svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.db / org.gvsig.fmap.dal.db.jdbc / src / main / java / org / gvsig / fmap / dal / store / jdbc2 / spi / JDBCResourcesStorage.java @ 45652
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1 | 45065 | jjdelcerro | /**
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2 | * gvSIG. Desktop Geographic Information System.
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3 | *
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4 | * Copyright (C) 2007-2020 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 | 44297 | jjdelcerro | package org.gvsig.fmap.dal.store.jdbc2.spi; |
25 | |||
26 | import java.io.ByteArrayInputStream; |
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27 | import java.io.ByteArrayOutputStream; |
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28 | 44750 | jjdelcerro | import java.io.File; |
29 | import java.io.FileInputStream; |
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30 | import java.io.FileNotFoundException; |
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31 | import java.io.FileOutputStream; |
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32 | 44297 | jjdelcerro | import java.io.IOException; |
33 | import java.io.InputStream; |
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34 | import java.io.OutputStream; |
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35 | import java.net.URL; |
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36 | import java.util.ArrayList; |
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37 | import java.util.List; |
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38 | 44750 | jjdelcerro | import org.apache.commons.codec.digest.DigestUtils; |
39 | import org.apache.commons.io.FileUtils; |
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40 | 44297 | jjdelcerro | import org.apache.commons.io.IOUtils; |
41 | import org.apache.commons.lang3.StringUtils; |
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42 | 44750 | jjdelcerro | import org.apache.commons.lang3.tuple.ImmutablePair; |
43 | import org.apache.commons.lang3.tuple.Pair; |
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44 | 44297 | jjdelcerro | import org.gvsig.expressionevaluator.ExpressionBuilder; |
45 | import org.gvsig.expressionevaluator.ExpressionUtils; |
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46 | import org.gvsig.fmap.dal.DALLocator; |
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47 | import org.gvsig.fmap.dal.DataManager; |
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48 | 44304 | jjdelcerro | import static org.gvsig.fmap.dal.DatabaseWorkspaceManager.FIELD_RESOURCES_NAME; |
49 | import static org.gvsig.fmap.dal.DatabaseWorkspaceManager.FIELD_RESOURCES_RESOURCE; |
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50 | import static org.gvsig.fmap.dal.DatabaseWorkspaceManager.TABLE_RESOURCES_NAME; |
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51 | 44297 | jjdelcerro | import org.gvsig.fmap.dal.feature.EditableFeature; |
52 | import org.gvsig.fmap.dal.feature.Feature; |
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53 | import org.gvsig.fmap.dal.feature.FeatureStore; |
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54 | import org.gvsig.fmap.dal.store.jdbc.JDBCStoreParameters; |
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55 | 44750 | jjdelcerro | import org.gvsig.tools.ToolsLocator; |
56 | 44297 | jjdelcerro | import org.gvsig.tools.dispose.DisposeUtils; |
57 | 44750 | jjdelcerro | import org.gvsig.tools.folders.FoldersManager; |
58 | 44297 | jjdelcerro | import org.gvsig.tools.resourcesstorage.AbstractResourcesStorage; |
59 | import org.gvsig.tools.resourcesstorage.ResourcesStorage; |
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60 | import org.slf4j.Logger; |
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61 | import org.slf4j.LoggerFactory; |
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62 | |||
63 | /**
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64 | *
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65 | * @author jjdelcerro
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66 | */
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67 | @SuppressWarnings("UseSpecificCatch") |
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68 | public class JDBCResourcesStorage extends AbstractResourcesStorage { |
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69 | |||
70 | private static final Logger LOGGER = LoggerFactory.getLogger(JDBCResourcesStorage.class); |
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71 | |||
72 | private static class DataBaseResource implements Resource { |
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73 | |||
74 | private class ResourceInputStream extends InputStream { |
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75 | |||
76 | @Override
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77 | public int read() throws IOException { |
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78 | return in.read();
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79 | } |
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80 | |||
81 | @Override
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82 | public void close() throws IOException { |
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83 | DataBaseResource.this.close(); |
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84 | } |
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85 | } |
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86 | |||
87 | private class ResourceOutputStream extends OutputStream { |
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88 | |||
89 | @Override
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90 | public void write(int b) throws IOException { |
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91 | out.write(b); |
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92 | } |
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93 | |||
94 | @Override
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95 | public void flush() throws IOException { |
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96 | out.flush(); |
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97 | } |
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98 | |||
99 | @Override
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100 | public void close() throws IOException { |
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101 | DataBaseResource.this.close(); |
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102 | } |
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103 | } |
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104 | |||
105 | private final JDBCStoreParameters storeParameters; |
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106 | private final String tableName; |
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107 | private final String name; |
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108 | |||
109 | 44750 | jjdelcerro | private InputStream in; |
110 | 44297 | jjdelcerro | private ByteArrayOutputStream out; |
111 | |||
112 | public DataBaseResource(JDBCStoreParameters storeParameters, String tableName, String name) { |
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113 | this.storeParameters = storeParameters;
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114 | this.tableName = tableName;
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115 | this.name = name;
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116 | } |
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117 | |||
118 | 44750 | jjdelcerro | @Override
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119 | 44698 | jjdelcerro | public String getName() { |
120 | return name;
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121 | } |
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122 | |||
123 | 44297 | jjdelcerro | @Override
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124 | public boolean isReadOnly() { |
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125 | return false; |
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126 | } |
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127 | @Override
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128 | public URL getURL() { |
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129 | try {
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130 | String url = this.storeParameters.getUrl(); |
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131 | return new URL(url + "&tableName=" + this.tableName + "&resourceName=" + this.name); |
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132 | } catch (Throwable ex) { |
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133 | return null; |
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134 | } |
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135 | } |
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136 | |||
137 | @Override
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138 | public boolean exists() { |
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139 | FeatureStore store = null;
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140 | try {
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141 | 44750 | jjdelcerro | FoldersManager fm = ToolsLocator.getFoldersManager(); |
142 | Pair<String, String> key = this.getCacheID(); |
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143 | File f = fm.getTemporaryFile("resources-storage","jdbc", key.getLeft(), key.getRight()); |
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144 | if( f.exists() ) {
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145 | return true; |
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146 | } |
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147 | 44297 | jjdelcerro | DataManager dataManager = DALLocator.getDataManager(); |
148 | store = (FeatureStore) dataManager.openStore( |
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149 | this.storeParameters.getDataStoreName(),
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150 | this.storeParameters
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151 | ); |
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152 | ExpressionBuilder builder = ExpressionUtils.createExpressionBuilder(); |
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153 | String filter = builder.eq(
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154 | 44304 | jjdelcerro | builder.column(FIELD_RESOURCES_NAME), |
155 | 44346 | jjdelcerro | builder.constant(this.tableName+"."+this.name) |
156 | 44297 | jjdelcerro | ).toString(); |
157 | Feature feature = store.findFirst(filter); |
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158 | return feature!=null; |
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159 | } catch (Throwable ex) { |
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160 | LOGGER.warn("Can't access to the resoure '" + this.getURL() + "'.", ex); |
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161 | } finally {
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162 | DisposeUtils.disposeQuietly(store); |
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163 | } |
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164 | return false; |
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165 | } |
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166 | |||
167 | 45152 | fdiaz | public boolean remove() { |
168 | FeatureStore store = null;
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169 | try {
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170 | FoldersManager fm = ToolsLocator.getFoldersManager(); |
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171 | Pair<String, String> key = this.getCacheID(); |
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172 | File f = fm.getTemporaryFile("resources-storage","jdbc", key.getLeft(), key.getRight()); |
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173 | if( f.exists() ) {
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174 | f.delete(); |
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175 | } |
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176 | DataManager dataManager = DALLocator.getDataManager(); |
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177 | store = (FeatureStore) dataManager.openStore( |
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178 | this.storeParameters.getDataStoreName(),
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179 | this.storeParameters
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180 | ); |
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181 | ExpressionBuilder builder = ExpressionUtils.createExpressionBuilder(); |
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182 | String filter = builder.eq(
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183 | builder.column(FIELD_RESOURCES_NAME), |
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184 | builder.constant(this.tableName+"."+this.name) |
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185 | ).toString(); |
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186 | Feature feature = store.findFirst(filter); |
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187 | if(feature != null){ |
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188 | store.edit(); |
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189 | store.delete(feature); |
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190 | store.finishEditing(); |
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191 | return true; |
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192 | } |
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193 | return false; |
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194 | } catch (Throwable ex) { |
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195 | 45442 | jjdelcerro | FeatureStore.cancelEditingQuietly(store); |
196 | 45152 | fdiaz | LOGGER.warn("Can't access to the resoure '" + this.getURL() + "'.", ex); |
197 | } finally {
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198 | DisposeUtils.disposeQuietly(store); |
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199 | } |
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200 | return false; |
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201 | } |
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202 | |||
203 | 44750 | jjdelcerro | private Pair<String,String> getCacheID() { |
204 | byte[] data = this.storeParameters.toByteArray(); |
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205 | ImmutablePair<String, String> r = new ImmutablePair<>( |
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206 | DigestUtils.md5Hex(data), |
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207 | this.tableName+"."+this.name |
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208 | ); |
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209 | return r;
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210 | } |
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211 | |||
212 | 45154 | jjdelcerro | private boolean removeCache() { |
213 | FoldersManager fm = ToolsLocator.getFoldersManager(); |
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214 | Pair<String, String> key = this.getCacheID(); |
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215 | File f = fm.getTemporaryFile("resources-storage","jdbc", key.getLeft(), key.getRight()); |
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216 | if( f.exists() ) {
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217 | try {
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218 | FileUtils.forceDelete(f); |
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219 | } catch (IOException ex) { |
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220 | return false; |
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221 | } |
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222 | } |
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223 | return true; |
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224 | } |
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225 | |||
226 | 44750 | jjdelcerro | private InputStream getInputStreamFromCache() { |
227 | FoldersManager fm = ToolsLocator.getFoldersManager(); |
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228 | Pair<String, String> key = this.getCacheID(); |
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229 | File f = fm.getTemporaryFile("resources-storage","jdbc", key.getLeft(), key.getRight()); |
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230 | if( !f.exists() ) {
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231 | InputStream is = null; |
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232 | FileOutputStream os = null; |
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233 | 45338 | omartinez | File f2 = null; |
234 | 44750 | jjdelcerro | try {
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235 | is = this.getInputStream();
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236 | 45338 | omartinez | if (is==null) { |
237 | return null; |
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238 | } |
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239 | 44750 | jjdelcerro | FileUtils.forceMkdir(f.getParentFile()); |
240 | os = new FileOutputStream(f); |
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241 | IOUtils.copy(is, os); |
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242 | |||
243 | 45338 | omartinez | f2 = fm.getTemporaryFile("resources-storage","jdbc", key.getLeft(), "parameters"); |
244 | 44750 | jjdelcerro | byte[] data = this.storeParameters.toByteArray(); |
245 | os = new FileOutputStream(f2); |
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246 | IOUtils.write(data, os); |
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247 | } catch (IOException ex) { |
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248 | 45338 | omartinez | FileUtils.deleteQuietly(f); |
249 | FileUtils.deleteQuietly(f2); |
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250 | 44750 | jjdelcerro | return null; |
251 | } finally {
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252 | IOUtils.closeQuietly(is); |
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253 | IOUtils.closeQuietly(os); |
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254 | 44297 | jjdelcerro | } |
255 | 44750 | jjdelcerro | } |
256 | InputStream is = null; |
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257 | try {
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258 | is = new FileInputStream(f); |
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259 | } catch (FileNotFoundException ex) { |
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260 | } |
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261 | return is;
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262 | } |
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263 | |||
264 | private InputStream getInputStream() throws IOException { |
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265 | 44297 | jjdelcerro | FeatureStore store = null;
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266 | try {
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267 | DataManager dataManager = DALLocator.getDataManager(); |
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268 | store = (FeatureStore) dataManager.openStore( |
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269 | this.storeParameters.getDataStoreName(),
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270 | this.storeParameters
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271 | ); |
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272 | ExpressionBuilder builder = ExpressionUtils.createExpressionBuilder(); |
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273 | String filter = builder.eq(
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274 | 44304 | jjdelcerro | builder.column(FIELD_RESOURCES_NAME), |
275 | 44346 | jjdelcerro | builder.constant(this.tableName+"."+this.name) |
276 | 44297 | jjdelcerro | ).toString(); |
277 | Feature feature = store.findFirst(filter); |
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278 | if (feature == null) { |
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279 | return null; |
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280 | } |
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281 | 44304 | jjdelcerro | byte[] resource = feature.getByteArray(FIELD_RESOURCES_RESOURCE); |
282 | 44750 | jjdelcerro | InputStream is = new ByteArrayInputStream(resource); |
283 | return is;
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284 | 44297 | jjdelcerro | } catch (Throwable ex) { |
285 | LOGGER.warn("Can't access to the resoure '" + this.getURL() + "'.", ex); |
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286 | } finally {
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287 | DisposeUtils.disposeQuietly(store); |
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288 | } |
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289 | return null; |
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290 | } |
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291 | |||
292 | @Override
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293 | 44750 | jjdelcerro | public InputStream asInputStream() throws IOException { |
294 | if (this.in != null || this.out != null) { |
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295 | throw new IllegalStateException("Resource is already open (" + this.getURL() + ")"); |
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296 | } |
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297 | InputStream is = this.getInputStreamFromCache(); |
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298 | if( is==null ) { |
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299 | 45338 | omartinez | is = this.getInputStream();
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300 | if ( is==null) { |
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301 | return null; |
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302 | } |
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303 | 44750 | jjdelcerro | } |
304 | this.in = is;
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305 | return new ResourceInputStream(); |
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306 | } |
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307 | |||
308 | @Override
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309 | 44297 | jjdelcerro | public OutputStream asOutputStream() throws IOException { |
310 | if (this.in != null || this.out != null) { |
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311 | throw new IllegalStateException("Resource is already open (" + this.getURL() + ")."); |
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312 | } |
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313 | this.out = new ByteArrayOutputStream(); |
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314 | return new ResourceOutputStream(); |
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315 | } |
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316 | |||
317 | @Override
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318 | public void close() { |
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319 | if (this.in != null) { |
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320 | IOUtils.closeQuietly(this.in);
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321 | this.in = null; |
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322 | } |
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323 | if (this.out != null) { |
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324 | FeatureStore store = null;
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325 | try {
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326 | DataManager dataManager = DALLocator.getDataManager(); |
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327 | store = (FeatureStore) dataManager.openStore( |
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328 | this.storeParameters.getDataStoreName(),
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329 | this.storeParameters
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330 | ); |
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331 | store.edit(); |
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332 | ExpressionBuilder builder = ExpressionUtils.createExpressionBuilder(); |
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333 | String filter = builder.eq(
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334 | 44304 | jjdelcerro | builder.column(FIELD_RESOURCES_NAME), |
335 | 44346 | jjdelcerro | builder.constant(this.tableName+"."+this.name) |
336 | 44297 | jjdelcerro | ).toString(); |
337 | Feature feature = store.findFirst(filter); |
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338 | EditableFeature efeature; |
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339 | if (feature == null) { |
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340 | efeature = store.createNewFeature(); |
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341 | 44346 | jjdelcerro | efeature.set(FIELD_RESOURCES_NAME, this.tableName+"."+this.name); |
342 | 44304 | jjdelcerro | efeature.set(FIELD_RESOURCES_RESOURCE, this.out.toByteArray());
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343 | 44297 | jjdelcerro | store.insert(efeature); |
344 | } else {
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345 | efeature = feature.getEditable(); |
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346 | 44304 | jjdelcerro | efeature.set(FIELD_RESOURCES_RESOURCE, this.out.toByteArray());
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347 | 44297 | jjdelcerro | store.update(efeature); |
348 | } |
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349 | store.finishEditing(); |
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350 | 45154 | jjdelcerro | removeCache(); |
351 | 44297 | jjdelcerro | } catch (Throwable ex) { |
352 | 45442 | jjdelcerro | FeatureStore.cancelEditingQuietly(store); |
353 | 44297 | jjdelcerro | LOGGER.warn("Can't write the resoure '" + this.getURL() + "'.", ex); |
354 | } finally {
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355 | DisposeUtils.disposeQuietly(store); |
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356 | } |
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357 | } |
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358 | } |
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359 | } |
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360 | |||
361 | 44346 | jjdelcerro | private final ResourcesStorage alternativeStorge; |
362 | 44297 | jjdelcerro | private final JDBCStoreParameters resourcesStoreParameters; |
363 | private final String tableName; |
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364 | |||
365 | 44346 | jjdelcerro | public JDBCResourcesStorage(ResourcesStorage alternativeStorge, JDBCStoreParameters resourcesStoreParameters, String tableName) { |
366 | this.alternativeStorge = alternativeStorge;
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367 | 44304 | jjdelcerro | if( StringUtils.equals(TABLE_RESOURCES_NAME, tableName) ) {
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368 | 44297 | jjdelcerro | // No podemos buscar recursos de la tabla de recursos, ya que si no
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369 | // al abrise la tabla de recursos entraria en bucle.
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370 | this.resourcesStoreParameters = null; |
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371 | } else {
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372 | this.resourcesStoreParameters = resourcesStoreParameters;
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373 | } |
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374 | this.tableName = tableName;
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375 | } |
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376 | |||
377 | @Override
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378 | public boolean isEmpty() { |
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379 | return this.resourcesStoreParameters == null; |
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380 | } |
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381 | |||
382 | @Override
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383 | public Resource getResource(String name) { |
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384 | 44346 | jjdelcerro | if( this.alternativeStorge!=null ) { |
385 | Resource r = this.alternativeStorge.getResource(name);
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386 | if( r.exists() ) {
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387 | return r;
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388 | } |
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389 | } |
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390 | 44297 | jjdelcerro | if (this.resourcesStoreParameters == null) { |
391 | return null; |
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392 | } |
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393 | return new DataBaseResource( |
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394 | this.resourcesStoreParameters,
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395 | this.tableName,
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396 | name |
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397 | ); |
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398 | } |
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399 | |||
400 | @Override
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401 | public List<Resource> getResources(String name) { |
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402 | if (this.resourcesStoreParameters == null) { |
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403 | return null; |
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404 | } |
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405 | 44346 | jjdelcerro | if( this.alternativeStorge!=null ) { |
406 | List<Resource> r = this.alternativeStorge.getResources(name); |
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407 | if( r!=null && !r.isEmpty() ) { |
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408 | return r;
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409 | } |
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410 | } |
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411 | 44297 | jjdelcerro | FeatureStore store = null;
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412 | try {
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413 | DataManager dataManager = DALLocator.getDataManager(); |
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414 | store = (FeatureStore) dataManager.openStore( |
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415 | this.resourcesStoreParameters.getDataStoreName(),
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416 | this.resourcesStoreParameters
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417 | ); |
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418 | ExpressionBuilder builder = ExpressionUtils.createExpressionBuilder(); |
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419 | List<ResourcesStorage.Resource> ress = new ArrayList<>(); |
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420 | int n = 0; |
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421 | while (true) { |
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422 | String multiresourceName;
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423 | if (n == 0) { |
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424 | multiresourceName = name; |
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425 | } else {
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426 | 44346 | jjdelcerro | multiresourceName = String.valueOf(n) + "." + name ; |
427 | 44297 | jjdelcerro | } |
428 | String filter = builder.eq(
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429 | 44304 | jjdelcerro | builder.column(FIELD_RESOURCES_NAME), |
430 | 44346 | jjdelcerro | builder.constant(this.tableName+"."+multiresourceName) |
431 | 44297 | jjdelcerro | ).toString(); |
432 | Feature feature = store.findFirst(filter); |
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433 | if( feature==null ) { |
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434 | break;
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435 | } |
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436 | ress.add(new DataBaseResource(
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437 | this.resourcesStoreParameters,
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438 | this.tableName,
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439 | multiresourceName |
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440 | ) |
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441 | ); |
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442 | n++; |
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443 | } |
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444 | if (ress.isEmpty()) {
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445 | return null; |
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446 | } |
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447 | return ress;
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448 | } catch (Throwable ex) { |
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449 | LOGGER.warn("Can't get resources for '" + this.resourcesStoreParameters.getUrl()+"&resourceName="+name + "'.", ex); |
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450 | return null; |
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451 | |||
452 | } finally {
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453 | DisposeUtils.disposeQuietly(store); |
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454 | } |
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455 | |||
456 | } |
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457 | |||
458 | 45152 | fdiaz | @Override
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459 | public boolean remove(String resourceName) { |
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460 | if( this.alternativeStorge!=null ) { |
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461 | try {
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462 | this.alternativeStorge.remove(resourceName);
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463 | } catch (Exception e) { |
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464 | //Do nothing
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465 | } |
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466 | } |
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467 | if (this.resourcesStoreParameters == null) { |
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468 | return false; |
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469 | } |
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470 | DataBaseResource resource = new DataBaseResource(
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471 | this.resourcesStoreParameters,
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472 | this.tableName,
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473 | resourceName |
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474 | ); |
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475 | |||
476 | return resource.remove();
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477 | } |
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478 | 44297 | jjdelcerro | } |