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/* Copyright (c) 2006-2013 by OpenLayers Contributors (see authors.txt for
* full list of contributors). Published under the 2-clause BSD license.
* See license.txt in the OpenLayers distribution or repository for the
* full text of the license. */
/**
* @requires OpenLayers/Format/XML.js
* @requires OpenLayers/Format/OGCExceptionReport.js
*/
/**
* Class: OpenLayers.Format.WFSDescribeFeatureType
* Read WFS DescribeFeatureType response
*
* Inherits from:
* - <OpenLayers.Format.XML>
*/
OpenLayers.Format.WFSDescribeFeatureType = OpenLayers.Class(
OpenLayers.Format.XML, {
/**
* Property: regExes
* Compiled regular expressions for manipulating strings.
*/
regExes: {
trimSpace: (/^\s*|\s*$/g)
},
/**
* Property: namespaces
* {Object} Mapping of namespace aliases to namespace URIs.
*/
namespaces: {
xsd: "http://www.w3.org/2001/XMLSchema"
},
/**
* Constructor: OpenLayers.Format.WFSDescribeFeatureType
* Create a new parser for WFS DescribeFeatureType responses.
*
* Parameters:
* options - {Object} An optional object whose properties will be set on
* this instance.
*/
/**
* Property: readers
* Contains public functions, grouped by namespace prefix, that will
* be applied when a namespaced node is found matching the function
* name. The function will be applied in the scope of this parser
* with two arguments: the node being read and a context object passed
* from the parent.
*/
readers: {
"xsd": {
"schema": function(node, obj) {
var complexTypes = [];
var customTypes = {};
var schema = {
complexTypes: complexTypes,
customTypes: customTypes
};
var i, len;
this.readChildNodes(node, schema);
var attributes = node.attributes;
var attr, name;
for(i=0, len=attributes.length; i<len; ++i) {
attr = attributes[i];
name = attr.name;
if(name.indexOf("xmlns") === 0) {
this.setNamespace(name.split(":")[1] || "", attr.value);
} else {
obj[name] = attr.value;
}
}
obj.featureTypes = complexTypes;
obj.targetPrefix = this.namespaceAlias[obj.targetNamespace];
// map complexTypes to names of customTypes
var complexType, customType;
for(i=0, len=complexTypes.length; i<len; ++i) {
complexType = complexTypes[i];
customType = customTypes[complexType.typeName];
if(customTypes[complexType.typeName]) {
complexType.typeName = customType.name;
}
}
},
"complexType": function(node, obj) {
var complexType = {
// this is a temporary typeName, it will be overwritten by
// the schema reader with the metadata found in the
// customTypes hash
"typeName": node.getAttribute("name")
};
this.readChildNodes(node, complexType);
obj.complexTypes.push(complexType);
},
"complexContent": function(node, obj) {
this.readChildNodes(node, obj);
},
"extension": function(node, obj) {
this.readChildNodes(node, obj);
},
"sequence": function(node, obj) {
var sequence = {
elements: []
};
this.readChildNodes(node, sequence);
obj.properties = sequence.elements;
},
"element": function(node, obj) {
var type;
if(obj.elements) {
var element = {};
var attributes = node.attributes;
var attr;
for(var i=0, len=attributes.length; i<len; ++i) {
attr = attributes[i];
element[attr.name] = attr.value;
}
type = element.type;
if(!type) {
type = {};
this.readChildNodes(node, type);
element.restriction = type;
element.type = type.base;
}
var fullType = type.base || type;
element.localType = fullType.split(":").pop();
obj.elements.push(element);
this.readChildNodes(node, element);
}
if(obj.complexTypes) {
type = node.getAttribute("type");
var localType = type.split(":").pop();
obj.customTypes[localType] = {
"name": node.getAttribute("name"),
"type": type
};
}
},
"annotation": function(node, obj) {
obj.annotation = {};
this.readChildNodes(node, obj.annotation);
},
"appinfo": function(node, obj) {
if (!obj.appinfo) {
obj.appinfo = [];
}
obj.appinfo.push(this.getChildValue(node));
},
"documentation": function(node, obj) {
if (!obj.documentation) {
obj.documentation = [];
}
var value = this.getChildValue(node);
obj.documentation.push({
lang: node.getAttribute("xml:lang"),
textContent: value.replace(this.regExes.trimSpace, "")
});
},
"simpleType": function(node, obj) {
this.readChildNodes(node, obj);
},
"restriction": function(node, obj) {
obj.base = node.getAttribute("base");
this.readRestriction(node, obj);
}
}
},
/**
* Method: readRestriction
* Reads restriction defined in the child nodes of a restriction element
*
* Parameters:
* node - {DOMElement} the node to parse
* obj - {Object} the object that receives the read result
*/
readRestriction: function(node, obj) {
var children = node.childNodes;
var child, nodeName, value;
for(var i=0, len=children.length; i<len; ++i) {
child = children[i];
if(child.nodeType == 1) {
nodeName = child.nodeName.split(":").pop();
value = child.getAttribute("value");
if(!obj[nodeName]) {
obj[nodeName] = value;
} else {
if(typeof obj[nodeName] == "string") {
obj[nodeName] = [obj[nodeName]];
}
obj[nodeName].push(value);
}
}
}
},
/**
* Method: read
*
* Parameters:
* data - {DOMElement|String} A WFS DescribeFeatureType document.
*
* Returns:
* {Object} An object representing the WFS DescribeFeatureType response.
*/
read: function(data) {
if(typeof data == "string") {
data = OpenLayers.Format.XML.prototype.read.apply(this, [data]);
}
if(data && data.nodeType == 9) {
data = data.documentElement;
}
var schema = {};
if (data.nodeName.split(":").pop() === 'ExceptionReport') {
// an exception must have occurred, so parse it
var parser = new OpenLayers.Format.OGCExceptionReport();
schema.error = parser.read(data);
} else {
this.readNode(data, schema);
}
return schema;
},
CLASS_NAME: "OpenLayers.Format.WFSDescribeFeatureType"
});
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