annotate flys-client/src/main/java/de/intevation/flys/client/server/DataFactory.java @ 1595:e53d773e6992

Display inserted W/Q values in WQSimpleArrayPanel. flys-client/trunk@3908 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Fri, 03 Feb 2012 15:27:46 +0000
parents dbdf954dbe94
children 6a65694bdcc2
rev   line source
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1 package de.intevation.flys.client.server;
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2
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3 import javax.xml.xpath.XPathConstants;
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4
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5 import org.w3c.dom.Element;
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6 import org.w3c.dom.NodeList;
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7
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8 import org.apache.log4j.Logger;
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9
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10 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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11 import de.intevation.artifacts.common.utils.XMLUtils;
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12
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13 import de.intevation.flys.client.shared.model.Data;
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14 import de.intevation.flys.client.shared.model.DataItem;
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15 import de.intevation.flys.client.shared.model.DefaultData;
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16 import de.intevation.flys.client.shared.model.DefaultDataItem;
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17 import de.intevation.flys.client.shared.model.DoubleArrayData;
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18 import de.intevation.flys.client.shared.model.IntegerArrayData;
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19 import de.intevation.flys.client.shared.model.IntegerData;
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20 import de.intevation.flys.client.shared.model.IntegerOptionsData;
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21 import de.intevation.flys.client.shared.model.IntegerRangeData;
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22 import de.intevation.flys.client.shared.model.StringData;
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23
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24
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25 /**
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26 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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27 */
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28 public class DataFactory {
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29
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30 private static final Logger logger = Logger.getLogger(DataFactory.class);
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31
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32 public static final String NS_URI = ArtifactNamespaceContext.NAMESPACE_URI;
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33
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34
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35 /**
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36 * Creates a new Data instance based on the <i>art:type</i> attribute of
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37 * <i>element</i>.
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38 *
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39 * @param element The Data element.
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40 *
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41 * @return a Data instance.
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42 */
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43 public static Data createDataFromElement(Element element) {
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44 String name = element.getAttributeNS(NS_URI, "name");
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45 String type = element.getAttributeNS(NS_URI, "type");
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46
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47 try {
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48 logger.debug("Create Data instance for: " + name + " | " + type);
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49
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50 if (type == null || type.length() == 0) {
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51 return createDefaultData(element, name);
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52 }
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53
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54 type = type.toLowerCase();
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55
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56 if (type.equals(StringData.TYPE)) {
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57 return createStringData(element, name);
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58 }
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59 else if (type.equals(IntegerData.TYPE)) {
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60 return createIntegerData(element, name);
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61 }
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62 else if (type.equals(IntegerOptionsData.TYPE)) {
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63 return createIntegerOptionsData(element, name);
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64 }
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65 else if (type.equals(IntegerRangeData.TYPE)) {
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66 return createIntegerRangeData(element, name);
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67 }
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68 else if (type.equals(IntegerArrayData.TYPE)) {
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69 return createIntegerArrayData(element, name);
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70 }
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71 else if (type.equals(DoubleArrayData.TYPE)) {
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72 return createDoubleArrayData(element, name);
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73 }
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74 else {
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75 return createDefaultData(element, name);
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76 }
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77 }
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78 catch (Exception e) {
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79 logger.error("Error while data creation for: " + name);
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80 }
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81
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82 return null;
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83 }
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84
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85
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86 /**
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87 * This method creates a new instance of DefaultData which has no real type
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88 * set.
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89 *
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90 * @param ele The Data element.
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91 * @param name The name of the Data instance.
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92 *
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93 * @return an instance of DefaultData.
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94 */
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95 protected static Data createDefaultData(Element ele, String name) {
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96 logger.debug("Create new DefaultData");
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97 return new DefaultData(name, name, "default", extractDataItems(ele));
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98 }
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99
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100
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101 /**
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102 * This method creates a new instance of StringData which has a type
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103 * "string" set.
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104 *
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105 * @param ele The Data element.
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106 * @param name The name of the Data instance.
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107 *
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108 * @return an instance of StringData.
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109 */
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110 protected static Data createStringData(Element ele, String name) {
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111 return new StringData(name, name, extractDataItems(ele));
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112 }
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113
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114
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115 /**
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116 * This method creates a new instance of DefaultData which has a type
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117 * "integer" set.
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118 *
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119 * @param ele The Data element.
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120 * @param name The name of the Data instance.
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121 *
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122 * @return an instance of IntegerData.
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123 */
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124 protected static Data createIntegerData(Element ele, String name) {
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125 return new IntegerData(name, name, extractDataItems(ele));
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126 }
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127
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128
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129 /**
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130 * This method creates a new instance of DefaultData which has a type
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131 * "intoptions" set.
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132 *
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133 * @param ele The Data element.
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134 * @param name The name of the Data instance.
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135 *
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136 * @return an instance of IntegerOptionsData.
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137 */
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138 protected static Data createIntegerOptionsData(Element ele, String name) {
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139 return new IntegerOptionsData(name, name, extractDataItems(ele));
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140 }
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141
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142
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143 /**
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144 * This method creates a new instance of DefaultData which has a type
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145 * "intrange" set.
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146 *
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147 * @param ele The Data element.
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148 * @param name The name of the Data instance.
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149 *
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150 * @return an instance of IntegerRangeData.
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151 */
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152 protected static Data createIntegerRangeData(Element ele, String name) {
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153 DataItem[] items = extractDataItems(ele);
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154 String rawValue = items[0].getStringValue();
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155
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156 String[] minmax = rawValue.split(";");
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157
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158 return new IntegerRangeData(
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159 name,
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160 name,
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161 Integer.valueOf(minmax[0]),
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162 Integer.valueOf(minmax[1]));
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163 }
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164
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165
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166 /**
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167 * This method creates a new instance of DefaultData which has a type
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168 * "integerarray" set.
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169 *
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170 * @param ele The Data element.
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171 * @param name The name of the Data instance.
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172 *
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173 * @return an instance of IntegerArrayData.
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174 */
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175 protected static Data createIntegerArrayData(Element ele, String name) {
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176 DataItem[] items = extractDataItems(ele);
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177 String rawValue = items[0].getStringValue();
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178
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179 String[] values = rawValue.split(";");
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180 int[] integers = new int[values.length];
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181
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182 for (int i = 0; i < values.length; i++) {
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183 try {
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184 integers[i] = Integer.valueOf(values[i]);
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185 }
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186 catch (NumberFormatException nfe) {
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187 logger.warn("Error while parsing IntegerArrayData: " + nfe);
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188 }
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189 }
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190
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191 return new IntegerArrayData(name, items[0].getLabel(), integers);
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192 }
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193
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194
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195 /**
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196 * This method creates a new instance of DefaultData which has a type
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197 * "doublearray" set.
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198 *
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199 * @param ele The Data element.
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200 * @param name The name of the Data instance.
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201 *
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202 * @return an instance of DoubleArrayData.
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203 */
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204 protected static Data createDoubleArrayData(Element ele, String name) {
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205 DataItem[] items = extractDataItems(ele);
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206 String rawValue = items[0].getStringValue();
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207
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208 String[] values = rawValue.split(";");
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209 double[] doubles = new double[values.length];
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210
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211 for (int i = 0; i < values.length; i++) {
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212 try {
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213 doubles[i] = Double.valueOf(values[i]);
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214 }
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215 catch (NumberFormatException nfe) {
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216 logger.warn("Error while parsing DoubleArrayData: " + nfe);
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217 }
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218 }
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219
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220 return new DoubleArrayData(name, items[0].getLabel(), doubles);
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221 }
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222
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223
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224 /**
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225 * This method extracts the art:item elements placed under <i>elements</i>.
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226 *
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227 * @param element A data node that contains items.
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228 *
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229 * @return a list of DataItems.
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230 */
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231 protected static DataItem[] extractDataItems(Element element) {
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232 NodeList itemList = (NodeList) XMLUtils.xpath(
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233 element,
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234 "art:item",
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235 XPathConstants.NODESET,
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236 ArtifactNamespaceContext.INSTANCE);
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237
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238 if (itemList == null || itemList.getLength() == 0) {
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239 logger.debug("No old data items found.");
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240 return null;
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241 }
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242
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243 int count = itemList.getLength();
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244
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245 DataItem[] items = new DataItem[count];
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246
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247 for (int i = 0; i < count; i++) {
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248 Element tmp = (Element) itemList.item(i);
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249
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250 String value = tmp.getAttributeNS(NS_URI, "value");
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251 String label = tmp.getAttributeNS(NS_URI, "label");
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252
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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253 items[i] = new DefaultDataItem(label, label, value);
1227878665b5 Introduced a DataFactory that should be used to create new Data instances.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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254 }
1227878665b5 Introduced a DataFactory that should be used to create new Data instances.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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255
1227878665b5 Introduced a DataFactory that should be used to create new Data instances.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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256 return items;
1227878665b5 Introduced a DataFactory that should be used to create new Data instances.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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257 }
1227878665b5 Introduced a DataFactory that should be used to create new Data instances.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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258 }
1227878665b5 Introduced a DataFactory that should be used to create new Data instances.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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259 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :

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