Hello folks,

So 3 tables and their mappings .. finding problem removing the records from table..

Subject
ID (SEQ)
OtherSubjectDetails

SubjectAphasia
ID (SEQ)
Subject_Id
Aphasia_Id

Aphasia
ID (SEQ)
Name

Mappings :
Subject.hbm.xml
===========
<set name="aphasiaTypes" inverse="true" cascade="all>
<key column="SUBJECT_ID"/>
<one-to-many class="com.imc.sts.domain.the.SubjectAphasia" />
</set>

SubjectAphasia.hbm.xml
================
<many-to-one name="parentSubject" class="com.imc.sts.domain.the.Subject" column="SUBJECT_ID"/>
<many-to-one name="aphasia" class="com.imc.sts.domain.Aphasia" column="APHASIA_ID" cascade="all" />

Aphasia.hbm.xml
===========
<property name="name" column="APHASIA_NAME" type="java.lang.String" length="32" />

Using a Set in Subject domain object I can add the values to SubjectAphasia table. But in edit when I get the old values and make some changes to the set and add them again to the domain object they are not being reflected to the DB. I doubt if there is any error in the mappings. If anybody needs code.. I will send it ..

Thanx,

nitin

Do you have good equals() and hashCode() methods in SubjectAphasia?

Also, since you have a surrogate id in the SubjectAphasia table, why not try an idbag instead of a set?

thanx greg.. yeah I do have proper implementation of equals and hashcode. I modified the domain object for equals and hashcode methods.

subjectAphasiaTypesSet.clear();

for(int i = 0; i < aphasiaTypes.length; i++) {
log.info("aphasiaTypes[" + i + "] = " + aphasiaTypes[i]);
log.info("aphasia object = " + tDao.getAphasiaById(aphasiaTypes[i]));

SubjectAphasia subjectAphasia = new SubjectAphasia();
subjectAphasia.setParentSubject(subject);
subjectAphasia.setAphasia(tDao.getAphasiaById(aphasiaTypes[i]));

log.info("Subject Aphasia = " + subjectAphasia);
subject.getAphasiaTypes().add(subjectAphasia);
}

look at inverse="true" meaning, http://www.hibernate.org/155.html

Oops. Didn't notice that you have inverse="true" on the set. See http://www.hibernate.org/155.html, especially the following line: "Changes made to the association on the side of the inverse="true" are not persisted in DB."

and of course look at what inverse="false" will do... :)

I have tried it both ways.. keeping inverse="true/false" still not working

nitin