1 | /* Copyright (c) 2006-2010 by OpenLayers Contributors (see authors.txt for |
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2 | * full list of contributors). Published under the Clear BSD license. |
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3 | * See http://svn.openlayers.org/trunk/openlayers/license.txt for the |
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4 | * full text of the license. */ |
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5 | |
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6 | /** |
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7 | * @requires OpenLayers/Format/XML.js |
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8 | * @requires OpenLayers/Format/GML/v3.js |
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9 | */ |
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10 | |
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11 | /** |
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12 | * Class: OpenLayers.Format.SOSGetFeatureOfInterest |
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13 | * Read and write SOS GetFeatureOfInterest. This is used to get to |
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14 | * the location of the features (stations). The stations can have 1 or more |
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15 | * sensors. |
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16 | * |
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17 | * Inherits from: |
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18 | * - <OpenLayers.Format.XML> |
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19 | */ |
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20 | OpenLayers.Format.SOSGetFeatureOfInterest = OpenLayers.Class( |
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21 | OpenLayers.Format.XML, { |
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22 | |
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23 | /** |
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24 | * Constant: VERSION |
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25 | * {String} 1.0.0 |
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26 | */ |
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27 | VERSION: "1.0.0", |
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28 | |
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29 | /** |
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30 | * Property: namespaces |
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31 | * {Object} Mapping of namespace aliases to namespace URIs. |
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32 | */ |
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33 | namespaces: { |
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34 | sos: "http://www.opengis.net/sos/1.0", |
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35 | gml: "http://www.opengis.net/gml", |
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36 | sa: "http://www.opengis.net/sampling/1.0", |
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37 | xsi: "http://www.w3.org/2001/XMLSchema-instance" |
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38 | }, |
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39 | |
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40 | /** |
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41 | * Property: schemaLocation |
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42 | * {String} Schema location |
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43 | */ |
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44 | schemaLocation: "http://www.opengis.net/sos/1.0 http://schemas.opengis.net/sos/1.0.0/sosAll.xsd", |
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45 | |
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46 | /** |
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47 | * Property: defaultPrefix |
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48 | */ |
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49 | defaultPrefix: "sos", |
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50 | |
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51 | /** |
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52 | * Property: regExes |
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53 | * Compiled regular expressions for manipulating strings. |
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54 | */ |
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55 | regExes: { |
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56 | trimSpace: (/^\s*|\s*$/g), |
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57 | removeSpace: (/\s*/g), |
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58 | splitSpace: (/\s+/), |
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59 | trimComma: (/\s*,\s*/g) |
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60 | }, |
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61 | |
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62 | /** |
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63 | * Constructor: OpenLayers.Format.SOSGetFeatureOfInterest |
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64 | * |
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65 | * Parameters: |
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66 | * options - {Object} An optional object whose properties will be set on |
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67 | * this instance. |
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68 | */ |
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69 | initialize: function(options) { |
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70 | OpenLayers.Format.XML.prototype.initialize.apply(this, [options]); |
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71 | }, |
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72 | |
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73 | /** |
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74 | * APIMethod: read |
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75 | * Parse a GetFeatureOfInterest response and return an array of features |
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76 | * |
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77 | * Parameters: |
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78 | * data - {String} or {DOMElement} data to read/parse. |
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79 | * |
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80 | * Returns: |
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81 | * {Array(<OpenLayers.Feature.Vector>)} An array of features. |
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82 | */ |
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83 | read: function(data) { |
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84 | if(typeof data == "string") { |
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85 | data = OpenLayers.Format.XML.prototype.read.apply(this, [data]); |
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86 | } |
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87 | if(data && data.nodeType == 9) { |
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88 | data = data.documentElement; |
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89 | } |
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90 | |
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91 | var info = {features: []}; |
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92 | this.readNode(data, info); |
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93 | |
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94 | var features = []; |
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95 | for (var i=0, len=info.features.length; i<len; i++) { |
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96 | var container = info.features[i]; |
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97 | // reproject features if needed |
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98 | if(this.internalProjection && this.externalProjection && |
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99 | container.components[0]) { |
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100 | container.components[0].transform( |
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101 | this.externalProjection, this.internalProjection |
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102 | ); |
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103 | } |
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104 | var feature = new OpenLayers.Feature.Vector( |
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105 | container.components[0], container.attributes); |
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106 | features.push(feature); |
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107 | } |
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108 | return features; |
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109 | }, |
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110 | |
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111 | /** |
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112 | * Property: readers |
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113 | * Contains public functions, grouped by namespace prefix, that will |
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114 | * be applied when a namespaced node is found matching the function |
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115 | * name. The function will be applied in the scope of this parser |
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116 | * with two arguments: the node being read and a context object passed |
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117 | * from the parent. |
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118 | */ |
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119 | readers: { |
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120 | "sa": { |
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121 | "SamplingPoint": function(node, obj) { |
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122 | // sampling point can also be without a featureMember if |
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123 | // there is only 1 |
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124 | if (!obj.attributes) { |
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125 | var feature = {attributes: {}}; |
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126 | obj.features.push(feature); |
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127 | obj = feature; |
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128 | } |
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129 | obj.attributes.id = this.getAttributeNS(node, |
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130 | this.namespaces.gml, "id"); |
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131 | this.readChildNodes(node, obj); |
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132 | }, |
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133 | "position": function (node, obj) { |
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134 | this.readChildNodes(node, obj); |
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135 | } |
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136 | }, |
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137 | "gml": OpenLayers.Util.applyDefaults({ |
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138 | "FeatureCollection": function(node, obj) { |
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139 | this.readChildNodes(node, obj); |
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140 | }, |
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141 | "featureMember": function(node, obj) { |
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142 | var feature = {attributes: {}}; |
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143 | obj.features.push(feature); |
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144 | this.readChildNodes(node, feature); |
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145 | }, |
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146 | "name": function(node, obj) { |
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147 | obj.attributes.name = this.getChildValue(node); |
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148 | }, |
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149 | "pos": function(node, obj) { |
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150 | // we need to parse the srsName to get to the |
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151 | // externalProjection, that's why we cannot use |
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152 | // GML v3 for this |
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153 | if (!this.externalProjection) { |
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154 | this.externalProjection = new OpenLayers.Projection( |
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155 | node.getAttribute("srsName")); |
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156 | } |
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157 | OpenLayers.Format.GML.v3.prototype.readers.gml.pos.apply( |
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158 | this, [node, obj]); |
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159 | } |
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160 | }, OpenLayers.Format.GML.v3.prototype.readers.gml) |
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161 | }, |
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162 | |
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163 | /** |
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164 | * Property: writers |
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165 | * As a compliment to the readers property, this structure contains public |
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166 | * writing functions grouped by namespace alias and named like the |
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167 | * node names they produce. |
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168 | */ |
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169 | writers: { |
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170 | "sos": { |
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171 | "GetFeatureOfInterest": function(options) { |
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172 | var node = this.createElementNSPlus("GetFeatureOfInterest", { |
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173 | attributes: { |
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174 | version: this.VERSION, |
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175 | service: 'SOS', |
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176 | "xsi:schemaLocation": this.schemaLocation |
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177 | } |
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178 | }); |
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179 | for (var i=0, len=options.fois.length; i<len; i++) { |
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180 | this.writeNode("FeatureOfInterestId", {foi: options.fois[i]}, node); |
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181 | } |
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182 | return node; |
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183 | }, |
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184 | "FeatureOfInterestId": function(options) { |
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185 | var node = this.createElementNSPlus("FeatureOfInterestId", {value: options.foi}); |
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186 | return node; |
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187 | } |
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188 | } |
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189 | }, |
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190 | |
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191 | CLASS_NAME: "OpenLayers.Format.SOSGetFeatureOfInterest" |
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192 | |
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193 | }); |
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