IDEMPIERE-1545 There is no OSGi interface for a BankStatementLoader

org.adempiere.base/src/org/adempiere/base/Core.java

@@ -29,6 +29,7 @@ import org.adempiere.model.IAddressValidation;
 import org.adempiere.model.IShipmentProcessor;
 import org.adempiere.model.ITaxProvider;
 import org.adempiere.model.MShipperFacade;
+import org.compiere.impexp.BankStatementLoaderInterface;
 import org.compiere.model.MAddressValidation;
 import org.compiere.model.MBankAccountProcessor;
 import org.compiere.model.MPaymentProcessor;
@@ -174,6 +175,40 @@ public class Core {
 		return myProcessor;
 	}
 	
+	/**
+	 * get BankStatementLoader instance
+	 * 
+	 * @param className
+	 * @return instance of the BankStatementLoaderInterface or null
+	 */
+	public static BankStatementLoaderInterface getBankStatementLoader(String className){
+		if (className == null || className.length() == 0) {
+			s_log.log(Level.SEVERE, "No BankStatementLoaderInterface class name");
+			return null;
+		}
+
+		BankStatementLoaderInterface myBankStatementLoader = null;
+		
+		List<IBankStatementLoaderFactory> factoryList = 
+				Service.locator().list(IBankStatementLoaderFactory.class).getServices();
+		if (factoryList != null) {
+			for(IBankStatementLoaderFactory factory : factoryList) {
+				BankStatementLoaderInterface loader = factory.newBankStatementLoaderInstance(className);
+				if (loader != null) {
+					myBankStatementLoader = loader;
+					break;
+				}
+			}
+		}
+		
+		if (myBankStatementLoader == null) {
+			s_log.log(Level.SEVERE, "Not found in service/extension registry and classpath");
+			return null;
+		}
+		
+		return myBankStatementLoader;
+	}
+	
 	/**
 	 * 
 	 * @param sf

org.adempiere.base/src/org/adempiere/base/IBankStatementLoaderFactory.java

@@ -0,0 +1,40 @@
+/******************************************************************************
+ * Copyright (C) 2013 Thomas Bayen                                            *
+ * Copyright (C) 2013 Jakob Bayen KG             							  *
+ * This program is free software; you can redistribute it and/or modify it    *
+ * under the terms version 2 of the GNU General Public License as published   *
+ * by the Free Software Foundation. This program 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 this program; if not, write to the Free Software Foundation, Inc.,    *
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.                     *
+ *****************************************************************************/
+package org.adempiere.base;
+
+import org.compiere.impexp.BankStatementLoaderInterface;
+
+/**
+ * Factory Interface for plugins to connect to the iDempiere core and provide a
+ * way to load BankStatement lines. This can be used e.g. by a HBCI importer
+ * plugin or just by a plugin to connect via csv or a webservice (or whatever)
+ * to your bank.
+ * 
+ * @author tbayen
+ */
+public interface IBankStatementLoaderFactory {
+
+	/**
+	 * This class will be implemented in OSGi plugins. Every plugin that
+	 * provides this service may or may not provide an BankStatementLoader
+	 * depending on the given classname. The classname can be given by the user
+	 * in the "Bank" window in the "Bank Satement Loader" tab. By convention
+	 * this classname is the fully qualified classname of the Loader class you
+	 * want to use.
+	 * 
+	 * @param className
+	 * @return BankStatementLoader instance
+	 */
+	public BankStatementLoaderInterface newBankStatementLoaderInstance(String className);
+}

org.adempiere.base/src/org/compiere/model/MBankStatementLoader.java

@@ -20,6 +20,7 @@ import java.sql.ResultSet;
 import java.util.Properties;
 import java.util.logging.Level;
 
+import org.adempiere.base.Core;
 import org.compiere.impexp.BankStatementLoaderInterface;
  
  
@@ -118,8 +119,13 @@ import org.compiere.impexp.BankStatementLoaderInterface;
 		try
 		{
 			if (log.isLoggable(Level.INFO)) log.info( "MBankStatementLoader Class Name=" + getStmtLoaderClass());
-			Class<?> bsrClass = Class.forName(getStmtLoaderClass());
-			m_loader = (BankStatementLoaderInterface) bsrClass.newInstance();
+			// load the BankStatementLoader class via OSGi Service definition from a plugin
+			m_loader = Core.getBankStatementLoader(getStmtLoaderClass());
+			if(m_loader==null){
+				// if no OSGi plugin is found try the legacy way (in my own classpath)
+				Class<?> bsrClass = Class.forName(getStmtLoaderClass());
+				m_loader = (BankStatementLoaderInterface) bsrClass.newInstance();
+			}
 		}
 		catch(Exception e)
 		{