New working version after Victoria trip - fix a typo

src/main/java/it/inaf/oats/vospacebackend/implementation/VOSpaceBackendImplFactory.java

+/**_____________________________________________________________________________
+ *
+ *                                 OATS - INAF
+ *  Osservatorio Astronomico di Tireste - Istituto Nazionale di Astrofisica
+ *  Astronomical Observatory of Trieste - National Institute for Astrophysics
+ * ____________________________________________________________________________
+ *
+ * Copyright (C) 20016  Istituto Nazionale di Astrofisica
+ * 
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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., 
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ * _____________________________________________________________________________
+ **/
+
+package it.inaf.oats.vospacebackend.implementation;
+
+import org.apache.log4j.Logger;
+import it.inaf.oats.vospacebackend.exceptions.ExceptionMessage;
+import it.inaf.oats.vospacebackend.exceptions.VOSpaceBackendException;
+import it.inaf.oats.vospacebackend.utils.ConfigReader;
+
+import java.text.MessageFormat;
+
+public class VOSpaceBackendImplFactory {
+    
+    private static final String CONFIG_FILE_NAME = "VOSpace.properties";
+    private static final Logger log = Logger.getLogger(VOSpaceBackendImplFactory.class);
+    private static String VOSpaceBackImplName = new String();
+    
+    public VOSpaceBackendImplFactory() throws VOSpaceBackendException {
+        
+        ConfigReader myConf = null;
+        try {
+            myConf = new ConfigReader(CONFIG_FILE_NAME);  
+        } catch (Exception e) {
+            ExceptionMessage exMsg = new ExceptionMessage();
+            log.debug(MessageFormat.format(exMsg.getMessage("UNABLE_TO_READ_PROPERTIES"), CONFIG_FILE_NAME));
+            throw new VOSpaceBackendException(                   
+               MessageFormat.format(exMsg.getMessage("UNABLE_TO_READ_PROPERTIES"), CONFIG_FILE_NAME));
+            
+        }
+        
+        try {       
+            this.VOSpaceBackImplName = myConf.getProperty("it.inaf.oats.vospacebackend.implementation.VOSpaceBackendImpl");     
+        } catch (Exception e) {     
+            ExceptionMessage exMsg = new ExceptionMessage();
+            log.debug(MessageFormat.format(
+                       exMsg.getMessage("PROPERTY_NOT_FOUND"), 
+                                        "it.inaf.oats.vospacebackend.implementation.VOSpaceBackendImpl", 
+                                        CONFIG_FILE_NAME));
+            throw new VOSpaceBackendException(
+               MessageFormat.format(
+                       exMsg.getMessage("PROPERTY_NOT_FOUND"), 
+                                        "it.inaf.oats.vospacebackend.implementation.VOSpaceBackendImpl", 
+                                        CONFIG_FILE_NAME));            
+        }
+       
+    }
+    
+    public VOSpaceBackend getVOSpaceBackImpl() throws VOSpaceBackendException {
+        
+        log.debug("Try to get object: " + this.VOSpaceBackImplName);
+        return (VOSpaceBackend)this.buildObject(this.VOSpaceBackImplName);
+        
+    }
+    
+    private Object buildObject(String myBackendImpl) throws VOSpaceBackendException {
+        
+        Object result = null;
+        try {
+            //note that, with this style, the implementation needs to have a
+            //no-argument constructor!
+            Class implClass = Class.forName(myBackendImpl);
+            result = implClass.newInstance();
+        } catch (ClassNotFoundException ex) {
+            log.debug("CLASS_NOT_FOUND");
+            ExceptionMessage exMsg = new ExceptionMessage();
+            throw new VOSpaceBackendException(MessageFormat.format(exMsg.getMessage("CLASS_NOT_FOUND"), myBackendImpl));
+        } catch (InstantiationException ex) {
+            log.debug("UNABLE_TO_INSTANTIATE");
+            ExceptionMessage exMsg = new ExceptionMessage();
+            throw new VOSpaceBackendException(MessageFormat.format(exMsg.getMessage("UNABLE_TO_INSTANTIATE"), myBackendImpl));
+        } catch (IllegalAccessException ex) {
+            log.debug("UNABLE_TO_ACCESS");
+            ExceptionMessage exMsg = new ExceptionMessage();
+            throw new VOSpaceBackendException(MessageFormat.format(exMsg.getMessage("UNABLE_TO_ACCESS"), myBackendImpl));
+        }
+        return result;
+        
+    }    
+    
+}