I am trying to resolve an issue related to filtering in hibernate, specially when dealing with composite Id's
I have a AttrDesc.hbm.xml
<hibernate-mapping>
<class name="AttrDesc" table="ATTRDESC">
<composite-id>
<key-property name="attr_id" type="long"/>
<key-property name="language_id"/>
</composite-id>
<property name="attrtype_id"/>
<property name="name"/>
<property name="description"/>
<property name="description2"/>
<property name="field1"/>
<property name="groupname"/>
<property name="qtyunit_id"/>
<property name="noteinfo"/>
<filter name="langFilter" condition=":langid=language_id"/>
</class>
<filter-def name="langFilter"> <filter-param name="langid" type="int"/> </filter-def>
</hibernate-mapping>
Issue: I am unable to apply filter on the language_id which is part of composite-id
while debugging I found that the filter-param langid is some how has value as 0 where as actual value that I set using below line of code is -1
session.enableFilter("langFilter").setParameter("langid", -1);
Note: that works if I move language_id out of the composite-id
any help is appreciated, Thanks
For Hibernate jpa 2.1 and above you should modify the mapping a little.
<composite-id name="attrDescId" class="AttrDescId">
<key-property name="attr_id" type="long"/>
<key-property name="language_id"/>
</composite-id>
Accordingly, you will need to change the model class to be
public class AttrDesc {
AttrDescId id;
String name;
//other fields
}
public class AttrDescId {
long attr_id;
String language_id;
}
And then with root.get("attrDescId").get("language_id")
you will be able to put filter on language_id
. Elaborately,
CriteriaBuilder builder = sessionFactory.getCriteriaBuilder();
CriteriaQuery<AttrDesc> query = builder.createQuery(AttrDesc.class);
Root<AttrDesc> root = query.from(AttrDesc.class);
query.select(root).where(builder.equal(root.get("attrDescId").get("language_id"), "the filter value"));
Query<AttrDesc> q = sessionFactory.getCurrentSession().createQuery(query);
List<AttrDesc> attrDescList = q.getResultList();
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