[76] | 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 | * |
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| 9 | * Class: OpenLayers.Format.WFSDescribeFeatureType |
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| 10 | * Read WFS DescribeFeatureType response |
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| 11 | * |
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| 12 | * Inherits from: |
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| 13 | * - <OpenLayers.Format.XML> |
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| 14 | */ |
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| 15 | OpenLayers.Format.WFSDescribeFeatureType = OpenLayers.Class( |
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| 16 | OpenLayers.Format.XML, { |
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| 17 | |
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| 18 | /** |
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| 19 | * Property: namespaces |
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| 20 | * {Object} Mapping of namespace aliases to namespace URIs. |
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| 21 | */ |
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| 22 | namespaces: { |
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| 23 | xsd: "http://www.w3.org/2001/XMLSchema" |
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| 24 | }, |
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| 25 | |
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| 26 | /** |
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| 27 | * Constructor: OpenLayers.Format.WFSDescribeFeatureType |
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| 28 | * Create a new parser for WFS DescribeFeatureType responses. |
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| 29 | * |
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| 30 | * Parameters: |
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| 31 | * options - {Object} An optional object whose properties will be set on |
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| 32 | * this instance. |
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| 33 | */ |
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| 34 | initialize: function(options) { |
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| 35 | OpenLayers.Format.XML.prototype.initialize.apply(this, [options]); |
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| 36 | }, |
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| 37 | |
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| 38 | /** |
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| 39 | * Property: readers |
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| 40 | * Contains public functions, grouped by namespace prefix, that will |
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| 41 | * be applied when a namespaced node is found matching the function |
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| 42 | * name. The function will be applied in the scope of this parser |
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| 43 | * with two arguments: the node being read and a context object passed |
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| 44 | * from the parent. |
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| 45 | */ |
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| 46 | readers: { |
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| 47 | "xsd": { |
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| 48 | "schema": function(node, obj) { |
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| 49 | var complexTypes = []; |
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| 50 | var customTypes = {}; |
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| 51 | var schema = { |
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| 52 | complexTypes: complexTypes, |
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| 53 | customTypes: customTypes |
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| 54 | }; |
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| 55 | |
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| 56 | this.readChildNodes(node, schema); |
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| 57 | |
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| 58 | var attributes = node.attributes; |
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| 59 | var attr, name; |
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| 60 | for(var i=0, len=attributes.length; i<len; ++i) { |
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| 61 | attr = attributes[i]; |
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| 62 | name = attr.name; |
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| 63 | if(name.indexOf("xmlns") == 0) { |
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| 64 | this.setNamespace(name.split(":")[1] || "", attr.value); |
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| 65 | } else { |
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| 66 | obj[name] = attr.value; |
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| 67 | } |
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| 68 | } |
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| 69 | obj.featureTypes = complexTypes; |
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| 70 | obj.targetPrefix = this.namespaceAlias[obj.targetNamespace]; |
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| 71 | |
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| 72 | // map complexTypes to names of customTypes |
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| 73 | var complexType, customType; |
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| 74 | for(var i=0, len=complexTypes.length; i<len; ++i) { |
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| 75 | complexType = complexTypes[i]; |
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| 76 | customType = customTypes[complexType.typeName]; |
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| 77 | if(customTypes[complexType.typeName]) { |
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| 78 | complexType.typeName = customType.name; |
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| 79 | } |
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| 80 | } |
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| 81 | }, |
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| 82 | "complexType": function(node, obj) { |
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| 83 | var complexType = { |
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| 84 | // this is a temporary typeName, it will be overwritten by |
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| 85 | // the schema reader with the metadata found in the |
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| 86 | // customTypes hash |
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| 87 | "typeName": node.getAttribute("name") |
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| 88 | }; |
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| 89 | this.readChildNodes(node, complexType); |
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| 90 | obj.complexTypes.push(complexType); |
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| 91 | }, |
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| 92 | "complexContent": function(node, obj) { |
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| 93 | this.readChildNodes(node, obj); |
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| 94 | }, |
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| 95 | "extension": function(node, obj) { |
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| 96 | this.readChildNodes(node, obj); |
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| 97 | }, |
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| 98 | "sequence": function(node, obj) { |
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| 99 | var sequence = { |
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| 100 | elements: [] |
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| 101 | }; |
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| 102 | this.readChildNodes(node, sequence); |
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| 103 | obj.properties = sequence.elements; |
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| 104 | }, |
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| 105 | "element": function(node, obj) { |
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| 106 | if(obj.elements) { |
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| 107 | var element = {}; |
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| 108 | var attributes = node.attributes; |
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| 109 | var attr; |
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| 110 | for(var i=0, len=attributes.length; i<len; ++i) { |
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| 111 | attr = attributes[i]; |
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| 112 | element[attr.name] = attr.value; |
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| 113 | } |
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| 114 | |
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| 115 | var type = element.type; |
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| 116 | if(!type) { |
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| 117 | type = {}; |
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| 118 | this.readChildNodes(node, type); |
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| 119 | element.restriction = type; |
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| 120 | element.type = type.base; |
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| 121 | } |
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| 122 | var fullType = type.base || type; |
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| 123 | element.localType = fullType.split(":").pop(); |
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| 124 | obj.elements.push(element); |
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| 125 | } |
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| 126 | |
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| 127 | if(obj.complexTypes) { |
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| 128 | var type = node.getAttribute("type"); |
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| 129 | var localType = type.split(":").pop(); |
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| 130 | obj.customTypes[localType] = { |
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| 131 | "name": node.getAttribute("name"), |
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| 132 | "type": type |
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| 133 | }; |
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| 134 | } |
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| 135 | }, |
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| 136 | "simpleType": function(node, obj) { |
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| 137 | this.readChildNodes(node, obj); |
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| 138 | }, |
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| 139 | "restriction": function(node, obj) { |
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| 140 | obj.base = node.getAttribute("base"); |
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| 141 | this.readRestriction(node, obj); |
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| 142 | } |
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| 143 | } |
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| 144 | }, |
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| 145 | |
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| 146 | /** |
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| 147 | * Method: readRestriction |
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| 148 | * Reads restriction defined in the child nodes of a restriction element |
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| 149 | * |
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| 150 | * Parameters: |
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| 151 | * node {DOMElement} - the node to parse |
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| 152 | * obj {Object} - the object that receives the read result |
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| 153 | */ |
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| 154 | readRestriction: function(node, obj) { |
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| 155 | var children = node.childNodes; |
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| 156 | var child, nodeName, value; |
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| 157 | for(var i=0, len=children.length; i<len; ++i) { |
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| 158 | child = children[i]; |
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| 159 | if(child.nodeType == 1) { |
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| 160 | nodeName = child.nodeName.split(":").pop(); |
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| 161 | value = child.getAttribute("value"); |
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| 162 | if(!obj[nodeName]) { |
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| 163 | obj[nodeName] = value; |
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| 164 | } else { |
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| 165 | if(typeof obj[nodeName] == "string") { |
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| 166 | obj[nodeName] = [obj[nodeName]]; |
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| 167 | } |
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| 168 | obj[nodeName].push(value); |
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| 169 | } |
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| 170 | } |
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| 171 | } |
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| 172 | }, |
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| 173 | |
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| 174 | /** |
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| 175 | * Method: read |
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| 176 | * |
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| 177 | * Parameters: |
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| 178 | * data - {DOMElement|String} A WFS DescribeFeatureType document. |
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| 179 | * |
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| 180 | * Returns: |
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| 181 | * {Object} An object representing the WFS DescribeFeatureType response. |
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| 182 | */ |
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| 183 | read: function(data) { |
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| 184 | if(typeof data == "string") { |
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| 185 | data = OpenLayers.Format.XML.prototype.read.apply(this, [data]); |
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| 186 | } |
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| 187 | if(data && data.nodeType == 9) { |
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| 188 | data = data.documentElement; |
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| 189 | } |
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| 190 | var schema = {}; |
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| 191 | this.readNode(data, schema); |
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| 192 | |
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| 193 | return schema; |
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| 194 | }, |
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| 195 | |
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| 196 | CLASS_NAME: "OpenLayers.Format.WFSDescribeFeatureType" |
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| 197 | |
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| 198 | }); |
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