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Yves
 Post subject: Problem with dates when parsing a XML file
PostPosted: Wed Nov 02, 2005 6:01 pm 
Newbie

Joined: Mon Oct 24, 2005 9:16 am
Posts: 7
I'm getting a parse error when parsing a date from a XML file. I'm using entitymode.dom4j to load tables. The mapping file specify a date type. If i change it for string, no error is generated.

Code:
Hibernate: insert into agegroup (lowend, highend, name) values (?, ?, ?)
<Period id="1">
      <startdate>2005-5-5</startdate>
      <enddate/>
      <name>High Season</name>
      
   </Period>
Exception in thread "main" org.hibernate.HibernateException: could not parse XML
   at org.hibernate.type.DateType.fromStringValue(DateType.java:95)
   at org.hibernate.type.CalendarDateType.fromStringValue(CalendarDateType.java:54)
   at org.hibernate.type.NullableType.fromXMLString(NullableType.java:102)
   at org.hibernate.type.NullableType.fromXMLNode(NullableType.java:126)
   at org.hibernate.property.Dom4jAccessor$ElementGetter.get(Dom4jAccessor.java:192)
   at org.hibernate.property.Dom4jAccessor$Dom4jGetter.getForInsert(Dom4jAccessor.java:93)
   at org.hibernate.tuple.AbstractTuplizer.getPropertyValuesToInsert(AbstractTuplizer.java:189)
   at org.hibernate.persister.entity.BasicEntityPersister.getPropertyValuesToInsert(BasicEntityPersister.java:3005)
   at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:216)
   at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:160)
   at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:95)
   at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:184)
   at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)
   at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:173)
   at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)
   at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:69)
   at org.hibernate.impl.SessionImpl.save(SessionImpl.java:481)
   at com.optionaltours.util.TourLoader.recurLoadXml(TourLoader.java:74)
   at com.optionaltours.util.TourLoader.recurLoadXml(TourLoader.java:71)
   at com.optionaltours.util.TourLoader.loadDatabaseFromXml(TourLoader.java:56)
   at com.optionaltours.util.TourLoader.main(TourLoader.java:33)
Caused by: java.text.ParseException: Unparseable date: "2005-5-5"
   at java.text.DateFormat.parse(DateFormat.java:335)
   at org.hibernate.type.DateType.fromStringValue(DateType.java:92)
   ... 20 more
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tenwit
 Post subject: See java.text.SimpleDateFormat
PostPosted: Wed Nov 02, 2005 6:11 pm 
Expert
Expert

Joined: Thu Dec 23, 2004 9:08 pm
Posts: 2008
As the exception says, this is a parse problem in SimpleDateFormat. Hibernate's DateType uses new SimpleDateFormat().parse(<yourdate>) to parse the date, so if you want to use a custom format like "yyyy-MM-dd", you'll have to set up your own usertype for it.

Alternatively you could use a format that SimpleDateFormat() (default constructor) handles. This is dependent on your locale. See the javadocs of SimpleDateFormat for more specifics.

If (almost) all your dates throughout your application are in the same format, then probably the best solution is to configure your locale. That's not a hibernate solution; see a more general java forum to learn how to do that.
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