I have this problem. Please... How can i fix it?

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The class that have the getid
public void setid(BigInteger home)
{
id = home;

}
public BigInteger getid()
{
return id;
}
Hibernate version:
3.0

Mapping documents:
<class name="Honey" table="honey" >

<composite-id>
<key-property name="id"/>
</composite-id>
<property name="name"></property>
<property name="taste" type="string" update="true"></property>
<many-to-one name="id" column="id" class="casa" insert="false" update="false" />

</class>

<class name="casa" table="casa">
<id name="id" column="id"></id>

<property name="name" column="name"></property>
</class>
Code between sessionFactory.openSession() and session.close():

Full stack trace of any exception that occurs:
01:11:18,004 ERROR BasicPropertyAccessor:167 - IllegalArgumentException in class: de.laliluna.example.casa, getter method of property: id

org.hibernate.PropertyAccessException: IllegalArgumentException occurred calling getter of de.laliluna.example.casa.id

at org.hibernate.property.BasicPropertyAccessor$BasicGetter.get(BasicPropertyAccessor.java:171)

at org.hibernate.tuple.AbstractEntityTuplizer.getIdentifier(AbstractEntityTuplizer.java:176)

at org.hibernate.persister.entity.AbstractEntityPersister.getIdentifier(AbstractEntityPersister.java:3257)

at org.hibernate.persister.entity.AbstractEntityPersister.isTransient(AbstractEntityPersister.java:2983)

at org.hibernate.engine.ForeignKeys.isTransient(ForeignKeys.java:181)

at org.hibernate.engine.ForeignKeys$Nullifier.isNullifiable(ForeignKeys.java:137)

at org.hibernate.engine.ForeignKeys$Nullifier.nullifyTransientReferences(ForeignKeys.java:69)

at org.hibernate.engine.ForeignKeys$Nullifier.nullifyTransientReferences(ForeignKeys.java:47)

at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:263)

at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:167)

at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:114)

at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:186)

at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)

at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:175)

at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)

at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)

at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:559)

at org.hibernate.impl.SessionImpl.save(SessionImpl.java:547)

at org.hibernate.impl.SessionImpl.save(SessionImpl.java:543)

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:324)

at org.hibernate.context.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:301)

at $Proxy0.save(Unknown Source)

at de.laliluna.example.TestExample.createHoney(TestExample.java:162)

at de.laliluna.example.TestExample.main(TestExample.java:50)

Caused by: java.lang.IllegalArgumentException: this is not an instance of the method's owning class

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:324)

at org.hibernate.property.BasicPropertyAccessor$BasicGetter.get(BasicPropertyAccessor.java:145)

... 26 more



Name and version of the database you are using:
Mysql

The generated SQL (show_sql=true):

Debug level Hibernate log excerpt:

Why have you set up id as a composite-id when it clearly isn't? This could be made to work with the composite id, as the problem is simply that you're putting a simple type somewhere that a composite type is expected. However, changing id to a simple id will also work, and it's a better solution.

Thanks Tenwir for answer my question...

Im using <composite-id> 'cause the id its a foreign key its the id from the table "casa" .... So which its the way to declare that a element its a foreign key?

Thanks Tenwit for answer my question...

Im using <composite-id> 'cause the id its a foreign key its the id from the table "casa" .... So which its the way to declare that a element its a foreign key?

Set it up the normal way, using <id>. Use the "foreign" generator. You should add unique="true" to the inverse mappig (the many-to-one), and call it "Casa". id is the value, it has the same value as casa's id.

This is the source of your exception. Your mapping says that "id" is of type "Casa", but your java says it's of type BigInteger. id should be a BigInteger in your mapping, and you should have a separate Casa field, being the inverse reference.