diff geo-backend/src/main/java/de/intevation/gnv/geobackend/base/query/QueryExecutorFactory.java @ 132:5a583cff97ea

Implementation of the Datainfrastructure for fetching Data from different DataStores. geo-backend/trunk@12 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Tim Englich <tim.englich@intevation.de>
date Fri, 04 Sep 2009 08:11:30 +0000
parents
children 3cbf11c67fdc
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/geo-backend/src/main/java/de/intevation/gnv/geobackend/base/query/QueryExecutorFactory.java	Fri Sep 04 08:11:30 2009 +0000
@@ -0,0 +1,51 @@
+/**
+ *
+ */
+package de.intevation.gnv.geobackend.base.query;
+
+import org.apache.log4j.Logger;
+
+/**
+ * @author Tim Englich <tim.englich@intevation.de>
+ *
+ */
+public class QueryExecutorFactory {
+    
+    /**
+     * the logger, used to log exceptions and additonaly information
+     */
+    private static Logger log = Logger.getLogger(QueryExecutorFactory.class);
+
+    
+    /**
+     * The singleton Instance of this Factory.
+     */
+    private static QueryExecutorFactory instance = null;
+
+    /**
+     * Basic-Constructor of this Class
+     */
+    private QueryExecutorFactory() {
+        super();
+    }
+
+    /**
+     * This Method provides an singleton Instance of this Class.
+     * @return an singleton Instance of this Class
+     */
+    public static QueryExecutorFactory getInstance(){
+        if (instance == null){
+            instance = new QueryExecutorFactory();
+        }
+        return instance;
+    }
+    
+    
+    /**
+     * Getting the QueryExecutor
+     * @return the QueryExecutor
+     */
+    public QueryExecutor getQueryExecutor(){
+        return new DefaultQueryExceutor();
+    }
+}

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