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Added WMSDescribeLayer format. Thanks bartvde and sbenthall for the patch. I made some minor modifications:

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* changed file structure to match other formats (i.e. put version 1.1 parser in a WMSDescribeLayer subfolder)
 * fixed a type in the example which showed owsURL instead of owsType
r=me (closes #1201)


git-svn-id: http://svn.openlayers.org/trunk/openlayers@9146 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
ahocevar
2009-03-31 15:06:02 +00:00
parent cf5aa98cce
commit 61b5293692
7 changed files with 275 additions and 0 deletions
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90
lib/OpenLayers/Format/WMSDescribeLayer.js Normal file
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/* Copyright (c) 2006-2008 MetaCarta, Inc., published under the Clear BSD
* license. See http://svn.openlayers.org/trunk/openlayers/license.txt for the
* full text of the license. */
/**
* @requires OpenLayers/Format/XML.js
*/
/**
* Class: OpenLayers.Format.WMSDescribeLayer
* Read SLD WMS DescribeLayer response
* DescribeLayer is meant to couple WMS to WFS and WCS
*
* Inherits from:
* - <OpenLayers.Format.XML>
*/
OpenLayers.Format.WMSDescribeLayer = OpenLayers.Class(OpenLayers.Format.XML, {
/**
* APIProperty: defaultVersion
* {String} Version number to assume if none found. Default is "1.1.1".
*/
defaultVersion: "1.1.1",
/**
* APIProperty: version
* {String} Specify a version string if one is known.
*/
version: null,
/**
* Constructor: OpenLayers.Format.WMSDescribeLayer
* Create a new parser for WMS DescribeLayer responses.
*
* Parameters:
* options - {Object} An optional object whose properties will be set on
* this instance.
*/
initialize: function(options) {
OpenLayers.Format.XML.prototype.initialize.apply(this, [options]);
this.options = options;
},
/**
* APIMethod: read
* Read DescribeLayer data from a string, and return the response.
* The OGC currently defines 2 formats which are allowed for output,
* so we need to parse these 2 types
*
* Parameters:
* data - {String} or {DOMElement} data to read/parse.
*
* Returns:
* {Array} Array of {<LayerDescription>} objects which have:
* - {String} owsType: WFS/WCS
* - {String} owsURL: the online resource
* - {String} typeName: the name of the typename on the service
*/
read: function(data) {
if(typeof data == "string") {
data = OpenLayers.Format.XML.prototype.read.apply(this, [data]);
}
var root = data.documentElement;
var version = this.version;
if(!version) {
version = root.getAttribute("version");
if(!version) {
version = this.defaultVersion;
}
}
// these are identical to us, but some WMS use 1.1.1 and some use 1.1.0
if (version == "1.1.1" || version == "1.1.0") {
version = "1.1";
}
var constructor = OpenLayers.Format.WMSDescribeLayer[
"v" + version.replace(/\./g, "_")
];
if(!constructor) {
throw "Can't find a WMS DescribeLayer parser for version " +
version;
}
var parser = new constructor(this.options);
var describelayer = parser.read(data);
describelayer.version = version;
return describelayer;
},
CLASS_NAME: "OpenLayers.Format.WMSDescribeLayer"
});

96
lib/OpenLayers/Format/WMSDescribeLayer/v1_1.js Normal file
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/* Copyright (c) 2006-2008 MetaCarta, Inc., published under the Clear BSD
* license. See http://svn.openlayers.org/trunk/openlayers/license.txt for the
* full text of the license. */
/**
* @requires OpenLayers/Format/WMSDescribeLayer.js
*/
/**
* Class: OpenLayers.Format.WMSDescribeLayer.v1_1
* Read SLD WMS DescribeLayer response for WMS 1.1.X
* WMS 1.1.X is tightly coupled to SLD 1.0.0
*
* Example DescribeLayer request:
* http://demo.opengeo.org/geoserver/wms?request=DescribeLayer&version=1.1.1&layers=topp:states
*
* Inherits from:
* - <OpenLayers.Format.WMSDescribeLayer>
*/
OpenLayers.Format.WMSDescribeLayer.v1_1 = OpenLayers.Class(
OpenLayers.Format.WMSDescribeLayer, {
/**
* Constructor: OpenLayers.Format.WMSDescribeLayer
* Create a new parser for WMS DescribeLayer responses.
*
* Parameters:
* options - {Object} An optional object whose properties will be set on
* this instance.
*/
initialize: function(options) {
OpenLayers.Format.WMSDescribeLayer.prototype.initialize.apply(this,
[options]);
},
/**
* APIMethod: read
* Read DescribeLayer data from a string, and return the response.
* The OGC defines 2 formats which are allowed for output,
* so we need to parse these 2 types for version 1.1.X
*
* Parameters:
* data - {String} or {DOMElement} data to read/parse.
*
* Returns:
* {Array} Array of {<LayerDescription>} objects which have:
* - {String} owsType: WFS/WCS
* - {String} owsURL: the online resource
* - {String} typeName: the name of the typename on the service
*/
read: function(data) {
if(typeof data == "string") {
data = OpenLayers.Format.XML.prototype.read.apply(this, [data]);
}
var root = data.documentElement;
var children = root.childNodes;
var describelayer = [];
for(var i=0; i<children.length; ++i) {
childNode = children[i];
nodeName = childNode.nodeName;
if (nodeName == 'LayerDescription') {
var owsType = '';
var owsURL = '';
var typeName = '';
// check for owsType and owsURL attributes
if (childNode.getAttribute('owsType')) {
owsType = childNode.getAttribute('owsType');
owsURL = childNode.getAttribute('owsURL');
} else {
// look for wfs or wcs attribute
if (childNode.getAttribute('wfs') != '') {
owsType = 'WFS';
owsURL = childNode.getAttribute('wfs');
} else if (childNode.getAttribute('wcs') != '') {
owsType = 'WCS';
owsURL = childNode.getAttribute('wcs');
}
}
// look for Query child
query = childNode.getElementsByTagName('Query');
if(query.length > 0) {
typeName = query[0].getAttribute('typeName');
if (!typeName) {
// because of Ionic bug
typeName = query[0].getAttribute('typename');
}
}
describelayer.push({owsType: owsType, owsURL: owsURL, typeName: typeName});
}
}
return describelayer;
},
CLASS_NAME: "OpenLayers.Format.WMSDescribeLayer.v1_1"
});