Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/datacage/templating/FunctionResolver.java @ 4282:8b4988815974

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Added marker for Ws and Qs in Historical Discharge WQ charts. Therefore, the XYChartGenerator got two new methods addDomainMarker(Marker, boolean) and addValueMarker(Marker, boolean). The boolean parameters determine, if the marker should be visible or not. This is analogous to addAxisSeries(XYSeries, int, boolean).
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Mon, 29 Oct 2012 05:59:27 +0100
parents de0c2bbb27f9
children 2970046fcdca
rev   line source
998
b81626b10cb7 Datacage: Moved templating in a better suited package.
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1 package de.intevation.flys.artifacts.datacage.templating;
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2
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3 import java.util.List;
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4 import java.util.Collection;
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5 import java.util.Map;
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6 import java.util.ArrayList;
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7
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8 import javax.xml.xpath.XPathFunctionResolver;
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9 import javax.xml.xpath.XPathFunction;
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10 import javax.xml.xpath.XPathFunctionException;
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11
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12 import javax.xml.namespace.QName;
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13
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14 import org.apache.log4j.Logger;
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15
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16 public class FunctionResolver
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17 implements XPathFunctionResolver
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18 {
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19 private static Logger log = Logger.getLogger(FunctionResolver.class);
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21 public static final String FUNCTION_NAMESPACE_URI = "dc";
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22
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23 public static final class Entry {
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24
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25 String name;
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26 XPathFunction function;
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27 int arity;
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28
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29 public Entry() {
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30 }
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31
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32 public Entry(String name, XPathFunction function, int arity) {
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33 this.name = name;
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34 this.function = function;
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35 this.arity = arity;
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36 }
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37 } // class Entry
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38
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39 public static final FunctionResolver FUNCTIONS = new FunctionResolver();
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40
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41 static {
1930
de0c2bbb27f9 Cosmetics, docs.
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42 /** Implementation of case-ignoring dc:contains. */
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43 FUNCTIONS.addFunction("contains", 2, new XPathFunction() {
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44 @Override
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45 public Object evaluate(List args) throws XPathFunctionException {
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46 Object haystack = args.get(0);
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47 Object needle = args.get(1);
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48
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49 if (needle instanceof String) {
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50 needle = ((String)needle).toUpperCase();
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51 }
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52
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53 try {
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54 if (haystack instanceof Collection) {
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55 return Boolean.valueOf(
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56 ((Collection)haystack).contains(needle));
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57 }
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58
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59 if (haystack instanceof Map) {
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60 return Boolean.valueOf(
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61 ((Map)haystack).containsKey(needle));
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62 }
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63
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64 if (haystack instanceof Object []) {
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65 for (Object straw: (Object [])haystack) {
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66 if (straw.equals(needle)) {
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67 return Boolean.TRUE;
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68 }
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69 }
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70 }
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71
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72 return Boolean.FALSE;
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73 }
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74 catch (Exception e) {
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75 log.error(e);
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76 throw new XPathFunctionException(e);
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77 }
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78 }
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79 });
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80 }
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81
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82 protected List<Entry> functions;
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83
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84 public FunctionResolver() {
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85 functions = new ArrayList<Entry>();
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86 }
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87
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88 public void addFunction(String name, int arity, XPathFunction function) {
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89 functions.add(new Entry(name, function, arity));
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90 }
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91
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92 @Override
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93 public XPathFunction resolveFunction(QName functionName, int arity) {
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94
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95 if (!functionName.getNamespaceURI().equals(FUNCTION_NAMESPACE_URI)) {
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96 return null;
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97 }
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98
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99 String name = functionName.getLocalPart();
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100 for (Entry entry: functions) {
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101 if (entry.arity == arity && entry.name.equals(name)) {
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102 return entry.function;
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103 }
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104 }
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105
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106 return null;
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107 }
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108 }
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109 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org