svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.impl / src / main / java / org / gvsig / fmap / dal / feature / impl / IndexFeatureSet.java @ 47049
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1 | 40559 | jjdelcerro | /**
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2 | * gvSIG. Desktop Geographic Information System.
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3 | *
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4 | * Copyright (C) 2007-2013 gvSIG Association.
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5 | *
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6 | * 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 3
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9 | * of the License, or (at your option) any later version.
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10 | *
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11 | * 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 | *
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16 | * 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 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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19 | * MA 02110-1301, USA.
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20 | *
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21 | * For any additional information, do not hesitate to contact us
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22 | * at info AT gvsig.com, or visit our website www.gvsig.com.
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23 | */
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24 | 40435 | jjdelcerro | |
25 | |||
26 | package org.gvsig.fmap.dal.feature.impl; |
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27 | |||
28 | import java.util.ArrayList; |
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29 | import java.util.Collections; |
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30 | import java.util.Iterator; |
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31 | import java.util.List; |
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32 | |||
33 | import org.gvsig.fmap.dal.exception.DataException; |
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34 | import org.gvsig.fmap.dal.exception.ReadRuntimeException; |
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35 | import org.gvsig.fmap.dal.feature.EditableFeature; |
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36 | import org.gvsig.fmap.dal.feature.Feature; |
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37 | import org.gvsig.fmap.dal.feature.FeatureReference; |
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38 | import org.gvsig.fmap.dal.feature.FeatureSet; |
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39 | 43089 | jjdelcerro | import org.gvsig.fmap.dal.feature.FeatureStore; |
40 | 40435 | jjdelcerro | import org.gvsig.fmap.dal.feature.FeatureType; |
41 | 45647 | fdiaz | import org.gvsig.fmap.dal.feature.impl.featurereference.FeatureReferenceFactory; |
42 | 43089 | jjdelcerro | import org.gvsig.fmap.dal.feature.impl.featureset.AbstractFeatureSet; |
43 | 40435 | jjdelcerro | import org.gvsig.fmap.dal.feature.spi.FeatureProvider; |
44 | import org.gvsig.fmap.dal.feature.spi.FeatureReferenceProviderServices; |
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45 | import org.gvsig.fmap.dal.feature.spi.FeatureSetProvider; |
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46 | import org.gvsig.fmap.dal.feature.spi.FeatureStoreProvider; |
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47 | import org.gvsig.fmap.dal.feature.spi.FeatureStoreProviderServices; |
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48 | import org.gvsig.fmap.dal.feature.spi.LongList; |
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49 | import org.gvsig.fmap.dal.feature.spi.index.FeatureIndexProviderServices; |
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50 | import org.gvsig.tools.dispose.DisposableIterator; |
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51 | |||
52 | 43089 | jjdelcerro | public class IndexFeatureSet |
53 | extends AbstractFeatureSet
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54 | implements FeatureSet, FeatureSetProvider, Iterable<Feature> { |
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55 | 40435 | jjdelcerro | |
56 | LongList featureReferences = null;
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57 | FeatureStoreProvider storeProvider = null;
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58 | FeatureStoreProviderServices store = null;
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59 | FeatureIndexProviderServices index = null;
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60 | List featureTypes = null; |
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61 | |||
62 | public class IndexIterator implements DisposableIterator { |
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63 | Iterator it = null; |
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64 | |||
65 | public IndexIterator(Iterator it) { |
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66 | this.it = it;
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67 | } |
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68 | |||
69 | public boolean hasNext() { |
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70 | return it.hasNext();
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71 | } |
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72 | |||
73 | public Object next() { |
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74 | Object oid = it.next();
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75 | 45647 | fdiaz | FeatureReference ref = FeatureReferenceFactory.createFromOID( |
76 | store.getFeatureStore(), oid); |
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77 | 40435 | jjdelcerro | try {
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78 | return store.getFeatureStore().getFeatureByReference(ref);
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79 | } catch (DataException e) {
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80 | 42811 | jjdelcerro | throw new ReadRuntimeException(store.getName(),oid, e); |
81 | 40435 | jjdelcerro | } |
82 | } |
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83 | |||
84 | public void remove() { |
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85 | throw new UnsupportedOperationException(); |
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86 | } |
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87 | |||
88 | public void dispose() { |
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89 | this.it = null; |
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90 | } |
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91 | } |
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92 | |||
93 | public class FastIndexIterator implements DisposableIterator { |
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94 | Iterator it = null; |
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95 | DefaultFeature feature = null;
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96 | |||
97 | public FastIndexIterator(Iterator it) throws DataException { |
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98 | this.it = it;
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99 | feature = (DefaultFeature) store.createFeature(storeProvider |
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100 | .createFeatureProvider(index.getFeatureType())); |
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101 | } |
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102 | |||
103 | public boolean hasNext() { |
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104 | return it.hasNext();
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105 | } |
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106 | |||
107 | public Object next() { |
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108 | Object oid = it.next();
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109 | try {
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110 | 45647 | fdiaz | FeatureReference ref = FeatureReferenceFactory.createFromOID( |
111 | store.getFeatureStore(), oid); |
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112 | 40435 | jjdelcerro | FeatureProvider data = storeProvider |
113 | .getFeatureProviderByReference((FeatureReferenceProviderServices) ref); |
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114 | |||
115 | feature.setData(data); |
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116 | |||
117 | return feature;
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118 | } catch (DataException e) {
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119 | 42811 | jjdelcerro | throw new ReadRuntimeException(store.getName(),oid, e); |
120 | 40435 | jjdelcerro | } |
121 | } |
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122 | |||
123 | public void remove() { |
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124 | throw new UnsupportedOperationException(); |
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125 | } |
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126 | |||
127 | public void dispose() { |
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128 | this.it = null; |
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129 | this.feature = null; |
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130 | |||
131 | } |
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132 | } |
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133 | |||
134 | public IndexFeatureSet(FeatureIndexProviderServices index, LongList featureReferences) {
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135 | this.featureReferences = featureReferences;
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136 | this.store = index.getFeatureStoreProviderServices();
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137 | this.storeProvider = store.getProvider();
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138 | this.index = index;
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139 | } |
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140 | |||
141 | public boolean canFilter() { |
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142 | return false; |
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143 | } |
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144 | |||
145 | public boolean canIterateFromIndex() { |
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146 | return true; |
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147 | } |
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148 | |||
149 | public boolean canOrder() { |
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150 | return false; |
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151 | } |
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152 | |||
153 | 43358 | jjdelcerro | public DisposableIterator fastIterator(long index) throws DataException { |
154 | return fastIterator(index, 0); |
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155 | } |
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156 | 40435 | jjdelcerro | |
157 | 43358 | jjdelcerro | public DisposableIterator fastIterator(long index, long elements) throws DataException { |
158 | if (store.getFeatureStore().isEditing()) {
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159 | return this.iterator(index, elements); |
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160 | } |
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161 | return new FastIndexIterator(this.featureReferences.iterator(index)); |
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162 | } |
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163 | |||
164 | |||
165 | 40435 | jjdelcerro | public long getSize() throws DataException { |
166 | return featureReferences.getSize();
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167 | } |
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168 | |||
169 | 45425 | jjdelcerro | public boolean isEmpty() { |
170 | 40435 | jjdelcerro | return featureReferences.isEmpty();
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171 | } |
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172 | |||
173 | public DisposableIterator iterator(long index) throws DataException { |
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174 | return new IndexIterator(this.featureReferences.iterator(index)); |
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175 | } |
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176 | |||
177 | 43358 | jjdelcerro | public DisposableIterator iterator(long index, long elements) throws DataException { |
178 | return new IndexIterator(this.featureReferences.iterator(index)); |
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179 | } |
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180 | |||
181 | 40435 | jjdelcerro | public void delete(Feature feature) throws DataException { |
182 | index.delete(feature); |
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183 | store.getFeatureStore().delete(feature); |
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184 | } |
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185 | |||
186 | 44097 | omartinez | @Override
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187 | public void commitChanges() throws DataException { |
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188 | store.getFeatureStore().commitChanges(); |
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189 | } |
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190 | |||
191 | 40435 | jjdelcerro | 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 | store.getFeatureStore().insert(feature); |
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204 | } |
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205 | |||
206 | public void update(EditableFeature feature) throws DataException { |
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207 | store.getFeatureStore().update(feature); |
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208 | // 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 | |||
215 | } |
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216 | |||
217 | 43089 | jjdelcerro | @Override
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218 | public FeatureStore getFeatureStore() {
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219 | return this.store.getFeatureStore(); |
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220 | 40435 | jjdelcerro | } |
221 | |||
222 | 43089 | jjdelcerro | |
223 | |||
224 | 40435 | jjdelcerro | |
225 | 40767 | jjdelcerro | } |