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/*
YUI 3.17.2 (build 9c3c78e)
Copyright 2014 Yahoo! Inc. All rights reserved.
Licensed under the BSD License.
http://yuilibrary.com/license/
*/

YUI.add('datasource-xmlschema', function (Y, NAME) {

/**
 * Extends DataSource with schema-parsing on XML data.
 *
 * @module datasource
 * @submodule datasource-xmlschema
 */

/**
 * Adds schema-parsing to the DataSource Utility.
 * @class DataSourceXMLSchema
 * @extends Plugin.Base
 */
var DataSourceXMLSchema = function() {
    DataSourceXMLSchema.superclass.constructor.apply(this, arguments);
};

Y.mix(DataSourceXMLSchema, {
    /**
     * The namespace for the plugin. This will be the property on the host which
     * references the plugin instance.
     *
     * @property NS
     * @type String
     * @static
     * @final
     * @value "schema"
     */
    NS: "schema",

/**
     * Class name.
     *
     * @property NAME
     * @type String
     * @static
     * @final
     * @value "dataSourceXMLSchema"
     */
    NAME: "dataSourceXMLSchema",

/////////////////////////////////////////////////////////////////////////////
    //
    // DataSourceXMLSchema Attributes
    //
    /////////////////////////////////////////////////////////////////////////////

ATTRS: {
        schema: {
            //value: {}
        }
    }
});

Y.extend(DataSourceXMLSchema, Y.Plugin.Base, {
    /**
    * Internal init() handler.
    *
    * @method initializer
    * @param config {Object} Config object.
    * @private
    */
    initializer: function(config) {
        this.doBefore("_defDataFn", this._beforeDefDataFn);
    },

/**
     * Parses raw data into a normalized response.
     *
     * @method _beforeDefDataFn
     * @param tId {Number} Unique transaction ID.
     * @param request {Object} The request.
     * @param callback {Object} The callback object with the following properties:
     *     <dl>
     *         <dt>success (Function)</dt> <dd>Success handler.</dd>
     *         <dt>failure (Function)</dt> <dd>Failure handler.</dd>
     *     </dl>
     * @param data {Object} Raw data.
     * @protected
     */
    _beforeDefDataFn: function(e) {
        var schema = this.get('schema'),
            payload = e.details[0],
            // TODO: Do I need to sniff for DS.IO + responseXML.nodeType 9?
            data = Y.XML.parse(e.data.responseText) || e.data;

payload.response = Y.DataSchema.XML.apply.call(this, schema, data) || {
            meta: {},
            results: data
        };

this.get("host").fire("response", payload);

return new Y.Do.Halt("DataSourceXMLSchema plugin halted _defDataFn");
    }
});

Y.namespace('Plugin').DataSourceXMLSchema = DataSourceXMLSchema;

}, '3.17.2', {"requires": ["datasource-local", "plugin", "datatype-xml", "dataschema-xml"]});