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annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/datacage/templating/FunctionResolver.java @ 5164:8c65acf01adc 2.9.10

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Fixed datacage to be oracle compatible.
author Raimund Renkert <rrenkert@intevation.de>
date Mon, 04 Mar 2013 11:44:11 +0100
parents 53be73133104
children ba489a16f4d8
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
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3 import java.util.ArrayList;
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4 import java.util.Collection;
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5 import java.util.List;
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6 import java.util.Map;
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7
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8 import javax.xml.namespace.QName;
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9
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10 import javax.xml.xpath.XPathFunction;
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parents:
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11 import javax.xml.xpath.XPathFunctionException;
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12 import javax.xml.xpath.XPathFunctionResolver;
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13
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14 import org.apache.log4j.Logger;
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15
4594
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1930
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16
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1930
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17 /** Resolves functions (e.g. dc:contains) in Datacage/Meta-Data system. */
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18 public class FunctionResolver
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19 implements XPathFunctionResolver
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20 {
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parents: 1930
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21 /** Home logger. */
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22 private static Logger log = Logger.getLogger(FunctionResolver.class);
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23
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24 public static final String FUNCTION_NAMESPACE_URI = "dc";
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25
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26 public static final class Entry {
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27
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28 String name;
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29 XPathFunction function;
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30 int arity;
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31
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32 public Entry() {
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33 }
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34
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35 public Entry(String name, XPathFunction function, int arity) {
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36 this.name = name;
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37 this.function = function;
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38 this.arity = arity;
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39 }
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40 } // class Entry
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41
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42 public static final FunctionResolver FUNCTIONS = new FunctionResolver();
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43
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44 static {
1930
de0c2bbb27f9 Cosmetics, docs.
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45 /** Implementation of case-ignoring dc:contains. */
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46 FUNCTIONS.addFunction("contains", 2, new XPathFunction() {
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47 @Override
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48 public Object evaluate(List args) throws XPathFunctionException {
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49 Object haystack = args.get(0);
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50 Object needle = args.get(1);
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3ca999f507b7 flys/issue314: Variables in datacage are now case insensitive.
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51
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52 if (needle instanceof String) {
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53 needle = ((String)needle).toUpperCase();
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parents: 998
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54 }
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55
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56 try {
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57 if (haystack instanceof Collection) {
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58 return Boolean.valueOf(
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59 ((Collection)haystack).contains(needle));
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60 }
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61
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62 if (haystack instanceof Map) {
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63 return Boolean.valueOf(
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64 ((Map)haystack).containsKey(needle));
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65 }
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66
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67 if (haystack instanceof Object []) {
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68 for (Object straw: (Object [])haystack) {
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69 if (straw.equals(needle)) {
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70 return Boolean.TRUE;
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71 }
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72 }
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73 }
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74
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75 return Boolean.FALSE;
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76 }
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77 catch (Exception e) {
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78 log.error(e);
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79 throw new XPathFunctionException(e);
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80 }
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81 }
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82 });
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83 }
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84
4902
e1566938d04c Added new functions to datacage templating language.
Raimund Renkert <rrenkert@intevation.de>
parents: 4594
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85 static {
e1566938d04c Added new functions to datacage templating language.
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86 /** Implementation for getting the minimum value of location or distance
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87 * dc:fromValue. */
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88 FUNCTIONS.addFunction("fromValue", 3, new XPathFunction() {
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89 @Override
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90 public Object evaluate(List args) throws XPathFunctionException {
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91 Object mode = args.get(0);
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92 Object locations = args.get(1);
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93 Object from = args.get(2);
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94
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95 if (!(mode instanceof String)){
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8c65acf01adc Fixed datacage to be oracle compatible.
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96 return -99999d;
4902
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97 }
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98
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99 if (mode.equals("locations")) {
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100 if (!(locations instanceof String)) {
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8c65acf01adc Fixed datacage to be oracle compatible.
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101 return -99999d;
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102 }
4926
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
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103 String loc = ((String)locations).replace(" ", "");
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104 String[] split = loc.split(",");
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105 if (split.length < 1) {
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106 return -99999d;
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107 }
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parents: 4903
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108 try {
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parents: 4903
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109 double min = Double.parseDouble(split[0]);
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110 for (int i = 1; i < split.length; ++i) {
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111 double v = Double.parseDouble(split[i]);
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parents: 4903
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112 if (v < min) {
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113 min = v;
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parents: 4903
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114 }
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parents: 4903
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115 }
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116 return min;
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parents: 4903
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117 }
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
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118 catch (NumberFormatException nfe) {
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119 return -99999d;
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parents: 4594
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120 }
e1566938d04c Added new functions to datacage templating language.
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parents: 4594
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121 }
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parents: 4594
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122 else if (mode.equals("distance")) {
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parents: 4594
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123 if (!(from instanceof String)) {
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8c65acf01adc Fixed datacage to be oracle compatible.
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124 return -99999d;
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e1566938d04c Added new functions to datacage templating language.
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parents: 4594
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125 }
e1566938d04c Added new functions to datacage templating language.
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diff changeset
126 String f = (String)from;
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127 try {
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128 return Double.parseDouble(f);
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129 }
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diff changeset
130 catch(NumberFormatException nfe) {
5164
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131 return -99999d;
4902
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diff changeset
132 }
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133 }
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134 else {
5164
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135 return -99999d;
4902
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parents: 4594
diff changeset
136 }
e1566938d04c Added new functions to datacage templating language.
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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.
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140
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141 static {
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142 /** Implementation for getting the maximum value of location or distance
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143 * dc:toValue. */
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144 FUNCTIONS.addFunction("toValue", 3, new XPathFunction() {
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145 @Override
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146 public Object evaluate(List args) throws XPathFunctionException {
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147 Object mode = args.get(0);
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148 Object locations = args.get(1);
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149 Object to = args.get(2);
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150
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151 if (!(mode instanceof String)){
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152 return 99999d;
4902
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153 }
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154
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155 if (mode.equals("locations")) {
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156 if (!(locations instanceof String)) {
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157 return 99999d;
4902
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parents: 4594
diff changeset
158 }
4926
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4903
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159 try {
4902
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160 String loc = ((String)locations).replace(" ", "");
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161 String[] split = loc.split(",");
4926
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
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parents: 4903
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162 if (split.length < 1) {
5164
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163 return 99999d;
4926
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4903
diff changeset
164 }
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
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parents: 4903
diff changeset
165 double max = Double.parseDouble(split[0]);
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parents: 4903
diff changeset
166 for (int i = 1; i < split.length; ++i) {
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parents: 4903
diff changeset
167 double v = Double.parseDouble(split[i]);
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parents: 4903
diff changeset
168 if (v > max) {
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parents: 4903
diff changeset
169 max = v;
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parents: 4903
diff changeset
170 }
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 return max;
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parents: 4903
diff changeset
173 }
1e379598c47a Fixed dc:fromValue/toValue (now handles values in locations as numbers).
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4903
diff changeset
174 catch (NumberFormatException nfe) {
5164
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parents: 4949
diff changeset
175 return 99999d;
4902
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parents: 4594
diff changeset
176 }
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parents: 4594
diff changeset
177 }
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parents: 4594
diff changeset
178 else if (mode.equals("distance")) {
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parents: 4594
diff changeset
179 if (!(to instanceof String)) {
5164
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diff changeset
180 return 99999d;
4902
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parents: 4594
diff changeset
181 }
e1566938d04c Added new functions to datacage templating language.
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parents: 4594
diff changeset
182 else {
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parents: 4594
diff changeset
183 String t = (String)to;
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parents: 4594
diff changeset
184 try {
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diff changeset
185 return Double.parseDouble(t);
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parents: 4594
diff changeset
186 }
e1566938d04c Added new functions to datacage templating language.
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parents: 4594
diff changeset
187 catch(NumberFormatException nfe) {
5164
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diff changeset
188 return 99999d;
4902
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parents: 4594
diff changeset
189 }
e1566938d04c Added new functions to datacage templating language.
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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 else {
5164
8c65acf01adc Fixed datacage to be oracle compatible.
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diff changeset
193 return 99999d;
4902
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parents: 4594
diff changeset
194 }
e1566938d04c Added new functions to datacage templating language.
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parents: 4594
diff changeset
195 }
e1566938d04c Added new functions to datacage templating language.
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parents: 4594
diff changeset
196 });
e1566938d04c Added new functions to datacage templating language.
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parents: 4594
diff changeset
197 }
e1566938d04c Added new functions to datacage templating language.
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diff changeset
198
4594
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1930
diff changeset
199 /** List of functions. */
998
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parents:
diff changeset
200 protected List<Entry> functions;
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parents:
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201
b81626b10cb7 Datacage: Moved templating in a better suited package.
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parents:
diff changeset
202 public FunctionResolver() {
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parents:
diff changeset
203 functions = new ArrayList<Entry>();
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parents:
diff changeset
204 }
b81626b10cb7 Datacage: Moved templating in a better suited package.
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parents:
diff changeset
205
4594
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1930
diff changeset
206 /**
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1930
diff changeset
207 * Create a new function.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1930
diff changeset
208 * @param name Name of the function.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1930
diff changeset
209 * @param arity Number of arguments for function.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1930
diff changeset
210 * @param function the function itself.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1930
diff changeset
211 */
998
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
212 public void addFunction(String name, int arity, XPathFunction function) {
b81626b10cb7 Datacage: Moved templating in a better suited package.
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parents:
diff changeset
213 functions.add(new Entry(name, function, arity));
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
214 }
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 @Override
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
217 public XPathFunction resolveFunction(QName functionName, int arity) {
b81626b10cb7 Datacage: Moved templating in a better suited package.
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parents:
diff changeset
218
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
219 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
220 return null;
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
221 }
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 String name = functionName.getLocalPart();
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
224 for (Entry entry: functions) {
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
225 if (entry.arity == arity && entry.name.equals(name)) {
b81626b10cb7 Datacage: Moved templating in a better suited package.
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parents:
diff changeset
226 return entry.function;
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
227 }
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 return null;
b81626b10cb7 Datacage: Moved templating in a better suited package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
231 }
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 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org