Mercurial > dive4elements > gnv-client
annotate gnv-artifacts/src/main/java/de/intevation/gnv/artifacts/GNVProductArtifactFactory.java @ 1028:41234fcf4c7e
Some Bugfixes which prevent Exceptions executing the Examples in the config-manual
gnv-artifacts/trunk@1052 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Tim Englich <tim.englich@intevation.de> |
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date | Tue, 04 May 2010 12:40:21 +0000 |
parents | 05bf8534a35a |
children | f953c9a559d8 |
rev | line source |
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1 package de.intevation.gnv.artifacts; |
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2 |
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3 import java.util.ArrayList; |
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4 import java.util.Collection; |
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5 import java.util.HashMap; |
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6 import java.util.Map; |
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7 |
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8 import javax.xml.xpath.XPathConstants; |
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9 |
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10 import org.apache.log4j.Logger; |
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11 import org.w3c.dom.Document; |
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12 import org.w3c.dom.Node; |
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13 import org.w3c.dom.NodeList; |
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14 |
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15 import de.intevation.artifactdatabase.DefaultArtifactFactory; |
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16 import de.intevation.artifactdatabase.ProxyArtifact; |
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17 import de.intevation.artifactdatabase.XMLUtils; |
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18 import de.intevation.artifacts.Artifact; |
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19 import de.intevation.artifacts.ArtifactFactory; |
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20 import de.intevation.gnv.artifacts.fis.SelectProductArtifact; |
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21 import de.intevation.gnv.artifacts.fis.product.DefaultProduct; |
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22 import de.intevation.gnv.state.DefaultInputData; |
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23 |
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24 /** |
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25 * This factory is called to create a {@link |
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26 * de.intevation.gnv.artifacts.fis.SelectProductArtifact} which lets the user |
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27 * select a product supported by the selected fis. |
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28 * |
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29 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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30 */ |
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31 public class GNVProductArtifactFactory extends DefaultArtifactFactory { |
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32 |
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33 public static final String XPATH_REPLACE_NAME = "IDENTIFIER"; |
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34 |
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35 public static final String XPATH_PRODUCT_ARTIFACT = |
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36 "artifact-database/artifacts/artifact[@name='"+XPATH_REPLACE_NAME+"']"; |
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37 |
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38 public static final String XPATH_PRODUCT = "products/product"; |
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39 |
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40 public static final String XPATH_PRODUCT_NAME = "@name"; |
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41 |
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42 public static final String XPATH_PRODUCT_FACTORY = "artifact-factory"; |
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43 |
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44 public static final String XPATH_PRODUCT_PARAMETER = "parameters/parameter"; |
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45 |
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46 private Logger logger = Logger.getLogger(GNVProductArtifactFactory.class); |
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47 |
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48 private Map productFactories; |
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49 private Map products; |
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50 |
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51 |
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52 /** |
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53 * Constructor. |
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54 */ |
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55 public GNVProductArtifactFactory() { |
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56 } |
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57 |
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58 /** |
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59 * Method to create an artifact. If the created artifact is from type |
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60 * <code>ProxyArtifact</code>, a further ProductSelectArtifact is created |
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61 * which becomes embedded into the <code>ProxyArtifact</code>. |
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62 * @param identifier UUID. |
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63 * @param context CallContext. |
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64 * @param data Some data. |
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65 * @return The created artifact. |
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66 */ |
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67 @Override |
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68 public Artifact createArtifact(String identifier, Object context, Document data) { |
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69 |
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70 // create a SelectProductArtifact for initial product selection |
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71 Artifact artifact = super.createArtifact(identifier, context, data); |
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72 |
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73 if (artifact instanceof ProxyArtifact) { |
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74 |
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75 SelectProductArtifact select = new SelectProductArtifact(); |
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76 select.setProducts(products); |
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77 select.setup(identifier, this, context, data); |
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78 |
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79 ((ProxyArtifact) artifact).setProxied(select); |
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80 } |
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81 |
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82 return artifact; |
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83 } |
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84 |
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85 |
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86 @Override |
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87 public void setup(Document document, Node factoryNode) { |
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88 super.setup(document, factoryNode); |
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89 |
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90 String xpath = XPATH_PRODUCT_ARTIFACT.replace(XPATH_REPLACE_NAME, name); |
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91 Node artifact = (Node) XMLUtils.xpath( |
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92 document, xpath, XPathConstants.NODE); |
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93 |
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94 NodeList productNodes = (NodeList) XMLUtils.xpath( |
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95 artifact, XPATH_PRODUCT, XPathConstants.NODESET); |
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96 |
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97 if (productNodes == null) { |
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98 logger.warn("No products found for fis: " + name); |
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99 return; |
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100 } |
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101 |
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102 int productLength = productNodes.getLength(); |
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103 |
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104 if (productLength != 0) { |
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105 productFactories = new HashMap(productLength); |
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106 products = new HashMap(productLength); |
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107 |
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108 parseProductFactories(document, productNodes); |
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109 } |
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110 } |
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111 |
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112 |
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113 public ArtifactFactory getArtifactFactoryByName(String name) { |
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114 return (ArtifactFactory) productFactories.get(name); |
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115 } |
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116 |
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117 |
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118 protected void parseProductFactories(Document document, NodeList products) { |
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119 int items = products.getLength(); |
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120 |
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121 for(int i = 0; i < items; i++) { |
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122 |
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123 try { |
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124 Node product = products.item(i); |
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125 |
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126 String name = (String) XMLUtils.xpath( |
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127 product, XPATH_PRODUCT_NAME, XPathConstants.STRING); |
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128 |
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129 Node factoryNode = (Node) XMLUtils.xpath( |
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130 product, XPATH_PRODUCT_FACTORY, XPathConstants.NODE); |
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131 |
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132 String factoryClass = factoryNode.getTextContent().trim(); |
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133 |
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134 if (factoryClass == null || factoryClass.equals("")) { |
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135 logger.warn("No artifact factory class found for " + name); |
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136 continue; |
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137 } |
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138 |
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139 Class cls = Class.forName(factoryClass); |
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140 ArtifactFactory factory = (ArtifactFactory) cls.newInstance(); |
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141 factory.setup(document, factoryNode); |
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142 |
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143 productFactories.put(name, factory); |
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144 initializeProducts(product); |
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145 } |
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146 catch (ClassNotFoundException cnfe) { |
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147 logger.warn(cnfe, cnfe); |
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148 } |
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149 catch (InstantiationException ie) { |
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150 logger.warn(ie, ie); |
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151 } |
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152 catch (IllegalAccessException iae) { |
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153 logger.warn(iae, iae); |
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154 } |
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155 } |
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156 } |
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157 |
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158 |
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159 /** |
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160 * Initialize all products supported by the current fis. |
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161 */ |
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162 protected void initializeProducts(Node productNode) { |
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163 String productName = (String) XMLUtils.xpath( |
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164 productNode, "@name", XPathConstants.STRING); |
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165 |
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166 NodeList parameterNodes = (NodeList) XMLUtils.xpath( |
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167 productNode, XPATH_PRODUCT_PARAMETER, XPathConstants.NODESET |
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168 ); |
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169 |
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170 if (parameterNodes != null) { |
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171 int items = parameterNodes.getLength(); |
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172 Collection inputParameter = new ArrayList(items); |
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173 |
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174 for (int j = 0; j < items; j++) { |
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175 Node parameterNode = (Node) parameterNodes.item(j); |
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176 String name = (String) XMLUtils.xpath( |
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177 parameterNode, "@name", XPathConstants.STRING); |
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178 String value = (String) XMLUtils.xpath( |
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179 parameterNode, "@value", XPathConstants.STRING); |
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180 |
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181 inputParameter.add(new DefaultInputData(name, value)); |
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182 } |
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183 |
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184 products.put( |
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185 productName, |
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186 new DefaultProduct(productName, inputParameter, this.name) |
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187 ); |
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188 } |
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189 } |
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190 } |
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191 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |