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annotate flys-artifacts/src/main/java/de/intevation/flys/collections/AttributeParser.java @ 5329:029b5f5f1dcc

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Little code clean up and possible a NPE fix.
author Sascha L. Teichmann <teichmann@intevation.de>
date Fri, 15 Mar 2013 19:50:53 +0100
parents ef0db530c341
children
rev   line source
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16161de47662 The Attributes of a collection are written into its DESCRIBE now.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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1 package de.intevation.flys.collections;
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2
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3 import java.util.List;
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4 import java.util.Map;
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5
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6 import javax.xml.xpath.XPathConstants;
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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 org.w3c.dom.Document;
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11 import org.w3c.dom.Element;
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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.artifacts.ArtifactNamespaceContext;
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16
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17 import de.intevation.artifactdatabase.state.DefaultOutput;
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18 import de.intevation.artifactdatabase.state.Facet;
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19 import de.intevation.artifactdatabase.state.Output;
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20 import de.intevation.artifactdatabase.state.Settings;
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21
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22 import de.intevation.artifacts.common.utils.XMLUtils;
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23
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59ae2a823e73 Use the Facet.toXML() method to write facet elements into the DESCRIBE document of the Collection.
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24 import de.intevation.flys.artifacts.model.ManagedDomFacet;
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25 import de.intevation.flys.exports.ChartSettings;
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27 /**
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28 * Access parts of the Attribute parts of a FLYSCollections description
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29 * document.
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30 */
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31 public class AttributeParser {
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32
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33 /** Constant XPath that points to the outputmodes of an artifact. */
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34 public static final String XPATH_ARTIFACT_OUTPUTMODES =
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35 "/art:attribute/art:outputs/art:output";
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36
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38 private static Logger logger = Logger.getLogger(AttributeParser.class);
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39
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40
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41 protected Document attributeDocument;
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42
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43 protected CollectionAttribute attribute;
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46 public AttributeParser(Document attributeDocument) {
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47 this.attributeDocument = attributeDocument;
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48 }
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51 public void parse() {
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52 logger.debug("AttributeParser.parse");
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54 attribute = new CollectionAttribute();
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55
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56 NodeList outs = (NodeList) XMLUtils.xpath(
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57 attributeDocument,
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58 XPATH_ARTIFACT_OUTPUTMODES,
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59 XPathConstants.NODESET,
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60 ArtifactNamespaceContext.INSTANCE);
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61
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62 int num = outs != null ? outs.getLength() : 0;
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63
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64 logger.debug("Attribute has " + num + " outputs.");
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65
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66 for (int i = 0; i < num; i++) {
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67 Node out = outs.item(i);
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68
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69 parseOutput(out);
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70 }
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71 }
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72
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73
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74 public CollectionAttribute getCollectionAttribute() {
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75 if (attribute == null) {
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76 parse();
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77 }
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78
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79 return attribute;
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80 }
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81
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82
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83 public Document getAttributeDocument() {
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84 return attributeDocument;
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85 }
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86
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87
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88 public Map<String, Output> getOuts() {
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89 return attribute.getOutputs();
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90 }
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93 /**
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94 * Access all facets.
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95 * @return list of all facets.
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96 */
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97 public List<Facet> getFacets() {
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98 return attribute.getFacets();
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99 }
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100
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101
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102 protected void parseOutput(Node out) {
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103 String name = ((Element)out).getAttribute("name");
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104
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105 if (name.length() == 0) {
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106 logger.warn("No Output name specified. Cancel parsing!");
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107 return;
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108 }
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109
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110 Output o = attribute.getOutput(name);
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111
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112 if (o == null) {
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113 logger.debug("Create new output: " + name);
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114
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115 o = new DefaultOutput(name, null, null);
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116 attribute.addOutput(name, o);
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117 }
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118
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119 parseSettings(out, name);
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120 parseItems(out, name);
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121 }
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122
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123 private static final Node getChild(Element element, String name) {
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124 NodeList children = element.getChildNodes();
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125 for (int i = 0, N = children.getLength(); i < N; ++i) {
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126 Node child = children.item(i);
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127 if (child.getNodeType() == Node.ELEMENT_NODE
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128 && child.getLocalName().equals(name)) {
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129 return child;
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130 }
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131 }
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132 return null;
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133 }
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134
1779
2fe270661b20 Let Output and Attribute Parsers collect Facets during processing.
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135
1994
3e703d134bbe Parse the Settings of each Output during Collection's describe() operation.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1976
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136 protected void parseSettings(Node out, String outname) {
3191
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137 Node settingsNode = getChild((Element)out, "settings");
1994
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138
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139 if (settingsNode == null) {
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140 logger.debug("No Settings found for Output '" + outname + "'");
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141 return;
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142 }
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143
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144 Settings settings = ChartSettings.parse(settingsNode);
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145 attribute.setSettings(outname, settings);
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parents: 1976
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146 }
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147
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148
346
16161de47662 The Attributes of a collection are written into its DESCRIBE now.
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parents:
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149 protected void parseItems(Node out, String outname) {
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150 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
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151 Element element = (Element)out;
346
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152
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153 NodeList themes = element.getElementsByTagNameNS(uri, "facet");
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154
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155 int num = themes.getLength();
346
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156
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parents:
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157 logger.debug("Output has " + num + " themes.");
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parents:
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158
694
68c6c75a6f7c Add index and description of facets to collections describe document.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 638
diff changeset
159 for (int i = 0; i < num; i++) {
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160 Element theme = (Element) themes.item(i);
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161 if (theme.getParentNode() == out) {
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162 attribute.addFacet(outname, new ManagedDomFacet(theme));
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163 }
346
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parents:
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164 }
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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165 }
16161de47662 The Attributes of a collection are written into its DESCRIBE now.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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166 }
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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167 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org