svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.file / org.gvsig.fmap.dal.file.csv / src / main / java / org / gvsig / fmap / dal / store / simplereader / SimpleReaderSetProvider.java @ 47638
History | View | Annotate | Download (7.66 KB)
1 | 40435 | jjdelcerro | /**
|
---|---|---|---|
2 | 40559 | jjdelcerro | * gvSIG. Desktop Geographic Information System.
|
3 | 40435 | jjdelcerro | *
|
4 | 40559 | jjdelcerro | * 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 | 40435 | jjdelcerro | */
|
24 | 47634 | fdiaz | package org.gvsig.fmap.dal.store.simplereader; |
25 | 40435 | jjdelcerro | |
26 | 47638 | jjdelcerro | import org.gvsig.fmap.dal.store.csv.CSVStoreProvider; |
27 | 47199 | jjdelcerro | import java.util.Iterator; |
28 | 45727 | jjdelcerro | import java.util.List; |
29 | 40435 | jjdelcerro | import java.util.NoSuchElementException; |
30 | import org.gvsig.fmap.dal.exception.DataException; |
||
31 | import org.gvsig.fmap.dal.exception.ReadRuntimeException; |
||
32 | import org.gvsig.fmap.dal.feature.FeatureQuery; |
||
33 | import org.gvsig.fmap.dal.feature.FeatureType; |
||
34 | import org.gvsig.fmap.dal.feature.spi.AbstractFeatureProviderIterator; |
||
35 | import org.gvsig.fmap.dal.feature.spi.AbstractFeatureSetProvider; |
||
36 | import org.gvsig.fmap.dal.feature.spi.FeatureProvider; |
||
37 | 47636 | fdiaz | import org.gvsig.fmap.dal.store.csv.*; |
38 | 40435 | jjdelcerro | import org.gvsig.tools.exception.BaseException; |
39 | |||
40 | /**
|
||
41 | * @author jjdelcerro
|
||
42 | *
|
||
43 | */
|
||
44 | 47634 | fdiaz | public class SimpleReaderSetProvider extends AbstractFeatureSetProvider { |
45 | 40435 | jjdelcerro | |
46 | 47634 | fdiaz | private static class SimpleReaderFeatureProvider extends AbstractFeatureProviderLoadedOnDemand { |
47 | 40435 | jjdelcerro | |
48 | 47634 | fdiaz | protected SimpleReaderStoreProvider store;
|
49 | 40435 | jjdelcerro | |
50 | 47634 | fdiaz | public SimpleReaderFeatureProvider(SimpleReaderStoreProvider store, FeatureType type) {
|
51 | 45727 | jjdelcerro | super(type);
|
52 | this.store = store;
|
||
53 | } |
||
54 | 40435 | jjdelcerro | |
55 | 45727 | jjdelcerro | @Override
|
56 | protected void doLoad() { |
||
57 | try {
|
||
58 | 47634 | fdiaz | SimpleReaderStoreProvider.RowToFeatureTranslator translator = this.store.getRowToFeatureTranslator();
|
59 | 45727 | jjdelcerro | long index = this.getOID(); |
60 | List<String> row = this.store.getRowByIndex(index); |
||
61 | translator.translate(index, row, this);
|
||
62 | } catch (Exception ex) { |
||
63 | throw new ReadRuntimeException(getStoreFullName(), this.getOID(), ex); |
||
64 | } |
||
65 | } |
||
66 | 40435 | jjdelcerro | |
67 | 45727 | jjdelcerro | @Override
|
68 | public Long getOID() { |
||
69 | return (Long) super.getOID(); |
||
70 | } |
||
71 | 40435 | jjdelcerro | |
72 | 45727 | jjdelcerro | public void setOID(long oid) { |
73 | super.setOID(oid);
|
||
74 | } |
||
75 | 40435 | jjdelcerro | |
76 | 45727 | jjdelcerro | private String getStoreFullName() { |
77 | try {
|
||
78 | return this.store.getFullName(); |
||
79 | } catch (Exception ex) { |
||
80 | return "unknown"; |
||
81 | } |
||
82 | } |
||
83 | 40435 | jjdelcerro | |
84 | 45727 | jjdelcerro | } |
85 | 47634 | fdiaz | private class SimpleReaderIterator extends AbstractFeatureProviderIterator { |
86 | 40435 | jjdelcerro | |
87 | 45727 | jjdelcerro | protected long index; |
88 | protected FeatureType type;
|
||
89 | protected long count; |
||
90 | 47199 | jjdelcerro | protected final FeatureQuery query; |
91 | protected Iterator spatialIndexIt; |
||
92 | 40435 | jjdelcerro | |
93 | 47634 | fdiaz | public SimpleReaderIterator(SimpleReaderStoreProvider store, FeatureQuery query, FeatureType type,
|
94 | 45727 | jjdelcerro | long startOn) throws DataException { |
95 | super(store);
|
||
96 | this.index = startOn;
|
||
97 | this.type = type;
|
||
98 | 47199 | jjdelcerro | this.query = query;
|
99 | 45727 | jjdelcerro | this.count = store.getFeatureCount();
|
100 | 47199 | jjdelcerro | if( this.query!=null ) { |
101 | this.spatialIndexIt = createSpatialIterator(
|
||
102 | store.getFeatureStore().getDefaultFeatureTypeQuietly(), |
||
103 | query, |
||
104 | store.getSpatialIndex() |
||
105 | ); |
||
106 | } |
||
107 | 45727 | jjdelcerro | } |
108 | 40435 | jjdelcerro | |
109 | 45727 | jjdelcerro | @Override
|
110 | 47199 | jjdelcerro | protected CSVStoreProvider getFeatureStoreProvider() {
|
111 | return (CSVStoreProvider) super.getFeatureStoreProvider(); |
||
112 | } |
||
113 | |||
114 | @Override
|
||
115 | 45727 | jjdelcerro | protected boolean internalHasNext() { |
116 | 47199 | jjdelcerro | if( this.spatialIndexIt != null ) { |
117 | return this.spatialIndexIt.hasNext(); |
||
118 | } |
||
119 | 45727 | jjdelcerro | return this.count > index; |
120 | } |
||
121 | 40435 | jjdelcerro | |
122 | 45727 | jjdelcerro | @Override
|
123 | protected FeatureProvider internalNext() {
|
||
124 | 47634 | fdiaz | SimpleReaderFeatureProvider data = new SimpleReaderFeatureProvider(getStore(), type);
|
125 | 47199 | jjdelcerro | if( this.spatialIndexIt != null ) { |
126 | Object oid = this.spatialIndexIt.next(); |
||
127 | data.setOID(oid); |
||
128 | } else {
|
||
129 | if (index >= this.count) { |
||
130 | throw new NoSuchElementException(); |
||
131 | } |
||
132 | data.setOID(index++); |
||
133 | } |
||
134 | 45727 | jjdelcerro | return data;
|
135 | } |
||
136 | 40435 | jjdelcerro | |
137 | 45727 | jjdelcerro | @Override
|
138 | public void remove() { |
||
139 | throw new UnsupportedOperationException(); |
||
140 | } |
||
141 | 40435 | jjdelcerro | |
142 | 45727 | jjdelcerro | protected void internalDispose() { |
143 | type = null;
|
||
144 | } |
||
145 | 40435 | jjdelcerro | |
146 | 45727 | jjdelcerro | @Override
|
147 | protected void doDispose() throws BaseException { |
||
148 | // Nothing to do
|
||
149 | } |
||
150 | } |
||
151 | 40435 | jjdelcerro | |
152 | 47634 | fdiaz | private class FastCSVIterator extends SimpleReaderIterator { |
153 | 40435 | jjdelcerro | |
154 | 45727 | jjdelcerro | protected FeatureProvider data;
|
155 | 40435 | jjdelcerro | |
156 | 47634 | fdiaz | public FastCSVIterator(SimpleReaderStoreProvider store, FeatureQuery query, FeatureType type,
|
157 | 45727 | jjdelcerro | long startOn) throws DataException { |
158 | 47199 | jjdelcerro | super(store, query, type, startOn);
|
159 | 47634 | fdiaz | this.data = new SimpleReaderFeatureProvider(store, type); |
160 | 45727 | jjdelcerro | } |
161 | 40435 | jjdelcerro | |
162 | 45727 | jjdelcerro | @Override
|
163 | protected FeatureProvider internalNext() {
|
||
164 | 47199 | jjdelcerro | if( this.spatialIndexIt != null ) { |
165 | Object oid = this.spatialIndexIt.next(); |
||
166 | data.setOID(oid); |
||
167 | } else {
|
||
168 | if (index >= this.count) { |
||
169 | throw new NoSuchElementException(); |
||
170 | } |
||
171 | data.setOID(index++); |
||
172 | } |
||
173 | return data;
|
||
174 | 45727 | jjdelcerro | } |
175 | 40435 | jjdelcerro | |
176 | 45727 | jjdelcerro | @Override
|
177 | protected void internalDispose() { |
||
178 | super.internalDispose();
|
||
179 | data = null;
|
||
180 | } |
||
181 | } |
||
182 | 40435 | jjdelcerro | |
183 | 47634 | fdiaz | public SimpleReaderSetProvider(SimpleReaderStoreProvider store, FeatureQuery query,
|
184 | 47557 | fdiaz | FeatureType providerFeatureType, FeatureType featureType) |
185 | 45727 | jjdelcerro | throws DataException {
|
186 | 47557 | fdiaz | super(store, query, providerFeatureType, featureType);
|
187 | 45727 | jjdelcerro | } |
188 | 40435 | jjdelcerro | |
189 | 45727 | jjdelcerro | @Override
|
190 | 47634 | fdiaz | protected SimpleReaderStoreProvider getStore() {
|
191 | return (SimpleReaderStoreProvider) super.getStore(); |
||
192 | 45727 | jjdelcerro | } |
193 | 40435 | jjdelcerro | |
194 | 45727 | jjdelcerro | protected String getStoreFullName() { |
195 | try {
|
||
196 | return this.getStore().getFullName(); |
||
197 | } catch (Throwable th) { |
||
198 | return "unknown"; |
||
199 | } |
||
200 | } |
||
201 | |||
202 | @Override
|
||
203 | public boolean canFilter() { |
||
204 | return false; |
||
205 | } |
||
206 | |||
207 | @Override
|
||
208 | public boolean canIterateFromIndex() { |
||
209 | return true; |
||
210 | } |
||
211 | |||
212 | @Override
|
||
213 | public boolean canOrder() { |
||
214 | return false; |
||
215 | } |
||
216 | |||
217 | @Override
|
||
218 | public long getSize() throws DataException { |
||
219 | return getStore().getFeatureCount();
|
||
220 | } |
||
221 | |||
222 | @Override
|
||
223 | public boolean isEmpty() throws DataException { |
||
224 | return getSize() == 0; |
||
225 | } |
||
226 | |||
227 | @Override
|
||
228 | protected void doDispose() throws BaseException { |
||
229 | } |
||
230 | |||
231 | @Override
|
||
232 | protected AbstractFeatureProviderIterator createIterator(long index) |
||
233 | throws DataException {
|
||
234 | 47634 | fdiaz | return new SimpleReaderIterator( |
235 | 45727 | jjdelcerro | getStore(), |
236 | 47199 | jjdelcerro | getQuery(), |
237 | 47436 | fdiaz | getProviderFeatureType(), |
238 | 45727 | jjdelcerro | index |
239 | ); |
||
240 | } |
||
241 | |||
242 | @Override
|
||
243 | protected AbstractFeatureProviderIterator createFastIterator(long index) |
||
244 | throws DataException {
|
||
245 | return new FastCSVIterator( |
||
246 | getStore(), |
||
247 | 47199 | jjdelcerro | getQuery(), |
248 | 47436 | fdiaz | getProviderFeatureType(), |
249 | 45727 | jjdelcerro | index |
250 | ); |
||
251 | } |
||
252 | 40767 | jjdelcerro | } |