1 | /* Copyright (c) 2006-2010 by OpenLayers Contributors (see authors.txt for |
---|
2 | * full list of contributors). Published under the Clear BSD license. |
---|
3 | * See http://svn.openlayers.org/trunk/openlayers/license.txt for the |
---|
4 | * full text of the license. */ |
---|
5 | |
---|
6 | /** |
---|
7 | * @requires OpenLayers/Format/XML.js |
---|
8 | * @requires OpenLayers/Filter/FeatureId.js |
---|
9 | * @requires OpenLayers/Filter/Logical.js |
---|
10 | * @requires OpenLayers/Filter/Comparison.js |
---|
11 | */ |
---|
12 | |
---|
13 | /** |
---|
14 | * Class: OpenLayers.Format.Filter |
---|
15 | * Read/Wite ogc:Filter. Create a new instance with the <OpenLayers.Format.Filter> |
---|
16 | * constructor. |
---|
17 | * |
---|
18 | * Inherits from: |
---|
19 | * - <OpenLayers.Format.XML> |
---|
20 | */ |
---|
21 | OpenLayers.Format.Filter = OpenLayers.Class(OpenLayers.Format.XML, { |
---|
22 | |
---|
23 | /** |
---|
24 | * APIProperty: defaultVersion |
---|
25 | * {String} Version number to assume if none found. Default is "1.0.0". |
---|
26 | */ |
---|
27 | defaultVersion: "1.0.0", |
---|
28 | |
---|
29 | /** |
---|
30 | * APIProperty: version |
---|
31 | * {String} Specify a version string if one is known. |
---|
32 | */ |
---|
33 | version: null, |
---|
34 | |
---|
35 | /** |
---|
36 | * Property: parser |
---|
37 | * {Object} Instance of the versioned parser. Cached for multiple read and |
---|
38 | * write calls of the same version. |
---|
39 | */ |
---|
40 | parser: null, |
---|
41 | |
---|
42 | /** |
---|
43 | * Constructor: OpenLayers.Format.Filter |
---|
44 | * Create a new parser for Filter. |
---|
45 | * |
---|
46 | * Parameters: |
---|
47 | * options - {Object} An optional object whose properties will be set on |
---|
48 | * this instance. |
---|
49 | */ |
---|
50 | initialize: function(options) { |
---|
51 | OpenLayers.Format.XML.prototype.initialize.apply(this, [options]); |
---|
52 | }, |
---|
53 | |
---|
54 | /** |
---|
55 | * APIMethod: write |
---|
56 | * Write an ogc:Filter given a filter object. |
---|
57 | * |
---|
58 | * Parameters: |
---|
59 | * filter - {<OpenLayers.Filter>} An filter. |
---|
60 | * options - {Object} Optional configuration object. |
---|
61 | * |
---|
62 | * Returns: |
---|
63 | * {Elment} An ogc:Filter element node. |
---|
64 | */ |
---|
65 | write: function(filter, options) { |
---|
66 | var version = (options && options.version) || |
---|
67 | this.version || this.defaultVersion; |
---|
68 | if(!this.parser || this.parser.VERSION != version) { |
---|
69 | var format = OpenLayers.Format.Filter[ |
---|
70 | "v" + version.replace(/\./g, "_") |
---|
71 | ]; |
---|
72 | if(!format) { |
---|
73 | throw "Can't find a Filter parser for version " + |
---|
74 | version; |
---|
75 | } |
---|
76 | this.parser = new format(this.options); |
---|
77 | } |
---|
78 | return this.parser.write(filter); |
---|
79 | //return OpenLayers.Format.XML.prototype.write.apply(this, [root]); |
---|
80 | }, |
---|
81 | |
---|
82 | /** |
---|
83 | * APIMethod: read |
---|
84 | * Read and Filter doc and return an object representing the Filter. |
---|
85 | * |
---|
86 | * Parameters: |
---|
87 | * data - {String | DOMElement} Data to read. |
---|
88 | * |
---|
89 | * Returns: |
---|
90 | * {<OpenLayers.Filter>} A filter object. |
---|
91 | */ |
---|
92 | read: function(data) { |
---|
93 | if(typeof data == "string") { |
---|
94 | data = OpenLayers.Format.XML.prototype.read.apply(this, [data]); |
---|
95 | } |
---|
96 | var version = this.version; |
---|
97 | if(!version) { |
---|
98 | version = this.defaultVersion; |
---|
99 | } |
---|
100 | if(!this.parser || this.parser.VERSION != version) { |
---|
101 | var format = OpenLayers.Format.Filter[ |
---|
102 | "v" + version.replace(/\./g, "_") |
---|
103 | ]; |
---|
104 | if(!format) { |
---|
105 | throw "Can't find a Filter parser for version " + |
---|
106 | version; |
---|
107 | } |
---|
108 | this.parser = new format(this.options); |
---|
109 | } |
---|
110 | var filter = this.parser.read(data); |
---|
111 | return filter; |
---|
112 | }, |
---|
113 | |
---|
114 | CLASS_NAME: "OpenLayers.Format.Filter" |
---|
115 | }); |
---|