svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.spi / src / main / java / org / gvsig / fmap / dal / feature / spi / memory / MemoryFeatureSet.java @ 40559
History | View | Annotate | Download (4.67 KB)
1 | 40559 | jjdelcerro | /**
|
---|---|---|---|
2 | * gvSIG. Desktop Geographic Information System.
|
||
3 | 40435 | jjdelcerro | *
|
4 | 40559 | jjdelcerro | * Copyright (C) 2007-2013 gvSIG Association.
|
5 | 40435 | jjdelcerro | *
|
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 | 40559 | jjdelcerro | * as published by the Free Software Foundation; either version 3
|
9 | 40435 | jjdelcerro | * 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 | 40559 | jjdelcerro | * For any additional information, do not hesitate to contact us
|
22 | * at info AT gvsig.com, or visit our website www.gvsig.com.
|
||
23 | 40435 | jjdelcerro | */
|
24 | /*
|
||
25 | * AUTHORS (In addition to CIT):
|
||
26 | * 2009 IVER T.I {{Task}}
|
||
27 | */
|
||
28 | package org.gvsig.fmap.dal.feature.spi.memory; |
||
29 | |||
30 | import java.util.Iterator; |
||
31 | import java.util.List; |
||
32 | |||
33 | import org.gvsig.fmap.dal.exception.DataException; |
||
34 | import org.gvsig.fmap.dal.feature.FeatureQuery; |
||
35 | import org.gvsig.fmap.dal.feature.FeatureType; |
||
36 | import org.gvsig.fmap.dal.feature.exception.IteratorIndexTooBigException; |
||
37 | import org.gvsig.fmap.dal.feature.spi.AbstractFeatureProviderIterator; |
||
38 | import org.gvsig.fmap.dal.feature.spi.AbstractFeatureSetProvider; |
||
39 | import org.gvsig.fmap.dal.feature.spi.AbstractFeatureStoreProvider; |
||
40 | import org.gvsig.fmap.dal.feature.spi.DefaultFeatureProvider; |
||
41 | import org.gvsig.fmap.dal.feature.spi.FeatureSetProvider; |
||
42 | import org.gvsig.tools.dispose.Disposable; |
||
43 | import org.gvsig.tools.exception.BaseException; |
||
44 | |||
45 | /**
|
||
46 | * Implementation of {@link FeatureSetProvider} used in
|
||
47 | * {@link AbstractMemoryStoreProvider}
|
||
48 | *
|
||
49 | */
|
||
50 | public class MemoryFeatureSet extends AbstractFeatureSetProvider { |
||
51 | |||
52 | protected List data; |
||
53 | |||
54 | public MemoryFeatureSet(AbstractFeatureStoreProvider store,
|
||
55 | FeatureQuery query, FeatureType featureType, List data) {
|
||
56 | super(store, query,
|
||
57 | /*
|
||
58 | * Comprobar si los attributos solicitados son distintos a los
|
||
59 | * originales.
|
||
60 | */
|
||
61 | featureType.equals(store.getStoreServices() |
||
62 | .getProviderFeatureType(featureType.getId())) ? null
|
||
63 | : featureType); |
||
64 | this.data = data;
|
||
65 | /*
|
||
66 | * Nota: Como no sabe filtrar ni ordenar ignora el query.
|
||
67 | */
|
||
68 | } |
||
69 | |||
70 | public boolean canFilter() { |
||
71 | return false; |
||
72 | } |
||
73 | |||
74 | public boolean canOrder() { |
||
75 | return false; |
||
76 | } |
||
77 | |||
78 | public boolean canIterateFromIndex() { |
||
79 | return true; |
||
80 | } |
||
81 | |||
82 | public long getSize() throws DataException { |
||
83 | return data.size();
|
||
84 | } |
||
85 | |||
86 | public boolean isEmpty() throws DataException { |
||
87 | return data.isEmpty();
|
||
88 | } |
||
89 | |||
90 | protected void doDispose() throws BaseException { |
||
91 | //data only has to be deleted when the store.dispose method is called
|
||
92 | //data.clear();
|
||
93 | } |
||
94 | |||
95 | protected AbstractFeatureProviderIterator createFastIterator(long index) |
||
96 | throws DataException {
|
||
97 | return createIterator(index);
|
||
98 | } |
||
99 | |||
100 | protected AbstractFeatureProviderIterator createIterator(long index) |
||
101 | throws DataException {
|
||
102 | if (index > 0 && index >= data.size()) { |
||
103 | throw new IteratorIndexTooBigException(index, data.size()); |
||
104 | } |
||
105 | Iterator iter =
|
||
106 | index <= 0 ? data.iterator() : data.listIterator((int) index); |
||
107 | if (getFeatureType() == null) { |
||
108 | return new DelegatedDisposableIterator(getStore(), iter); |
||
109 | } else {
|
||
110 | return new DelegatedDisposableWrappedIterator(getStore(), iter, |
||
111 | getFeatureType()); |
||
112 | } |
||
113 | } |
||
114 | |||
115 | protected class DelegatedDisposableIterator extends |
||
116 | AbstractFeatureProviderIterator { |
||
117 | private Iterator delegated; |
||
118 | |||
119 | public DelegatedDisposableIterator(AbstractFeatureStoreProvider store,
|
||
120 | Iterator it) {
|
||
121 | super(store);
|
||
122 | this.delegated = it;
|
||
123 | } |
||
124 | |||
125 | protected void internalDispose() { |
||
126 | this.delegated = null; |
||
127 | } |
||
128 | |||
129 | protected boolean internalHasNext() { |
||
130 | return delegated.hasNext();
|
||
131 | } |
||
132 | |||
133 | protected Object internalNext() { |
||
134 | return delegated.next();
|
||
135 | } |
||
136 | |||
137 | public void remove() { |
||
138 | throw new UnsupportedOperationException(); |
||
139 | } |
||
140 | |||
141 | protected void doDispose() throws BaseException { |
||
142 | if (delegated instanceof Disposable) { |
||
143 | ((Disposable) delegated).dispose(); |
||
144 | } |
||
145 | } |
||
146 | } |
||
147 | |||
148 | protected class DelegatedDisposableWrappedIterator extends |
||
149 | DelegatedDisposableIterator { |
||
150 | private FeatureType fType;
|
||
151 | |||
152 | public DelegatedDisposableWrappedIterator(
|
||
153 | AbstractFeatureStoreProvider store, Iterator it,
|
||
154 | FeatureType featureType) { |
||
155 | super(store, it);
|
||
156 | this.fType = featureType;
|
||
157 | } |
||
158 | |||
159 | protected Object internalNext() { |
||
160 | DefaultFeatureProvider feature = |
||
161 | (DefaultFeatureProvider) super.internalNext();
|
||
162 | if (fType == null) { |
||
163 | return feature;
|
||
164 | } else {
|
||
165 | return new MemoryFeatureProviderAttributeMapper(feature, |
||
166 | this.fType);
|
||
167 | } |
||
168 | |||
169 | } |
||
170 | } |
||
171 | } |