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/GML/Base.js |
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8 | */ |
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9 | |
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10 | /** |
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11 | * Class: OpenLayers.Format.GML.v2 |
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12 | * Parses GML version 2. |
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13 | * |
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14 | * Inherits from: |
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15 | * - <OpenLayers.Format.GML.Base> |
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16 | */ |
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17 | OpenLayers.Format.GML.v2 = OpenLayers.Class(OpenLayers.Format.GML.Base, { |
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18 | |
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19 | /** |
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20 | * Property: schemaLocation |
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21 | * {String} Schema location for a particular minor version. |
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22 | */ |
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23 | schemaLocation: "http://www.opengis.net/gml http://schemas.opengis.net/gml/2.1.2/feature.xsd", |
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24 | |
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25 | /** |
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26 | * Constructor: OpenLayers.Format.GML.v2 |
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27 | * Create a parser for GML v2. |
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28 | * |
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29 | * Parameters: |
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30 | * options - {Object} An optional object whose properties will be set on |
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31 | * this instance. |
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32 | * |
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33 | * Valid options properties: |
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34 | * featureType - {String} Local (without prefix) feature typeName (required). |
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35 | * featureNS - {String} Feature namespace (required). |
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36 | * geometryName - {String} Geometry element name. |
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37 | */ |
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38 | initialize: function(options) { |
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39 | OpenLayers.Format.GML.Base.prototype.initialize.apply(this, [options]); |
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40 | }, |
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41 | |
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42 | /** |
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43 | * Property: readers |
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44 | * Contains public functions, grouped by namespace prefix, that will |
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45 | * be applied when a namespaced node is found matching the function |
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46 | * name. The function will be applied in the scope of this parser |
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47 | * with two arguments: the node being read and a context object passed |
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48 | * from the parent. |
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49 | */ |
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50 | readers: { |
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51 | "gml": OpenLayers.Util.applyDefaults({ |
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52 | "outerBoundaryIs": function(node, container) { |
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53 | var obj = {}; |
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54 | this.readChildNodes(node, obj); |
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55 | container.outer = obj.components[0]; |
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56 | }, |
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57 | "innerBoundaryIs": function(node, container) { |
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58 | var obj = {}; |
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59 | this.readChildNodes(node, obj); |
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60 | container.inner.push(obj.components[0]); |
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61 | }, |
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62 | "Box": function(node, container) { |
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63 | var obj = {}; |
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64 | this.readChildNodes(node, obj); |
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65 | if(!container.components) { |
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66 | container.components = []; |
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67 | } |
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68 | var min = obj.points[0]; |
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69 | var max = obj.points[1]; |
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70 | container.components.push( |
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71 | new OpenLayers.Bounds(min.x, min.y, max.x, max.y) |
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72 | ); |
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73 | } |
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74 | }, OpenLayers.Format.GML.Base.prototype.readers["gml"]), |
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75 | "feature": OpenLayers.Format.GML.Base.prototype.readers["feature"], |
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76 | "wfs": OpenLayers.Format.GML.Base.prototype.readers["wfs"] |
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77 | }, |
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78 | |
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79 | /** |
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80 | * Method: write |
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81 | * |
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82 | * Parameters: |
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83 | * features - {Array(<OpenLayers.Feature.Vector>) | OpenLayers.Feature.Vector} |
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84 | * An array of features or a single feature. |
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85 | * |
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86 | * Returns: |
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87 | * {String} Given an array of features, a doc with a gml:featureMembers |
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88 | * element will be returned. Given a single feature, a doc with a |
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89 | * gml:featureMember element will be returned. |
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90 | */ |
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91 | write: function(features) { |
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92 | var name; |
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93 | if(features instanceof Array) { |
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94 | // GML2 only has abstract feature collections |
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95 | // wfs provides a feature collection from a well-known schema |
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96 | name = "wfs:FeatureCollection"; |
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97 | } else { |
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98 | name = "gml:featureMember"; |
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99 | } |
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100 | var root = this.writeNode(name, features); |
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101 | this.setAttributeNS( |
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102 | root, this.namespaces["xsi"], |
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103 | "xsi:schemaLocation", this.schemaLocation |
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104 | ); |
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105 | |
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106 | return OpenLayers.Format.XML.prototype.write.apply(this, [root]); |
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107 | }, |
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108 | |
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109 | /** |
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110 | * Property: writers |
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111 | * As a compliment to the readers property, this structure contains public |
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112 | * writing functions grouped by namespace alias and named like the |
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113 | * node names they produce. |
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114 | */ |
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115 | writers: { |
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116 | "gml": OpenLayers.Util.applyDefaults({ |
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117 | "Point": function(geometry) { |
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118 | var node = this.createElementNSPlus("gml:Point"); |
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119 | this.writeNode("coordinates", [geometry], node); |
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120 | return node; |
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121 | }, |
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122 | "coordinates": function(points) { |
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123 | var numPoints = points.length; |
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124 | var parts = new Array(numPoints); |
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125 | var point; |
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126 | for(var i=0; i<numPoints; ++i) { |
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127 | point = points[i]; |
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128 | if(this.xy) { |
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129 | parts[i] = point.x + "," + point.y; |
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130 | } else { |
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131 | parts[i] = point.y + "," + point.x; |
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132 | } |
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133 | if(point.z != undefined) { // allow null or undefined |
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134 | parts[i] += "," + point.z; |
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135 | } |
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136 | } |
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137 | return this.createElementNSPlus("gml:coordinates", { |
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138 | attributes: { |
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139 | decimal: ".", cs: ",", ts: " " |
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140 | }, |
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141 | value: (numPoints == 1) ? parts[0] : parts.join(" ") |
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142 | }); |
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143 | }, |
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144 | "LineString": function(geometry) { |
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145 | var node = this.createElementNSPlus("gml:LineString"); |
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146 | this.writeNode("coordinates", geometry.components, node); |
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147 | return node; |
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148 | }, |
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149 | "Polygon": function(geometry) { |
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150 | var node = this.createElementNSPlus("gml:Polygon"); |
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151 | this.writeNode("outerBoundaryIs", geometry.components[0], node); |
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152 | for(var i=1; i<geometry.components.length; ++i) { |
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153 | this.writeNode( |
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154 | "innerBoundaryIs", geometry.components[i], node |
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155 | ); |
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156 | } |
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157 | return node; |
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158 | }, |
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159 | "outerBoundaryIs": function(ring) { |
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160 | var node = this.createElementNSPlus("gml:outerBoundaryIs"); |
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161 | this.writeNode("LinearRing", ring, node); |
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162 | return node; |
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163 | }, |
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164 | "innerBoundaryIs": function(ring) { |
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165 | var node = this.createElementNSPlus("gml:innerBoundaryIs"); |
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166 | this.writeNode("LinearRing", ring, node); |
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167 | return node; |
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168 | }, |
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169 | "LinearRing": function(ring) { |
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170 | var node = this.createElementNSPlus("gml:LinearRing"); |
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171 | this.writeNode("coordinates", ring.components, node); |
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172 | return node; |
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173 | }, |
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174 | "Box": function(bounds) { |
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175 | var node = this.createElementNSPlus("gml:Box"); |
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176 | this.writeNode("coordinates", [ |
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177 | {x: bounds.left, y: bounds.bottom}, |
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178 | {x: bounds.right, y: bounds.top} |
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179 | ], node); |
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180 | // srsName attribute is optional for gml:Box |
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181 | if(this.srsName) { |
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182 | node.setAttribute("srsName", this.srsName); |
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183 | } |
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184 | return node; |
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185 | } |
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186 | }, OpenLayers.Format.GML.Base.prototype.writers["gml"]), |
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187 | "feature": OpenLayers.Format.GML.Base.prototype.writers["feature"], |
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188 | "wfs": OpenLayers.Format.GML.Base.prototype.writers["wfs"] |
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189 | }, |
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190 | |
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191 | CLASS_NAME: "OpenLayers.Format.GML.v2" |
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192 | |
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193 | }); |
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