Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/DataFactory.java @ 2532:261347ea60b8

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Added new Data type StringOptionsData; allow this Data type for ParameterMatrixPanel. flys-client/trunk@4428 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 16 May 2012 14:52:39 +0000
parents 33e2a1e23ae8
children d0a9acddbea2
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.StringOptionsData;
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24 import de.intevation.flys.client.shared.model.LongRangeData;
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25
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26
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27 /**
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28 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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29 */
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30 public class DataFactory {
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31
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32 private static final Logger logger = Logger.getLogger(DataFactory.class);
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33
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34 public static final String NS_URI = ArtifactNamespaceContext.NAMESPACE_URI;
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35
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36
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37 /**
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38 * Creates a new Data instance based on the <i>art:type</i> attribute of
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39 * <i>element</i>.
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40 *
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41 * @param element The Data element.
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42 *
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43 * @return a Data instance.
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44 */
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45 public static Data createDataFromElement(Element element) {
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46 String name = element.getAttributeNS(NS_URI, "name");
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47 String type = element.getAttributeNS(NS_URI, "type");
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48 String label = element.getAttributeNS(NS_URI, "label");
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49
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50 label = label != null && label.length() > 0 ? label : name;
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51
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52 try {
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53 logger.debug("Create Data instance for: " + name + " | " + type);
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54
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55 if (type == null || type.length() == 0) {
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56 return createDefaultData(element, name, label);
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57 }
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58
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59 type = type.toLowerCase();
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60
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61 if (type.equals(StringData.TYPE)) {
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62 return createStringData(element, name, label);
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63 }
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64 else if (type.equals(IntegerData.TYPE)) {
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65 return createIntegerData(element, name, label);
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66 }
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67 else if (type.equals(StringOptionsData.TYPE)) {
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68 return createStringOptionsData(element, name, label);
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69 }
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70 else if (type.equals(IntegerOptionsData.TYPE)) {
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71 return createIntegerOptionsData(element, name, label);
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72 }
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73 else if (type.equals(IntegerRangeData.TYPE)) {
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74 return createIntegerRangeData(element, name, label);
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75 }
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76 else if (type.equals(IntegerArrayData.TYPE)) {
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77 return createIntegerArrayData(element, name, label);
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78 }
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79 else if (type.equals(DoubleArrayData.TYPE)) {
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80 return createDoubleArrayData(element, name, label);
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81 }
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82 else if (type.equals(LongRangeData.TYPE)) {
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83 return createLongRangeData(element, name, label);
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84 }
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85 else {
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86 return createDefaultData(element, name, label);
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87 }
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88 }
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89 catch (Exception e) {
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90 logger.error("Error while data creation for: " + name);
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91 }
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92
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93 return null;
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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 * This method creates a new instance of DefaultData which has no real type
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99 * set.
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100 *
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101 * @param ele The Data element.
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102 * @param name The name of the Data instance.
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103 *
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104 * @return an instance of DefaultData.
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105 */
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106 protected static Data createDefaultData(Element ele, String name, String label) {
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107 logger.debug("Create new DefaultData");
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108 return new DefaultData(name, label, "default", extractDataItems(ele));
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109 }
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111
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112 /**
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113 * This method creates a new instance of StringData which has a type
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114 * "string" set.
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115 *
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116 * @param ele The Data element.
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117 * @param name The name of the Data instance.
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118 *
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119 * @return an instance of StringData.
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120 */
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121 protected static Data createStringData(Element ele, String name, String label) {
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122 return new StringData(name, label, extractDataItems(ele));
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123 }
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124
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125
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126 /**
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127 * This method creates a new instance of DefaultData which has a type
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128 * "integer" set.
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129 *
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130 * @param ele The Data element.
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131 * @param name The name of the Data instance.
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132 *
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133 * @return an instance of IntegerData.
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134 */
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135 protected static Data createIntegerData(Element ele, String name, String label) {
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136 return new IntegerData(name, label, extractDataItems(ele));
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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 * This method creates a new instance of StringOptionsData which has a type
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142 * "options" set.
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143 *
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144 * @param ele The Data element.
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145 * @param name The name of the Data instance.
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146 *
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147 * @return an instance of StringOptionsData.
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148 */
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149 protected static Data createStringOptionsData(Element ele, String name, String label) {
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150 return new StringOptionsData(name, label, extractDataItems(ele));
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151 }
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152
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153
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154 /**
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155 * This method creates a new instance of DefaultData which has a type
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156 * "intoptions" set.
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157 *
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158 * @param ele The Data element.
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159 * @param name The name of the Data instance.
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160 *
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161 * @return an instance of IntegerOptionsData.
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162 */
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163 protected static Data createIntegerOptionsData(Element ele, String name, String label) {
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164 return new IntegerOptionsData(name, label, extractDataItems(ele));
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165 }
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166
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167
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168 /**
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169 * This method creates a new instance of DefaultData which has a type
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170 * "intrange" set.
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171 *
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172 * @param ele The Data element.
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173 * @param name The name of the Data instance.
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174 *
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175 * @return an instance of IntegerRangeData.
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176 */
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177 protected static Data createIntegerRangeData(Element ele, String name, String label) {
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178 DataItem[] items = extractDataItems(ele);
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179 String rawValue = items[0].getStringValue();
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180
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181 String[] minmax = rawValue.split(";");
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182
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183 return new IntegerRangeData(
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184 name,
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185 label,
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186 Integer.valueOf(minmax[0]),
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187 Integer.valueOf(minmax[1]));
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188 }
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189
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190
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191 /**
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192 * This method creates a new instance of DefaultData which has a type
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193 * "integerarray" set.
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194 *
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195 * @param ele The Data element.
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196 * @param name The name of the Data instance.
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197 *
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198 * @return an instance of IntegerArrayData.
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199 */
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200 protected static Data createIntegerArrayData(Element ele, String name, String label) {
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201 DataItem[] items = extractDataItems(ele);
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202 String rawValue = items[0].getStringValue();
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203
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204 String[] values = rawValue.split(";");
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205 int[] integers = new int[values.length];
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206
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207 for (int i = 0; i < values.length; i++) {
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208 try {
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209 integers[i] = Integer.valueOf(values[i]);
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210 }
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211 catch (NumberFormatException nfe) {
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212 logger.warn("Error while parsing IntegerArrayData: " + nfe);
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213 }
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214 }
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215
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216 return new IntegerArrayData(name, label, integers);
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217 }
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218
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219
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220 /**
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221 * This method creates a new instance of DefaultData which has a type
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222 * "doublearray" set.
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223 *
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224 * @param ele The Data element.
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225 * @param name The name of the Data instance.
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226 *
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227 * @return an instance of DoubleArrayData.
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228 */
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229 protected static Data createDoubleArrayData(Element ele, String name, String label) {
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230 DataItem[] items = extractDataItems(ele);
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231 String rawValue = items[0].getStringValue();
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232
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233 String[] values = rawValue.split(";");
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234 double[] doubles = new double[values.length];
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235
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236 for (int i = 0; i < values.length; i++) {
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237 try {
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238 doubles[i] = Double.valueOf(values[i]);
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239 }
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240 catch (NumberFormatException nfe) {
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241 logger.warn("Error while parsing DoubleArrayData: " + nfe);
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242 }
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243 }
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244
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245 return new DoubleArrayData(name, label, doubles);
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246 }
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247
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248
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249 /**
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250 * This method extracts the art:item elements placed under <i>elements</i>.
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251 *
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252 * @param element A data node that contains items.
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253 *
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254 * @return a list of DataItems.
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255 */
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256 protected static DataItem[] extractDataItems(Element element) {
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257 NodeList itemList = (NodeList) XMLUtils.xpath(
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258 element,
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259 "art:item",
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260 XPathConstants.NODESET,
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261 ArtifactNamespaceContext.INSTANCE);
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262
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263 if (itemList == null || itemList.getLength() == 0) {
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264 logger.debug("No data items found.");
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265 return null;
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266 }
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267
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268 int count = itemList.getLength();
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269
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270 DataItem[] items = new DataItem[count];
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271
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272 logger.debug("There are " + count + " data items in element.");
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273
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274 for (int i = 0; i < count; i++) {
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275 Element tmp = (Element) itemList.item(i);
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276
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277 String value = tmp.getAttributeNS(NS_URI, "value");
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278 String label = tmp.getAttributeNS(NS_URI, "label");
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279
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280 logger.debug("Found data item:");
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281 logger.debug(" label: " + label);
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282 logger.debug(" value: " + value);
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283
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284 items[i] = new DefaultDataItem(label, label, value);
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285 }
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286
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287 return items;
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288 }
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289
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290
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291 /**
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292 * This method creates a new instance of LongRangeData which has a type
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293 * "longrange" set.
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294 *
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295 * @param ele The Data element.
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296 * @param name The name of the Data instance.
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297 *
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298 * @return an instance of IntegerRangeData.
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299 */
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300 protected static Data createLongRangeData(Element ele, String name, String label) {
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301 DataItem[] items = extractDataItems(ele);
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302 String rawValue = items[0].getStringValue();
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303
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304 String[] minmax = rawValue.split(";");
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305
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306 return new LongRangeData(
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307 name,
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308 label,
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309 Long.valueOf(minmax[0]),
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310 Long.valueOf(minmax[1]));
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311 }
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312
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313 }
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314 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org