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annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/datacage/templating/FunctionResolver.java @ 4926:1e379598c47a

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Fixed dc:fromValue/toValue (now handles values in locations as numbers).
author Sascha L. Teichmann <teichmann@intevation.de>
date Thu, 31 Jan 2013 10:18:16 +0100
parents 5ab87837622f
children 53be73133104
rev   line source
998
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
1 package de.intevation.flys.artifacts.datacage.templating;
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2
4903
5ab87837622f Sort the locations array in new datacage templating language functions.
Raimund Renkert <rrenkert@intevation.de>
parents: 4902
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3 import java.util.Arrays;
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4 import java.util.List;
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5 import java.util.Collection;
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6 import java.util.Map;
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7 import java.util.ArrayList;
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8
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9 import javax.xml.xpath.XPathFunctionResolver;
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10 import javax.xml.xpath.XPathFunction;
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11 import javax.xml.xpath.XPathFunctionException;
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12
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13 import javax.xml.namespace.QName;
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14
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15 import org.apache.log4j.Logger;
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16
4594
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1930
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17
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1930
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18 /** Resolves functions (e.g. dc:contains) in Datacage/Meta-Data system. */
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19 public class FunctionResolver
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20 implements XPathFunctionResolver
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21 {
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parents: 1930
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22 /** Home logger. */
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23 private static Logger log = Logger.getLogger(FunctionResolver.class);
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24
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25 public static final String FUNCTION_NAMESPACE_URI = "dc";
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26
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27 public static final class Entry {
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28
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29 String name;
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30 XPathFunction function;
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31 int arity;
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32
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33 public Entry() {
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34 }
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35
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36 public Entry(String name, XPathFunction function, int arity) {
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37 this.name = name;
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38 this.function = function;
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39 this.arity = arity;
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40 }
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41 } // class Entry
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42
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43 public static final FunctionResolver FUNCTIONS = new FunctionResolver();
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44
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45 static {
1930
de0c2bbb27f9 Cosmetics, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1716
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46 /** Implementation of case-ignoring dc:contains. */
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47 FUNCTIONS.addFunction("contains", 2, new XPathFunction() {
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48 @Override
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49 public Object evaluate(List args) throws XPathFunctionException {
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50 Object haystack = args.get(0);
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51 Object needle = args.get(1);
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3ca999f507b7 flys/issue314: Variables in datacage are now case insensitive.
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52
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53 if (needle instanceof String) {
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54 needle = ((String)needle).toUpperCase();
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parents: 998
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55 }
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56
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57 try {
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58 if (haystack instanceof Collection) {
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59 return Boolean.valueOf(
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60 ((Collection)haystack).contains(needle));
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61 }
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62
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63 if (haystack instanceof Map) {
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64 return Boolean.valueOf(
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65 ((Map)haystack).containsKey(needle));
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66 }
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67
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68 if (haystack instanceof Object []) {
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69 for (Object straw: (Object [])haystack) {
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70 if (straw.equals(needle)) {
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71 return Boolean.TRUE;
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72 }
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73 }
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74 }
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75
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76 return Boolean.FALSE;
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77 }
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78 catch (Exception e) {
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79 log.error(e);
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80 throw new XPathFunctionException(e);
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81 }
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82 }
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83 });
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84 }
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85
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e1566938d04c Added new functions to datacage templating language.
Raimund Renkert <rrenkert@intevation.de>
parents: 4594
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86 static {
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87 /** Implementation for getting the minimum value of location or distance
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88 * dc:fromValue. */
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89 FUNCTIONS.addFunction("fromValue", 3, 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 Object mode = args.get(0);
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93 Object locations = args.get(1);
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94 Object from = args.get(2);
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95
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96 if (!(mode instanceof String)){
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97 return -Double.MAX_VALUE;
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98 }
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99
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100 if (mode.equals("locations")) {
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101 if (!(locations instanceof String)) {
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102 return -Double.MAX_VALUE;
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103 }
4926
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
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parents: 4903
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104 String loc = ((String)locations).replace(" ", "");
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105 String[] split = loc.split(",");
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106 if (split.length < 1) {
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107 return -Double.MAX_VALUE;
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parents: 4903
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108 }
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parents: 4903
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109 try {
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110 double min = Double.parseDouble(split[0]);
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111 for (int i = 1; i < split.length; ++i) {
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112 double v = Double.parseDouble(split[i]);
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parents: 4903
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113 if (v < min) {
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114 min = v;
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115 }
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116 }
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
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117 return min;
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118 }
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119 catch (NumberFormatException nfe) {
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120 return -Double.MAX_VALUE;
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121 }
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122 }
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123 else if (mode.equals("distance")) {
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diff changeset
124 if (!(from instanceof String)) {
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diff changeset
125 return -Double.MAX_VALUE;
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Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
126 }
e1566938d04c Added new functions to datacage templating language.
Raimund Renkert <rrenkert@intevation.de>
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diff changeset
127 String f = (String)from;
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Raimund Renkert <rrenkert@intevation.de>
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diff changeset
128 try {
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diff changeset
129 return Double.parseDouble(f);
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diff changeset
130 }
e1566938d04c Added new functions to datacage templating language.
Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
131 catch(NumberFormatException nfe) {
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Raimund Renkert <rrenkert@intevation.de>
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diff changeset
132 return -Double.MAX_VALUE;
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parents: 4594
diff changeset
133 }
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Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
134 }
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parents: 4594
diff changeset
135 else {
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parents: 4594
diff changeset
136 return -Double.MAX_VALUE;
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Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
137 }
e1566938d04c Added new functions to datacage templating language.
Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
138 }
e1566938d04c Added new functions to datacage templating language.
Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
139 });
e1566938d04c Added new functions to datacage templating language.
Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
140 }
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141
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142 static {
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143 /** Implementation for getting the maximum value of location or distance
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144 * dc:toValue. */
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145 FUNCTIONS.addFunction("toValue", 3, new XPathFunction() {
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146 @Override
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diff changeset
147 public Object evaluate(List args) throws XPathFunctionException {
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148 Object mode = args.get(0);
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diff changeset
149 Object locations = args.get(1);
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diff changeset
150 Object to = args.get(2);
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Raimund Renkert <rrenkert@intevation.de>
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diff changeset
151
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Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
152 if (!(mode instanceof String)){
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153 return Double.MAX_VALUE;
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parents: 4594
diff changeset
154 }
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diff changeset
155
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parents: 4594
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156 if (mode.equals("locations")) {
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Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
157 if (!(locations instanceof String)) {
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parents: 4594
diff changeset
158 return Double.MAX_VALUE;
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parents: 4594
diff changeset
159 }
4926
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4903
diff changeset
160 try {
4902
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parents: 4594
diff changeset
161 String loc = ((String)locations).replace(" ", "");
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parents: 4594
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162 String[] split = loc.split(",");
4926
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4903
diff changeset
163 if (split.length < 1) {
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4903
diff changeset
164 return Double.MAX_VALUE;
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4903
diff changeset
165 }
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4903
diff changeset
166 double max = Double.parseDouble(split[0]);
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4903
diff changeset
167 for (int i = 1; i < split.length; ++i) {
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4903
diff changeset
168 double v = Double.parseDouble(split[i]);
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4903
diff changeset
169 if (v > max) {
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4903
diff changeset
170 max = v;
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4903
diff changeset
171 }
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4903
diff changeset
172 }
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4903
diff changeset
173 return max;
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4903
diff changeset
174 }
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4903
diff changeset
175 catch (NumberFormatException nfe) {
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4903
diff changeset
176 return Double.MAX_VALUE;
4902
e1566938d04c Added new functions to datacage templating language.
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parents: 4594
diff changeset
177 }
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Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
178 }
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parents: 4594
diff changeset
179 else if (mode.equals("distance")) {
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Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
180 if (!(to instanceof String)) {
e1566938d04c Added new functions to datacage templating language.
Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
181 return Double.MAX_VALUE;
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Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
182 }
e1566938d04c Added new functions to datacage templating language.
Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
183 else {
e1566938d04c Added new functions to datacage templating language.
Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
184 String t = (String)to;
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Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
185 try {
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parents: 4594
diff changeset
186 return Double.parseDouble(t);
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Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
187 }
e1566938d04c Added new functions to datacage templating language.
Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
188 catch(NumberFormatException nfe) {
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parents: 4594
diff changeset
189 return Double.MAX_VALUE;
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Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
190 }
e1566938d04c Added new functions to datacage templating language.
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parents: 4594
diff changeset
191 }
e1566938d04c Added new functions to datacage templating language.
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parents: 4594
diff changeset
192 }
e1566938d04c Added new functions to datacage templating language.
Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
193 else {
e1566938d04c Added new functions to datacage templating language.
Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
194 return Double.MAX_VALUE;
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Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
195 }
e1566938d04c Added new functions to datacage templating language.
Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
196 }
e1566938d04c Added new functions to datacage templating language.
Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
197 });
e1566938d04c Added new functions to datacage templating language.
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parents: 4594
diff changeset
198 }
e1566938d04c Added new functions to datacage templating language.
Raimund Renkert <rrenkert@intevation.de>
parents: 4594
diff changeset
199
4594
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1930
diff changeset
200 /** List of functions. */
998
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parents:
diff changeset
201 protected List<Entry> functions;
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parents:
diff changeset
202
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
203 public FunctionResolver() {
b81626b10cb7 Datacage: Moved templating in a better suited package.
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parents:
diff changeset
204 functions = new ArrayList<Entry>();
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
205 }
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
206
4594
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1930
diff changeset
207 /**
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1930
diff changeset
208 * Create a new function.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1930
diff changeset
209 * @param name Name of the function.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1930
diff changeset
210 * @param arity Number of arguments for function.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1930
diff changeset
211 * @param function the function itself.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1930
diff changeset
212 */
998
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
213 public void addFunction(String name, int arity, XPathFunction function) {
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
214 functions.add(new Entry(name, function, arity));
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
215 }
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
216
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
217 @Override
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
218 public XPathFunction resolveFunction(QName functionName, int arity) {
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
219
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
220 if (!functionName.getNamespaceURI().equals(FUNCTION_NAMESPACE_URI)) {
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
221 return null;
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
222 }
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
223
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
224 String name = functionName.getLocalPart();
b81626b10cb7 Datacage: Moved templating in a better suited package.
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parents:
diff changeset
225 for (Entry entry: functions) {
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
226 if (entry.arity == arity && entry.name.equals(name)) {
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
227 return entry.function;
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
228 }
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
229 }
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
230
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
231 return null;
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
232 }
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
233 }
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
234 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org