hibernate.loader.Loader.doQuery(Loader.java:832)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:293)
at org.hibernate.loader.Loader.doList(Loader.java:2382)
at org.hibernate.loader.Loader.doList(Loader.java:2368)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2198)
at org.hibernate.loader.Loader.list(Loader.java:2193)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:470)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:355)
at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:195)
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1244)
at org.hibernate.internal.QueryImpl.list(QueryImpl.java:101)
at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:257)
... 2 more
Caused by: com.ibm.db2.jcc.a.SqlException: [jcc][1083][10406][4.2.73] Illegal conversion: can not convert from "byte[]" to "java.lang.String" ERRORCODE=-4474, SQLSTATE=null
at com.ibm.db2.jcc.a.cd.a(cd.java:650)
at com.ibm.db2.jcc.a.cd.a(cd.java:60)
at com.ibm.db2.jcc.a.cd.a(cd.java:94)
at com.ibm.db2.jcc.a.gc.a(gc.java:677)
at com.ibm.db2.jcc.a.vl.a(vl.java:1207)
at com.ibm.db2.jcc.a.vl.setBytes(vl.java:1174)
at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.setBytes(NewProxyPreparedStatement.java:235)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.hibernate.engine.jdbc.internal.proxy.AbstractStatementProxyHandler.continueInvocation(AbstractStatementProxyHandler.java:122)
... 24 more
ヒントや手がかりや考えは大歓迎です。