/**
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@name Edo.data.Convertor
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@private
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@class
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@typeName Convertor
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@description 数据转换器
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@extend Edo.core.Component
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@example
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*/
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Edo.data.Convertor = function(){
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Edo.data.Convertor.superclass.constructor.call(this);
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this.fields = [];
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}
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Edo.data.Convertor.extend(Edo.core.Component, {
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/*
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name: 'a',
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mapping: 'BS',
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convert: function(v){return ...},
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type: 'string',
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dateFormat
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*/
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_setFields: function(fields){
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if(!fields) fields = [];
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for(var i=0,l=fields.length; i<l; i++){
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var f = fields[i];
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if(typeof f == 'string'){
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fields[i] = {name: f};
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}
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if(typeof f.mapping == 'undefined'){
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f.mapping = f.name;
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}
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if(!f.convert && f.type){
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f.convert = Edo.data.Convertor[f.type];
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}
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}
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this.fields = fields;
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},
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convert: function(data){
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if(!data) data = [];
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if(!(data instanceof Array)) data = [data];
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for(var i=0, l=data.length; i<l; i++){
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var o = data[i];
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this.convertObject(o);
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}
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return data;
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},
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convertObject: function(o){
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var fields = this.fields;
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var getMapping = this.getMappingValue;
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for(var i=0,l=fields.length; i<l; i++){
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var f = fields[i];
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var mapping = f.mapping;
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var v = mapping.indexOf('.') == -1 ? o[mapping] : getMapping(o, mapping);
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o[f.name] = f.convert ? f.convert(v, o, f) : v;
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}
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return o;
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},
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getMappingValue: function(o, mapping){
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var maps = mapping.split('.');
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var v = o;
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for(var i=0,l=maps.length; i<l; i++){
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v = v[maps[i]];
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}
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return v;
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}
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});
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Edo.data.Convertor.regType('convertor');
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//converts
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Edo.apply(Edo.data.Convertor, {
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stripRe: /[\$,%]/g,
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'string': function(v, o, f){
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return (v === undefined || v === null) ? '' : String(v);
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},
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'int': function(v, o, f){
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return v !== undefined && v !== null && v !== '' ?
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parseInt(String(v).replace(this.stripRe, ""), 10) : 0;
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},
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'float': function(v, o, f){
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return v !== undefined && v !== null && v !== '' ?
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parseFloat(String(v).replace(stripRe, ""), 10) : '';
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},
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'bool': function(v, o, f){
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return v === true || v === "true" || v == 1;
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},
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'date': function(v, o, f){
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if(!v){
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return '';
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}
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if(Edo.isDate(v)){
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return v;
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}
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var dateFormat = f.dateFormat;
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if(dateFormat){
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if(dateFormat == "timestamp"){
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return new Date(v*1000);
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}
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if(dateFormat == "time"){
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return new Date(parseInt(v, 10));
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}
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return Date.parseDate(v, dateFormat);
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}
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var parsed = Date.parse(v);
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return parsed ? new Date(parsed) : null;
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},
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'array': function(v, o, f){
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if(!v && (v !== 0 || v !== false)) return [];
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return toString.apply(v) === '[object Array]' ? v : [v];
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}
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});
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