Mercurial > dive4elements > gnv-client

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

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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
rev   line source
132
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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1 /**
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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2 *
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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3 */
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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4 package de.intevation.gnv.geobackend.base.query;
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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5
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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6 import org.apache.log4j.Logger;
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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7
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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8 /**
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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9 * @author Tim Englich <tim.englich@intevation.de>
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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10 *
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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11 */
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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12 public class QueryExecutorFactory {
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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13
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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14 /**
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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15 * the logger, used to log exceptions and additonaly information
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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16 */
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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17 private static Logger log = Logger.getLogger(QueryExecutorFactory.class);
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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18
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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19
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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20 /**
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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21 * The singleton Instance of this Factory.
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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22 */
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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23 private static QueryExecutorFactory instance = null;
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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24
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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25 /**
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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26 * Basic-Constructor of this Class
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Tim Englich <tim.englich@intevation.de>
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27 */
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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28 private QueryExecutorFactory() {
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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29 super();
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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30 }
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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31
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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32 /**
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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33 * This Method provides an singleton Instance of this Class.
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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34 * @return an singleton Instance of this Class
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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35 */
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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36 public static QueryExecutorFactory getInstance(){
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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37 if (instance == null){
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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38 instance = new QueryExecutorFactory();
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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39 }
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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40 return instance;
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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41 }
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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42
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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43
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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44 /**
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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45 * Getting the QueryExecutor
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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46 * @return the QueryExecutor
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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47 */
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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48 public QueryExecutor getQueryExecutor(){
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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49 return new DefaultQueryExceutor();
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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50 }
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
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51 }
http://dive4elements.wald.intevation.org