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composite id with different class

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weaselboy1976

Post subject: composite id with different class

Posted: Thu Apr 07, 2005 3:13 pm

Beginner

Joined: Fri Feb 04, 2005 2:44 pm
Posts: 25
Location: Buffalo, NY

Ok, so I have a mapping like this where there is a composite id. I use the separate class (DogID) for the primaray key. This works great with the load function (ex. load(Dog, DogID)). But when I obtain an object from a Query, the ID elements (firstName, lastName, birthDate) don't get loaded. The non-key properties (age) do get loaded. Do I have to do something different?

<class name="Dog" table="DOG">

<composite-id class="DogID">
<key-property name="firstName"
column="firstName"
type="string"/>
<key-property name="lastName"
column="lastName"
type="string"/>
<key-property name="birthDate"
column="bday"
type="date"/>
</composite-id>

<property name="age" type="int">
<column name="age" sql-type="integer" not-null="true"/>
</property>

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Satish Srinivasan

Post subject:

Posted: Thu Apr 07, 2005 5:29 pm

Beginner

Joined: Thu Mar 24, 2005 5:21 pm
Posts: 21

Try naming your composite-id, like:

Code:

 <composite-id name="id" class="DogID">
 ...

HTH
Satish

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weaselboy1976

Post subject:

Posted: Fri Apr 08, 2005 8:33 am

Beginner

Joined: Fri Feb 04, 2005 2:44 pm
Posts: 25
Location: Buffalo, NY

Adding the name="id" causes an error:

Code:

08:31:05,609  INFO Binder:230 - Mapping class: Dog -> DOG
08:31:05,640 ERROR Configuration:255 - Could not compile the mapping document
net.sf.hibernate.PropertyNotFoundException: field not found: id
   at net.sf.hibernate.property.DirectPropertyAccessor.getField(DirectPropertyAccessor.java:74)
   at net.sf.hibernate.property.DirectPropertyAccessor.getField(DirectPropertyAccessor.java:80)
   at net.sf.hibernate.property.DirectPropertyAccessor.getGetter(DirectPropertyAccessor.java:88)
   at net.sf.hibernate.util.ReflectHelper.getter(ReflectHelper.java:81)
   at net.sf.hibernate.util.ReflectHelper.reflectedPropertyClass(ReflectHelper.java:90)
   at net.sf.hibernate.cfg.Binder.bindRootClass(Binder.java:287)
   at net.sf.hibernate.cfg.Binder.bindRoot(Binder.java:1257)
   at net.sf.hibernate.cfg.Configuration.add(Configuration.java:252)
   at net.sf.hibernate.cfg.Configuration.addInputStream(Configuration.java:288)
   at net.sf.hibernate.cfg.Configuration.addResource(Configuration.java:336)
   at net.sf.hibernate.cfg.Configuration.doConfigure(Configuration.java:1018)
   at net.sf.hibernate.cfg.Configuration.doConfigure(Configuration.java:974)
   at net.sf.hibernate.cfg.Configuration.configure(Configuration.java:902)
   at net.sf.hibernate.cfg.Configuration.configure(Configuration.java:888)
   at converter.ConvertToLegacy.convert(ConvertToLegacy.java:47)
   at converter.ConvertToLegacy.main(ConvertToLegacy.java:32)

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Satish Srinivasan

Post subject:

Posted: Fri Apr 08, 2005 8:42 am

Beginner

Joined: Thu Mar 24, 2005 5:21 pm
Posts: 21

mmm - you seem to be using field access rather than going through the accessor method
The obvious question now is, are you sure your primary key attribute is called id ?
HTH
Satish

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