text: YUI.add('dataschema-base', function(Y) {
  
  /**
   * The DataSchema utility provides a common configurable interface for widgets to
   * apply a given schema to a variety of data.
   *
   * @module dataschema
   */
  
  /**
   * Provides the base DataSchema implementation, which can be extended to 
   * create DataSchemas for specific data formats, such XML, JSON, text and
   * arrays.
   *
   * @module dataschema
   * @submodule dataschema-base
   */
  
  var LANG = Y.Lang,
  /**
   * Base class for the YUI DataSchema Utility.
   * @class DataSchema.Base
   * @static
   */
      SchemaBase = {
      /**
       * Overridable method returns data as-is.
       *
       * @method apply
       * @param schema {Object} Schema to apply.
       * @param data {Object} Data.
       * @return {Object} Schema-parsed data.
       * @static
       */
      apply: function(schema, data) {
          return data;
      },
      
      /**
       * Applies field parser, if defined
       *
       * @method parse
       * @param value {Object} Original value.
       * @param field {Object} Field.
       * @return {Object} Type-converted value.
       */
      parse: function(value, field) {
          if(field.parser) {
              var parser = (LANG.isFunction(field.parser)) ?
              field.parser : Y.Parsers[field.parser+''];
              if(parser) {
                  value = parser.call(this, value);
              }
              else {
              }
          }
          return value;
      }
  };
  
  Y.namespace("DataSchema").Base = SchemaBase;
  Y.namespace("Parsers");
  
  
  }, '@VERSION@' ,{requires:['base']});
  YUI.add('dataschema-json', function(Y) {
  
  /**
   * Provides a DataSchema implementation which can be used to work with JSON data.
   *
   * @module dataschema
   * @submodule dataschema-json
   */
  
  /**
   * JSON subclass for the DataSchema Utility.
   * @class DataSchema.JSON
   * @extends DataSchema.Base
   * @static
   */
  var LANG = Y.Lang,
  
      SchemaJSON = {
  
          /////////////////////////////////////////////////////////////////////////////
          //
          // DataSchema.JSON static methods
          //
          /////////////////////////////////////////////////////////////////////////////
          /**
           * Utility function converts JSON locator strings into walkable paths
           *
           * @method DataSchema.JSON.getPath
           * @param locator {String} JSON value locator.
           * @return {String[]} Walkable path to data value.
           * @static
           */
          getPath: function(locator) {
              var path = null,
                  keys = [],
                  i = 0;
  
              if (locator) {
                  // Strip the ["string keys"] and [1] array indexes
                  locator = locator.
                      replace(/\[(['"])(.*?)\1\]/g,
                      function (x,$1,$2) {keys[i]=$2;return '.@'+(i++);}).
                      replace(/\[(\d+)\]/g,
                      function (x,$1) {keys[i]=parseInt($1,10)|0;return '.@'+(i++);}).
                      replace(/^\./,''); // remove leading dot
  
                  // Validate against problematic characters.
                  if (!/[^\w\.\$@]/.test(locator)) {
                      path = locator.split('.');
                      for (i=path.length-1; i >= 0; --i) {
                          if (path[i].charAt(0) === '@') {
                              path[i] = keys[parseInt(path[i].substr(1),10)];
                          }
                      }
                  }
                  else {
                  }
              }
              return path;
          },
  
          /**
           * Utility function to walk a path and return the value located there.
           *
           * @method DataSchema.JSON.getLocationValue
           * @param path {String[]} Locator path.
           * @param data {String} Data to traverse.
           * @return {Object} Data value at location.
           * @static
           */
          getLocationValue: function (path, data) {
              var i = 0,
                  len = path.length;
              for (;i<len;i++) {
                  if(
                      LANG.isObject(data) &&
                      (path[i] in data)
                  ) {
                      data = data[path[i]];
                  }
                  else {
                      data = undefined;
                      break;
                  }
              }
              return data;
          },
  
          /**
           * Applies a given schema to given JSON data.
           *
           * @method apply
           * @param schema {Object} Schema to apply.
           * @param data {Object} JSON data.
           * @return {Object} Schema-parsed data.
           * @static
           */
          apply: function(schema, data) {
              var data_in = data,
                  data_out = {results:[],meta:{}};
  
              // Convert incoming JSON strings
              if(!LANG.isObject(data)) {
                  try {
                      data_in = Y.JSON.parse(data);
                  }
                  catch(e) {
                      data_out.error = e;
                      return data_out;
                  }
              }
  
              if(LANG.isObject(data_in) && schema) {
                  // Parse results data
                  if(!LANG.isUndefined(schema.resultListLocator)) {
                      data_out = SchemaJSON._parseResults.call(this, schema, data_in, data_out);
                  }
  
                  // Parse meta data
                  if(!LANG.isUndefined(schema.metaFields)) {
                      data_out = SchemaJSON._parseMeta(schema.metaFields, data_in, data_out);
                  }
              }
              else {
                  data_out.error = new Error("JSON schema parse failure");
              }
  
              return data_out;
          },
  
          /**
           * Schema-parsed list of results from full data
           *
           * @method _parseResults
           * @param schema {Object} Schema to parse against.
           * @param json_in {Object} JSON to parse.
           * @param data_out {Object} In-progress parsed data to update.
           * @return {Object} Parsed data object.
           * @static
           * @protected
           */
          _parseResults: function(schema, json_in, data_out) {
              var results = [],
                  path,
                  error;
  
              if(schema.resultListLocator) {
                  path = SchemaJSON.getPath(schema.resultListLocator);
                  if(path) {
                      results = SchemaJSON.getLocationValue(path, json_in);
                      if (results === undefined) {
                          data_out.results = [];
                          error = new Error("JSON results retrieval failure");
                      }
                      else {
                          if(LANG.isArray(results)) {
                              // if no result fields are passed in, then just take the results array whole-hog
                              // Sometimes you're getting an array of strings, or want the whole object,
                              // so resultFields don't make sense.
                              if (LANG.isArray(schema.resultFields)) {
                                  data_out = SchemaJSON._getFieldValues.call(this, schema.resultFields, results, data_out);
                              }
                              else {
                                  data_out.results = results;
                              }
                          }
                          else {
                              data_out.results = [];
                              error = new Error("JSON Schema fields retrieval failure");
                          }
                      }
                  }
                  else {
                      error = new Error("JSON Schema results locator failure");
                  }
  
                  if (error) {
                      data_out.error = error;
                  }
  
              }
              return data_out;
          },
  
          /**
           * Get field data values out of list of full results
           *
           * @method _getFieldValues
           * @param fields {Array} Fields to find.
           * @param array_in {Array} Results to parse.
           * @param data_out {Object} In-progress parsed data to update.
           * @return {Object} Parsed data object.
           * @static
           * @protected
           */
          _getFieldValues: function(fields, array_in, data_out) {
              var results = [],
                  len = fields.length,
                  i, j,
                  field, key, locator, path, parser,
                  simplePaths = [], complexPaths = [], fieldParsers = [],
                  result, record;
  
              // First collect hashes of simple paths, complex paths, and parsers
              for (i=0; i<len; i++) {
                  field = fields[i]; // A field can be a simple string or a hash
                  key = field.key || field; // Find the key
                  locator = field.locator || key; // Find the locator
  
                  // Validate and store locators for later
                  path = SchemaJSON.getPath(locator);
                  if (path) {
                      if (path.length === 1) {
                          simplePaths[simplePaths.length] = {key:key, path:path[0]};
                      } else {
                          complexPaths[complexPaths.length] = {key:key, path:path};
                      }
                  } else {
                  }
  
                  // Validate and store parsers for later
                  //TODO: use Y.DataSchema.parse?
                  parser = (LANG.isFunction(field.parser)) ? field.parser : Y.Parsers[field.parser+''];
                  if (parser) {
                      fieldParsers[fieldParsers.length] = {key:key, parser:parser};
                  }
              }
  
              // Traverse list of array_in, creating records of simple fields,
              // complex fields, and applying parsers as necessary
              for (i=array_in.length-1; i>=0; --i) {
                  record = {};
                  result = array_in[i];
                  if(result) {
                      // Cycle through simpleLocators
                      for (j=simplePaths.length-1; j>=0; --j) {
                          // Bug 1777850: The result might be an array instead of object
                          record[simplePaths[j].key] = Y.DataSchema.Base.parse.call(this,
                                  (LANG.isUndefined(result[simplePaths[j].path]) ?
                                  result[j] : result[simplePaths[j].path]), simplePaths[j]);
                      }
  
                      // Cycle through complexLocators
                      for (j=complexPaths.length - 1; j>=0; --j) {
                          record[complexPaths[j].key] = Y.DataSchema.Base.parse.call(this,
                              (SchemaJSON.getLocationValue(complexPaths[j].path, result)), complexPaths[j] );
                      }
  
                      // Cycle through fieldParsers
                      for (j=fieldParsers.length-1; j>=0; --j) {
                          key = fieldParsers[j].key;
                          record[key] = fieldParsers[j].parser.call(this, record[key]);
                          // Safety net
                          if (LANG.isUndefined(record[key])) {
                              record[key] = null;
                          }
                      }
                      results[i] = record;
                  }
              }
              data_out.results = results;
              return data_out;
          },
  
          /**
           * Parses results data according to schema
           *
           * @method _parseMeta
           * @param metaFields {Object} Metafields definitions.
           * @param json_in {Object} JSON to parse.
           * @param data_out {Object} In-progress parsed data to update.
           * @return {Object} Schema-parsed meta data.
           * @static
           * @protected
           */
          _parseMeta: function(metaFields, json_in, data_out) {
              if(LANG.isObject(metaFields)) {
                  var key, path;
                  for(key in metaFields) {
                      if (metaFields.hasOwnProperty(key)) {
                          path = SchemaJSON.getPath(metaFields[key]);
                          if (path && json_in) {
                              data_out.meta[key] = SchemaJSON.getLocationValue(path, json_in);
                          }
                      }
                  }
              }
              else {
                  data_out.error = new Error("JSON meta data retrieval failure");
              }
              return data_out;
          }
      };
  
  Y.DataSchema.JSON = Y.mix(SchemaJSON, Y.DataSchema.Base);
  
  
  }, '@VERSION@' ,{requires:['dataschema-base','json']});
  YUI.add('dataschema-xml', function(Y) {
  
  /**
   * Provides a DataSchema implementation which can be used to work with XML data.
   *
   * @module dataschema
   * @submodule dataschema-xml
   */
  var LANG = Y.Lang,
  
      /**
       * XML subclass for the DataSchema Utility.
       * @class DataSchema.XML
       * @extends DataSchema.Base
       * @static
       */
      SchemaXML = {
  
          /////////////////////////////////////////////////////////////////////////////
          //
          // DataSchema.XML static methods
          //
          /////////////////////////////////////////////////////////////////////////////
          /**
           * Applies a given schema to given XML data.
           *
           * @method apply
           * @param schema {Object} Schema to apply.
           * @param data {XMLDoc} XML document.
           * @return {Object} Schema-parsed data.
           * @static
           */
          apply: function(schema, data) {
              var xmldoc = data, // unnecessary variables
                  data_out = {results:[],meta:{}};
  
              if(xmldoc && xmldoc.nodeType && (9 === xmldoc.nodeType || 1 === xmldoc.nodeType || 11 === xmldoc.nodeType) && schema) {
                  // Parse results data
                  data_out = SchemaXML._parseResults.call(this, schema, xmldoc, data_out);
  
                  // Parse meta data
                  data_out = SchemaXML._parseMeta.call(this, schema.metaFields, xmldoc, data_out);
              }
              else {
                  data_out.error = new Error("XML schema parse failure");
              }
  
              return data_out;
          },
  
          /**
           * Get an XPath-specified value for a given field from an XML node or document.
           *
           * @method _getLocationValue
           * @param field {String | Object} Field definition.
           * @param context {Object} XML node or document to search within.
           * @return {Object} Data value or null.
           * @static
           * @protected
           */
          _getLocationValue: function(field, context) {
              var locator = field.locator || field.key || field,
                  xmldoc = context.ownerDocument || context,
                  result, res, value = null;
  
              try {
                  result = SchemaXML._getXPathResult(locator, context, xmldoc);
                  while(res = result.iterateNext()) {
                      value = res.textContent || res.value || res.text || res.innerHTML || null;
                  }
  
                  return Y.DataSchema.Base.parse.call(this, value, field);
              }
              catch(e) {
              }
  
              return null;
          },
  
          /**
           * Fetches the XPath-specified result for a given location in an XML node or document.
           *
           * @param locator {String} The XPath location.
           * @param context {Object} XML node or document to search within.
           * @param xmldoc {Object} XML document to resolve namespace.
           * @return {Object} Data collection or null.
           * @static
           * @protected
           */
          _getXPathResult: function(locator, context, xmldoc) {
              // Standards mode
              if (! LANG.isUndefined(xmldoc.evaluate)) {
                  return xmldoc.evaluate(locator, context, xmldoc.createNSResolver(context.ownerDocument ? context.ownerDocument.documentElement : context.documentElement), 0, null);
              }
              // IE mode
              else {
                  var values=[], locatorArray = locator.split(/\b\/\b/), i=0, l=locatorArray.length, location, subloc, m, isNth;
                  
                  // XPath is supported
                  try {
                      // this fixes the IE 5.5+ issue where childnode selectors begin at 0 instead of 1
                      xmldoc.setProperty("SelectionLanguage", "XPath");
                      values = context.selectNodes(locator);
                  }
                  // Fallback for DOM nodes and fragments
                  catch (e) {
                      // Iterate over each locator piece
                      for (; i<l && context; i++) {
                          location = locatorArray[i];
  
                          // grab nth child []
                          if ((location.indexOf("[") > -1) && (location.indexOf("]") > -1)) {
                              subloc = location.slice(location.indexOf("[")+1, location.indexOf("]"));
                              //XPath is 1-based while DOM is 0-based
                              subloc--;
                              context = context.children[subloc];
                              isNth = true;
                          }
                          // grab attribute value @
                          else if (location.indexOf("@") > -1) {
                              subloc = location.substr(location.indexOf("@"));
                              context = subloc ? context.getAttribute(subloc.replace('@', '')) : context;
                          }
                          // grab that last instance of tagName
                          else if (-1 < location.indexOf("//")) {
                              subloc = context.getElementsByTagName(location.substr(2));
                              context = subloc.length ? subloc[subloc.length - 1] : null;
                          }
                          // find the last matching location in children
                          else if (l != i + 1) {
                              for (m=context.childNodes.length-1; 0 <= m; m-=1) {
                                  if (location === context.childNodes[m].tagName) {
                                      context = context.childNodes[m];
                                      m = -1;
                                  }
                              }
                          }
                      }
                      
                      if (context) {
                          // attribute
                          if (LANG.isString(context)) {
                              values[0] = {value: context};
                          }
                          // nth child
                          else if (isNth) {
                              values[0] = {value: context.innerHTML};
                          }
                          // all children
                          else {
                              values = Y.Array(context.childNodes, 0, true);
                          }
                      }
                  }
  
                  // returning a mock-standard object for IE
                  return {
                      index: 0,
                      
                      iterateNext: function() {
                          if (this.index >= this.values.length) {return undefined;}
                          var result = this.values[this.index];
                          this.index += 1;
                          return result;
                      },
  
                      values: values
                  };
              }
          },
  
          /**
           * Schema-parsed result field.
           *
           * @method _parseField
           * @param field {String | Object} Required. Field definition.
           * @param result {Object} Required. Schema parsed data object.
           * @param context {Object} Required. XML node or document to search within.
           * @static
           * @protected
           */
          _parseField: function(field, result, context) {
              if (field.schema) {
                  result[field.key] = SchemaXML._parseResults.call(this, field.schema, context, {results:[],meta:{}}).results;
              }
              else {
                  result[field.key || field] = SchemaXML._getLocationValue.call(this, field, context);
              }
          },
  
          /**
           * Parses results data according to schema
           *
           * @method _parseMeta
           * @param xmldoc_in {Object} XML document parse.
           * @param data_out {Object} In-progress schema-parsed data to update.
           * @return {Object} Schema-parsed data.
           * @static
           * @protected
           */
          _parseMeta: function(metaFields, xmldoc_in, data_out) {
              if(LANG.isObject(metaFields)) {
                  var key,
                      xmldoc = xmldoc_in.ownerDocument || xmldoc_in;
  
                  for(key in metaFields) {
                      if (metaFields.hasOwnProperty(key)) {
                          data_out.meta[key] = SchemaXML._getLocationValue.call(this, metaFields[key], xmldoc);
                      }
                  }
              }
              return data_out;
          },
  
          /**
           * Schema-parsed result to add to results list.
           *
           * @method _parseResult
           * @param fields {Array} Required. A collection of field definition.
           * @param context {Object} Required. XML node or document to search within.
           * @return {Object} Schema-parsed data.
           * @static
           * @protected
           */
          _parseResult: function(fields, context) {
              var result = {}, j;
  
              // Find each field value
              for (j=fields.length-1; 0 <= j; j--) {
                  SchemaXML._parseField.call(this, fields[j], result, context);
              }
  
              return result;
          },
  
          /**
           * Schema-parsed list of results from full data
           *
           * @method _parseResults
           * @param schema {Object} Schema to parse against.
           * @param context {Object} XML node or document to parse.
           * @param data_out {Object} In-progress schema-parsed data to update.
           * @return {Object} Schema-parsed data.
           * @static
           * @protected
           */
          _parseResults: function(schema, context, data_out) {
              if (schema.resultListLocator && LANG.isArray(schema.resultFields)) {
                  var xmldoc = context.ownerDocument || context,
                      fields = schema.resultFields,
                      results = [],
                      node, result, nodeList, i=0;
  
                  if (schema.resultListLocator.match(/^[:\-\w]+$/)) {
                      nodeList = context.getElementsByTagName(schema.resultListLocator);
                      
                      // loop through each result node
                      for (i=nodeList.length-1; 0 <= i; i--) {
                          results[i] = SchemaXML._parseResult.call(this, fields, nodeList[i]);
                      }
                  }
                  else {
                      nodeList = SchemaXML._getXPathResult(schema.resultListLocator, context, xmldoc);
  
                      // loop through the nodelist
                      while (node = nodeList.iterateNext()) {
                          results[i] = SchemaXML._parseResult.call(this, fields, node);
                          i += 1;
                      }
                  }
  
                  if (results.length) {
                      data_out.results = results;
                  }
                  else {
                      data_out.error = new Error("XML schema result nodes retrieval failure");
                  }
              }
              return data_out;
          }
      };
  
  Y.DataSchema.XML = Y.mix(SchemaXML, Y.DataSchema.Base);
  
  
  }, '@VERSION@' ,{requires:['dataschema-base']});
  YUI.add('dataschema-array', function(Y) {
  
  /**
   * Provides a DataSchema implementation which can be used to work with data stored in arrays.
   *
   * @module dataschema
   * @submodule dataschema-array
   */
  
  /**
   * Array subclass for the DataSchema Utility.
   * @class DataSchema.Array
   * @extends DataSchema.Base
   * @static
   */
  var LANG = Y.Lang,
  
      SchemaArray = {
  
          /////////////////////////////////////////////////////////////////////////////
          //
          // DataSchema.Array static methods
          //
          /////////////////////////////////////////////////////////////////////////////
          /**
           * Applies a given schema to given Array data.
           *
           * @method apply
           * @param schema {Object} Schema to apply.
           * @param data {Object} Array data.
           * @return {Object} Schema-parsed data.
           * @static
           */
          apply: function(schema, data) {
              var data_in = data,
                  data_out = {results:[],meta:{}};
  
              if(LANG.isArray(data_in)) {
                  if(schema && LANG.isArray(schema.resultFields)) {
                      // Parse results data
                      data_out = SchemaArray._parseResults.call(this, schema.resultFields, data_in, data_out);
                  }
                  else {
                      data_out.results = data_in;
                  }
              }
              else {
                  data_out.error = new Error("Array schema parse failure");
              }
  
              return data_out;
          },
  
          /**
           * Schema-parsed list of results from full data
           *
           * @method _parseResults
           * @param fields {Array} Schema to parse against.
           * @param array_in {Array} Array to parse.
           * @param data_out {Object} In-progress parsed data to update.
           * @return {Object} Parsed data object.
           * @static
           * @protected
           */
          _parseResults: function(fields, array_in, data_out) {
              var results = [],
                  result, item, type, field, key, value, i, j;
  
              for(i=array_in.length-1; i>-1; i--) {
                  result = {};
                  item = array_in[i];
                  type = (LANG.isObject(item) && !LANG.isFunction(item)) ? 2 : (LANG.isArray(item)) ? 1 : (LANG.isString(item)) ? 0 : -1;
                  if(type > 0) {
                      for(j=fields.length-1; j>-1; j--) {
                          field = fields[j];
                          key = (!LANG.isUndefined(field.key)) ? field.key : field;
                          value = (!LANG.isUndefined(item[key])) ? item[key] : item[j];
                          result[key] = Y.DataSchema.Base.parse.call(this, value, field);
                      }
                  }
                  else if(type === 0) {
                      result = item;
                  }
                  else {
                      //TODO: null or {}?
                      result = null;
                  }
                  results[i] = result;
              }
              data_out.results = results;
  
              return data_out;
          }
      };
  
  Y.DataSchema.Array = Y.mix(SchemaArray, Y.DataSchema.Base);
  
  
  }, '@VERSION@' ,{requires:['dataschema-base']});
  YUI.add('dataschema-text', function(Y) {
  
  /**
   * Provides a DataSchema implementation which can be used to work with delimited text data.
   *
   * @module dataschema
   * @submodule dataschema-text
   */
  
  /**
   * Text subclass for the DataSchema Utility.
   * @class DataSchema.Text
   * @extends DataSchema.Base
   * @static
   */
  
  var LANG = Y.Lang,
  
      SchemaText = {
  
          /////////////////////////////////////////////////////////////////////////////
          //
          // DataSchema.Text static methods
          //
          /////////////////////////////////////////////////////////////////////////////
          /**
           * Applies a given schema to given delimited text data.
           *
           * @method apply
           * @param schema {Object} Schema to apply.
           * @param data {Object} Text data.
           * @return {Object} Schema-parsed data.
           * @static
           */
          apply: function(schema, data) {
              var data_in = data,
                  data_out = {results:[],meta:{}};
  
              if(LANG.isString(data_in) && LANG.isString(schema.resultDelimiter)) {
                  // Parse results data
                  data_out = SchemaText._parseResults.call(this, schema, data_in, data_out);
              }
              else {
                  data_out.error = new Error("Text schema parse failure");
              }
  
              return data_out;
          },
  
          /**
           * Schema-parsed list of results from full data
           *
           * @method _parseResults
           * @param schema {Array} Schema to parse against.
           * @param text_in {String} Text to parse.
           * @param data_out {Object} In-progress parsed data to update.
           * @return {Object} Parsed data object.
           * @static
           * @protected
           */
          _parseResults: function(schema, text_in, data_out) {
              var resultDelim = schema.resultDelimiter,
                  results = [],
                  results_in, fields_in, result, item, fields, field, key, value, i, j,
  
              // Delete final delimiter at end of string if there
              tmpLength = text_in.length-resultDelim.length;
              if(text_in.substr(tmpLength) == resultDelim) {
                  text_in = text_in.substr(0, tmpLength);
              }
  
              // Split into results
              results_in = text_in.split(schema.resultDelimiter);
  
              for(i=results_in.length-1; i>-1; i--) {
                  result = {};
                  item = results_in[i];
  
                  if(LANG.isString(schema.fieldDelimiter)) {
                      fields_in = item.split(schema.fieldDelimiter);
  
                      if(LANG.isArray(schema.resultFields)) {
                          fields = schema.resultFields;
                          for(j=fields.length-1; j>-1; j--) {
                              field = fields[j];
                              key = (!LANG.isUndefined(field.key)) ? field.key : field;
                              value = (!LANG.isUndefined(fields_in[key])) ? fields_in[key] : fields_in[j];
                              result[key] = Y.DataSchema.Base.parse.call(this, value, field);
                          }
                      }
  
                  }
                  else {
                      result = item;
                  }
  
                  results[i] = result;
              }
              data_out.results = results;
  
              return data_out;
          }
      };
  
  Y.DataSchema.Text = Y.mix(SchemaText, Y.DataSchema.Base);
  
  
  }, '@VERSION@' ,{requires:['dataschema-base']});
  
  
  YUI.add('dataschema', function(Y){}, '@VERSION@' ,{use:['dataschema-base','dataschema-json','dataschema-xml','dataschema-array','dataschema-text']});
  
  