Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/exports/AbstractExporter.java @ 2176:65dac9cf6ff5

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Issue 138. PDF output for waterlevel calculation result. flys-artifacts/trunk@3774 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Raimund Renkert <raimund.renkert@intevation.de>
date Thu, 26 Jan 2012 15:38:46 +0000
parents 0318fa6f0844
children 5d1ba04d2f68
rev   line source
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1 package de.intevation.flys.exports;
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2
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3 import java.io.IOException;
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4 import java.io.OutputStream;
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5 import java.io.OutputStreamWriter;
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6
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7 import org.w3c.dom.Document;
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8
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9 import org.apache.log4j.Logger;
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10
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11 import au.com.bytecode.opencsv.CSVWriter;
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12
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13 import de.intevation.artifacts.Artifact;
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14 import de.intevation.artifacts.CallContext;
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15
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16 import de.intevation.artifactdatabase.state.ArtifactAndFacet;
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17 import de.intevation.artifactdatabase.state.Settings;
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19 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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20 import de.intevation.artifacts.common.utils.XMLUtils;
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21
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22 import de.intevation.flys.artifacts.resources.Resources;
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23
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24
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25 /**
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26 * An abstract exporter that implements some basic methods for exporting data of
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27 * artifacts.
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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 abstract class AbstractExporter implements OutGenerator {
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32
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33 /** The logger used in this exporter.*/
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34 private static Logger logger = Logger.getLogger(AbstractExporter.class);
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35
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36
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37 /** The name of the CSV facet which triggers the CSV creation. */
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38 public static final String FACET_CSV = "csv";
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39
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40 /** The name of the PDF facet which triggers the PDF creation. */
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41 public static final String FACET_PDF = "pdf";
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42
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43 /** The default charset for the CSV export. */
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44 public static final String DEFAULT_CSV_CHARSET = "UTF-8";
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45
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46 /** The default separator for the CSV export. */
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47 public static final char DEFAULT_CSV_SEPARATOR = ',';
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48
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49 /** XPath that points to the desired export facet. */
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50 public static final String XPATH_FACET = "/art:action/@art:type";
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51
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52
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53 /** The document of the incoming out() request. */
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54 protected Document request;
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55
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56 /** The output stream where the data should be written to. */
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57 protected OutputStream out;
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58
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59 /** The CallContext object. */
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60 protected CallContext context;
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61
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62 /** The selected facet. */
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63 protected String facet;
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64
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65 /** The master artifact. */
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66 protected Artifact master;
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67
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68
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69 /**
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70 * Concrete subclasses need to use this method to write their special data
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71 * objects into the CSV document.
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72 *
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73 * @param writer The CSVWriter.
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74 */
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75 protected abstract void writeCSVData(CSVWriter writer);
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76
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77
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78 /**
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79 * Concrete subclasses need to use this method to write their special data
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80 * objects into the PDF document.
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81 */
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82 protected abstract void writePDF(OutputStream out);
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83
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84
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85 /**
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86 * This method enables concrete subclasses to collected its own special
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87 * data.
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88 *
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89 * @param artifacts The artifact that stores the data that has to be
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90 * exported.
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91 */
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92 protected abstract void addData(Object data);
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93
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94 @Override
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95 public void init(Document request, OutputStream out, CallContext context) {
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96 logger.debug("AbstractExporter.init");
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97
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98 this.request = request;
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99 this.out = out;
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100 this.context = context;
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101 }
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102
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103
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104 @Override
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105 public void setMasterArtifact(Artifact master) {
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106 this.master = master;
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107 }
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108
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109
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110 /**
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111 * This doOut() just collects the data of multiple artifacts. Therefore, it
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112 * makes use of the addData() method which enables concrete subclasses to
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113 * store its data on its own. The real output creation takes place in the
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114 * concrete generate() methods.
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115 *
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116 * @param artifact The artifact.
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117 * @param facet The facet to add - NOTE: the facet needs to fit to the first
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118 * facet inserted into this exporter. Otherwise this artifact/facet is
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119 * skipped.
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120 * @param attr The attr document.
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121 */
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122 @Override
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123 public void doOut(
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124 ArtifactAndFacet artifactFacet,
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125 Document attr,
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126 boolean visible
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127 ) {
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Felix Wolfsteller <felix.wolfsteller@intevation.de>
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128 String name = artifactFacet.getFacetName();
391
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129
695
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130 logger.debug("AbstractExporter.doOut: " + name);
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131
45cd58a2a2bb OutGenerators doOut() takes a facet object now instead of just its name.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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diff changeset
132 if (!isFacetValid(name)) {
45cd58a2a2bb OutGenerators doOut() takes a facet object now instead of just its name.
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133 logger.warn("Facet '" + name + "' not valid. No output created!");
391
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134 return;
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135 }
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136
2038
f73036b991e2 Bugfix: repaired broken named values in exports - the last solution had bad side effects.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2035
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137 addData(artifactFacet.getData(context));
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138 }
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139
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140
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
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141 /**
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142 * Generates an export based on a specified facet.
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
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143 */
710
cded0924193d Added generator and facet for error reports.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 701
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144 @Override
391
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145 public void generate()
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146 throws IOException
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147 {
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148 logger.debug("AbstractExporter.generate");
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149
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150 if (facet != null && facet.equals(FACET_CSV)) {
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151 generateCSV();
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152 }
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Raimund Renkert <raimund.renkert@intevation.de>
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153 else if (facet != null && facet.equals(FACET_PDF)) {
65dac9cf6ff5 Issue 138.
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154 generatePDF();
65dac9cf6ff5 Issue 138.
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155 }
391
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156 else {
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157 throw new IOException("invalid facet for exporter.");
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158 }
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
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159 }
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160
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
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161
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
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162 /**
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163 * Determines if the desired facet is valid for this exporter. If no facet
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164 * is currently set, <i>facet</i> is set.
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165 *
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
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166 * @param facet The desired facet.
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167 *
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168 * @return true, if <i>facet</i> is valid, otherwise false.
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169 */
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170 protected boolean isFacetValid(String facet) {
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171 logger.debug("AbstractExporter.isFacetValid");
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172
445
a7947972fdeb Added a new class that supports formatters for different types of data.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 418
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173 String thisFacet = getFacet();
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174
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parents: 418
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175 if (thisFacet == null || thisFacet.length() == 0) {
391
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176 return false;
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177 }
445
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178 else if (facet == null || facet.length() == 0) {
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179 return false;
391
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180 }
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181 else {
445
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182 return thisFacet.equals(facet);
391
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183 }
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184 }
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185
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186
445
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
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187 /**
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
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188 * Returns the name of the desired facet.
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
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189 *
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
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190 * @return the name of the desired facet.
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parents: 418
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191 */
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 418
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192 protected String getFacet() {
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 418
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193 if (facet == null) {
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 418
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194 facet = getFacetFromRequest();
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 418
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195 }
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parents: 418
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196
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197 return facet;
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parents: 418
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198 }
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parents: 418
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199
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 418
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200
a7947972fdeb Added a new class that supports formatters for different types of data.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 418
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201 /**
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 418
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202 * Extracts the name of the requested facet from request document.
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 418
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203 *
a7947972fdeb Added a new class that supports formatters for different types of data.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 418
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204 * @return the name of the requested facet.
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parents: 418
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205 */
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206 protected String getFacetFromRequest() {
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parents: 418
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207 return XMLUtils.xpathString(
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parents: 418
diff changeset
208 request, XPATH_FACET, ArtifactNamespaceContext.INSTANCE);
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parents: 418
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209 }
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parents: 418
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210
416
340dc41a7ea3 The CSV exports will now have headers.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 412
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211
340dc41a7ea3 The CSV exports will now have headers.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 412
diff changeset
212 protected String msg(String key, String def) {
340dc41a7ea3 The CSV exports will now have headers.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 412
diff changeset
213 return Resources.getMsg(context.getMeta(), key, def);
340dc41a7ea3 The CSV exports will now have headers.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 412
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214 }
340dc41a7ea3 The CSV exports will now have headers.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 412
diff changeset
215
340dc41a7ea3 The CSV exports will now have headers.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 412
diff changeset
216
391
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parents:
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217 /**
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parents:
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218 * This method starts CSV creation. It makes use of writeCSVData() which has
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parents:
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219 * to be implemented by concrete subclasses.
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parents:
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220 */
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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221 protected void generateCSV()
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parents:
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222 throws IOException
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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223 {
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parents:
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224 logger.info("AbstractExporter.generateCSV");
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225
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parents:
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226 CSVWriter writer = new CSVWriter(
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
227 new OutputStreamWriter(
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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228 out,
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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229 DEFAULT_CSV_CHARSET),
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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230 DEFAULT_CSV_SEPARATOR);
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parents:
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231
5d6988836f01 Added an exporter to export the computed data of a duration curve.
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parents:
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232 writeCSVData(writer);
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parents:
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233
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parents:
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234 writer.close();
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
235 }
1979
a7c437c9547e Added a getSettings() operation to OutGenerator - FLYSArtifactCollection will now evaluate all available Outputs and create initial Settings using OutGenerators if the Settings for an Output is missing.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1948
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236
a7c437c9547e Added a getSettings() operation to OutGenerator - FLYSArtifactCollection will now evaluate all available Outputs and create initial Settings using OutGenerators if the Settings for an Output is missing.
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parents: 1948
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237
a7c437c9547e Added a getSettings() operation to OutGenerator - FLYSArtifactCollection will now evaluate all available Outputs and create initial Settings using OutGenerators if the Settings for an Output is missing.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1948
diff changeset
238 /**
2176
65dac9cf6ff5 Issue 138.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 2047
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239 * This method starts PDF creation.
65dac9cf6ff5 Issue 138.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 2047
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240 */
65dac9cf6ff5 Issue 138.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 2047
diff changeset
241 protected void generatePDF()
65dac9cf6ff5 Issue 138.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 2047
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242 throws IOException
65dac9cf6ff5 Issue 138.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 2047
diff changeset
243 {
65dac9cf6ff5 Issue 138.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 2047
diff changeset
244 logger.info("AbstractExporter.generatePDF");
65dac9cf6ff5 Issue 138.
Raimund Renkert <raimund.renkert@intevation.de>
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245 writePDF(this.out);
65dac9cf6ff5 Issue 138.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 2047
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246 }
65dac9cf6ff5 Issue 138.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 2047
diff changeset
247
65dac9cf6ff5 Issue 138.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 2047
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248
65dac9cf6ff5 Issue 138.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 2047
diff changeset
249 /**
1979
a7c437c9547e Added a getSettings() operation to OutGenerator - FLYSArtifactCollection will now evaluate all available Outputs and create initial Settings using OutGenerators if the Settings for an Output is missing.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1948
diff changeset
250 * Returns an instance of <i>EmptySettings</i> currently!
a7c437c9547e Added a getSettings() operation to OutGenerator - FLYSArtifactCollection will now evaluate all available Outputs and create initial Settings using OutGenerators if the Settings for an Output is missing.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1948
diff changeset
251 *
a7c437c9547e Added a getSettings() operation to OutGenerator - FLYSArtifactCollection will now evaluate all available Outputs and create initial Settings using OutGenerators if the Settings for an Output is missing.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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diff changeset
252 * @return an instance of <i>EmptySettings</i>.
a7c437c9547e Added a getSettings() operation to OutGenerator - FLYSArtifactCollection will now evaluate all available Outputs and create initial Settings using OutGenerators if the Settings for an Output is missing.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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253 */
a7c437c9547e Added a getSettings() operation to OutGenerator - FLYSArtifactCollection will now evaluate all available Outputs and create initial Settings using OutGenerators if the Settings for an Output is missing.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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diff changeset
254 public Settings getSettings() {
a7c437c9547e Added a getSettings() operation to OutGenerator - FLYSArtifactCollection will now evaluate all available Outputs and create initial Settings using OutGenerators if the Settings for an Output is missing.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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diff changeset
255 return new EmptySettings();
a7c437c9547e Added a getSettings() operation to OutGenerator - FLYSArtifactCollection will now evaluate all available Outputs and create initial Settings using OutGenerators if the Settings for an Output is missing.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1948
diff changeset
256 }
2047
0318fa6f0844 Make use of first attributes specified in the ChartSettings. NOTE: work is still in progress.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2038
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257
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258
0318fa6f0844 Make use of first attributes specified in the ChartSettings. NOTE: work is still in progress.
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259 /**
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260 * This method is not implemented. Override it in subclasses if those need a
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261 * <i>Settings</i> object.
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262 */
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263 public void setSettings(Settings settings) {
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264 // do nothing
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265 }
391
5d6988836f01 Added an exporter to export the computed data of a duration curve.
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266 }
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267 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org