Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/DataFactory.java @ 2528:33e2a1e23ae8

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Implemented ParameterMatrixPanel.createOld() and added a real 'description' to Data instances in DataFactory. flys-client/trunk@4421 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 16 May 2012 10:45:57 +0000
parents 6a65694bdcc2
children 261347ea60b8
rev   line source
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1227878665b5 Introduced a DataFactory that should be used to create new Data instances.
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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 import de.intevation.flys.client.shared.model.LongRangeData;
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24
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25
1227878665b5 Introduced a DataFactory that should be used to create new Data instances.
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26 /**
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27 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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28 */
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29 public class DataFactory {
1227878665b5 Introduced a DataFactory that should be used to create new Data instances.
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30
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31 private static final Logger logger = Logger.getLogger(DataFactory.class);
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32
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33 public static final String NS_URI = ArtifactNamespaceContext.NAMESPACE_URI;
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34
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35
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36 /**
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37 * Creates a new Data instance based on the <i>art:type</i> attribute of
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38 * <i>element</i>.
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39 *
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40 * @param element The Data element.
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41 *
1227878665b5 Introduced a DataFactory that should be used to create new Data instances.
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42 * @return a Data instance.
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43 */
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44 public static Data createDataFromElement(Element element) {
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45 String name = element.getAttributeNS(NS_URI, "name");
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46 String type = element.getAttributeNS(NS_URI, "type");
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47 String label = element.getAttributeNS(NS_URI, "label");
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48
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49 label = label != null && label.length() > 0 ? label : name;
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50
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51 try {
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52 logger.debug("Create Data instance for: " + name + " | " + type);
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53
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54 if (type == null || type.length() == 0) {
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55 return createDefaultData(element, name, label);
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56 }
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57
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58 type = type.toLowerCase();
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59
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60 if (type.equals(StringData.TYPE)) {
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61 return createStringData(element, name, label);
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62 }
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63 else if (type.equals(IntegerData.TYPE)) {
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64 return createIntegerData(element, name, label);
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65 }
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66 else if (type.equals(IntegerOptionsData.TYPE)) {
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67 return createIntegerOptionsData(element, name, label);
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68 }
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69 else if (type.equals(IntegerRangeData.TYPE)) {
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70 return createIntegerRangeData(element, name, label);
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71 }
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72 else if (type.equals(IntegerArrayData.TYPE)) {
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73 return createIntegerArrayData(element, name, label);
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74 }
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75 else if (type.equals(DoubleArrayData.TYPE)) {
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76 return createDoubleArrayData(element, name, label);
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77 }
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78 else if (type.equals(LongRangeData.TYPE)) {
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79 return createLongRangeData(element, name, label);
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80 }
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81 else {
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82 return createDefaultData(element, name, label);
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83 }
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84 }
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85 catch (Exception e) {
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86 logger.error("Error while data creation for: " + name);
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87 }
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88
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89 return null;
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90 }
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91
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92
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93 /**
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94 * This method creates a new instance of DefaultData which has no real type
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95 * set.
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96 *
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97 * @param ele The Data element.
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98 * @param name The name of the Data instance.
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99 *
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100 * @return an instance of DefaultData.
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101 */
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102 protected static Data createDefaultData(Element ele, String name, String label) {
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103 logger.debug("Create new DefaultData");
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104 return new DefaultData(name, label, "default", extractDataItems(ele));
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105 }
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106
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107
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108 /**
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109 * This method creates a new instance of StringData which has a type
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110 * "string" set.
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111 *
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112 * @param ele The Data element.
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113 * @param name The name of the Data instance.
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114 *
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115 * @return an instance of StringData.
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116 */
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117 protected static Data createStringData(Element ele, String name, String label) {
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118 return new StringData(name, label, extractDataItems(ele));
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119 }
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120
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121
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122 /**
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123 * This method creates a new instance of DefaultData which has a type
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124 * "integer" set.
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125 *
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126 * @param ele The Data element.
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127 * @param name The name of the Data instance.
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128 *
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129 * @return an instance of IntegerData.
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130 */
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131 protected static Data createIntegerData(Element ele, String name, String label) {
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132 return new IntegerData(name, label, extractDataItems(ele));
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133 }
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134
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135
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136 /**
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137 * This method creates a new instance of DefaultData which has a type
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138 * "intoptions" set.
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139 *
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140 * @param ele The Data element.
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141 * @param name The name of the Data instance.
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142 *
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143 * @return an instance of IntegerOptionsData.
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144 */
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145 protected static Data createIntegerOptionsData(Element ele, String name, String label) {
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146 return new IntegerOptionsData(name, label, extractDataItems(ele));
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147 }
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148
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149
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150 /**
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151 * This method creates a new instance of DefaultData which has a type
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152 * "intrange" set.
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153 *
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154 * @param ele The Data element.
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155 * @param name The name of the Data instance.
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156 *
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157 * @return an instance of IntegerRangeData.
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158 */
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159 protected static Data createIntegerRangeData(Element ele, String name, String label) {
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160 DataItem[] items = extractDataItems(ele);
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161 String rawValue = items[0].getStringValue();
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162
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163 String[] minmax = rawValue.split(";");
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164
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165 return new IntegerRangeData(
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166 name,
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167 label,
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168 Integer.valueOf(minmax[0]),
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169 Integer.valueOf(minmax[1]));
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170 }
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171
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172
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173 /**
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174 * This method creates a new instance of DefaultData which has a type
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175 * "integerarray" set.
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176 *
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177 * @param ele The Data element.
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178 * @param name The name of the Data instance.
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179 *
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180 * @return an instance of IntegerArrayData.
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181 */
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182 protected static Data createIntegerArrayData(Element ele, String name, String label) {
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183 DataItem[] items = extractDataItems(ele);
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184 String rawValue = items[0].getStringValue();
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185
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186 String[] values = rawValue.split(";");
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187 int[] integers = new int[values.length];
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188
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189 for (int i = 0; i < values.length; i++) {
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190 try {
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191 integers[i] = Integer.valueOf(values[i]);
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192 }
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193 catch (NumberFormatException nfe) {
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194 logger.warn("Error while parsing IntegerArrayData: " + nfe);
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195 }
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196 }
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197
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198 return new IntegerArrayData(name, label, integers);
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199 }
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200
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201
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202 /**
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203 * This method creates a new instance of DefaultData which has a type
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204 * "doublearray" set.
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205 *
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206 * @param ele The Data element.
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207 * @param name The name of the Data instance.
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208 *
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209 * @return an instance of DoubleArrayData.
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210 */
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211 protected static Data createDoubleArrayData(Element ele, String name, String label) {
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212 DataItem[] items = extractDataItems(ele);
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213 String rawValue = items[0].getStringValue();
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214
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215 String[] values = rawValue.split(";");
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216 double[] doubles = new double[values.length];
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217
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218 for (int i = 0; i < values.length; i++) {
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219 try {
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220 doubles[i] = Double.valueOf(values[i]);
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221 }
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222 catch (NumberFormatException nfe) {
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223 logger.warn("Error while parsing DoubleArrayData: " + nfe);
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224 }
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225 }
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226
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227 return new DoubleArrayData(name, label, doubles);
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228 }
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229
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230
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231 /**
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232 * This method extracts the art:item elements placed under <i>elements</i>.
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233 *
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234 * @param element A data node that contains items.
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235 *
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236 * @return a list of DataItems.
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237 */
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238 protected static DataItem[] extractDataItems(Element element) {
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239 NodeList itemList = (NodeList) XMLUtils.xpath(
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240 element,
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241 "art:item",
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242 XPathConstants.NODESET,
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243 ArtifactNamespaceContext.INSTANCE);
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244
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245 if (itemList == null || itemList.getLength() == 0) {
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246 logger.debug("No old data items found.");
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247 return null;
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248 }
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249
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250 int count = itemList.getLength();
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251
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252 DataItem[] items = new DataItem[count];
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253
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254 for (int i = 0; i < count; i++) {
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255 Element tmp = (Element) itemList.item(i);
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256
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257 String value = tmp.getAttributeNS(NS_URI, "value");
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258 String label = tmp.getAttributeNS(NS_URI, "label");
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259
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260 items[i] = new DefaultDataItem(label, label, value);
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261 }
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262
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263 return items;
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264 }
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265
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266
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267 /**
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268 * This method creates a new instance of LongRangeData which has a type
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269 * "longrange" set.
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270 *
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271 * @param ele The Data element.
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272 * @param name The name of the Data instance.
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273 *
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274 * @return an instance of IntegerRangeData.
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275 */
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276 protected static Data createLongRangeData(Element ele, String name, String label) {
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277 DataItem[] items = extractDataItems(ele);
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278 String rawValue = items[0].getStringValue();
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279
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280 String[] minmax = rawValue.split(";");
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281
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282 return new LongRangeData(
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283 name,
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284 label,
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285 Long.valueOf(minmax[0]),
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286 Long.valueOf(minmax[1]));
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287 }
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288
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289 }
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290 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org