Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/artifacts/GNVProductArtifactFactory.java @ 1118:c01c220312d0

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Made it compile again with an updated ArtifactDatabase. gnv-artifacts/trunk@4137 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Mon, 12 Mar 2012 08:31:46 +0000
parents dec4257ad570
children
rev   line source
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1 /*
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2 * Copyright (c) 2010 by Intevation GmbH
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3 *
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4 * This program is free software under the LGPL (>=v2.1)
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5 * Read the file LGPL.txt coming with the software for details
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6 * or visit http://www.gnu.org/licenses/ if it does not exist.
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7 */
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8
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9 package de.intevation.gnv.artifacts;
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10
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11 import java.util.ArrayList;
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12 import java.util.Collection;
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13 import java.util.HashMap;
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14 import java.util.Map;
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15
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16 import javax.xml.xpath.XPathConstants;
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17
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18 import org.apache.log4j.Logger;
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19 import org.w3c.dom.Document;
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20 import org.w3c.dom.Node;
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21 import org.w3c.dom.NodeList;
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22
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23 import de.intevation.artifactdatabase.DefaultArtifactFactory;
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24 import de.intevation.artifactdatabase.ProxyArtifact;
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25 import de.intevation.artifacts.common.utils.XMLUtils;
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26 import de.intevation.artifacts.Artifact;
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27 import de.intevation.artifacts.ArtifactFactory;
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28 import de.intevation.artifacts.CallMeta;
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29 import de.intevation.artifacts.GlobalContext;
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30 import de.intevation.gnv.artifacts.fis.SelectProductArtifact;
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31 import de.intevation.gnv.artifacts.fis.product.DefaultProduct;
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32 import de.intevation.gnv.state.DefaultInputData;
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33
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34 /**
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35 * This factory is called to create a {@link
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36 * de.intevation.gnv.artifacts.fis.SelectProductArtifact} which lets the user
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37 * select a product supported by the selected fis.
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38 *
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39 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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40 */
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41 public class GNVProductArtifactFactory extends DefaultArtifactFactory {
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42
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43 public static final String XPATH_REPLACE_NAME = "IDENTIFIER";
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44
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45 public static final String XPATH_PRODUCT_ARTIFACT =
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46 "artifact-database/artifacts/artifact[@name='"+XPATH_REPLACE_NAME+"']";
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47
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48 public static final String XPATH_PRODUCT = "products/product";
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49
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50 public static final String XPATH_PRODUCT_NAME = "@name";
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51
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52 public static final String XPATH_PRODUCT_FACTORY = "artifact-factory";
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53
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54 public static final String XPATH_PRODUCT_PARAMETER = "parameters/parameter";
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55
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56 private Logger logger = Logger.getLogger(GNVProductArtifactFactory.class);
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57
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58 private Map productFactories;
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59 private Map products;
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60
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61
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62 /**
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63 * Constructor.
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64 */
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65 public GNVProductArtifactFactory() {
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66 }
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67
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68 /**
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69 * Method to create an artifact. If the created artifact is from type
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70 * <code>ProxyArtifact</code>, a further ProductSelectArtifact is created
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71 * which becomes embedded into the <code>ProxyArtifact</code>.
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72 * @param identifier UUID.
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73 * @param context CallContext.
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74 * @param data Some data.
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75 * @return The created artifact.
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76 */
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77 @Override
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78 public Artifact createArtifact(
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79 String identifier,
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80 GlobalContext context,
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81 CallMeta meta,
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82 Document data
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83 ) {
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84 // create a SelectProductArtifact for initial product selection
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85 Artifact artifact = super.createArtifact(identifier, context, meta, data);
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86
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87 if (artifact instanceof ProxyArtifact) {
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88
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89 SelectProductArtifact select = new SelectProductArtifact();
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90 select.setProducts(products);
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91 select.setup(identifier, this, context, meta, data);
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92
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93 ((ProxyArtifact) artifact).setProxied(select);
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94 }
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95
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96 return artifact;
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97 }
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98
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99
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100 @Override
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101 public void setup(Document document, Node factoryNode) {
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102 super.setup(document, factoryNode);
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103
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104 String xpath = XPATH_PRODUCT_ARTIFACT.replace(XPATH_REPLACE_NAME, name);
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105 Node artifact = (Node) XMLUtils.xpath(
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106 document, xpath, XPathConstants.NODE);
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107
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108 NodeList productNodes = (NodeList) XMLUtils.xpath(
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109 artifact, XPATH_PRODUCT, XPathConstants.NODESET);
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110
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111 if (productNodes == null) {
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112 logger.warn("No products found for fis: " + name);
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113 return;
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114 }
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115
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116 int productLength = productNodes.getLength();
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117
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118 if (productLength != 0) {
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119 productFactories = new HashMap(productLength);
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120 products = new HashMap(productLength);
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121
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122 parseProductFactories(document, productNodes);
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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 public ArtifactFactory getArtifactFactoryByName(String name) {
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128 return (ArtifactFactory) productFactories.get(name);
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129 }
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130
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131
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132 protected void parseProductFactories(Document document, NodeList products) {
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133 int items = products.getLength();
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134
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135 for(int i = 0; i < items; i++) {
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136
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137 try {
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138 Node product = products.item(i);
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139
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140 String name = (String) XMLUtils.xpath(
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141 product, XPATH_PRODUCT_NAME, XPathConstants.STRING);
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142
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143 Node factoryNode = (Node) XMLUtils.xpath(
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144 product, XPATH_PRODUCT_FACTORY, XPathConstants.NODE);
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145
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146 String factoryClass = factoryNode.getTextContent().trim();
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147
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148 if (factoryClass == null || factoryClass.equals("")) {
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149 logger.warn("No artifact factory class found for " + name);
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150 continue;
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151 }
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152
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153 Class cls = Class.forName(factoryClass);
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154 ArtifactFactory factory = (ArtifactFactory) cls.newInstance();
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155 factory.setup(document, factoryNode);
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156
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157 productFactories.put(name, factory);
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158 initializeProducts(product);
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159 }
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160 catch (ClassNotFoundException cnfe) {
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161 logger.warn(cnfe, cnfe);
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162 }
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163 catch (InstantiationException ie) {
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164 logger.warn(ie, ie);
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165 }
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166 catch (IllegalAccessException iae) {
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167 logger.warn(iae, iae);
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168 }
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169 }
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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 * Initialize all products supported by the current fis.
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175 */
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176 protected void initializeProducts(Node productNode) {
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177 String productName = (String) XMLUtils.xpath(
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178 productNode, "@name", XPathConstants.STRING);
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179
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180 NodeList parameterNodes = (NodeList) XMLUtils.xpath(
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181 productNode, XPATH_PRODUCT_PARAMETER, XPathConstants.NODESET
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182 );
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183
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184 if (parameterNodes != null) {
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185 int items = parameterNodes.getLength();
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186 Collection inputParameter = new ArrayList(items);
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187
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188 for (int j = 0; j < items; j++) {
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189 Node parameterNode = (Node) parameterNodes.item(j);
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190 String name = (String) XMLUtils.xpath(
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191 parameterNode, "@name", XPathConstants.STRING);
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192 String value = (String) XMLUtils.xpath(
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193 parameterNode, "@value", XPathConstants.STRING);
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194
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195 inputParameter.add(new DefaultInputData(name, value));
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196 }
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197
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198 products.put(
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199 productName,
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200 new DefaultProduct(productName, inputParameter, this.name)
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201 );
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202 }
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203 }
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204 }
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205 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org