Mercurial > dive4elements > gnv-client
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> |
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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(); + } +}