Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/artifacts/GNVProductArtifactFactory.java @ 478:0e0c64c821dc

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Added support to step back to the point for choosing a product. gnv-artifacts/trunk@547 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Fri, 15 Jan 2010 18:21:49 +0000
parents
children d47b478e662b
rev   line source
478
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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 import java.util.Set;
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8
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9 import javax.xml.xpath.XPathConstants;
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10
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11 import org.w3c.dom.Document;
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12 import org.w3c.dom.Element;
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13 import org.w3c.dom.Node;
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14 import org.w3c.dom.NodeList;
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15
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16 import de.intevation.artifactdatabase.DefaultArtifactFactory;
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17 import de.intevation.artifactdatabase.ProxyArtifact;
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18 import de.intevation.artifactdatabase.XMLUtils;
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19 import de.intevation.artifacts.Artifact;
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20 import de.intevation.artifacts.ArtifactFactory;
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21 import de.intevation.gnv.artifacts.fis.SelectProductArtifact;
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22 import de.intevation.gnv.artifacts.fis.product.DefaultProduct;
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23 import de.intevation.gnv.state.DefaultInputData;
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24 import de.intevation.gnv.state.InputData;
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25
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26 import org.apache.log4j.Logger;
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27
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28 /**
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29 * @author Ingo Weinzierl <ingo.weinzierl@intevation.de>
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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 public GNVProductArtifactFactory() {
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53 }
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54
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55 @Override
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56 public Artifact createArtifact(String identifier, Object context) {
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57
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58 // create a SelectProductArtifact for initial product selection
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59 Artifact artifact = super.createArtifact(identifier, context);
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60
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61 if (artifact instanceof ProxyArtifact) {
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62
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63 SelectProductArtifact select = new SelectProductArtifact();
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64 select.setProducts(products);
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65 select.setup(identifier, this, context);
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66
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67 ((ProxyArtifact) artifact).setProxied(select);
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68 }
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69
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70 return artifact;
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71 }
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72
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73 @Override
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74 public void setup(Document document, Node factoryNode) {
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75 super.setup(document, factoryNode);
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76
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77 String xpath = XPATH_PRODUCT_ARTIFACT.replace(XPATH_REPLACE_NAME, name);
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78 Node artifact = (Node) XMLUtils.xpath(
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79 document, xpath, XPathConstants.NODE);
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80
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81 NodeList productNodes = (NodeList) XMLUtils.xpath(
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82 artifact, XPATH_PRODUCT, XPathConstants.NODESET);
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83
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84 if (productNodes == null) {
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85 logger.warn("No products found for fis: " + name);
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86 return;
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87 }
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88
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89 int productLength = productNodes.getLength();
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90
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91 if (productLength != 0) {
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92 productFactories = new HashMap(productLength);
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93 products = new HashMap(productLength);
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94
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95 parseProductFactories(document, productNodes);
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96 }
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97 }
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98
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99
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100 public ArtifactFactory getArtifactFactoryByName(String name) {
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101 return (ArtifactFactory) productFactories.get(name);
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102 }
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103
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104
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105 protected void parseProductFactories(Document document, NodeList products) {
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106 int items = products.getLength();
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107
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108 for(int i = 0; i < items; i++) {
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109
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110 try {
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111 Node product = products.item(i);
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112
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113 String name = (String) XMLUtils.xpath(
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114 product, XPATH_PRODUCT_NAME, XPathConstants.STRING);
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115
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116 Node factoryNode = (Node) XMLUtils.xpath(
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117 product, XPATH_PRODUCT_FACTORY, XPathConstants.NODE);
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118
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119 String factoryClass = factoryNode.getTextContent();
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120
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121 if (factoryClass == null || factoryClass.equals("")) {
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122 logger.warn("No artifact factory class found for " + name);
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123 continue;
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124 }
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125
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126 Class cls = Class.forName(factoryClass);
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127 ArtifactFactory factory = (ArtifactFactory) cls.newInstance();
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128 factory.setup(document, factoryNode);
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129
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130 productFactories.put(name, factory);
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131 initializeProducts(product);
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132 }
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133 catch (ClassNotFoundException cnfe) {
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134 logger.warn(cnfe, cnfe);
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135 }
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136 catch (InstantiationException ie) {
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137 logger.warn(ie, ie);
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138 }
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139 catch (IllegalAccessException iae) {
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140 logger.warn(iae, iae);
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141 }
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142 }
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143 }
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144
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145
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146 protected void initializeProducts(Node productNode) {
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147 String productName = (String) XMLUtils.xpath(
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148 productNode, "@name", XPathConstants.STRING);
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149
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150 NodeList parameterNodes = (NodeList) XMLUtils.xpath(
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151 productNode, XPATH_PRODUCT_PARAMETER, XPathConstants.NODESET
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152 );
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153
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154 if (parameterNodes != null) {
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155 int items = parameterNodes.getLength();
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156 Collection inputParameter = new ArrayList(items);
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157
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158 for (int j = 0; j < items; j++) {
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159 Node parameterNode = (Node) parameterNodes.item(j);
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160 String name = (String) XMLUtils.xpath(
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161 parameterNode, "@name", XPathConstants.STRING);
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162 String value = (String) XMLUtils.xpath(
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163 parameterNode, "@value", XPathConstants.STRING);
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164
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165 inputParameter.add(new DefaultInputData(name, value));
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166 }
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167
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168 products.put(
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169 productName,
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170 new DefaultProduct(productName, inputParameter, this.name)
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171 );
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172 }
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173 }
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174 }
http://dive4elements.wald.intevation.org