Hibernate parts of AVM now based on Spring PlatformTransactionManager

abstraction.  Configurations to match.


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/BRANCHES/WCM-DEV2/root@3286 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/avm/AVMServiceImpl.java

@@ -956,7 +956,7 @@ public class AVMServiceImpl implements AVMService
             }
         }
         HTxnCallback doit = new HTxnCallback();
-        fTransaction.perform(doit, false);
+        fTransaction.perform(doit, true);
     }
 
     /**

source/java/org/alfresco/repo/avm/OrphanReaper.java

@@ -261,9 +261,11 @@ public class OrphanReaper implements Runnable
                             delete.setEntity("parent", node);
                             delete.executeUpdate();
                         } 
+                        session.delete(node);
                     }
                     else if (node instanceof PlainFileNode)
                     {
+                        session.delete(node);
                         // FileContent should be purged if nobody else references it.
                         FileContent content = ((PlainFileNode)node).getContent();
                         if (content.getRefCount() == 1)
@@ -272,7 +274,10 @@ public class OrphanReaper implements Runnable
                             session.delete(content);
                         }
                     }
-                    session.delete(node);
+                    else
+                    {
+                        session.delete(node);
+                    }
                 }
             }
         }

source/java/org/alfresco/repo/avm/hibernate/HibernateCallbackWrapper.java

@@ -0,0 +1,42 @@
+/**
+ * 
+ */
+package org.alfresco.repo.avm.hibernate;
+
+import java.sql.SQLException;
+
+import org.hibernate.HibernateException;
+import org.hibernate.Session;
+import org.springframework.orm.hibernate3.HibernateCallback;
+
+/**
+ * This is a wrapper around HibernateTxnCallback implementation.
+ * @author britt
+ */
+public class HibernateCallbackWrapper implements HibernateCallback
+{
+    /**
+     * The HibernateTxnCallback to execute.
+     */
+    private HibernateTxnCallback fCallback;
+    
+    /**
+     * Make one up.
+     * @param callback
+     */
+    public HibernateCallbackWrapper(HibernateTxnCallback callback)
+    {
+        fCallback = callback;
+    }
+    
+    /**
+     * Call the HibernateTxnCallback internally.
+     * @param session The Hibernate Session.
+     */
+    public Object doInHibernate(Session session) throws HibernateException,
+            SQLException
+    {
+        fCallback.perform(session);
+        return null;
+    }
+}

source/java/org/alfresco/repo/avm/hibernate/HibernateTxn.java

@@ -21,15 +21,14 @@ import java.util.Random;
 
 import org.alfresco.repo.avm.AVMException;
 import org.alfresco.repo.avm.AVMNotFoundException;
-import org.hibernate.HibernateException;
-import org.hibernate.JDBCException;
-import org.hibernate.Session;
-import org.hibernate.SessionFactory;
-import org.hibernate.Transaction;
 import org.springframework.dao.DataRetrievalFailureException;
 import org.springframework.dao.DeadlockLoserDataAccessException;
 import org.springframework.dao.OptimisticLockingFailureException;
 import org.springframework.orm.hibernate3.HibernateTemplate;
+import org.springframework.transaction.PlatformTransactionManager;
+import org.springframework.transaction.TransactionDefinition;
+import org.springframework.transaction.TransactionException;
+import org.springframework.transaction.TransactionStatus;
 
 /**
  * Helper for DAOs.
@@ -38,9 +37,19 @@ import org.springframework.orm.hibernate3.HibernateTemplate;
 public class HibernateTxn extends HibernateTemplate
 {
     /**
-     * The SessionFactory.
+     * The transaction manager.
      */
-    private SessionFactory fSessionFactory;
+    private PlatformTransactionManager fTransactionManager;
+    
+    /**
+     * The read transaction definition.
+     */
+    private TransactionDefinition fReadDefinition;
+    
+    /**
+     * The write transaction definition.
+     */
+    private TransactionDefinition fWriteDefinition;
     
     /**
      * The random number generator for inter-retry sleep.
@@ -56,16 +65,6 @@ public class HibernateTxn extends HibernateTemplate
         fRandom = new Random();
     }
 
-    /**
-     * Set the Hibernate Session factory.
-     * @param factory
-     */
-    public void setSessionFactory(SessionFactory factory)
-    {
-        super.setSessionFactory(factory);
-        fSessionFactory = factory;
-    }
-    
     /**
      * Perform a set of operations under a single Hibernate transaction.
      * Keep trying if the operation fails because of a concurrency issue.
@@ -74,44 +73,34 @@ public class HibernateTxn extends HibernateTemplate
      */
     public void perform(HibernateTxnCallback callback, boolean write)
     {
-        Session sess = null;
-        Transaction txn = null;
         while (true)
         {
+            TransactionStatus status = null;
             try
             {
-                sess = fSessionFactory.openSession();
-                txn = sess.beginTransaction();
-                callback.perform(sess);
-                txn.commit();
+                status = 
+                    fTransactionManager.getTransaction(write ? fWriteDefinition : fReadDefinition);
+                execute(new HibernateCallbackWrapper(callback));
+                try
+                {
+                    fTransactionManager.commit(status);
+                }
+                catch (TransactionException te)
+                {
+                    throw new AVMException("Transaction Exception.", te);
+                }
                 return;
             }
             catch (Throwable t)
             {
-                // TODO Add appropriate logging.
-                if (txn != null)
+                if (!status.isCompleted())
                 {
-                    try
-                    {
-                        txn.rollback();
-                    }
-                    catch (HibernateException he)
-                    {
-                        // Do nothing.
-                    }
-                }
-                // Translate the exception.
-                if (t instanceof JDBCException)
-                {
-                    t = convertJdbcAccessException((JDBCException)t);
-                }
-                else if (t instanceof HibernateException)
-                {
-                    t = convertHibernateAccessException((HibernateException)t);
+                    fTransactionManager.rollback(status);
                 }
                 // If we've lost a race or we've deadlocked, retry.
                 if (t instanceof DeadlockLoserDataAccessException)
                 {
+                    System.err.println("Deadlock.");
                     try
                     {
                         long interval;
@@ -120,7 +109,6 @@ public class HibernateTxn extends HibernateTemplate
                             interval = fRandom.nextInt(1000);
                         }
                         Thread.sleep(interval);
-                        continue;
                     }
                     catch (InterruptedException ie)
                     {
@@ -130,6 +118,7 @@ public class HibernateTxn extends HibernateTemplate
                 }
                 if (t instanceof OptimisticLockingFailureException)
                 {
+                    System.err.println("Lost Race.");
                     continue;
                 }
                 if (t instanceof AVMException)
@@ -138,24 +127,38 @@ public class HibernateTxn extends HibernateTemplate
                 }
                 if (t instanceof DataRetrievalFailureException)
                 {
+                    System.err.println("Data Retrieval Error.");
                     throw new AVMNotFoundException("Object not found.", t);
                 }
                 throw new AVMException("Unrecoverable error.", t);
             }
-            finally
-            {
-                if (sess != null)
-                {
-                    try
-                    {
-                        sess.close();
-                    }
-                    catch (HibernateException he)
-                    {
-                        // Do nothing.
-                    }
-                }
-            }
         }
     }
+    
+    /**
+     * Set the transaction manager we are operating under.
+     * @param manager
+     */
+    public void setTransactionManager(PlatformTransactionManager manager)
+    {
+        fTransactionManager = manager;
+    }
+    
+    /**
+     * Set the read Transaction Definition.
+     * @param def
+     */
+    public void setReadTransactionDefinition(TransactionDefinition def)
+    {
+        fReadDefinition = def;
+    }
+    
+    /**
+     * Set the write Transaction Definition.
+     * @param def
+     */
+    public void setWriteTransactionDefinition(TransactionDefinition def)
+    {
+        fWriteDefinition = def;
+    }
 }