====== Connected with hibernate ======

===== Hibernate forum links =====

  * The ''ehcache.xml'' file location: the problem was raised many times but still is actual:
    [[http://forum.hibernate.org/viewtopic.php?t=946843|topic 1]],
    [[http://forum.hibernate.org/viewtopic.php?t=944832|topic 2]],
    [[http://track.sipfoundry.org/browse/XCF-494|topic 3]],
    [[https://sourceforge.net/forum/message.php?msg_id=3305407|topic 4]],
    [[https://sourceforge.net/forum/message.php?msg_id=3284483|topic 5]]
  * Additional where-clause limitations for ''<many-to-many>'' and ''<many-to-one>'' associations:
    [[http://forum.hibernate.org/viewtopic.php?t=948699|topic 1]],
    [[http://forum.hibernate.org/viewtopic.php?t=948812|topic 2]]

===== Hibernate questions answered =====

  * ''UserType'' example of mapping ''Enum'' to ''int'' is [[https://www.hibernate.org/312.html|here]], ''Enum'' to ''string'' is [[https://www.hibernate.org/272.html|here]]. Hibernate standard class is in ''hibernate-annotations''. Sample of usage:
    <code xml|hibernate-mapping>
<hibernate-mapping>
	<class name="Relationship" table="relationships">
		<list name="semanticTypes" table="semantic_types" fetch="select" lazy="false">
			<key column="parentId"/>
			<list-index column="ind"/>
			
			<element column="semanticType">
				<type name="org.hibernate.type.EnumType">
					<param name="enumClass">org.mycompany.dao.SemanticType</param>
				</type>
			</element>
		</list>
	</class>
</hibernate-mapping>
</code>
  * Loading of lazy entities can be done via ''org.hibernate.Hibernate#initialize(Object)''.
  * The difference between ''Session.save()'' and ''Session.persist()'' is covered [[https://forum.hibernate.org/viewtopic.php?t=951275#p2325758|here]].
  * [[https://forum.hibernate.org/viewtopic.php?f=9&t=971056#p2421672|equals() and hashCode() for PersistentBag and PersistentIdentifierBag]].