Reconnect issue:Persist the connection meta info in SQLite database;Delete connection info from SQLite database when call disconnect.

Change-Id: I4d530abb144d33280cf44f186b0223b0dee93d47
Signed-off-by: tzihan <zhtang@cn.ibm.com>

Author: tzihan

org.eclipse.paho.android.service/org.eclipse.paho.android.service/src/org/eclipse/paho/android/service/ConnectionPersistenceException.java

@@ -0,0 +1,41 @@
+/*******************************************************************************
+ * Copyright (c) 2014 IBM Corp.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * and Eclipse Distribution License v1.0 which accompany this distribution. 
+ *
+ * The Eclipse Public License is available at 
+ *    http://www.eclipse.org/legal/epl-v10.html
+ * and the Eclipse Distribution License is available at 
+ *   http://www.eclipse.org/org/documents/edl-v10.php.
+ */
+
+package org.eclipse.paho.android.service;
+
+/**
+ * Persistence Exception, defines an error with persisting a
+ * {@link ModelConnectionPersistence} fails. Example operations are
+ * {@link DatabaseConnectionPersistence#persistConnection(ModelConnectionPersistence)}
+ * and
+ * {@link DatabaseConnectionPersistence#restoreConnections(android.content.Context)}
+ * ; these operations throw this exception to indicate unexpected results
+ * occurred when performing actions on the database.
+ * 
+ */
+public class ConnectionPersistenceException extends Exception {
+
+	/**
+	 * Creates a persistence exception with the given error message
+	 * 
+	 * @param message
+	 *            The error message to display
+	 */
+	public ConnectionPersistenceException(String message) {
+		super(message);
+	}
+
+	/** Serialisation ID **/
+	private static final long serialVersionUID = 5326458803268855071L;
+
+}