Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/artifacts/datacage/templating/FunctionResolver.java @ 7382:420eb5a5fde4
Datacage: Add function dc:find-all(needle, haystack).
Finds all matches for needle in haystack and results them als a list of strings.
Example:
dc:find-all("\d{4}", "1919 1291 1299 3029")
returns
("1919", "1291, "1299", "3029")
author | Sascha L. Teichmann <teichmann@intevation.de> |
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date | Fri, 18 Oct 2013 18:15:33 +0200 |
parents | 1dff8e71c4d6 |
children | 36a194156f15 |
rev | line source |
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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.artifacts.datacage.templating; |
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10 |
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11 import java.text.SimpleDateFormat; |
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12 import java.util.ArrayList; |
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13 import java.util.Collection; |
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Datacage: Add dc:all-state-successors() to enable predicates like dc:contains(dc:all-state-successors($artifact-name, $current-state-id), 'state.winfo.calculation_mode') which recursively collects all successor state ids an check for containment.
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14 import java.util.Collections; |
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15 import java.util.Date; |
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16 import java.util.List; |
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17 import java.util.Map; |
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18 import java.util.HashMap; |
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19 import java.util.Set; |
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20 import java.util.regex.Matcher; |
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21 import java.util.regex.Pattern; |
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22 |
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23 import java.lang.reflect.InvocationTargetException; |
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24 import java.lang.reflect.Method; |
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25 |
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26 import javax.xml.namespace.QName; |
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27 |
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28 import javax.xml.xpath.XPathFunction; |
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29 import javax.xml.xpath.XPathFunctionException; |
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30 import javax.xml.xpath.XPathFunctionResolver; |
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31 |
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32 import org.apache.log4j.Logger; |
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33 import org.dive4elements.artifactdatabase.transition.TransitionEngine; |
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34 import org.dive4elements.artifacts.GlobalContext; |
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35 import org.dive4elements.river.artifacts.context.RiverContext; |
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36 import org.dive4elements.river.artifacts.context.RiverContextFactory; |
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37 |
4594 | 38 |
39 /** Resolves functions (e.g. dc:contains) in Datacage/Meta-Data system. */ | |
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40 public class FunctionResolver |
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41 implements XPathFunctionResolver |
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42 { |
4594 | 43 /** Home logger. */ |
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44 private static Logger log = Logger.getLogger(FunctionResolver.class); |
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45 |
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46 public static final String FUNCTION_NAMESPACE_URI = "dc"; |
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47 |
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48 public static final double FAR_AWAY = 99999d; |
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49 |
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50 protected static final class Entry { |
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51 |
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52 Entry next; |
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53 XPathFunction function; |
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54 int arity; |
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55 |
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56 public Entry(Entry next, XPathFunction function, int arity) { |
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57 this.next = next; |
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58 this.function = function; |
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59 this.arity = arity; |
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60 } |
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61 |
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62 XPathFunction find(int arity) { |
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63 Entry current = this; |
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64 while (current != null) { |
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65 if (current.arity == arity) { |
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66 return current.function; |
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67 } |
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68 current = current.next; |
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69 } |
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70 return null; |
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71 } |
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72 } // class Entry |
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73 |
4594 | 74 /** List of functions. */ |
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75 protected Map<String, Entry> functions; |
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76 |
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77 protected Builder.BuildHelper buildHelper; |
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78 |
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79 |
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80 public FunctionResolver() { |
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81 this(null); |
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82 } |
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83 |
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84 public FunctionResolver(Builder.BuildHelper buildHelper) { |
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85 this.buildHelper = buildHelper; |
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86 |
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87 functions = new HashMap<String, Entry>(); |
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88 |
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89 addFunction("contains", 2, new XPathFunction() { |
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90 @Override |
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91 public Object evaluate(List args) throws XPathFunctionException { |
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92 return contains(args); |
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93 } |
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94 }); |
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95 |
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96 addFunction("fromValue", 3, new XPathFunction() { |
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97 @Override |
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98 public Object evaluate(List args) throws XPathFunctionException { |
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99 return fromValue(args); |
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100 } |
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101 }); |
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102 |
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103 addFunction("toValue", 3, new XPathFunction() { |
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104 @Override |
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105 public Object evaluate(List args) throws XPathFunctionException { |
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106 return toValue(args); |
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107 } |
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108 }); |
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109 |
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110 addFunction("replace", 3, new XPathFunction() { |
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111 @Override |
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112 public Object evaluate(List args) throws XPathFunctionException { |
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113 return replace(args); |
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114 } |
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115 }); |
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116 |
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117 addFunction("replace-all", 3, new XPathFunction() { |
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118 @Override |
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119 public Object evaluate(List args) throws XPathFunctionException { |
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120 return replaceAll(args); |
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121 } |
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122 }); |
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123 |
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124 addFunction("has-result", 0, new XPathFunction() { |
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125 @Override |
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126 public Object evaluate(List args) throws XPathFunctionException { |
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127 return FunctionResolver.this.buildHelper.hasResult(); |
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128 } |
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129 }); |
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130 |
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131 addFunction("group-key", 0, new XPathFunction() { |
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132 @Override |
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133 public Object evaluate(List args) throws XPathFunctionException { |
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134 return FunctionResolver.this.buildHelper.getGroupKey(); |
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135 } |
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136 }); |
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137 |
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138 addFunction("date-format", 2, new XPathFunction() { |
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139 @Override |
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140 public Object evaluate(List args) throws XPathFunctionException { |
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141 return dateFormat(args); |
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142 } |
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143 }); |
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144 |
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145 addFunction("dump-variables", 0, new XPathFunction() { |
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146 @Override |
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147 public Object evaluate(List args) throws XPathFunctionException { |
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148 return FunctionResolver.this.buildHelper.frames.dump(); |
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149 } |
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150 }); |
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151 |
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152 addFunction("get", 1, new XPathFunction() { |
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153 @Override |
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154 public Object evaluate(List args) throws XPathFunctionException { |
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155 Object o = args.get(0); |
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156 if (o instanceof String) { |
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157 return FunctionResolver.this.buildHelper.frames.getNull( |
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158 (String)o, StackFrames.NULL); |
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159 } |
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160 return StackFrames.NULL; |
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161 } |
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162 }); |
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163 |
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164 addFunction("all-state-successors", 2, new XPathFunction() { |
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165 @Override |
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166 public Object evaluate(List args) throws XPathFunctionException { |
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167 Object artifactName = args.get(0); |
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168 Object stateId = args.get(1); |
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169 |
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170 return artifactName instanceof String |
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171 && stateId instanceof String |
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172 ? allStateSuccessors((String)artifactName, (String)stateId) |
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173 : Collections.<String>emptySet(); |
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174 } |
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175 }); |
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176 |
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177 addFunction("find-all", 2, new XPathFunction() { |
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178 @Override |
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179 public Object evaluate(List args) throws XPathFunctionException { |
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180 Object needle = args.get(0); |
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181 Object haystack = args.get(1); |
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182 return haystack instanceof String |
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183 && needle instanceof String |
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184 ? findAll((String)needle, (String)haystack) |
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185 : Collections.<String>emptyList(); |
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186 } |
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187 }); |
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188 } |
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189 |
4594 | 190 /** |
191 * Create a new function. | |
192 * @param name Name of the function. | |
193 * @param arity Number of arguments for function. | |
194 * @param function the function itself. | |
195 */ | |
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196 public void addFunction(String name, int arity, XPathFunction function) { |
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197 Entry entry = functions.get(name); |
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198 if (entry == null) { |
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199 entry = new Entry(null, function, arity); |
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200 functions.put(name, entry); |
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201 } |
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202 else { |
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203 Entry newEntry = new Entry(entry.next, function, arity); |
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204 entry.next = newEntry; |
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205 } |
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206 } |
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207 |
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208 @Override |
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209 public XPathFunction resolveFunction(QName functionName, int arity) { |
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210 |
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211 if (!functionName.getNamespaceURI().equals(FUNCTION_NAMESPACE_URI)) { |
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212 return null; |
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213 } |
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214 |
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215 Entry entry = functions.get(functionName.getLocalPart()); |
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216 return entry != null |
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217 ? entry.find(arity) |
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218 : null; |
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219 } |
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220 |
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221 /** Implementation of case-ignoring dc:contains. */ |
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222 public Object contains(List args) throws XPathFunctionException { |
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223 Object haystack = args.get(0); |
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224 Object needle = args.get(1); |
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225 |
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226 if (needle instanceof String && !(haystack instanceof String)) { |
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227 needle = ((String)needle).toUpperCase(); |
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228 } |
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229 |
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230 try { |
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231 if (haystack instanceof Collection) { |
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232 return Boolean.valueOf( |
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233 ((Collection)haystack).contains(needle)); |
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234 } |
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235 |
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236 if (haystack instanceof Map) { |
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237 return Boolean.valueOf( |
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238 ((Map)haystack).containsKey(needle)); |
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239 } |
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240 |
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241 if (haystack instanceof Object []) { |
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242 for (Object straw: (Object [])haystack) { |
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243 if (straw.equals(needle)) { |
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244 return Boolean.TRUE; |
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245 } |
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246 } |
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247 } |
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248 |
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249 if (haystack instanceof String && needle instanceof String) { |
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250 String h = (String)haystack; |
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251 String n = (String)needle; |
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252 return h.contains(n); |
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253 } |
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254 |
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255 return Boolean.FALSE; |
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256 } |
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257 catch (Exception e) { |
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258 log.error(e); |
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259 throw new XPathFunctionException(e); |
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260 } |
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261 } |
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262 |
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263 /** Implementation for getting the minimum value of location or distance |
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264 * dc:fromValue. |
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265 */ |
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266 public Object fromValue(List args) throws XPathFunctionException { |
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267 Object mode = args.get(0); |
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268 Object locations = args.get(1); |
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269 Object from = args.get(2); |
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270 |
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271 if ((mode instanceof String && mode.equals("location")) || |
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272 (locations instanceof String && !((String)locations).isEmpty())) { |
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273 if (!(locations instanceof String)) { |
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274 return -FAR_AWAY; |
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275 } |
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276 String loc = ((String)locations).replace(" ", ""); |
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277 String[] split = loc.split(","); |
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278 if (split.length < 1) { |
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279 return -FAR_AWAY; |
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280 } |
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281 try { |
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282 double min = Double.parseDouble(split[0]); |
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283 for (int i = 1; i < split.length; ++i) { |
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284 double v = Double.parseDouble(split[i]); |
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285 if (v < min) { |
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286 min = v; |
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287 } |
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288 } |
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289 return min; |
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290 } |
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291 catch (NumberFormatException nfe) { |
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292 return -FAR_AWAY; |
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293 } |
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294 } |
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295 else { |
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296 if (!(from instanceof String)) { |
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297 return -FAR_AWAY; |
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298 } |
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299 String f = (String)from; |
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300 try { |
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301 return Double.parseDouble(f); |
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302 } |
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303 catch(NumberFormatException nfe) { |
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304 return -FAR_AWAY; |
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305 } |
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306 } |
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307 } |
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308 |
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309 /** Implementation for getting the maximum value of location or distance |
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310 * dc:toValue. |
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311 */ |
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312 public Object toValue(List args) throws XPathFunctionException { |
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313 Object mode = args.get(0); |
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314 Object locations = args.get(1); |
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315 Object to = args.get(2); |
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316 |
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317 if ((mode instanceof String && mode.equals("location")) || |
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318 (locations instanceof String && !((String)locations).isEmpty())) { |
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319 if (!(locations instanceof String)) { |
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320 return FAR_AWAY; |
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321 } |
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322 try { |
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323 String loc = ((String)locations).replace(" ", ""); |
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324 String[] split = loc.split(","); |
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325 if (split.length < 1) { |
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326 return FAR_AWAY; |
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327 } |
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328 double max = Double.parseDouble(split[0]); |
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329 for (int i = 1; i < split.length; ++i) { |
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330 double v = Double.parseDouble(split[i]); |
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331 if (v > max) { |
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332 max = v; |
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333 } |
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334 } |
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335 return max; |
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336 } |
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337 catch (NumberFormatException nfe) { |
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338 return FAR_AWAY; |
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339 } |
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340 } |
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Fix km filtering in Datacage, we default to mode distance now
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341 else { |
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342 if (!(to instanceof String)) { |
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343 return FAR_AWAY; |
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344 } |
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345 else { |
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346 String t = (String)to; |
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347 try { |
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348 return Double.parseDouble(t); |
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349 } |
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350 catch (NumberFormatException nfe) { |
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351 return FAR_AWAY; |
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352 } |
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353 } |
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354 } |
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355 } |
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356 |
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357 /** Implementation for doing a string replace |
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358 * dc:replace |
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359 */ |
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360 public Object replace(List args) throws XPathFunctionException { |
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361 Object haystack = args.get(0); |
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362 Object needle = args.get(1); |
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363 Object replacement = args.get(2); |
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364 |
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365 if (needle instanceof String |
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Datacage: Added function dc:replace-all(haystack, needle, replacement) to do regular expression replacements. Mapped to Java's String haystack.replaceAll(needle, replacement).
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366 && haystack instanceof String |
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367 && replacement instanceof String) { |
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368 return ((String)haystack).replace( |
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369 (String)needle, (String)replacement); |
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370 } |
6126
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371 return haystack; |
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372 } |
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373 |
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Datacage: Added function dc:replace-all(haystack, needle, replacement) to do regular expression replacements. Mapped to Java's String haystack.replaceAll(needle, replacement).
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374 /** Implementation for doing a string replace |
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Datacage: Added function dc:replace-all(haystack, needle, replacement) to do regular expression replacements. Mapped to Java's String haystack.replaceAll(needle, replacement).
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375 * dc:replace-all |
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Datacage: Added function dc:replace-all(haystack, needle, replacement) to do regular expression replacements. Mapped to Java's String haystack.replaceAll(needle, replacement).
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376 */ |
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377 public Object replaceAll(List args) throws XPathFunctionException { |
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378 Object haystack = args.get(0); |
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Datacage: Added function dc:replace-all(haystack, needle, replacement) to do regular expression replacements. Mapped to Java's String haystack.replaceAll(needle, replacement).
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379 Object needle = args.get(1); |
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380 Object replacement = args.get(2); |
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381 |
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Datacage: Added function dc:replace-all(haystack, needle, replacement) to do regular expression replacements. Mapped to Java's String haystack.replaceAll(needle, replacement).
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382 if (needle instanceof String |
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Datacage: Added function dc:replace-all(haystack, needle, replacement) to do regular expression replacements. Mapped to Java's String haystack.replaceAll(needle, replacement).
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383 && haystack instanceof String |
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Datacage: Added function dc:replace-all(haystack, needle, replacement) to do regular expression replacements. Mapped to Java's String haystack.replaceAll(needle, replacement).
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384 && replacement instanceof String) { |
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385 return ((String)haystack).replaceAll( |
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Datacage: Added function dc:replace-all(haystack, needle, replacement) to do regular expression replacements. Mapped to Java's String haystack.replaceAll(needle, replacement).
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386 (String)needle, (String)replacement); |
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387 } |
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Datacage: Added function dc:replace-all(haystack, needle, replacement) to do regular expression replacements. Mapped to Java's String haystack.replaceAll(needle, replacement).
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388 return haystack; |
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389 } |
5608
62513c9183ba
Datacage: Added dc:date-format to function resolver. Args: dc:date-format(pattern, date)
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390 |
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Datacage: Added dc:date-format to function resolver. Args: dc:date-format(pattern, date)
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391 public Object dateFormat(List args) throws XPathFunctionException { |
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Datacage: Added dc:date-format to function resolver. Args: dc:date-format(pattern, date)
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392 Object pattern = args.get(0); |
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Datacage: Added dc:date-format to function resolver. Args: dc:date-format(pattern, date)
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393 Object date = args.get(1); |
5784
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394 |
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Fix dateFormat for Oracle by invoking dateValue on demand
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395 try { |
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Fix dateFormat for Oracle by invoking dateValue on demand
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396 // Oracle does not return a date object but an oracle.sql.TIMESTAMP |
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Fix dateFormat for Oracle by invoking dateValue on demand
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397 Method meth = date.getClass().getMethod("dateValue", new Class[] {}); |
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Fix dateFormat for Oracle by invoking dateValue on demand
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398 date = meth.invoke(date, new Object [] {}); |
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399 } catch (IllegalArgumentException e) { |
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400 } catch (IllegalAccessException e) { |
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401 } catch (InvocationTargetException e) { |
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402 } catch (NoSuchMethodException e) { |
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Fix dateFormat for Oracle by invoking dateValue on demand
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403 } |
5608
62513c9183ba
Datacage: Added dc:date-format to function resolver. Args: dc:date-format(pattern, date)
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404 if (pattern instanceof String && date instanceof Date) { |
62513c9183ba
Datacage: Added dc:date-format to function resolver. Args: dc:date-format(pattern, date)
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405 try { |
62513c9183ba
Datacage: Added dc:date-format to function resolver. Args: dc:date-format(pattern, date)
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406 // TODO: Take locale into account. |
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Datacage: Added dc:date-format to function resolver. Args: dc:date-format(pattern, date)
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407 return new SimpleDateFormat((String)pattern).format((Date)date); |
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408 } |
62513c9183ba
Datacage: Added dc:date-format to function resolver. Args: dc:date-format(pattern, date)
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409 catch (IllegalArgumentException iae) { |
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410 throw new XPathFunctionException(iae); |
62513c9183ba
Datacage: Added dc:date-format to function resolver. Args: dc:date-format(pattern, date)
Sascha L. Teichmann <teichmann@intevation.de>
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411 } |
62513c9183ba
Datacage: Added dc:date-format to function resolver. Args: dc:date-format(pattern, date)
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412 } |
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Datacage: Added dc:date-format to function resolver. Args: dc:date-format(pattern, date)
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413 return ""; |
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Datacage: Added dc:date-format to function resolver. Args: dc:date-format(pattern, date)
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414 } |
6933
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Datacage: Add dc:all-state-successors() to enable predicates like dc:contains(dc:all-state-successors($artifact-name, $current-state-id), 'state.winfo.calculation_mode') which recursively collects all successor state ids an check for containment.
Sascha L. Teichmann <teichmann@intevation.de>
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415 |
468d9ebda4ce
Datacage: Add dc:all-state-successors() to enable predicates like dc:contains(dc:all-state-successors($artifact-name, $current-state-id), 'state.winfo.calculation_mode') which recursively collects all successor state ids an check for containment.
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416 public Set<String> allStateSuccessors(String artifactName, String stateId) { |
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Datacage: Add dc:all-state-successors() to enable predicates like dc:contains(dc:all-state-successors($artifact-name, $current-state-id), 'state.winfo.calculation_mode') which recursively collects all successor state ids an check for containment.
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417 GlobalContext gc = RiverContextFactory.getGlobalContext(); |
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Datacage: Add dc:all-state-successors() to enable predicates like dc:contains(dc:all-state-successors($artifact-name, $current-state-id), 'state.winfo.calculation_mode') which recursively collects all successor state ids an check for containment.
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418 if (gc == null) { |
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Datacage: Add dc:all-state-successors() to enable predicates like dc:contains(dc:all-state-successors($artifact-name, $current-state-id), 'state.winfo.calculation_mode') which recursively collects all successor state ids an check for containment.
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419 return Collections.<String>emptySet(); |
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420 } |
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Datacage: Add dc:all-state-successors() to enable predicates like dc:contains(dc:all-state-successors($artifact-name, $current-state-id), 'state.winfo.calculation_mode') which recursively collects all successor state ids an check for containment.
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421 Object o = gc.get(RiverContext.TRANSITION_ENGINE_KEY); |
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422 if (o instanceof TransitionEngine) { |
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Datacage: Add dc:all-state-successors() to enable predicates like dc:contains(dc:all-state-successors($artifact-name, $current-state-id), 'state.winfo.calculation_mode') which recursively collects all successor state ids an check for containment.
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423 TransitionEngine te = (TransitionEngine)o; |
468d9ebda4ce
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424 return te.allRecursiveSuccessorStateIds(artifactName, stateId); |
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425 } |
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426 return Collections.<String>emptySet(); |
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427 } |
7382
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Datacage: Add function dc:find-all(needle, haystack).
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428 |
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Datacage: Add function dc:find-all(needle, haystack).
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429 public Collection<String> findAll(String needle, String haystack) { |
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430 |
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Datacage: Add function dc:find-all(needle, haystack).
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431 ArrayList<String> result = new ArrayList<String>(); |
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432 |
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Datacage: Add function dc:find-all(needle, haystack).
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433 Pattern pattern = Pattern.compile(needle); |
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434 Matcher matcher = pattern.matcher(haystack); |
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435 while (matcher.find()) { |
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436 result.add(matcher.group()); |
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437 } |
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Datacage: Add function dc:find-all(needle, haystack).
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438 return result; |
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439 } |
998
b81626b10cb7
Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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440 } |
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Datacage: Moved templating in a better suited package.
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441 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |