Exemple : fichiers XML ObjectGrid Hibernate

Les fichiers XML Hibernate ObjectGrid doivent être créés à partir de la configuration de l'unité de persistance.

Fichier persistence.xml

Voici à titre d'exemple un fichier persistence.xml représentant la configuration d'une unité de persistance :

<persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  version="1.0">
  <persistence-unit name="AnnuityGrid">
    <provider>org.hibernate.ejb.HibernatePersistence</provider>

    <class>com.ibm.wssvt.acme.annuity.common.bean.jpa.AnnuityPersistebleObject</class>
    <class>com.ibm.wssvt.acme.annuity.common.bean.jpa.Annuity</class>
    <class>com.ibm.wssvt.acme.annuity.common.bean.jpa.FixedAnnuity</class>
    <class>com.ibm.wssvt.acme.annuity.common.bean.jpa.EquityAnnuity</class>
    <class>com.ibm.wssvt.acme.annuity.common.bean.jpa.Payout</class>
    <class>com.ibm.wssvt.acme.annuity.common.bean.jpa.Rider</class>
    <class>com.ibm.wssvt.acme.annuity.common.bean.jpa.Payor</class>
    <class>com.ibm.wssvt.acme.annuity.common.bean.jpa.Person</class>
    <class>com.ibm.wssvt.acme.annuity.common.bean.jpa.AnnuityHolder</class>
    <class>com.ibm.wssvt.acme.annuity.common.bean.jpa.Contact</class>
    <class>com.ibm.wssvt.acme.annuity.common.bean.jpa.Address</class>

    <exclude-unlisted-classes>true</exclude-unlisted-classes>

    <properties>
      <property name="hibernate.show_sql" value="false" />
      <property name="hibernate.connection.url" value="jdbc:db2:Annuity" />
      <property name="hibernate.connection.driver_class" value="com.ibm.db2.jcc.DB2Driver" />
      <property name="hibernate.default_schema" value="EJB30" />

      <!-- Cache -->
      <property name="hibernate.cache.provider_class"
        value="com.ibm.websphere.objectgrid.hibernate.cache.ObjectGridHibernateCacheProvider" />
      <property name="hibernate.cache.use_query_cache" value="true" />
      <property name="objectgrid.configuration" value="ObjectGridType=EMBEDDED,
               ObjectGridName=Annuity, MaxNumberOfReplicas=4" />
    </properties>
  </persistence-unit>

</persistence>

Fichier hibernate-objectGridDeployment.xml

Utilisez le fichier hibernate-objectGridDeployment.xml pour éventuellement personnaliser la stratégie de déploiement. Si vous fournissez ce fichier dans le répertoire META-INF/hibernate-objectGridDeployment.xml, la stratégie de déploiement par défaut est remplacée par la configuration dans ce fichier.
<?xml version="1.0" encoding="UTF-8"?>
<deploymentPolicy xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://ibm.com/ws/objectgrid/deploymentPolicy ../deploymentPolicy.xsd"
  xmlns="http://ibm.com/ws/objectgrid/deploymentPolicy">
  <objectgridDeployment objectgridName="Annuity">
    <mapSet name="MAPSET_Annuity" numberOfPartitions="1" numInitialContainers="1" minSyncReplicas="0"
           maxSyncReplicas="4" maxAsyncReplicas="0" replicaReadEnabled="true">
      <map ref="com.ibm.wssvt.acme.annuity.common.bean.jpa.Annuity" />
      <map ref="defaultCacheMap" />
      <map ref="com.ibm.wssvt.acme.annuity.common.bean.jpa.Payor" />
      <map ref="com.ibm.wssvt.acme.annuity.common.bean.jpa.Contact" />
      <map ref="com.ibm.wssvt.acme.annuity.common.bean.jpa.Person" />
      <map ref="com.ibm.wssvt.acme.annuity.common.bean.jpa.Rider" />
      <map ref="com.ibm.wssvt.acme.annuity.common.bean.jpa.Payout" />
      <map ref="org.hibernate.cache.UpdateTimestampsCache" />
      <map ref="org.hibernate.cache.StandardQueryCache" />
    </mapSet>
  </objectgridDeployment>
</deploymentPolicy>

Fichier hibernate-objectGrid.xml

Si vous n'utilisez pas Hibernate avec Java Persistence API (JPA), utilisez l'exemple suivant hibernate-objectGrid.xml pour créer votre configuration Hibernate :
<?xml version="1.0" encoding="UTF-8"?>
<objectGridConfig xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://ibm.com/ws/objectgrid/config ../objectGrid.xsd"
  xmlns="http://ibm.com/ws/objectgrid/config">
  <objectGrids>
    <objectGrid name="Annuity">
      <backingMap name="com.ibm.wssvt.acme.annuity.common.bean.jpa.Annuity" readOnly="false" copyKey="false"
                  lockStrategy="NONE" copyMode="NO_COPY" evictionTriggers="MEMORY_USAGE_THRESHOLD"
                  pluginCollectionRef="com.ibm.wssvt.acme.annuity.common.bean.jpa.Annuity" />
      <backingMap name="defaultCacheMap" readOnly="false" copyKey="false"
                  lockStrategy="NONE" copyMode="NO_COPY" evictionTriggers="MEMORY_USAGE_THRESHOLD"
                  pluginCollectionRef="defaultCacheMap" />
      <backingMap name="com.ibm.wssvt.acme.annuity.common.bean.jpa.Payor" readOnly="false" copyKey="false"
                  lockStrategy="NONE" copyMode="NO_COPY" evictionTriggers="MEMORY_USAGE_THRESHOLD"
                  pluginCollectionRef="com.ibm.wssvt.acme.annuity.common.bean.jpa.Payor" />
      <backingMap name="com.ibm.wssvt.acme.annuity.common.bean.jpa.Contact" readOnly="false" copyKey="false"
                  lockStrategy="NONE" copyMode="NO_COPY" evictionTriggers="MEMORY_USAGE_THRESHOLD"
                  pluginCollectionRef="com.ibm.wssvt.acme.annuity.common.bean.jpa.Contact" />
      <backingMap name="com.ibm.wssvt.acme.annuity.common.bean.jpa.Person" readOnly="false" copyKey="false"
                  lockStrategy="NONE" copyMode="NO_COPY" evictionTriggers="MEMORY_USAGE_THRESHOLD"
                  pluginCollectionRef="com.ibm.wssvt.acme.annuity.common.bean.jpa.Person" />
      <backingMap name="com.ibm.wssvt.acme.annuity.common.bean.jpa.Rider" readOnly="false" copyKey="false"
                  lockStrategy="NONE" copyMode="NO_COPY" evictionTriggers="MEMORY_USAGE_THRESHOLD"
                  pluginCollectionRef="com.ibm.wssvt.acme.annuity.common.bean.jpa.Rider" />
      <backingMap name="com.ibm.wssvt.acme.annuity.common.bean.jpa.Payout" readOnly="false" copyKey="false"
                  lockStrategy="NONE" copyMode="NO_COPY" evictionTriggers="MEMORY_USAGE_THRESHOLD"
                  pluginCollectionRef="com.ibm.wssvt.acme.annuity.common.bean.jpa.Payout" />
      <backingMap name="org.hibernate.cache.UpdateTimestampsCache" readOnly="false" copyKey="false"
                  lockStrategy="NONE" copyMode="NO_COPY" evictionTriggers="MEMORY_USAGE_THRESHOLD"
                  pluginCollectionRef="org.hibernate.cache.UpdateTimestampsCache" />
      <backingMap name="org.hibernate.cache.StandardQueryCache" readOnly="false" copyKey="false"
                  lockStrategy="NONE" copyMode="NO_COPY" evictionTriggers="MEMORY_USAGE_THRESHOLD"
                  pluginCollectionRef="org.hibernate.cache.StandardQueryCache" />
    </objectGrid>
  </objectGrids>
  <backingMapPluginCollections>
    <backingMapPluginCollection id="com.ibm.wssvt.acme.annuity.common.bean.jpa.Annuity">
      <bean id="Evictor" className="com.ibm.websphere.objectgrid.plugins.builtins.LRUEvictor" >
      </bean>
    </backingMapPluginCollection>
    <backingMapPluginCollection id="defaultCacheMap">
      <bean id="Evictor" className="com.ibm.websphere.objectgrid.plugins.builtins.LRUEvictor" >
      </bean>
    </backingMapPluginCollection>
    <backingMapPluginCollection id="com.ibm.wssvt.acme.annuity.common.bean.jpa.Payor">
      <bean id="Evictor" className="com.ibm.websphere.objectgrid.plugins.builtins.LRUEvictor" >
      </bean>
    </backingMapPluginCollection>
    <backingMapPluginCollection id="com.ibm.wssvt.acme.annuity.common.bean.jpa.Contact">
      <bean id="Evictor" className="com.ibm.websphere.objectgrid.plugins.builtins.LRUEvictor" >
      </bean>
    </backingMapPluginCollection>
    <backingMapPluginCollection id="com.ibm.wssvt.acme.annuity.common.bean.jpa.Person">
      <bean id="Evictor" className="com.ibm.websphere.objectgrid.plugins.builtins.LRUEvictor" >
      </bean>
    </backingMapPluginCollection>
    <backingMapPluginCollection id="com.ibm.wssvt.acme.annuity.common.bean.jpa.Rider">
      <bean id="Evictor" className="com.ibm.websphere.objectgrid.plugins.builtins.LRUEvictor" >
      </bean>
    </backingMapPluginCollection>
    <backingMapPluginCollection id="com.ibm.wssvt.acme.annuity.common.bean.jpa.Payout">
      <bean id="Evictor" className="com.ibm.websphere.objectgrid.plugins.builtins.LRUEvictor" >
      </bean>
    </backingMapPluginCollection>
    <backingMapPluginCollection id="org.hibernate.cache.UpdateTimestampsCache">
      <bean id="Evictor" className="com.ibm.websphere.objectgrid.plugins.builtins.LRUEvictor" >
      </bean>

    </backingMapPluginCollection>
    <backingMapPluginCollection id="org.hibernate.cache.StandardQueryCache">
      <bean id="Evictor" className="com.ibm.websphere.objectgrid.plugins.builtins.LRUEvictor" >
      </bean>
    </backingMapPluginCollection>
  </backingMapPluginCollections>
</objectGridConfig>
Remarque : Les mappes org.hibernate.cache.UpdateTimestampsCache, org.hibernate.cache.StandardQueryCache et defaultCacheMap sont requises.