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annotate core/src/js/data/MapSchema.js @ 31:40d2e49a7219

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working on dependencies
author cin
date Wed, 27 Jun 2018 04:31:39 +0300
parents acdcdf1a8d21
children
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1 define([ "dojo/_base/declare", "../safe" ], function(declare, safe) {
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2 return declare(null, {
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3 /**
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4 * Отображение одного типа объектов в другой.
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5 *
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6 * @remarks Отображения являются односторонними, т.е. позволяют
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7 * перенести часть содержимого одного объекта в другой. Каждая
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8 * схема отображения строится из набора примитивных
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9 * отображений, которые будут применены в произвольном порядке.
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10 */
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11 _schema : null,
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12
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13 constructor : function(schema) {
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14 this._schema = schema;
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15 },
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16
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17 /**
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18 * Осуществляет отображение одного объекта в другой
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19 *
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20 * @src{Object} Исходный объект из которого будут взяты данные
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21 * @dst{Object}
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22 */
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23 map : function(src, dst, ctx) {
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24 safe.argumentNotNull(src, "src");
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25 safe.argumentNotNull(dst, "dst");
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26
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27 for ( var p in this._schema) {
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28 var mapper = this._schema[p];
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29 if (mapper instanceof Function) {
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30 dst[p] = mapper(src[p]);
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31 } else if (mapper && mapper.map) {
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32 mapper.map(src, dst, p, ctx);
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33 } else {
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34 this._defaultMapper(src, dst, p, mapper, ctx);
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35 }
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36 }
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37 },
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38
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39 _defaultMapper : function(src, dst, prop, opts) {
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40 if (typeof (opts) == "string") {
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41 if (opts in src)
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42 dst[prop] = src[opts];
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43 } else if (opts && opts.type instanceof Function) {
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44 if (src[prop] instanceof opts.type)
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45 dst[prop] = src[prop];
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46 else
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47 dst[prop] = this._isPrimitiveType(opts.type) ? opts.type
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48 .call(null, src[prop]) : new opts.type(src[prop]);
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49
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50 } else {
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51 if (!(prop in src))
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52 if (opts && opts.required)
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53 throw new Error("The " + prop + "is missing");
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54 else
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55 return;
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56 dst[prop] = src[prop];
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57 }
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58 },
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59
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60 _isPrimitiveType : function(type) {
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61 return (type === String || type === Number || type === Boolean
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62 || type === Number || type === Date);
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63 }
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64
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65 });
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66
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67 });