Mercurial > dive4elements > gnv-client

annotate geo-backend/src/main/java/de/intevation/gnv/geobackend/sde/datasources/SDEQuery.java @ 129:110e3ac1b7d2

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Library Dependencies Added to pom.xml-File Import of SDE-Datasources geo-backend/trunk@5 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Tim Englich <tim.englich@intevation.de>
date Wed, 02 Sep 2009 09:07:03 +0000
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children e4eacd613356
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110e3ac1b7d2 Library Dependencies Added to pom.xml-File
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1 /**
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2 * Title: SdeQuery, $Header: /share/gdi/SDI-Suite/Repository/projekte/BSH-GDI/genericViewer/src/main/java/de/conterra/bsh/gdi/gnviewer/datasources/sde/SDEQuery.java,v 1.3 2008/01/30 12:38:34 blume Exp $
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3 * Source: $Source: /share/gdi/SDI-Suite/Repository/projekte/BSH-GDI/genericViewer/src/main/java/de/conterra/bsh/gdi/gnviewer/datasources/sde/SDEQuery.java,v $
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4 * created by: Stefan Blume (blume)
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5 * erstellt am: 21.11.2007
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6 * Copyright: con terra GmbH, 2005
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7 *
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8 * modified by: $Author: blume $
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9 * modified on: $Date: 2008/01/30 12:38:34 $
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10 * Version: $Revision: 1.3 $
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11 * TAG: $Name: $
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12 * locked from: $Locker: $
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13 * CVS State: $State: Exp $
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14 * Project: $ProjectName$
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15 */
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16 package de.intevation.gnv.geobackend.sde.datasources;
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17
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18 import org.apache.log4j.Logger;
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19
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20 import com.esri.sde.sdk.client.SDEPoint;
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21 import com.esri.sde.sdk.client.SeColumnDefinition;
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22 import com.esri.sde.sdk.client.SeConnection;
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23 import com.esri.sde.sdk.client.SeCoordinateReference;
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24 import com.esri.sde.sdk.client.SeException;
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25 import com.esri.sde.sdk.client.SeFilter;
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26 import com.esri.sde.sdk.client.SeLayer;
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27 import com.esri.sde.sdk.client.SeQuery;
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28 import com.esri.sde.sdk.client.SeRow;
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29 import com.esri.sde.sdk.client.SeShape;
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30 import com.esri.sde.sdk.client.SeShapeFilter;
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31 import com.esri.sde.sdk.client.SeSqlConstruct;
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32
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33 import de.intevation.gnv.geobackend.sde.datasources.exception.TechnicalException;
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34 import de.intevation.gnv.geobackend.util.DateUtils;
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35
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36 /**
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37 * // todo: supply a general interface for Query-Objects (Query = read access to datasource implementation)
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38 *
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39 * @author blume
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40 * @version 1.0
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41 * @serial 1.0
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42 * @see
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43 * @since 21.11.2007 11:32:19
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44 */
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45 public class SDEQuery {
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46
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47 /**
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48 * Default Logging instance
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49 */
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50 private static final Logger sLogger = Logger.getLogger(SDEQuery.class);
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51 private static boolean sDebug = sLogger.isDebugEnabled();
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52
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53
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54 DatasourceConnection mConnection;
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55
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56 public SDEQuery(DatasourceConnection pConnection) {
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57 if (sDebug) sLogger.debug("SDEQuery()");
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58 mConnection = pConnection;
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59 }
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60
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61 /**
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62 * Execute a query against a sde datasource.
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63 * This Query method is responsible for getting and returning a valid {@link SeConnection}-Object.
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64 *
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65 * @param pTables
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66 * @param pCols
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67 * @param pWhere the where-clause to be executed.
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68 * @return a ResultSet
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69 * @see SeSqlConstruct
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70 * @see SeQuery
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71 */
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72 public ResultSet executeQuery(String pTables[], String pCols[], String pWhere) throws TechnicalException {
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73 sLogger.debug("executeQuery()");
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74 SeConnection con = null;
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75 try {
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76 con = getConnection();
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77 SeSqlConstruct lSeSqlConstruct = new SeSqlConstruct(pTables, pWhere);
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78 SeQuery lSeQuery = new SeQuery(con, pCols, lSeSqlConstruct);
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79 long lStart = System.currentTimeMillis();
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80 lSeQuery.prepareQuery();
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81 ResultSet lSet = handleResultSet(lSeQuery);
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82 long lEnd = System.currentTimeMillis();
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83 if (sDebug)
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84 sLogger.debug((new StringBuilder()).append("lSeQuery lasts ").append((double) (lEnd - lStart) / 1000D).append(" seconds").toString());
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85 return lSet;
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86 } catch (TechnicalException e) {
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87 sLogger.error(e.getMessage(), e);
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88 throw e;
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89 } catch (SeException e) {
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90 sLogger.error(e.getMessage(), e);
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91 throw new TechnicalException("Error during executeQuery", e);
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92 } finally {
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93 returnConnection(con);
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94 }
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95
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96 }
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97
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98 /**
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99 * Execute a query against a sde datasource.
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100 * This Query method is responsible for getting and returning a valid {@link SeConnection}-Object.
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101 *
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102 * @param pSQLStatement the SQL-Statement to be executed.
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103 * @return a ResultSet
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104 * @see SeQuery
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105 */
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106 public ResultSet executeQuery(String pSQLStatement) throws TechnicalException {
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107 if (sDebug) sLogger.debug("executeQuery():\n" + pSQLStatement);
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108 SeConnection con = null;
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109 try {
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110 con = getConnection();
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111
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112 SeQuery lSeQuery = new SeQuery(con);
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113 long lStart = System.currentTimeMillis();
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114 lSeQuery.prepareSql(pSQLStatement);
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115 lSeQuery.execute();
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116
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117 ResultSet lSet = handleResultSet(lSeQuery);
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118
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119 //TmpFile erstellen
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120 //Row auslesen
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121 //Row -> TmpFile
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122 //TmpFile close
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123
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124 long lEnd = System.currentTimeMillis();
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125 if (sDebug)
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126 sLogger.debug((new StringBuilder()).append("lSeQuery lasts ").append((double) (lEnd - lStart) / 1000D).append(" seconds").toString());
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127 return lSet;
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128 } catch (TechnicalException e) {
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129 sLogger.error(e.getMessage(), e);
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130 throw e;
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131 } catch (SeException e) {
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132 sLogger.error(e.getMessage(), e);
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133 throw new TechnicalException("Error during executeQuery", e);
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134 } finally {
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135 returnConnection(con);
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136 }
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137
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138
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139 }
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140
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141 // /**
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142 // * Execute a query against a sde datasource.
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143 // * This Query method is responsible for getting and returning a valid {@link SeConnection}-Object.
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144 // *
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145 // * @param pSQLStatement the SQL-Statement to be executed.
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146 // * @return File
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147 // * @see SeQuery
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148 // */
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149 // public TempFile executeQueryDiagram (String pSQLStatement) throws TechnicalException {
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150 // if (sDebug) sLogger.debug("executeQueryDiagram():\n" + pSQLStatement);
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151 // SeConnection con = null;
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152 // TempFile lImageFile = null;
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153 // try {
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154 // con = getConnection();
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155 //
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156 // SeQuery lSeQuery = new SeQuery(con);
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157 // long lStart = System.currentTimeMillis();
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158 // lSeQuery.prepareSql(pSQLStatement);
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159 // lSeQuery.execute();
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160 //
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161 // //ResultSet lSet = handleResultSet(lSeQuery);
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162 // lImageFile = handleRowToCSVFile(lSeQuery);
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163 //
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164 //
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165 // long lEnd = System.currentTimeMillis();
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166 // if (sDebug)
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167 // sLogger.debug((new StringBuilder()).append("lSeQuery lasts ").append((double) (lEnd - lStart) / 1000D).append(" seconds").toString());
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168 //
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169 // } catch (TechnicalException e) {
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170 // sLogger.error(e.getMessage(), e);
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171 // throw e;
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172 // } catch (SeException e) {
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173 // sLogger.error(e.getMessage(), e);
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174 // throw new TechnicalException("Error during executeQuery", e);
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175 // } finally {
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176 // returnConnection(con);
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177 // }
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178 // return lImageFile;
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179 //
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180 // }
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181
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182 /**
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183 * Execute a spatial query against a sde datasource.
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184 * This Query method is responsible for getting and returning a valid {@link SeConnection}-Object.
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185 * // todo: there is work needed to fully implement the wanted functionality.
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186 *
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187 * @param pLayername
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188 * @param pSpatialColumnName
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189 * @param pPoints
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190 * @param pReturnFields
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191 * @return a ResultSet
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192 * @see SeShapeFilter
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193 * @see SeQuery
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194 */
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195 public ResultSet executeQuery(String pLayername, String pSpatialColumnName, double[][] pPoints, String[] pReturnFields) throws TechnicalException {
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196 sLogger.debug("executeQuery()");
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197 SeConnection con = null;
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198 try {
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199 con = getConnection();
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200 // get the layer for querying
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201 SeLayer lLayer = new SeLayer(con, pLayername, pSpatialColumnName);
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202 SeCoordinateReference cref = lLayer.getCoordRef();
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203
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204
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205 SeShape shape = new SeShape();
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206 shape.setCoordRef(lLayer.getCoordRef());
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207 SDEPoint[] lPoints = ArcSDEUtils.createPoints(pPoints);
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208
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209 /*
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210 * int�numPts, int�numParts, int[]�partOffsets,SDEPoint[]�ptArray
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211 * */
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212 shape.generatePolygon(lPoints.length, 1, null, lPoints);
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213 SeShapeFilter filter = new SeShapeFilter(pLayername, pSpatialColumnName, shape, SeFilter.METHOD_AI);
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214 SeShapeFilter[] filters = new SeShapeFilter[1];
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215 filters[0] = filter;
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216
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217 SeQuery spatialQuery = null;
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218 SeSqlConstruct sqlCons = new SeSqlConstruct(pLayername);
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219 spatialQuery = new SeQuery(con, pReturnFields, sqlCons);
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220 spatialQuery.prepareQuery();
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221 /*
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222 * Set spatial constraints
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223 */
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224 spatialQuery.setSpatialConstraints(SeQuery.SE_OPTIMIZE, false, filters);
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225 spatialQuery.execute();
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226
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227 return handleResultSet(spatialQuery);
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228
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229 } catch (TechnicalException e) {
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230 sLogger.error(e.getMessage(), e);
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231 throw e;
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232 } catch (SeException e) {
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233 sLogger.error(e.getMessage(), e);
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234 throw new TechnicalException("Error accessing Spatial Database: " + e.getMessage(), e);
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235 } finally {
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236 returnConnection(con);
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237 }
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238 }
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239 /**
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240 * Execute a spatial query against a sde datasource.
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241 * This Query method is responsible for getting and returning a valid {@link SeConnection}-Object.
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242 * // todo: there is work needed to fully implement the wanted functionality.
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243 *
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244 * @param pLayername
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245 * @param pSpatialColumnName
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246 * @param pPoints
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247 * @param pReturnFields
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248 * @return a ResultSet
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249 * @see SeShapeFilter
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250 * @see SeQuery
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251 */
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252 public ResultSet executeQuery(String pLayername, String pSpatialColumnName, String pWhere, double[][] pPoints, String[] pReturnFields) throws TechnicalException {
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253 sLogger.debug("executeQuery()");
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254 SeConnection con = null;
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255 try {
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256 con = getConnection();
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257 // get the layer for querying
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258 SeLayer lLayer = new SeLayer(con, pLayername, pSpatialColumnName);
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259 SeCoordinateReference cref = lLayer.getCoordRef();
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260
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261
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262 SeShape shape = new SeShape();
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263 shape.setCoordRef(lLayer.getCoordRef());
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264 SDEPoint[] lPoints = ArcSDEUtils.createPoints(pPoints);
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265
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266 /*
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267 * int�numPts, int�numParts, int[]�partOffsets,SDEPoint[]�ptArray
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268 * */
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269 shape.generatePolygon(lPoints.length, 1, null, lPoints);
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270 SeShapeFilter filter = new SeShapeFilter(pLayername, pSpatialColumnName, shape, SeFilter.METHOD_AI);
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271 SeShapeFilter[] filters = new SeShapeFilter[1];
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272 filters[0] = filter;
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273
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274 SeQuery spatialQuery = null;
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275 SeSqlConstruct sqlCons = new SeSqlConstruct(pLayername,pWhere);
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276 spatialQuery = new SeQuery(con, pReturnFields, sqlCons);
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277 spatialQuery.prepareQuery();
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278 /*
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279 * Set spatial constraints
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280 */
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281 spatialQuery.setSpatialConstraints(SeQuery.SE_OPTIMIZE, false, filters);
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282 spatialQuery.execute();
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283
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284 return handleResultSet(spatialQuery);
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285
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286 } catch (TechnicalException e) {
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287 sLogger.error(e.getMessage(), e);
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288 throw e;
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289 } catch (SeException e) {
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290 sLogger.error(e.getMessage(), e);
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291 throw new TechnicalException("Error accessing Spatial Database: " + e.getMessage(), e);
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292 } finally {
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293 returnConnection(con);
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294 }
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295 }
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296 private SeConnection getConnection() throws TechnicalException {
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297 SeConnection lConnection = ((SDEConnection) mConnection).getConnection();
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298 if (sDebug) try {
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299 sLogger.debug("get connection to server: " + lConnection.getServer() + ", ServerTime: " + DateUtils.getPatternedDateAmer(lConnection.getServerTime()) + ", Release: " + lConnection.getRelease().getDesc());
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300 } catch (SeException e) {
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301 sLogger.error(e.getMessage(), e);
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302 }
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303 return lConnection;
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304 }
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305
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306 private void returnConnection(SeConnection pSeConnection) {
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307 ((SDEConnection) mConnection).returnConnection(pSeConnection);
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308 }
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309
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310
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311 private ResultSet handleResultSet(SeQuery pSeQuery) throws SeException {
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312 sLogger.debug("handleResultSet()");
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313 SDEResultSet lSet = new SDEResultSet();
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314 SeRow row;
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315 int lCount;
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316 for (lCount = 0; (row = pSeQuery.fetch()) != null; lCount++) {
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317 // one time execution
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318 if (lCount == 0) {
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319 // analyze cols of result set
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320 SeColumnDefinition[] lCols = row.getColumns();
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321 for (SeColumnDefinition lCol : lCols) {
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322 lSet.addCol(new ColDefinition(lCol.getName(), lCol.getType()));// notice: esri-types have been copied into colDefinition class!
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323 }
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324 }
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325 short lNumCols = row.getNumColumns();
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326 Row lBackingRow = new Row(lNumCols);
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327 for (int i = 0; i < lNumCols; i++) {
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328 lBackingRow.addObject(row.getObject(i), i);
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329 }
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330 lSet.addRow(lBackingRow);
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331 }
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332 pSeQuery.close();
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333 return lSet;
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334 }
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335
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336 // private TempFile handleRowToCSVFile(SeQuery pSeQuery) throws SeException {
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337 // sLogger.debug("handleRowToTempFile()");
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338 // TempFile lImageFile = TemporaryFileDirectory.getInstance().createFile(".csv");
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339 // sLogger.debug("handleRowToTempFile() erstellen " + lImageFile.getFile().getName());
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340 // CSVWriter writer = null;
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341 // ColDefinition[] lColDefinitions = null;
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342 //
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343 // SeRow row;
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344 // int lCount;
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345 // try {
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346 // writer = new CSVWriter(new FileWriter(lImageFile.getFile()), ';');
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347 // for (lCount = 0; (row = pSeQuery.fetch()) != null; lCount++) {
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348 // // one time execution
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349 // if (lCount == 0) {
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350 // lColDefinitions = new ColDefinition[row.getNumColumns()];
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351 // // analyze cols of result set
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352 // SeColumnDefinition[] lCols = row.getColumns();
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353 // int j = 0;
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354 // for (SeColumnDefinition lCol : lCols) {
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355 // lColDefinitions[j] = new ColDefinition(lCol.getName(), lCol.getType());
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356 // j = j + 1;
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357 // }
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358 // }
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359 // short lNumCols = row.getNumColumns();
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360 // Row lBackingRow = new Row(lNumCols);
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361 // for (int i = 0; i < lNumCols; i++) {
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362 // lBackingRow.addObject(row.getObject(i), i);
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363 // }
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364 //
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365 // writer.writeRow(lBackingRow,lColDefinitions, false);
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366 // }
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367 // } catch (IOException e) {
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368 // sLogger.error(e.getMessage(), e);
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369 // } catch (TechnicalException e) {
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370 // sLogger.error(e.getMessage(), e);
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371 // }
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372 // finally {
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373 // pSeQuery.close();
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374 // try{
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375 // writer.close();
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376 // }
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377 // catch (Exception e){
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378 // sLogger.error(e.getMessage(), e);
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379 // }
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380 // }
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381 //
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382 // return lImageFile;
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383 // }
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384
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385 }
http://dive4elements.wald.intevation.org