Mercurial > dive4elements > gnv-client
annotate geo-backend/src/main/java/de/intevation/gnv/geobackend/base/query/container/QueryContainerFactory.java @ 891:a277ebde74e4
Added more JavaDoc
geo-backend/trunk@917 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Tim Englich <tim.englich@intevation.de> |
---|---|
date | Tue, 13 Apr 2010 11:28:47 +0000 |
parents | b757def3ff55 |
children | 8a652a451bc6 |
rev | line source |
---|---|
132
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
1 package de.intevation.gnv.geobackend.base.query.container; |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
2 |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
3 import java.util.Properties; |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
4 |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
5 import org.apache.log4j.Logger; |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
6 |
891 | 7 import de.intevation.gnv.geobackend.base.query.container.exception.QueryContainerException; |
8 | |
132
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
9 /** |
891 | 10 * Factoryclass to provide a singleton-Instance of an |
11 * <code>QueryContainer</code>-Object | |
887
b757def3ff55
Bring @author javadoc tags in form '@author <a href="john.doe@example.com">John Doe</a>'
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
886
diff
changeset
|
12 * @author <a href="mailto:tim.englich@intevation.de">Tim Englich</a> |
132
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
13 */ |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
14 public class QueryContainerFactory { |
885
1c3efbd2fc5a
Removes trailing whitespace.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
541
diff
changeset
|
15 |
132
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
16 /** |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
17 * 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>
parents:
diff
changeset
|
18 */ |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
19 private static Logger log = Logger.getLogger(QueryContainerFactory.class); |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
20 |
885
1c3efbd2fc5a
Removes trailing whitespace.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
541
diff
changeset
|
21 |
132
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
22 /** |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
23 * The singleton Instance of this Factory. |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
24 */ |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
25 private static QueryContainerFactory instance = null; |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
26 |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
27 /** |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
28 * The ConnectionPool providing the Connections to the DatabaseBackends |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
29 */ |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
30 private QueryContainer queryContainer = null; |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
31 |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
32 /** |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
33 * Basic-Constructor of this Class |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
34 */ |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
35 private QueryContainerFactory() { |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
36 super(); |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
37 } |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
38 |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
39 /** |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
40 * 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>
parents:
diff
changeset
|
41 * @return an singleton Instance of this Class |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
42 */ |
541
3cbf11c67fdc
Experimental caching of SQL results via Ehache
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
132
diff
changeset
|
43 public static synchronized QueryContainerFactory getInstance(){ |
132
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
44 if (instance == null){ |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
45 instance = new QueryContainerFactory(); |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
46 } |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
47 return instance; |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
48 } |
885
1c3efbd2fc5a
Removes trailing whitespace.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
541
diff
changeset
|
49 |
1c3efbd2fc5a
Removes trailing whitespace.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
541
diff
changeset
|
50 |
132
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
51 /** |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
52 * Getting the QueryContainer |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
53 * @return the QueryContainer |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
54 */ |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
55 public QueryContainer getQueryContainer(){ |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
56 return this.queryContainer; |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
57 } |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
58 |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
59 /** |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
60 * Initializes the QueryContainer. |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
61 * Should only be called once on system startup |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
62 * @param properties the Properties for the Individual Configuration of the QueryContainerbb |
885
1c3efbd2fc5a
Removes trailing whitespace.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
541
diff
changeset
|
63 * @throws QueryContainerException |
132
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
64 */ |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
65 public synchronized void initializeQueryContainer(Properties properties) throws QueryContainerException{ |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
66 log.debug("ConnectionPoolFactory.initializeConnectionPool"); |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
67 if (this.queryContainer == null){ |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
68 this.queryContainer = new DefaultQueryContainer(); |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
69 this.queryContainer.initialize(properties); |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
70 }else{ |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
71 log.warn("ConnectionPool already initialized"); |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
72 } |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
73 } |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
74 |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
75 /** |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
76 * Checks if the QueryContainer has already been initialized. |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
77 * @return true if the QueryContainer is initialized. |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
78 */ |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
79 public boolean isInitialized(){ |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
80 return this.queryContainer != null; |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
81 } |
5a583cff97ea
Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff
changeset
|
82 } |