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.lib / src / main / java / org / gvsig / fmap / dal / store / simplereader / SimpleReaderSetProvider.java @ 47669
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1 | 40435 | jjdelcerro | /**
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2 | 40559 | jjdelcerro | * gvSIG. Desktop Geographic Information System.
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3 | 40435 | jjdelcerro | *
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4 | 40559 | jjdelcerro | * 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 | 40435 | jjdelcerro | */
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24 | 47634 | fdiaz | package org.gvsig.fmap.dal.store.simplereader; |
25 | 40435 | jjdelcerro | |
26 | 47199 | jjdelcerro | import java.util.Iterator; |
27 | 45727 | jjdelcerro | import java.util.List; |
28 | 40435 | jjdelcerro | import java.util.NoSuchElementException; |
29 | import org.gvsig.fmap.dal.exception.DataException; |
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30 | import org.gvsig.fmap.dal.exception.ReadRuntimeException; |
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31 | import org.gvsig.fmap.dal.feature.FeatureQuery; |
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32 | import org.gvsig.fmap.dal.feature.FeatureType; |
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33 | import org.gvsig.fmap.dal.feature.spi.AbstractFeatureProviderIterator; |
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34 | import org.gvsig.fmap.dal.feature.spi.AbstractFeatureSetProvider; |
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35 | import org.gvsig.fmap.dal.feature.spi.FeatureProvider; |
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36 | 47665 | fdiaz | import org.gvsig.fmap.geom.SpatialIndex; |
37 | 40435 | jjdelcerro | import org.gvsig.tools.exception.BaseException; |
38 | |||
39 | /**
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40 | * @author jjdelcerro
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41 | *
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42 | */
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43 | 47634 | fdiaz | public class SimpleReaderSetProvider extends AbstractFeatureSetProvider { |
44 | 40435 | jjdelcerro | |
45 | 47634 | fdiaz | private static class SimpleReaderFeatureProvider extends AbstractFeatureProviderLoadedOnDemand { |
46 | 40435 | jjdelcerro | |
47 | 47634 | fdiaz | protected SimpleReaderStoreProvider store;
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48 | 40435 | jjdelcerro | |
49 | 47634 | fdiaz | public SimpleReaderFeatureProvider(SimpleReaderStoreProvider store, FeatureType type) {
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50 | 45727 | jjdelcerro | super(type);
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51 | this.store = store;
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52 | } |
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53 | 40435 | jjdelcerro | |
54 | 45727 | jjdelcerro | @Override
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55 | protected void doLoad() { |
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56 | 47652 | fdiaz | long index=-1; |
57 | 45727 | jjdelcerro | try {
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58 | 47652 | fdiaz | index = this.getOID();
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59 | 47634 | fdiaz | SimpleReaderStoreProvider.RowToFeatureTranslator translator = this.store.getRowToFeatureTranslator();
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60 | 45727 | jjdelcerro | List<String> row = this.store.getRowByIndex(index); |
61 | translator.translate(index, row, this);
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62 | 47652 | fdiaz | } catch (Throwable ex) { |
63 | throw new ReadRuntimeException(getStoreFullName(), index, ex); |
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64 | 45727 | jjdelcerro | } |
65 | } |
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66 | 40435 | jjdelcerro | |
67 | 45727 | jjdelcerro | @Override
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68 | public Long getOID() { |
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69 | return (Long) super.getOID(); |
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70 | } |
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71 | 40435 | jjdelcerro | |
72 | 45727 | jjdelcerro | public void setOID(long oid) { |
73 | super.setOID(oid);
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74 | } |
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75 | 40435 | jjdelcerro | |
76 | 45727 | jjdelcerro | private String getStoreFullName() { |
77 | try {
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78 | return this.store.getFullName(); |
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79 | } catch (Exception ex) { |
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80 | return "unknown"; |
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81 | } |
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82 | } |
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83 | 40435 | jjdelcerro | |
84 | 47669 | fdiaz | @Override
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85 | protected void warn(String message, Throwable t) { |
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86 | this.store.getTimedLogger().warn(message, t);
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87 | } |
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88 | 45727 | jjdelcerro | } |
89 | 47669 | fdiaz | |
90 | 47634 | fdiaz | private class SimpleReaderIterator extends AbstractFeatureProviderIterator { |
91 | 40435 | jjdelcerro | |
92 | 45727 | jjdelcerro | protected long index; |
93 | protected FeatureType type;
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94 | protected long count; |
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95 | 47199 | jjdelcerro | protected final FeatureQuery query; |
96 | protected Iterator spatialIndexIt; |
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97 | 40435 | jjdelcerro | |
98 | 47634 | fdiaz | public SimpleReaderIterator(SimpleReaderStoreProvider store, FeatureQuery query, FeatureType type,
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99 | 45727 | jjdelcerro | long startOn) throws DataException { |
100 | super(store);
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101 | this.index = startOn;
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102 | this.type = type;
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103 | 47199 | jjdelcerro | this.query = query;
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104 | 45727 | jjdelcerro | this.count = store.getFeatureCount();
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105 | 47199 | jjdelcerro | if( this.query!=null ) { |
106 | this.spatialIndexIt = createSpatialIterator(
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107 | store.getFeatureStore().getDefaultFeatureTypeQuietly(), |
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108 | 47665 | fdiaz | query |
109 | 47199 | jjdelcerro | ); |
110 | } |
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111 | 45727 | jjdelcerro | } |
112 | 40435 | jjdelcerro | |
113 | 45727 | jjdelcerro | @Override
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114 | 47655 | fdiaz | protected SimpleReaderStoreProvider getFeatureStoreProvider() {
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115 | return (SimpleReaderStoreProvider) super.getFeatureStoreProvider(); |
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116 | 47199 | jjdelcerro | } |
117 | |||
118 | @Override
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119 | 45727 | jjdelcerro | protected boolean internalHasNext() { |
120 | 47199 | jjdelcerro | if( this.spatialIndexIt != null ) { |
121 | return this.spatialIndexIt.hasNext(); |
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122 | } |
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123 | 45727 | jjdelcerro | return this.count > index; |
124 | } |
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125 | 40435 | jjdelcerro | |
126 | 45727 | jjdelcerro | @Override
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127 | protected FeatureProvider internalNext() {
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128 | 47634 | fdiaz | SimpleReaderFeatureProvider data = new SimpleReaderFeatureProvider(getStore(), type);
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129 | 47199 | jjdelcerro | if( this.spatialIndexIt != null ) { |
130 | Object oid = this.spatialIndexIt.next(); |
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131 | data.setOID(oid); |
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132 | } else {
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133 | if (index >= this.count) { |
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134 | throw new NoSuchElementException(); |
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135 | } |
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136 | data.setOID(index++); |
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137 | } |
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138 | 45727 | jjdelcerro | return data;
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139 | } |
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140 | 40435 | jjdelcerro | |
141 | 45727 | jjdelcerro | @Override
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142 | public void remove() { |
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143 | throw new UnsupportedOperationException(); |
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144 | } |
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145 | 40435 | jjdelcerro | |
146 | 45727 | jjdelcerro | protected void internalDispose() { |
147 | type = null;
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148 | } |
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149 | 40435 | jjdelcerro | |
150 | 45727 | jjdelcerro | @Override
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151 | protected void doDispose() throws BaseException { |
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152 | // Nothing to do
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153 | } |
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154 | } |
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155 | 40435 | jjdelcerro | |
156 | 47634 | fdiaz | private class FastCSVIterator extends SimpleReaderIterator { |
157 | 40435 | jjdelcerro | |
158 | 45727 | jjdelcerro | protected FeatureProvider data;
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159 | 40435 | jjdelcerro | |
160 | 47634 | fdiaz | public FastCSVIterator(SimpleReaderStoreProvider store, FeatureQuery query, FeatureType type,
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161 | 45727 | jjdelcerro | long startOn) throws DataException { |
162 | 47199 | jjdelcerro | super(store, query, type, startOn);
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163 | 47634 | fdiaz | this.data = new SimpleReaderFeatureProvider(store, type); |
164 | 45727 | jjdelcerro | } |
165 | 40435 | jjdelcerro | |
166 | 45727 | jjdelcerro | @Override
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167 | protected FeatureProvider internalNext() {
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168 | 47199 | jjdelcerro | if( this.spatialIndexIt != null ) { |
169 | Object oid = this.spatialIndexIt.next(); |
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170 | data.setOID(oid); |
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171 | } else {
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172 | if (index >= this.count) { |
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173 | throw new NoSuchElementException(); |
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174 | } |
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175 | data.setOID(index++); |
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176 | } |
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177 | return data;
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178 | 45727 | jjdelcerro | } |
179 | 40435 | jjdelcerro | |
180 | 45727 | jjdelcerro | @Override
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181 | protected void internalDispose() { |
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182 | super.internalDispose();
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183 | data = null;
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184 | } |
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185 | } |
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186 | 40435 | jjdelcerro | |
187 | 47634 | fdiaz | public SimpleReaderSetProvider(SimpleReaderStoreProvider store, FeatureQuery query,
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188 | 47557 | fdiaz | FeatureType providerFeatureType, FeatureType featureType) |
189 | 45727 | jjdelcerro | throws DataException {
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190 | 47557 | fdiaz | super(store, query, providerFeatureType, featureType);
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191 | 45727 | jjdelcerro | } |
192 | 40435 | jjdelcerro | |
193 | 45727 | jjdelcerro | @Override
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194 | 47634 | fdiaz | protected SimpleReaderStoreProvider getStore() {
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195 | return (SimpleReaderStoreProvider) super.getStore(); |
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196 | 45727 | jjdelcerro | } |
197 | 40435 | jjdelcerro | |
198 | 47665 | fdiaz | @Override
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199 | protected SpatialIndex getSpatialIndex(String name) { |
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200 | return getStore().getSpatialIndex(name);
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201 | } |
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202 | |||
203 | 45727 | jjdelcerro | protected String getStoreFullName() { |
204 | try {
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205 | return this.getStore().getFullName(); |
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206 | } catch (Throwable th) { |
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207 | return "unknown"; |
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208 | } |
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209 | } |
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210 | |||
211 | @Override
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212 | public boolean canFilter() { |
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213 | return false; |
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214 | } |
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215 | |||
216 | @Override
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217 | public boolean canIterateFromIndex() { |
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218 | return true; |
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219 | } |
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220 | |||
221 | @Override
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222 | public boolean canOrder() { |
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223 | return false; |
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224 | } |
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225 | |||
226 | @Override
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227 | public long getSize() throws DataException { |
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228 | return getStore().getFeatureCount();
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229 | } |
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230 | |||
231 | @Override
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232 | public boolean isEmpty() throws DataException { |
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233 | return getSize() == 0; |
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234 | } |
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235 | |||
236 | @Override
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237 | protected void doDispose() throws BaseException { |
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238 | } |
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239 | |||
240 | @Override
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241 | protected AbstractFeatureProviderIterator createIterator(long index) |
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242 | throws DataException {
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243 | 47634 | fdiaz | return new SimpleReaderIterator( |
244 | 45727 | jjdelcerro | getStore(), |
245 | 47199 | jjdelcerro | getQuery(), |
246 | 47436 | fdiaz | getProviderFeatureType(), |
247 | 45727 | jjdelcerro | index |
248 | ); |
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249 | } |
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250 | |||
251 | @Override
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252 | protected AbstractFeatureProviderIterator createFastIterator(long index) |
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253 | throws DataException {
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254 | return new FastCSVIterator( |
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255 | getStore(), |
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256 | 47199 | jjdelcerro | getQuery(), |
257 | 47436 | fdiaz | getProviderFeatureType(), |
258 | 45727 | jjdelcerro | index |
259 | ); |
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260 | } |
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261 | 40767 | jjdelcerro | } |