Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/utils/InputValidator.java @ 820:8288f4a0d7e6

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Added more Javadoc. gnv-artifacts/trunk@906 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Tim Englich <tim.englich@intevation.de>
date Mon, 12 Apr 2010 13:23:18 +0000
parents 2cea76f1112e
children 05bf8534a35a
rev   line source
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1 package de.intevation.gnv.utils;
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2
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3 import com.vividsolutions.jts.geom.Coordinate;
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4 import com.vividsolutions.jts.geom.GeometryFactory;
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5 import com.vividsolutions.jts.geom.Point;
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6
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7 import com.vividsolutions.jts.io.ParseException;
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8 import com.vividsolutions.jts.io.WKTReader;
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9
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10 import de.intevation.gnv.geobackend.util.DateUtils;
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12 import de.intevation.gnv.utils.exception.ValidationException;
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14 import java.util.Date;
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15
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16 import org.apache.commons.validator.GenericValidator;
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18 import org.apache.log4j.Logger;
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19
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20 /**
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21 * @author <a href="mailto:tim.englich@intevation.de">Tim Englich</a>
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22 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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23 *
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24 */
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25 public class InputValidator {
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26 /**
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27 * the logger, used to log exceptions and additonaly information
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28 */
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29 private static Logger log = Logger.getLogger(InputValidator.class);
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30
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31
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32 public final static String NODATASELECTEDVALUE = "n/n";
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33
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34 /**
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35 * Constructor
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36 */
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37 public InputValidator() {
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38 super();
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39 }
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40
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41 /**
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42 * Validates the input of a range of double or date values. The input values
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43 * need to be valid double or date values. <i>minInput</i> needs to be
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44 * smaller or equal <i>maxInput</i>.
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45 *
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46 * @param minInput The lower bound.
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47 * @param maxInput The upper bound.
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48 * @param type One of 'Date' or 'Double'.
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49 * @return true, if the input is valid, otherwise false.
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50 */
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51 public static boolean isInputValid(String minInput, String maxInput, String type) {
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52 log.debug("InputValidator.isInputValid " + minInput + " " + maxInput + " " +type);
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53 boolean returnValue = false;
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54 if ("Date".equalsIgnoreCase(type)) {
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55 try {
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56 Date min = DateUtils.getDateFromString(minInput,DateUtils.DATE_PATTERN);
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57 Date max = DateUtils.getDateFromString(maxInput,DateUtils.DATE_PATTERN);
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58 int value = max.compareTo(min);
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59 returnValue = value >= 0;
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60 } catch (Exception e) {
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61 log.error(e,e);
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62 }
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63 } else if ("Double".equalsIgnoreCase(type)) {
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64 try {
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65 double min = Double.parseDouble(minInput);
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66 double max = Double.parseDouble(maxInput);
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67 returnValue = max >= min;
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68 } catch (Exception e) {
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69 log.error(e,e);
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70 }
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71 }
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72 log.debug("Is valid? " + returnValue);
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73 return returnValue;
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74 }
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75
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76 /**
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77 * Validates an input.
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78 *
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79 * @param input The input value.
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80 * @param type The input value type.
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81 * @return true if the input is valid, otherwise false.
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82 */
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83 public static boolean isInputValid(String input, String type) {
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84 log.debug("InputValidator.isInputValid " + input + " " + type);
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85
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86 // Let's check polygons and linestrings first, because they might
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87 // contain comma. A splitting at comma characters wouldn't be good here.
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88 if ("Polygon".equalsIgnoreCase(type) || "Linestring".equalsIgnoreCase(type))
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89 {
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90 try {
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91 WKTReader reader = new WKTReader();
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92 reader.read(input);
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93
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94 return true;
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95 }
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96 catch (ParseException pe) {
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97 log.warn(pe, pe);
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98 return false;
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99 }
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100 }
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101
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102 // Check all the other input here
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103 boolean returnValue = false;
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104 String[] values = input.split(",");
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105
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106 for (int i = 0; i < values.length; i++) {
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107 boolean valid;
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108
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109 if (NODATASELECTEDVALUE.equals(values[i].trim())){
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110 valid = true;
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111 } else if ("Integer".equalsIgnoreCase(type)) {
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112 valid = GenericValidator.isInt(values[i].trim());
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113 } else if ("Double".equalsIgnoreCase(type)) {
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114 valid = GenericValidator.isDouble(values[i].trim());
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115 } else if ("String".equalsIgnoreCase(type)) {
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116 valid = GenericValidator.matchRegexp(values[i], "[a-zA-Z0-9]"); // TODO:
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117 // FIXME:
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118 // VALIDATE
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119 // REGEXP
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120 } else if ("Date".equalsIgnoreCase(type)) {
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121 valid = GenericValidator.isDate(values[i].trim(),
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122 DateUtils.DATE_PATTERN, true);
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123 } else if ("Point".equalsIgnoreCase(type) || "Geometry".equals(type)) {
171
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124 valid = GenericValidator.matchRegexp(values[i], "[0-9]"); // TODO:
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125 // FIXME:
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126 // VALIDATE
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127 // REGEXP
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128 } else if ("AttributeName".equalsIgnoreCase(type)) {
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129 valid = org.apache.commons.validator.GenericValidator
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130 .matchRegexp(values[i], "[a-zA-Z0-9]"); // TODO: FIXME:
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131 // VALIDATE
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132 // REGEXP
173
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133 } else if ("Coordinate".equalsIgnoreCase(type)) {
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134 try {
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135 valid = getPointValue(values[i]) != null;
173
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136 } catch (ValidationException e) {
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137 log.debug(e.getMessage());
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138 valid = false;
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139 }
171
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140 } else {
101
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141 valid = false;
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142 }
171
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143 if (!valid) {
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144 returnValue = false;
101
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145 break;
171
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146 } else {
101
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147 returnValue = true;
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148 }
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149 }
171
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150 log.debug("Is valid? " + returnValue);
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151 return returnValue;
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152 }
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153
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154
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155 /**
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156 * Returns a point from wkt string.
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157 *
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158 * @param value The wkt string.
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159 * @return a point.
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160 * @throws ValidationException if <i>value</i> is not valid.
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161 */
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162 public static Point getPointValue(String value) throws ValidationException{
173
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163 log.debug("InputValidator.getPointValue " + value);
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164
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165 if (value.toLowerCase().startsWith("point")){
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166 try {
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167 return (Point)new WKTReader().read(value);
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168 } catch (ParseException e) {
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169 log.error(e,e);
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170 throw new ValidationException(e);
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171 }
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172 }else{
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173 String[] s, p;
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174
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175 double x=0,y=0;
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176 log.info("Position :"+value);
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177 s = value.split(" ");
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178 if (s.length != 2) {
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179 throw new ValidationException("Kein Blank separiert Breite und Länge");
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180 }
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181 p = s[0].split("[nNsS]");
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182 try {
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183 if (p.length == 1)
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184 y = new Double(p[0]);
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185 else
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186 y = new Double(p[0]) + new Double(p[1]) / new Double(60.);
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187 if (s[0].toLowerCase().contains("s"))
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188 y = -y;
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189 }
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190 catch (Exception e) {
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191 throw new ValidationException("Kein N|S oder nicht im ersten Substring, zB 56n42");
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192
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193 }
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194 p = s[1].split("[eEwW]");
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195 try {
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196 if (p.length ==1)
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197 x = new Double(p[0]);
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198 else
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199 x = new Double(p[0]) + new Double(p[1]) / new Double(60.) ;
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200 if (s[1].toLowerCase().contains("w"))
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201 x = -x;
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202 }
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203 catch (Exception e) {
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204 throw new ValidationException("Kein E|W oder nicht im zweiten Substring");
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205 }
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206 return new GeometryFactory().createPoint(new Coordinate(x,y));
173
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207 }
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208 }
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209
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210
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211 /**
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212 * Makes sure that <i>tmp</i> is between <i>lo</i> and <i>up</i>.
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213 *
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214 * @param tmp The value to validate.
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215 * @param lo The lower range bound.
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216 * @param up The upper range bound.
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217 * @return true, if tmp is valid, otherwise false.
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218 */
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219 public static boolean isDateValid(Date tmp, Date lo, Date up) {
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220 // we need to transform the given dates into seconds, because
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221 // they differ in milliseconds -> that's why we cannot use the
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222 // Date.compareTo(Date) method.
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223 long tmpTime = tmp.getTime() / 1000;
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224 long tmpLow = lo.getTime() / 1000;
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225 long tmpUp = up.getTime() / 1000;
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226
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227 if (tmpTime < tmpLow || tmpTime > tmpUp) {
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228 log.warn(
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229 "Date [" + tmp.toString() + "] is out of range ["
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230 + lo.toString() + " to "+ up.toString() + "].");
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231 return false;
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232 }
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233
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234 return true;
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235 }
101
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236 }
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237 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org