#53 Implemented SQLite product data persistence + tests

src/main/java/de/rwu/easydrop/api/client/DataSourceFactory.java

@@ -2,6 +2,8 @@ package de.rwu.easydrop.api.client;
 
 import javax.naming.ConfigurationException;
 
+import de.rwu.easydrop.data.connector.AbstractProductPersistence;
+import de.rwu.easydrop.exception.PersistenceException;
 import de.rwu.easydrop.util.Config;
 
 /**
@@ -15,6 +17,17 @@ public class DataSourceFactory {
      * The data source config.
      */
     private Config config;
+    /**
+     * Persistence interface.
+     */
+    private AbstractProductPersistence persistence = null;
+
+    /**
+     * @param newPersistence the persistence to set
+     */
+    public void setPersistence(final AbstractProductPersistence newPersistence) {
+        this.persistence = newPersistence;
+    }
 
     /**
      * @param newConfig the config to set
@@ -52,4 +65,17 @@ public class DataSourceFactory {
         String apiKey = config.getProperty("EBAY_API_KEY");
         return new EbayItemDataSource(apiUrl, apiKey);
     }
+
+    /**
+     * Creates a persistence data source.
+     *
+     * @return ProductPersistenceInterface
+     */
+    public AbstractProductPersistence createProductPersistenceDataSource() {
+        if (persistence == null) {
+            throw new PersistenceException("Persistence is not set");
+        }
+
+        return persistence;
+    }
 }