与上一个问题有关。我有一个使用Hibernate的Spring
Roo应用程序，它使用JTS将Geometry对象写入PostGIS数据库。我相信我已经解决了定义我的Geometry对象时遇到的问题，现在Hibernate正在执行其persist（）方法，但是在它到达数据库之前就出了问题，并且在下面出现了异常。

这是一些有趣的行。首先从Hibernate日志中，要持久化的对象，然后是一个SQL查询（大概替换了？）：

...
DEBUG org.hibernate.pretty.Printer - com.test.LandUse{id=1, centerPoint=POINT (5 6), version=0}
...
DEBUG org.hibernate.SQL - insert into land_use (center_point, version, id) values (?, ?, ?)
...

然后发生了更多的事情，尽管没有明显不好的事情。但是，我看不到任何“最终” SQL，并且正在尝试回滚事务。然后：

org.springframework.transaction.TransactionSystemException: Could not commit JPA transaction; nested exception is javax.persistence.RollbackException: Error while committing the transaction
    at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:521)
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:754)
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723)
    at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:393)
    at org.springframework.transaction.aspectj.AbstractTransactionAspect.ajc$afterReturning$org_springframework_transaction_aspectj_AbstractTransactionAspect$3$2a73e96c(AbstractTransactionAspect.aj:78)
    at com.test.LandUse_Roo_Jpa_ActiveRecord.ajc$interMethod$com_test_LandUse_Roo_Jpa_ActiveRecord$com_test_LandUse$persist(LandUse_Roo_Jpa_ActiveRecord.aj:44)
    at com.test.LandUse.persist(LandUse.java:1)
    at com.test.LandUse_Roo_Jpa_ActiveRecord.ajc$interMethodDispatch1$com_test_LandUse_Roo_Jpa_ActiveRecord$com_test_LandUse$persist(LandUse_Roo_Jpa_ActiveRecord.aj)
    at com.test.LandUseController_Roo_Controller.ajc$interMethod$com_test_LandUseController_Roo_Controller$com_test_LandUseController$create(LandUseController_Roo_Controller.aj:29)
    at com.test.LandUseController.create(LandUseController.java:1)
...
Caused by: javax.persistence.RollbackException: Error while committing the transaction
at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:93)
    at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:512)
    ... 54 more
Caused by: java.lang.UnsupportedOperationException
    at org.hibernate.spatial.GeometrySqlTypeDescriptor.getBinder(GeometrySqlTypeDescriptor.java:52)
    at org.hibernate.type.AbstractStandardBasicType.nullSafeSet(AbstractStandardBasicType.java:283)
    at org.hibernate.type.AbstractStandardBasicType.nullSafeSet(AbstractStandardBasicType.java:278)
    at org.hibernate.type.AbstractSingleColumnStandardBasicType.nullSafeSet(AbstractSingleColumnStandardBasicType.java:89)
    at org.hibernate.persister.entity.AbstractEntityPersister.dehydrate(AbstractEntityPersister.java:2184)
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2430)
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2874)
    at org.hibernate.action.EntityInsertAction.execute(EntityInsertAction.java:79)
    at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:273)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:265)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:184)
    at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)
    at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51)
    at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1216)
    at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:383)
    at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:133)
    at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:76)
    ... 55 more

我一直在努力使这个简单的用例（一个只有一个Geometry属性的对象）工作了一个多星期，并且已经不知所措了。如果我用String替换Geometry对象，它就可以正常工作。有谁知道是什么原因导致这种错误？

编辑：
Thierry在下面的回答让我戳了一下源代码，并且我注意到抛出了异常GeometrySqlTypeDescriptor，其中包含一些有趣的内容：

/**
 * A generic <code>SqlTypeDescriptor</code>, intended to be remapped
 * by the spatial dialect.
 *
 * @author Karel Maesen, Geovise BVBA
 *         creation-date: 7/27/11
 */
public class GeometrySqlTypeDescriptor implements SqlTypeDescriptor {

    public static final GeometrySqlTypeDescriptor INSTANCE = new GeometrySqlTypeDescriptor();

    @Override
    public int getSqlType() {
        return 3000; //this value doesn't conflict with presently defined java.sql.Types values.
    }

    @Override
    public boolean canBeRemapped() {
        return true;
    }

    @Override
    public <X> ValueBinder<X> getBinder(JavaTypeDescriptor<X> javaTypeDescriptor) {
        throw new UnsupportedOperationException();
    }

    @Override
    public <X> ValueExtractor<X> getExtractor(JavaTypeDescriptor<X> javaTypeDescriptor) {
        throw new UnsupportedOperationException();
    }
}

特别要注意的是，类注释暗示了Hibernate方言映射显然存在问题。不幸的是，我不知道这意味着什么，但是由于某种版本的不匹配，我正在猜测。（另请注意，根据我之前的错误，声明了SQL类型3000的声明！）

org.hibernate.spatial.dialect.postgis.PostgisDialect根据Hibernate
Spatial使用指南，我当前的方言是。我正在使用Hibernate
Spatial 4.0-M1，JTS 1.12和PostGIS 2.0.1。我可能会尝试使用几种不同版本的PostGIS，尤其是因为这是Hibernate
Spatial应该提供但似乎没有提供的依赖项。