Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/themes/ThemeMapping.java @ 5017:51a353887871

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Tiny doc.
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Tue, 19 Feb 2013 11:23:57 +0100
parents a5f65e8983be
children
rev   line source
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d2a17e990c70 Improved the Themes: we now support special themes for facets which need to match a given pattern string.
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parents:
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1 package de.intevation.flys.themes;
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3 import org.apache.log4j.Logger;
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4
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5 import java.io.Serializable;
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6 import java.util.regex.Matcher;
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7 import java.util.regex.Pattern;
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9 import de.intevation.flys.artifacts.FLYSArtifact;
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11 /**
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12 * Represents mapping to a theme (including conditions).
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13 */
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14 public class ThemeMapping implements Serializable {
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16 /** The logger that is used in this class */
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17 private static Logger logger = Logger.getLogger(ThemeMapping.class);
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18
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19 /** Name from which to map. */
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20 protected String from;
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21
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22 /** Name to which to map. */
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23 protected String to;
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24
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25 /** Given pattern (held against facet description). */
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26 protected String patternStr;
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28 /** Given masterAttr pattern (held against masterartifacts attributes). */
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29 protected String masterAttr;
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31 /** Given output for which mapping is valid. */
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32 protected String output;
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34 protected Pattern pattern;
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37 public ThemeMapping(String from, String to) {
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38 this(from, to, null, null, null);
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39 }
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42 public ThemeMapping(
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43 String from,
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44 String to,
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45 String patternStr,
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46 String masterAttr,
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47 String output)
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48 {
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49 this.from = from;
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50 this.to = to;
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51 this.patternStr = patternStr;
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52 this.masterAttr = masterAttr;
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53 this.output = output;
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54
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55 this.pattern = Pattern.compile(patternStr);
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56 }
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57
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58
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59 public String getFrom() {
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60 return from;
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61 }
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62
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64 /**
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65 * Get name of theme that is mapped to.
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66 */
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67 public String getTo() {
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68 return to;
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69 }
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70
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72 /**
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73 * Get pattern.
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74 */
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75 public String getPatternStr() {
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76 return patternStr;
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77 }
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78
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80 /**
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81 * Match regular expression against text.
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82 *
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83 * @param text string to be matched against.
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84 * @return true if pattern matches text or pattern is empty.
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85 */
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86 public boolean applyPattern(String text) {
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87 if (patternStr == null || patternStr.length() == 0) {
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88 return true;
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89 }
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90 Matcher m = pattern.matcher(text);
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91
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92 if (m.matches()) {
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93 logger.debug("Pattern matches: " + text);
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94 return true;
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95 }
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96 else {
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97 logger.debug(
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98 "Pattern '"+ text + "' does not match: " + this.patternStr);
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99 return false;
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100 }
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101 }
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102
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103
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104 /**
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105 * Inspects Artifacts data given the masterAttr-condition.
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106 *
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107 * The only condition implemented so far is 'key==value', for which
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108 * the Artifacts data with name "key" has to be of value "value" in order
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109 * for true to be returned.
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110 *
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111 * @param artifact Artifact of which to inspect data.
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112 * @return true if no condition is specified or condition is met.
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113 */
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114 public boolean masterAttrMatches(FLYSArtifact artifact) {
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115 if (masterAttr == null || masterAttr.length() == 0) {
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116 return true;
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117 }
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118
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119 // Operator split.
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120 String[] parts = masterAttr.split("==");
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121 if (parts.length != 2) {
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122 logger.error("ThemeMapping could not parse masterAttr.-condition:_"
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123 + masterAttr + "_");
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124 return false;
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125 }
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126
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127 // Test.
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128 if (artifact.getDataAsString(parts[0]).equals(parts[1])) {
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129 logger.debug("Matches master Attribute.");
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130 return true;
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131 }
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132 else {
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133 logger.debug("Does not match master Attribute.");
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134 return false;
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135 }
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136 }
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137
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138
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139 /**
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140 * Returns true if no output condition exists, or the condition is met
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141 * in parameter output.
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142 */
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143 public boolean outputMatches(String output) {
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144 if (this.output == null || this.output.length() == 0) {
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145 return true;
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146 }
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147
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148 if (this.output.equals(output)) {
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149 logger.debug("Output matches this mapping: " + output);
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150 return true;
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151 }
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152 else {
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153 logger.debug("Output '"+ output +"' does not match: "+ this.output);
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154 return false;
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155 }
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156 }
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157 }
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158 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org