Mercurial > dive4elements > gnv-client

annotate geo-backend/src/main/java/de/intevation/gnv/geobackend/base/query/QueryExecutor.java @ 541:3cbf11c67fdc

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Experimental caching of SQL results via Ehache geo-backend/trunk@462 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Fri, 18 Dec 2009 16:13:52 +0000
parents 5a583cff97ea
children 8b442223741c
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 /**
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 */
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
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>
parents:
diff changeset
5
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
6 import java.util.Collection;
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
7
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
8 import de.intevation.gnv.geobackend.base.Result;
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
9 import de.intevation.gnv.geobackend.base.query.exception.QueryException;
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
10
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
11 /**
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
12 * This Interface provides the Method to execute Queries
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
13 * against a Datastore eg. Databases
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
14 * @author Tim Englich <tim.englich@intevation.de>
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
15 *
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 public interface QueryExecutor {
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
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
20 /**
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
21 * This Method executes the Query an returns the Result
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
22 * in an Collection.
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
23 * @param queryID the ID of the Query which should be used.
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
24 * @param filter the Filterarguments to limit the Data
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
25 * @return the fetched Values
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
26 * @throws QueryException
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
27 */
541
3cbf11c67fdc Experimental caching of SQL results via Ehache
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 132
diff changeset
28 Collection<Result> executeQuery(String queryID, String[] filter) throws QueryException;
3cbf11c67fdc Experimental caching of SQL results via Ehache
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 132
diff changeset
29
3cbf11c67fdc Experimental caching of SQL results via Ehache
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 132
diff changeset
30 Collection<Result> cachedResults(String query);
3cbf11c67fdc Experimental caching of SQL results via Ehache
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 132
diff changeset
31
3cbf11c67fdc Experimental caching of SQL results via Ehache
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 132
diff changeset
32 void cacheResults(String query, Collection<Result> results);
132
5a583cff97ea Implementation of the Datainfrastructure for fetching Data from different DataStores.
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
33 }
http://dive4elements.wald.intevation.org