Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/exports/sq/SQOverviewGenerator.java @ 8220:1d3d61c8f596

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Stop stupid propagation of out subtype in generators. What is this? It is not used anyway.
author Sascha L. Teichmann <teichmann@intevation.de>
date Mon, 08 Sep 2014 13:33:39 +0200
parents e4606eae8ea5
children 724081af301c
rev   line source
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4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.exports.sq;
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10
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11 import java.awt.image.BufferedImage;
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12 import java.io.IOException;
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13 import java.io.OutputStream;
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14 import java.util.ArrayList;
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15 import java.util.HashMap;
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16 import java.util.List;
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17 import java.util.Map;
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18
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19 import javax.imageio.ImageIO;
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20 import javax.xml.xpath.XPathConstants;
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21
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22 import org.apache.log4j.Logger;
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23 import org.jfree.chart.ChartRenderingInfo;
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24 import org.jfree.chart.JFreeChart;
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25 import org.w3c.dom.Document;
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26 import org.w3c.dom.Element;
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27 import org.w3c.dom.Node;
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28
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29 import org.dive4elements.artifactdatabase.state.ArtifactAndFacet;
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30 import org.dive4elements.artifactdatabase.state.Settings;
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31 import org.dive4elements.artifacts.Artifact;
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32 import org.dive4elements.artifacts.ArtifactDatabaseException;
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33 import org.dive4elements.artifacts.CallContext;
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34 import org.dive4elements.artifacts.common.ArtifactNamespaceContext;
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35 import org.dive4elements.artifacts.common.utils.XMLUtils;
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36 import org.dive4elements.river.artifacts.context.RiverContext;
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37 import org.dive4elements.river.collections.D4EArtifactCollection;
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38 import org.dive4elements.river.exports.ChartGenerator2;
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39 import org.dive4elements.river.exports.OutGenerator;
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40 import org.dive4elements.river.exports.OutputHelper;
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41 import org.dive4elements.river.themes.ThemeDocument;
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42
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43 public class SQOverviewGenerator
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44 implements OutGenerator
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45 {
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46 private static Logger log = Logger.getLogger(SQOverviewGenerator.class);
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47
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48 public static final String XPATH_CHART_SIZE =
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49 "/art:action/art:attributes/art:size";
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50
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51 protected D4EArtifactCollection collection;
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52
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53 protected Artifact master;
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54
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55 protected Settings settings;
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56
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57 protected Document request;
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58
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59 protected OutputStream out;
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60
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61 protected CallContext context;
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62
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63 protected List<JFreeChart> charts;
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64
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65 protected String outName;
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66
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67 @Override
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68 public void setup(Object config) {
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69 log.debug("SQOverviewGenerator.setup");
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70 }
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71
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72 /**
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73 * Produce output.
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74 * @param artifactAndFacet current facet and artifact.
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75 * @param attr theme for facet
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76 */
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77 @Override
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78 public void doOut(
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79 ArtifactAndFacet artifactAndFacet,
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80 ThemeDocument attr,
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81 boolean visible
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82 ) {
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83 log.debug("doOut()");
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84
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85 // TODO: Why not using outName for this.
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86
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87 String name = artifactAndFacet.getData(context).toString();
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88 if(name != null) {
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89 log.debug("name: " + name);
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90 ChartGenerator2 g =
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91 (ChartGenerator2)RiverContext.getOutGenerator(
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92 context,
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93 name);
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94 /* Make sure master is also set in those */
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95 g.setMasterArtifact(master);
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96
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97 if (g == null) {
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98 log.debug("generator is null.");
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99 return;
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100 }
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101
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102 OutputHelper helper = new OutputHelper(master.identifier());
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103 Document collectionAttribute = collection.getAttribute();
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104
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105 try {
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106 Document cAttr = getAttribute(context, collectionAttribute, name);
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107 g.init(name, request, out, context);
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108
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109 helper.doOut(g, name, name, cAttr, context);
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110 JFreeChart chart = g.generateChart();
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111 chart.removeLegend();
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112 charts.add(chart);
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113 }
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114 catch (IOException e) {
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115 log.warn(e);
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116 }
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117 catch (ArtifactDatabaseException e) {
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118 log.warn(e);
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119 }
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120 }
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121 }
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122
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123 @Override
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124 public void init(String outName, Document request, OutputStream out, CallContext context) {
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125 this.outName = outName;
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126 this.request = request;
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127 this.out = out;
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128 this.context = context;
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129 charts = new ArrayList<JFreeChart>();
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130 }
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131
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132 @Override
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133 public void setMasterArtifact(Artifact master) {
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134 this.master = master;
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135 }
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136
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137 @Override
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138 public void setCollection(D4EArtifactCollection collection) {
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139 this.collection = collection;
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140 }
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141
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142 @Override
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143 public void generate() throws IOException {
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144 log.debug("SQOverviewGenerator.generate");
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145
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146 int[] size = getSize();
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147
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148 if (size == null) {
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149 size = new int[] {400, 600};
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150 }
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151 BufferedImage result =
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152 new BufferedImage(size[0], size[1], BufferedImage.TYPE_INT_RGB);
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153 for (int i = 0, S = charts.size(); i < S; i++) {
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154 log.debug("index: " + i);
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155 JFreeChart chart = charts.get(i);
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156 ChartRenderingInfo info = new ChartRenderingInfo();
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157 BufferedImage img =
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158 chart.createBufferedImage(size[0]/2, size[1]/3, info);
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159 int horPos = 0;
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160 int vertPos = 0;
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161 if (i % 2 == 1) {
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162 horPos = size[0]/2;
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163 }
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164 if (i > 1) {
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165 vertPos = (size[1] / 3) * (i / 2);
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166 }
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167 // TODO: Dispose Graphics object!
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168 result.createGraphics().drawImage(img, horPos, vertPos, null);
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169 }
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170 ImageIO.write(result, "png", out);
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171 }
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172
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173 @Override
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174 public void setSettings(Settings settings) {
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175 this.settings = settings;
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176 }
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177
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178 @Override
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179 public Settings getSettings() {
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180 return this.settings;
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181 }
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182
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183
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184 /**
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185 * Returns the "attribute" (part of description document) for a specific
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186 * output type.
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187 *
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188 * @param context The CallContext object.
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189 * @param attr The xml attribute saved at the collection.
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190 * @param output The name of the desired output type.
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191 *
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192 * @return the attribute for the desired output type.
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193 */
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194 protected Document getAttribute(
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195 CallContext context,
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196 Document attr,
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197 String output)
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198 throws ArtifactDatabaseException
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199 {
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200 log.debug("find specific XML node for Output: " + output);
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201
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202 Map<String, String> vars = new HashMap<String, String>();
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203 vars.put("output", output);
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204
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205 Node out = (Node) XMLUtils.xpath(
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206 attr,
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207 "art:attribute/art:outputs/art:output[@name=$output]",
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208 XPathConstants.NODE,
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209 ArtifactNamespaceContext.INSTANCE,
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210 vars);
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211
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212 if (out != null) {
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213 Document o = XMLUtils.newDocument();
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214 o.appendChild(o.importNode(out, true));
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215
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216 return o;
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217 }
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218
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219 return null;
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220 }
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221
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222
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223 /**
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224 * Returns the size of a chart export as array which has been specified by
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225 * the incoming request document.
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226 *
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227 * @return the size of a chart as [width, height] or null if no width or
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228 * height are given in the request document.
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229 */
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230 protected int[] getSize() {
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231 int[] size = new int[2];
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232
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233 Element sizeEl = (Element)XMLUtils.xpath(
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234 request,
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235 XPATH_CHART_SIZE,
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236 XPathConstants.NODE,
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237 ArtifactNamespaceContext.INSTANCE);
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238
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239 if (sizeEl != null) {
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240 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
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241
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242 String w = sizeEl.getAttributeNS(uri, "width");
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243 String h = sizeEl.getAttributeNS(uri, "height");
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244
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245 if (w.length() > 0 && h.length() > 0) {
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246 try {
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247 size[0] = Integer.parseInt(w);
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248 size[1] = Integer.parseInt(h);
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249 }
45af081061e7 Added overview output for sq relation. Currently the overview generator is
Raimund Renkert <raimund.renkert@intevation.de>
parents:
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250 catch (NumberFormatException nfe) {
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e4606eae8ea5 sed src/**/*.java 's/logger/log/g'
Sascha L. Teichmann <teichmann@intevation.de>
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251 log.warn("Wrong values for chart width/height.");
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45af081061e7 Added overview output for sq relation. Currently the overview generator is
Raimund Renkert <raimund.renkert@intevation.de>
parents:
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252 }
45af081061e7 Added overview output for sq relation. Currently the overview generator is
Raimund Renkert <raimund.renkert@intevation.de>
parents:
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253 }
45af081061e7 Added overview output for sq relation. Currently the overview generator is
Raimund Renkert <raimund.renkert@intevation.de>
parents:
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254 }
45af081061e7 Added overview output for sq relation. Currently the overview generator is
Raimund Renkert <raimund.renkert@intevation.de>
parents:
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255
45af081061e7 Added overview output for sq relation. Currently the overview generator is
Raimund Renkert <raimund.renkert@intevation.de>
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256 return size[0] > 0 && size[1] > 0 ? size : null;
45af081061e7 Added overview output for sq relation. Currently the overview generator is
Raimund Renkert <raimund.renkert@intevation.de>
parents:
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257 }
45af081061e7 Added overview output for sq relation. Currently the overview generator is
Raimund Renkert <raimund.renkert@intevation.de>
parents:
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258 }
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02d5731b43a2 SQ relation: Build a valid SQResult.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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259 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org