Fix ALF-2591: FixNameCrcValuesPatch needs to use Savepoint (PostgreSQL)

- PostgreSQL doesn't have automatic recovery after constraint violations
 - Added in calls to new ControlDAO's createSavepoint


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@20001 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

config/alfresco/patch/patch-services-context.xml

@@ -1978,7 +1978,6 @@
                 <ref bean="patch.InvalidNameEnding" />
             </list>
         </property>
-        <!-- helper beans -->
         <property name="sessionFactory">
             <ref bean="sessionFactory" />
         </property>
@@ -1988,6 +1987,9 @@
         <property name="qnameDAO">
             <ref bean="qnameDAO" />
         </property>
+        <property name="controlDAO">
+            <ref bean="controlDAO" />
+        </property>
         <property name="ruleService">
             <ref bean="ruleService" />
         </property>

source/java/org/alfresco/repo/admin/patch/impl/FixNameCrcValuesPatch.java

@@ -24,6 +24,7 @@ import java.io.RandomAccessFile;
 import java.io.UnsupportedEncodingException;
 import java.nio.ByteBuffer;
 import java.nio.channels.FileChannel;
+import java.sql.Savepoint;
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;
@@ -36,6 +37,7 @@ import org.alfresco.repo.batch.BatchProcessor;
 import org.alfresco.repo.batch.BatchProcessor.BatchProcessWorker;
 import org.alfresco.repo.domain.ChildAssoc;
 import org.alfresco.repo.domain.Node;
+import org.alfresco.repo.domain.control.ControlDAO;
 import org.alfresco.repo.domain.hibernate.ChildAssocImpl;
 import org.alfresco.repo.domain.qname.QNameDAO;
 import org.alfresco.repo.node.db.NodeDaoService;
@@ -73,6 +75,7 @@ public class FixNameCrcValuesPatch extends AbstractPatch
     private SessionFactory sessionFactory;
     private NodeDaoService nodeDaoService;
     private QNameDAO qnameDAO;
+    private ControlDAO controlDAO;
     private RuleService ruleService;
     
     private static Log progress_logger = LogFactory.getLog(PatchExecuter.class);
@@ -102,6 +105,14 @@ public class FixNameCrcValuesPatch extends AbstractPatch
         this.qnameDAO = qnameDAO;
     }
 
+    /**
+     * @param controlDAO        used to create Savepoints
+     */
+    public void setControlDAO(ControlDAO controlDAO)
+    {
+        this.controlDAO = controlDAO;
+    }
+
     /**
      * @param ruleService the rule service
      */
@@ -236,12 +247,16 @@ public class FixNameCrcValuesPatch extends AbstractPatch
                     assoc.setChildNodeNameCrc(childCrc);
                     assoc.setQnameCrc(qnameCrc);
                     // Persist
+                    Savepoint savepoint = controlDAO.createSavepoint("FixNameCrcValuesPatch");
                     try
                     {
                         getSession().flush();
+                        controlDAO.releaseSavepoint(savepoint);
                     }
                     catch (Throwable e)
                     {
+                        controlDAO.releaseSavepoint(savepoint);
+                        
                         String msg = I18NUtil.getMessage(MSG_UNABLE_TO_CHANGE, childNode.getId(), childName, oldChildCrc,
                                 childCrc, qname, oldQNameCrc, qnameCrc, e.getMessage());
                         // We just log this and add details to the message file