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 @ 42811
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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.DataStore; |
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34 | import org.gvsig.fmap.dal.exception.DataException; |
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35 | import org.gvsig.fmap.dal.exception.ReadRuntimeException; |
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36 | import org.gvsig.fmap.dal.feature.EditableFeature; |
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37 | import org.gvsig.fmap.dal.feature.Feature; |
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38 | import org.gvsig.fmap.dal.feature.FeatureReference; |
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39 | import org.gvsig.fmap.dal.feature.FeatureSet; |
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40 | import org.gvsig.fmap.dal.feature.FeatureType; |
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41 | 42775 | jjdelcerro | import org.gvsig.fmap.dal.feature.impl.dynobjectutils.DynObjectSetFeatureSetFacade; |
42 | 40435 | jjdelcerro | import org.gvsig.fmap.dal.feature.spi.FeatureProvider; |
43 | import org.gvsig.fmap.dal.feature.spi.FeatureReferenceProviderServices; |
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44 | import org.gvsig.fmap.dal.feature.spi.FeatureSetProvider; |
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45 | import org.gvsig.fmap.dal.feature.spi.FeatureStoreProvider; |
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46 | import org.gvsig.fmap.dal.feature.spi.FeatureStoreProviderServices; |
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47 | import org.gvsig.fmap.dal.feature.spi.LongList; |
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48 | import org.gvsig.fmap.dal.feature.spi.index.FeatureIndexProviderServices; |
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49 | import org.gvsig.tools.dispose.DisposableIterator; |
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50 | import org.gvsig.tools.dynobject.DynObjectSet; |
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51 | import org.gvsig.tools.exception.BaseException; |
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52 | import org.gvsig.tools.visitor.Visitor; |
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53 | |||
54 | |||
55 | 42488 | jjdelcerro | public class IndexFeatureSet implements FeatureSet, FeatureSetProvider, Iterable<Feature> { |
56 | 40435 | jjdelcerro | |
57 | LongList featureReferences = null;
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58 | FeatureStoreProvider storeProvider = null;
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59 | FeatureStoreProviderServices store = null;
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60 | FeatureIndexProviderServices index = null;
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61 | List featureTypes = null; |
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62 | |||
63 | public class IndexIterator implements DisposableIterator { |
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64 | Iterator it = null; |
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65 | |||
66 | public IndexIterator(Iterator it) { |
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67 | this.it = it;
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68 | } |
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69 | |||
70 | public boolean hasNext() { |
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71 | return it.hasNext();
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72 | } |
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73 | |||
74 | public Object next() { |
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75 | Object oid = it.next();
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76 | FeatureReference ref = new DefaultFeatureReference(store
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77 | .getFeatureStore(), oid); |
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78 | try {
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79 | return store.getFeatureStore().getFeatureByReference(ref);
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80 | } catch (DataException e) {
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81 | 42811 | jjdelcerro | throw new ReadRuntimeException(store.getName(),oid, e); |
82 | 40435 | jjdelcerro | } |
83 | } |
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84 | |||
85 | public void remove() { |
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86 | throw new UnsupportedOperationException(); |
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87 | } |
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88 | |||
89 | public void dispose() { |
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90 | this.it = null; |
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91 | } |
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92 | } |
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93 | |||
94 | public class FastIndexIterator implements DisposableIterator { |
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95 | Iterator it = null; |
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96 | DefaultFeature feature = null;
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97 | |||
98 | public FastIndexIterator(Iterator it) throws DataException { |
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99 | this.it = it;
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100 | feature = (DefaultFeature) store.createFeature(storeProvider |
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101 | .createFeatureProvider(index.getFeatureType())); |
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102 | } |
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103 | |||
104 | public boolean hasNext() { |
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105 | return it.hasNext();
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106 | } |
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107 | |||
108 | public Object next() { |
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109 | Object oid = it.next();
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110 | try {
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111 | // Long longer=new Long(((Integer)oid).longValue());
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112 | FeatureReference ref = new DefaultFeatureReference(store
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113 | .getFeatureStore(), oid); |
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114 | FeatureProvider data = storeProvider |
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115 | .getFeatureProviderByReference((FeatureReferenceProviderServices) ref); |
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116 | |||
117 | feature.setData(data); |
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118 | |||
119 | return feature;
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120 | } catch (DataException e) {
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121 | 42811 | jjdelcerro | throw new ReadRuntimeException(store.getName(),oid, e); |
122 | 40435 | jjdelcerro | } |
123 | } |
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124 | |||
125 | public void remove() { |
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126 | throw new UnsupportedOperationException(); |
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127 | } |
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128 | |||
129 | public void dispose() { |
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130 | this.it = null; |
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131 | this.feature = null; |
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132 | |||
133 | } |
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134 | } |
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135 | |||
136 | public IndexFeatureSet(FeatureIndexProviderServices index, LongList featureReferences) {
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137 | this.featureReferences = featureReferences;
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138 | this.store = index.getFeatureStoreProviderServices();
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139 | this.storeProvider = store.getProvider();
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140 | this.index = index;
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141 | } |
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142 | |||
143 | public boolean canFilter() { |
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144 | return false; |
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145 | } |
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146 | |||
147 | public boolean canIterateFromIndex() { |
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148 | return true; |
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149 | } |
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150 | |||
151 | public boolean canOrder() { |
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152 | return false; |
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153 | } |
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154 | |||
155 | public DisposableIterator fastIterator(long index) throws DataException { |
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156 | if (store.getFeatureStore().isEditing()) {
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157 | return this.iterator(index); |
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158 | } |
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159 | return new FastIndexIterator(this.featureReferences.iterator(index)); |
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160 | } |
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161 | |||
162 | public DisposableIterator fastIterator() throws DataException { |
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163 | if (store.getFeatureStore().isEditing()) {
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164 | return this.iterator(); |
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165 | } |
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166 | return new FastIndexIterator(this.featureReferences.iterator()); |
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167 | } |
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168 | |||
169 | public long getSize() throws DataException { |
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170 | return featureReferences.getSize();
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171 | } |
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172 | |||
173 | public boolean isEmpty() throws DataException { |
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174 | return featureReferences.isEmpty();
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175 | } |
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176 | |||
177 | 42488 | jjdelcerro | public DisposableIterator iterator() {
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178 | 40435 | jjdelcerro | return new IndexIterator(this.featureReferences.iterator()); |
179 | } |
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180 | |||
181 | public DisposableIterator iterator(long index) throws DataException { |
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182 | return new IndexIterator(this.featureReferences.iterator(index)); |
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183 | } |
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184 | |||
185 | public void delete(Feature feature) throws DataException { |
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186 | index.delete(feature); |
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187 | store.getFeatureStore().delete(feature); |
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188 | } |
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189 | |||
190 | public FeatureType getDefaultFeatureType() {
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191 | return index.getFeatureType();
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192 | } |
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193 | |||
194 | public List getFeatureTypes() { |
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195 | List types = new ArrayList(); |
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196 | types.add(index.getFeatureType()); |
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197 | return Collections.unmodifiableList(types); |
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198 | } |
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199 | |||
200 | public void insert(EditableFeature feature) throws DataException { |
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201 | index.insert(feature); |
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202 | store.getFeatureStore().insert(feature); |
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203 | } |
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204 | |||
205 | public void update(EditableFeature feature) throws DataException { |
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206 | store.getFeatureStore().update(feature); |
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207 | // we need to re-index the feature, since its shape might have changed
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208 | index.delete(feature); |
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209 | index.insert(feature); |
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210 | } |
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211 | |||
212 | public void dispose() { |
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213 | |||
214 | } |
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215 | |||
216 | public boolean isFromStore(DataStore store) { |
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217 | return this.store.equals(store); |
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218 | } |
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219 | |||
220 | public void accept(Visitor visitor) throws BaseException { |
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221 | accept(visitor, 0);
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222 | } |
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223 | |||
224 | public void accept(Visitor visitor, long firstValueIndex) |
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225 | throws BaseException {
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226 | synchronized (store.getFeatureStore()) {
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227 | DisposableIterator iterator = fastIterator(firstValueIndex); |
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228 | |||
229 | if (iterator != null) { |
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230 | try {
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231 | while (iterator.hasNext()) {
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232 | Feature feature = (Feature) iterator.next(); |
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233 | visitor.visit(feature); |
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234 | } |
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235 | } finally {
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236 | iterator.dispose(); |
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237 | } |
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238 | } |
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239 | } |
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240 | } |
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241 | |||
242 | public DynObjectSet getDynObjectSet() {
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243 | return new DynObjectSetFeatureSetFacade(this, store.getFeatureStore()); |
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244 | } |
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245 | |||
246 | public DynObjectSet getDynObjectSet(boolean fast) { |
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247 | return new DynObjectSetFeatureSetFacade(this, store.getFeatureStore(), |
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248 | fast); |
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249 | } |
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250 | |||
251 | 40767 | jjdelcerro | } |