Question

我似乎在使用以下JPA代码段将 PostgreSQL资金类型映射到 java.util.Currency 类型时出现问题：

@Basic(optional = true)                                 
@Column(name = "cafl_bubgeted_amount")
private Currency bubgetedAmount;

column cafl_budgeted_amount 在PostgreSQL中的类型为 money 。

当代码部署在JBoss AS 7.1.1中时，我得到帖子末尾显示的跟踪。有人处理过该映射吗？

在JBoss AS 7.1.3中部署时的

跟踪

Caused by: java.lang.IllegalArgumentException
    at java.util.Currency.getInstance(Currency.java:303) [rt.jar:1.7.0_07]
    at java.util.Currency.getInstance(Currency.java:284) [rt.jar:1.7.0_07]
    at org.hibernate.type.descriptor.java.CurrencyTypeDescriptor.wrap(CurrencyTypeDescriptor.java:66) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.type.descriptor.java.CurrencyTypeDescriptor.wrap(CurrencyTypeDescriptor.java:35) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.type.descriptor.sql.VarcharTypeDescriptor$2.doExtract(VarcharTypeDescriptor.java:66) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.type.descriptor.sql.BasicExtractor.extract(BasicExtractor.java:65) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:269) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:265) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.type.AbstractStandardBasicType.nullSafeGet(AbstractStandardBasicType.java:238) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.type.AbstractStandardBasicType.hydrate(AbstractStandardBasicType.java:357) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.hydrate(AbstractEntityPersister.java:2695) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.loader.Loader.loadFromResultSet(Loader.java:1552) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.loader.Loader.instanceNotYetLoaded(Loader.java:1484) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.loader.Loader.getRow(Loader.java:1384) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:640) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.loader.Loader.doQuery(Loader.java:856) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:289) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.loader.Loader.loadEntity(Loader.java:2058) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:82) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:72) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:3697) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:439) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:420) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:204) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:251) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:148) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:954) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.internal.SessionImpl.internalLoad(SessionImpl.java:903) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:610) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.type.EntityType.resolve(EntityType.java:438) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.engine.internal.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:150) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:1006) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.loader.Loader.doQuery(Loader.java:883) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:289) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.loader.Loader.doList(Loader.java:2463) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.loader.Loader.doList(Loader.java:2449) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2279) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.loader.Loader.list(Loader.java:2274) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:470) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:355) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:196) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1115) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.internal.QueryImpl.list(QueryImpl.java:101) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
    at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:252) [hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final]
    at gr.neuropublic.gaia.cashflow.services.TransactionGroupService.copyTransactionGroups(TransactionGroupService.java:29) [cashflow-ejb.jar:]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_07]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [rt.jar:1.7.0_07]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_07]
    at java.lang.reflect.Method.invoke(Method.java:601) [rt.jar:1.7.0_07]
    at org.jboss.as.ee.component.ManagedReferenceMethodInterceptorFactory$ManagedReferenceMethodInterceptor.processInvocation(ManagedReferenceMethodInterceptorFactory.java:72) [jboss-as-ee-7.1.1.Final.jar:7.1.1.Final]
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
    at org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
    at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:36) [jboss-as-ee-7.1.1.Final.jar:7.1.1.Final]
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
    at org.jboss.as.jpa.interceptor.SBInvocationInterceptor.processInvocation(SBInvocationInterceptor.java:47) [jboss-as-jpa-7.1.1.Final.jar:7.1.1.Final]
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
    at org.jboss.invocation.InitialInterceptor.processInvocation(InitialInterceptor.java:21) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
    at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
    at org.jboss.as.ee.component.interceptors.ComponentDispatcherInterceptor.processInvocation(ComponentDispatcherInterceptor.java:53) [jboss-as-ee-7.1.1.Final.jar:7.1.1.Final]
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
    at org.jboss.as.ejb3.component.pool.PooledInstanceInterceptor.processInvocation(PooledInstanceInterceptor.java:51) [jboss-as-ejb3-7.1.1.Final.jar:7.1.1.Final]
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
    at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:228) [jboss-as-ejb3-7.1.1.Final.jar:7.1.1.Final]
    ... 54 more

Answer 1

java.util.Currency表示货币，如美元或欧元，而非Postgres MONEY的实际金额，如456.34。例外是因为它试图将该数字解析为货币代码。

Answer 2

我强烈建议您现在避免使用MONEY并使用NUMERIC。有许多具体问题。它的运算效果不如NUMERIC那么好，它所代表的货币取决于你的本地化设置，这意味着只要你需要多种货币，就会发生不好的事情。更糟糕的是，具有不同本地化设置的两个不同用户将看到相同的金额，但指定了不同的货币.....

另外DECIMAL和NUMERIC比MONEY更好地支持跨数据库（但是DECIMAL只是PostgreSQL中NUMERIC的单向别名）所以最低的共同点是建议使用更通用，无损的基数10浮点数而不是而不是具有有趣的角落案件和陷阱的专门金额。

PostgreSQL Money类型::如何将它映射到Hibernate JPA？

跟踪

2 个答案: