API Docs for: 3.8.0
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File: dataschema/js/dataschema-base.js

  1. /**
  2.  * The DataSchema utility provides a common configurable interface for widgets to
  3.  * apply a given schema to a variety of data.
  4.  *
  5.  * @module dataschema
  6.  * @main dataschema
  7.  */

  9. /**
  10.  * Provides the base DataSchema implementation, which can be extended to 
  11.  * create DataSchemas for specific data formats, such XML, JSON, text and
  12.  * arrays.
  13.  *
  14.  * @module dataschema
  15.  * @submodule dataschema-base
  16.  */

  18. var LANG = Y.Lang,
  19. /**
  20.  * Base class for the YUI DataSchema Utility.
  21.  * @class DataSchema.Base
  22.  * @static
  23.  */
  24.     SchemaBase = {
  25.     /**
  26.      * Overridable method returns data as-is.
  27.      *
  28.      * @method apply
  29.      * @param schema {Object} Schema to apply.
  30.      * @param data {Object} Data.
  31.      * @return {Object} Schema-parsed data.
  32.      * @static
  33.      */
  34.     apply: function(schema, data) {
  35.         return data;
  36.     },
  37.     
  38.     /**
  39.      * Applies field parser, if defined
  40.      *
  41.      * @method parse
  42.      * @param value {Object} Original value.
  43.      * @param field {Object} Field.
  44.      * @return {Object} Type-converted value.
  45.      */
  46.     parse: function(value, field) {
  47.         if(field.parser) {
  48.             var parser = (LANG.isFunction(field.parser)) ?
  49.             field.parser : Y.Parsers[field.parser+''];
  50.             if(parser) {
  51.                 value = parser.call(this, value);
  52.             }
  53.             else {
  54.                 Y.log("Could not find parser for field " + Y.dump(field), "warn", "dataschema-json");
  55.             }
  56.         }
  57.         return value;
  58.     }
  59. };

  61. Y.namespace("DataSchema").Base = SchemaBase;
  62. Y.namespace("Parsers");

  64.