svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.api / src / main / java / org / gvsig / fmap / dal / feature / FeatureCache.java @ 44259
History | View | Annotate | Download (2.49 KB)
1 | 40559 | jjdelcerro | /**
|
---|---|---|---|
2 | * gvSIG. Desktop Geographic Information System.
|
||
3 | *
|
||
4 | * Copyright (C) 2007-2013 gvSIG Association.
|
||
5 | *
|
||
6 | * This program is free software; you can redistribute it and/or
|
||
7 | * modify it under the terms of the GNU General Public License
|
||
8 | * as published by the Free Software Foundation; either version 3
|
||
9 | * of the License, or (at your option) any later version.
|
||
10 | *
|
||
11 | * This program is distributed in the hope that it will be useful,
|
||
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
14 | * GNU General Public License for more details.
|
||
15 | *
|
||
16 | * You should have received a copy of the GNU General Public License
|
||
17 | * along with this program; if not, write to the Free Software
|
||
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
||
19 | * MA 02110-1301, USA.
|
||
20 | *
|
||
21 | * For any additional information, do not hesitate to contact us
|
||
22 | * at info AT gvsig.com, or visit our website www.gvsig.com.
|
||
23 | */
|
||
24 | 43755 | fdiaz | |
25 | 40435 | jjdelcerro | package org.gvsig.fmap.dal.feature; |
26 | |||
27 | 43755 | fdiaz | import org.gvsig.fmap.dal.DataCache; |
28 | 40435 | jjdelcerro | import org.gvsig.fmap.dal.exception.DataException; |
29 | import org.gvsig.fmap.geom.primitive.Envelope; |
||
30 | |||
31 | /**
|
||
32 | * This class represents a vectorial cache that is used to save and retrieve
|
||
33 | * {@link FeatureSet}s. First time that a {@link FeatureStore} have to retrieve
|
||
34 | * data from a {@link FeatureStoreProvider} can save the {@link FeatureSet} in
|
||
35 | * the cache with its envelope. Next time that the store has to access to a envelope
|
||
36 | 43755 | fdiaz | * contained in the previous envelope can retrieve the features directly
|
37 | 40435 | jjdelcerro | * from the cache and it is not necessary to retrieve data from the provider.
|
38 | 43755 | fdiaz | *
|
39 | 40435 | jjdelcerro | * The cache supports different scales and creates
|
40 | 43755 | fdiaz | *
|
41 | 40435 | jjdelcerro | * @author <a href="mailto:jpiera@gvsig.org">Jorge Piera</a>
|
42 | */
|
||
43 | 43755 | fdiaz | public interface FeatureCache extends DataCache{ |
44 | 40435 | jjdelcerro | |
45 | /**
|
||
46 | * Delete all the features for a concrete scale.
|
||
47 | * @param scale
|
||
48 | * The scale.
|
||
49 | * @throws DataException
|
||
50 | */
|
||
51 | public void delete(double scale) throws DataException; |
||
52 | 43755 | fdiaz | |
53 | 40435 | jjdelcerro | /**
|
54 | * Add a set of features contained in a envelope for a concrete scale.
|
||
55 | * @param featureSet
|
||
56 | * The feature set retrieved from the server.
|
||
57 | * @throws DataException
|
||
58 | */
|
||
59 | public void addFeatures(FeatureSet featureSet, FeatureStore featureStore) throws DataException; |
||
60 | 43755 | fdiaz | |
61 | 40435 | jjdelcerro | /**
|
62 | * Return a feature set form a concrete envelope and a scale.
|
||
63 | * @param envelope
|
||
64 | * The envelope.
|
||
65 | * @param scale
|
||
66 | * The scale.
|
||
67 | * @return
|
||
68 | * A feature set contained in the evelope.
|
||
69 | * @throws DataException
|
||
70 | */
|
||
71 | public FeatureSet getFeatureSet(Envelope envelope, double scale) throws DataException; |
||
72 | } |