1 files changed, 173 insertions, 0 deletions
diff --git a/java/rasj/odmg/RasTransaction.java b/java/rasj/odmg/RasTransaction.java
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+++ b/java/rasj/odmg/RasTransaction.java
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+/*
+* This file is part of rasdaman community.
+*
+* Rasdaman community is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* Rasdaman community is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with rasdaman community.  If not, see <http://www.gnu.org/licenses/>.
+*
+* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
+rasdaman GmbH.
+*
+* For more information please see <http://www.rasdaman.org>
+* or contact Peter Baumann via <baumann@rasdaman.com>.
+*/
+/** ***********************************************************
+ * <pre>
+ *
+ * PURPOSE: 
+ *
+ *
+ * COMMENTS:
+ *
+ * </pre>
+ *********************************************************** */
+package rasj.odmg;
+
+import org.odmg.*;
+import rasj.*;
+import rasj.global.*;
+import rasj.clientcommhttp.*;
+
+/**
+ * This class implements the ODMG Transaction interface.
+ *
+ * @version 1.0  (07-Apr-2000)
+ *
+ * @author Peter Zoller
+ */
+public class RasTransaction implements Transaction
+{
+    /**
+     * This variable holds a reference to the RasODMGImplementation object which created 
+     * this RasDatabase object
+     */
+    //private RasODMGImplementation rasImplementation=null;
+    private RasImplementationInterface rasImplementation=null;
+    
+    /**
+     * local state keeper whether TA is open;
+     * serves to optimize OQL queries: special method isOpenLocally() does not require server calls
+     */
+    private boolean isOpenTA = false;
+
+    public RasTransaction(RasImplementationInterface imp)
+    {
+      rasImplementation=imp;
+      isOpenTA = false;			// local state keeper, maintained by TA methods
+     }
+
+    /**
+     * Not implemented yet.
+     */
+    public void join()
+    {
+        Debug.talkCritical( "RasTransaction::join: not yet implemented." );
+	throw new NotImplementedException();
+    }
+
+    /**
+     * Not implemented yet.
+     */
+    public void leave()
+    {
+        Debug.talkCritical( "RasTransaction::leave: not yet implemented." );
+	throw new NotImplementedException();
+    }
+
+    /**
+     * Begin a transaction.
+     */
+    public void begin()
+    {
+        rasImplementation.beginTA(); 
+        isOpenTA = true;		// TA is considered open if everything went fine.
+    }
+
+    /**
+     * Returns TRUE if a transaction is currently open.
+     */
+    public boolean isOpen()
+    {
+        boolean result = rasImplementation.isOpenTA();  
+        Debug.talkVerbose( "RasTransaction::isOpen: result=" + result );
+        return result;  
+    }
+
+    /**
+     * Returns TRUE if a transaction is supposed to be open as seen from client side.
+     * This is an optimization to save one server call within query execution,
+     * it is NOT an official interface method.
+     */
+    public boolean isOpenLocally()
+    {
+        boolean result = isOpenTA;
+        Debug.talkVerbose( "RasTransaction::isOpenLocally: result=" + result );
+        return result;
+    }
+
+    /**
+     * Commit a transaction.
+     */
+    public void commit()
+    {
+        isOpenTA = false;		// if commit fails something went wrong, so consider TA closed anyway
+        rasImplementation.commitTA();
+    }
+
+    /**
+     * Abort a transaction.
+     */
+    public void abort()
+    {
+        isOpenTA = false;		// if abort tails something went wrong, so consider TA closed anyway
+        rasImplementation.abortTA();    
+    }
+
+    /**
+     * Not implemented yet.
+     */
+    public void checkpoint()
+    {
+        Debug.talkCritical( "RasTransaction::checkpoint: not yet implemented." );
+	throw new NotImplementedException();
+    }
+
+    /**
+     * Not implemented yet.
+     */
+    public void lock(Object obj, int mode) throws LockNotGrantedException
+    {
+        Debug.talkCritical( "RasTransaction::lock: not yet implemented." );
+	throw new NotImplementedException();
+    }
+
+    /**
+     * Not implemented yet.
+     */
+    public boolean tryLock(Object obj, int mode)
+    {
+        Debug.talkCritical( "RasTransaction::tryLock: not yet implemented." );
+	throw new NotImplementedException();
+    }
+
+    /**
+     * Returns the errorStatus.
+     */
+
+    public String getErrorStatus()
+    {
+	String result = rasImplementation.getErrorStatus();
+        Debug.talkSparse( "RasTransaction::getErrorStatus: status=" + result );
+	return result;
+    }
+
+} // RasTransaction