root / branches / v2_0_0_prep / libraries / libFMap_dal / src / org / gvsig / fmap / dal / feature / impl / IndexFeatureSet.java @ 29326
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1 | 23950 | jiyarza | /* gvSIG. Geographic Information System of the Valencian Government
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2 | *
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3 | * Copyright (C) 2007-2008 Infrastructures and Transports Department
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4 | * of the Valencian Government (CIT)
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5 | 24017 | jjdelcerro | *
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6 | 23950 | jiyarza | * This program is free software; you can redistribute it and/or
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7 | * modify it under the terms of the GNU General Public License
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8 | * as published by the Free Software Foundation; either version 2
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9 | * of the License, or (at your option) any later version.
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10 | 24017 | jjdelcerro | *
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11 | 23950 | jiyarza | * This program is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | 24017 | jjdelcerro | *
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16 | 23950 | jiyarza | * You should have received a copy of the GNU General Public License
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17 | * along with this program; if not, write to the Free Software
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18 | 24017 | jjdelcerro | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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19 | 23950 | jiyarza | * MA 02110-1301, USA.
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20 | 24017 | jjdelcerro | *
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21 | 23950 | jiyarza | */
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22 | |||
23 | /*
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24 | * AUTHORS (In addition to CIT):
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25 | * 2008 {{Company}} {{Task}}
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26 | */
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27 | |||
28 | 24017 | jjdelcerro | |
29 | 24496 | jmvivo | package org.gvsig.fmap.dal.feature.impl; |
30 | 23950 | jiyarza | |
31 | 25716 | jiyarza | import java.util.ArrayList; |
32 | import java.util.Collections; |
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33 | 23950 | jiyarza | import java.util.Iterator; |
34 | 25716 | jiyarza | import java.util.List; |
35 | 23950 | jiyarza | |
36 | 25716 | jiyarza | import org.gvsig.fmap.dal.DataStore; |
37 | 24505 | jmvivo | import org.gvsig.fmap.dal.exception.DataException; |
38 | import org.gvsig.fmap.dal.exception.ReadRuntimeException; |
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39 | 27525 | jmvivo | import org.gvsig.fmap.dal.feature.DisposableIterator; |
40 | 25716 | jiyarza | import org.gvsig.fmap.dal.feature.EditableFeature; |
41 | 24496 | jmvivo | import org.gvsig.fmap.dal.feature.Feature; |
42 | import org.gvsig.fmap.dal.feature.FeatureReference; |
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43 | 25716 | jiyarza | import org.gvsig.fmap.dal.feature.FeatureSet; |
44 | import org.gvsig.fmap.dal.feature.FeatureType; |
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45 | 29289 | jmvivo | import org.gvsig.fmap.dal.feature.spi.FeatureProvider; |
46 | 24496 | jmvivo | import org.gvsig.fmap.dal.feature.spi.FeatureReferenceProviderServices; |
47 | import org.gvsig.fmap.dal.feature.spi.FeatureSetProvider; |
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48 | import org.gvsig.fmap.dal.feature.spi.FeatureStoreProvider; |
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49 | 25917 | jmvivo | import org.gvsig.fmap.dal.feature.spi.FeatureStoreProviderServices; |
50 | 24496 | jmvivo | import org.gvsig.fmap.dal.feature.spi.LongList; |
51 | import org.gvsig.fmap.dal.feature.spi.index.FeatureIndexProviderServices; |
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52 | 25716 | jiyarza | import org.gvsig.tools.exception.BaseException; |
53 | import org.gvsig.tools.visitor.Visitor; |
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54 | 23950 | jiyarza | |
55 | |||
56 | 25716 | jiyarza | public class IndexFeatureSet implements FeatureSet, FeatureSetProvider { |
57 | 23950 | jiyarza | |
58 | LongList featureReferences = null;
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59 | 25917 | jmvivo | FeatureStoreProvider storeProvider = null;
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60 | FeatureStoreProviderServices store = null;
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61 | 23950 | jiyarza | FeatureIndexProviderServices index = null;
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62 | 25716 | jiyarza | List featureTypes = null; |
63 | 24017 | jjdelcerro | |
64 | 27525 | jmvivo | public class IndexIterator implements DisposableIterator { |
65 | 23950 | jiyarza | Iterator it = null; |
66 | 24017 | jjdelcerro | |
67 | 23950 | jiyarza | public IndexIterator(Iterator it) { |
68 | 24017 | jjdelcerro | this.it = it;
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69 | 23950 | jiyarza | } |
70 | |||
71 | public boolean hasNext() { |
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72 | return it.hasNext();
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73 | } |
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74 | |||
75 | public Object next() { |
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76 | 24248 | jjdelcerro | Object oid = it.next();
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77 | 29326 | jmvivo | FeatureReference ref = new DefaultFeatureReference(store
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78 | .getFeatureStore(), oid); |
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79 | 23950 | jiyarza | try {
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80 | 29326 | jmvivo | return store.getFeatureStore().getFeatureByReference(ref);
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81 | 23950 | jiyarza | } catch (DataException e) {
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82 | 25917 | jmvivo | throw new ReadRuntimeException(store.getName(), e); |
83 | 23950 | jiyarza | } |
84 | } |
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85 | |||
86 | public void remove() { |
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87 | throw new UnsupportedOperationException(); |
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88 | } |
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89 | 27525 | jmvivo | |
90 | public void dispose() { |
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91 | this.it = null; |
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92 | } |
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93 | 23950 | jiyarza | } |
94 | 24017 | jjdelcerro | |
95 | 27525 | jmvivo | public class FastIndexIterator implements DisposableIterator { |
96 | 23950 | jiyarza | Iterator it = null; |
97 | 25917 | jmvivo | DefaultFeature feature = null;
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98 | 24017 | jjdelcerro | |
99 | 23950 | jiyarza | public FastIndexIterator(Iterator it) throws DataException { |
100 | 24017 | jjdelcerro | this.it = it;
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101 | 25917 | jmvivo | feature = (DefaultFeature) store.createFeature(storeProvider |
102 | 29292 | jmvivo | .createFeatureProvider(index.getFeatureType())); |
103 | 23950 | jiyarza | } |
104 | |||
105 | public boolean hasNext() { |
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106 | return it.hasNext();
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107 | } |
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108 | |||
109 | public Object next() { |
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110 | 24248 | jjdelcerro | Object oid = it.next();
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111 | 23950 | jiyarza | try {
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112 | 25917 | jmvivo | // Long longer=new Long(((Integer)oid).longValue());
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113 | 29326 | jmvivo | FeatureReference ref = new DefaultFeatureReference(store
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114 | .getFeatureStore(), oid); |
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115 | 29289 | jmvivo | FeatureProvider data = storeProvider |
116 | 29292 | jmvivo | .getFeatureProviderByReference((FeatureReferenceProviderServices) ref); |
117 | 25917 | jmvivo | |
118 | feature.setData(data); |
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119 | |||
120 | return feature;
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121 | 23950 | jiyarza | } catch (DataException e) {
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122 | 25917 | jmvivo | throw new ReadRuntimeException(store.getName(), e); |
123 | 23950 | jiyarza | } |
124 | } |
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125 | |||
126 | public void remove() { |
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127 | throw new UnsupportedOperationException(); |
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128 | } |
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129 | 27525 | jmvivo | |
130 | public void dispose() { |
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131 | this.it = null; |
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132 | this.feature = null; |
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133 | |||
134 | } |
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135 | 24017 | jjdelcerro | } |
136 | |||
137 | 23950 | jiyarza | public IndexFeatureSet(FeatureIndexProviderServices index, LongList featureReferences) {
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138 | this.featureReferences = featureReferences;
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139 | 29326 | jmvivo | this.store = index.getFeatureStoreProviderServices();
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140 | 25917 | jmvivo | this.storeProvider = store.getProvider();
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141 | 23950 | jiyarza | this.index = index;
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142 | } |
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143 | 24017 | jjdelcerro | |
144 | 23950 | jiyarza | public boolean canFilter() { |
145 | return false; |
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146 | } |
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147 | |||
148 | public boolean canIterateFromIndex() { |
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149 | return true; |
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150 | } |
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151 | |||
152 | public boolean canOrder() { |
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153 | return false; |
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154 | } |
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155 | |||
156 | 27525 | jmvivo | public DisposableIterator fastIterator(long index) throws DataException { |
157 | 29326 | jmvivo | if (store.getFeatureStore().isEditing()) {
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158 | 25917 | jmvivo | return this.iterator(index); |
159 | } |
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160 | 25721 | jiyarza | return new FastIndexIterator(this.featureReferences.iterator(index)); |
161 | 23950 | jiyarza | } |
162 | |||
163 | 27525 | jmvivo | public DisposableIterator fastIterator() throws DataException { |
164 | 29326 | jmvivo | if (store.getFeatureStore().isEditing()) {
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165 | 25917 | jmvivo | return this.iterator(); |
166 | } |
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167 | 23950 | jiyarza | return new FastIndexIterator(this.featureReferences.iterator()); |
168 | } |
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169 | |||
170 | public long getSize() throws DataException { |
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171 | return featureReferences.getSize();
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172 | } |
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173 | |||
174 | 24017 | jjdelcerro | public boolean isEmpty() throws DataException { |
175 | 23950 | jiyarza | return featureReferences.isEmpty();
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176 | } |
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177 | |||
178 | 27525 | jmvivo | public DisposableIterator iterator() throws DataException { |
179 | 23950 | jiyarza | return new IndexIterator(this.featureReferences.iterator()); |
180 | } |
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181 | |||
182 | 27525 | jmvivo | public DisposableIterator iterator(long index) throws DataException { |
183 | 25917 | jmvivo | return new IndexIterator(this.featureReferences.iterator(index)); |
184 | 23950 | jiyarza | } |
185 | |||
186 | 25716 | jiyarza | public void delete(Feature feature) throws DataException { |
187 | index.delete(feature); |
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188 | 29326 | jmvivo | store.getFeatureStore().delete(feature); |
189 | 25716 | jiyarza | } |
190 | |||
191 | public FeatureType getDefaultFeatureType() {
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192 | return index.getFeatureType();
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193 | } |
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194 | |||
195 | public List getFeatureTypes() { |
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196 | List types = new ArrayList(); |
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197 | types.add(index.getFeatureType()); |
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198 | return Collections.unmodifiableList(types); |
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199 | } |
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200 | |||
201 | public void insert(EditableFeature feature) throws DataException { |
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202 | index.insert(feature); |
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203 | 29326 | jmvivo | store.getFeatureStore().insert(feature); |
204 | 25716 | jiyarza | } |
205 | |||
206 | public void update(EditableFeature feature) throws DataException { |
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207 | 29326 | jmvivo | store.getFeatureStore().update(feature); |
208 | 25716 | jiyarza | // we need to re-index the feature, since its shape might have changed
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209 | index.delete(feature); |
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210 | index.insert(feature); |
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211 | } |
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212 | |||
213 | public void dispose() { |
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214 | 25917 | jmvivo | |
215 | 25716 | jiyarza | } |
216 | |||
217 | public boolean isFromStore(DataStore store) { |
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218 | return this.store.equals(store); |
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219 | } |
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220 | |||
221 | public void accept(Visitor visitor) throws BaseException { |
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222 | 27525 | jmvivo | DisposableIterator iterator = iterator(); |
223 | 25716 | jiyarza | |
224 | while (iterator.hasNext()) {
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225 | Feature feature = (Feature) iterator.next(); |
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226 | visitor.visit(feature); |
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227 | } |
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228 | 27525 | jmvivo | iterator.dispose(); |
229 | 25716 | jiyarza | } |
230 | |||
231 | 23950 | jiyarza | } |