/*!
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* Ext JS Library 3.1.0
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* Copyright(c) 2006-2009 Ext JS, LLC
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* licensing@extjs.com
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* http://www.extjs.com/license
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*/
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/**
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* @class Ext.data.ArrayReader
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* @extends Ext.data.JsonReader
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* <p>Data reader class to create an Array of {@link Ext.data.Record} objects from an Array.
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* Each element of that Array represents a row of data fields. The
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* fields are pulled into a Record object using as a subscript, the <code>mapping</code> property
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* of the field definition if it exists, or the field's ordinal position in the definition.</p>
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* <p>Example code:</p>
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* <pre><code>
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var Employee = Ext.data.Record.create([
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{name: 'name', mapping: 1}, // "mapping" only needed if an "id" field is present which
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{name: 'occupation', mapping: 2} // precludes using the ordinal position as the index.
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]);
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var myReader = new Ext.data.ArrayReader({
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{@link #idIndex}: 0
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}, Employee);
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</code></pre>
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* <p>This would consume an Array like this:</p>
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* <pre><code>
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[ [1, 'Bill', 'Gardener'], [2, 'Ben', 'Horticulturalist'] ]
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* </code></pre>
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* @constructor
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* Create a new ArrayReader
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* @param {Object} meta Metadata configuration options.
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* @param {Array/Object} recordType
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* <p>Either an Array of {@link Ext.data.Field Field} definition objects (which
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* will be passed to {@link Ext.data.Record#create}, or a {@link Ext.data.Record Record}
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* constructor created from {@link Ext.data.Record#create}.</p>
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*/
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Ext.data.ArrayReader = Ext.extend(Ext.data.JsonReader, {
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/**
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* @cfg {String} successProperty
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* @hide
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*/
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/**
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* @cfg {Number} id (optional) The subscript within row Array that provides an ID for the Record.
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* Deprecated. Use {@link #idIndex} instead.
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*/
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/**
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* @cfg {Number} idIndex (optional) The subscript within row Array that provides an ID for the Record.
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*/
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/**
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* Create a data block containing Ext.data.Records from an Array.
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* @param {Object} o An Array of row objects which represents the dataset.
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* @return {Object} data A data block which is used by an Ext.data.Store object as
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* a cache of Ext.data.Records.
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*/
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readRecords : function(o){
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this.arrayData = o;
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var s = this.meta,
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sid = s ? Ext.num(s.idIndex, s.id) : null,
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recordType = this.recordType,
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fields = recordType.prototype.fields,
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records = [],
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v;
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var root = this.getRoot(o);
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for(var i = 0, len = root.length; i < len; i++) {
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var n = root[i],
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values = {},
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id = ((sid || sid === 0) && n[sid] !== undefined && n[sid] !== "" ? n[sid] : null);
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for(var j = 0, jlen = fields.length; j < jlen; j++) {
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var f = fields.items[j],
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k = f.mapping !== undefined && f.mapping !== null ? f.mapping : j;
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v = n[k] !== undefined ? n[k] : f.defaultValue;
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v = f.convert(v, n);
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values[f.name] = v;
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}
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var record = new recordType(values, id);
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record.json = n;
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records[records.length] = record;
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}
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var totalRecords = records.length;
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if(s.totalProperty) {
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v = parseInt(this.getTotal(o), 10);
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if(!isNaN(v)) {
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totalRecords = v;
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}
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}
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return {
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records : records,
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totalRecords : totalRecords
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};
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}
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});
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