/*
* Based on:
* Ext JS Library 1.1.1
* Copyright(c) 2006-2007, Ext JS, LLC.
*
* Originally Released Under LGPL - original licence link has changed is not relivant.
*
* Fork - LGPL
* <script type="text/javascript">
*/
/**
* @class Roo.data.ArrayReader
* @extends Roo.data.DataReader
* Data reader class to create an Array of Roo.data.Record objects from an Array.
* Each element of that Array represents a row of data fields. The
* fields are pulled into a Record object using as a subscript, the <em>mapping</em> property
* of the field definition if it exists, or the field's ordinal position in the definition.<br>
* <p>
* Example code:.
* <pre><code>
var RecordDef = Roo.data.Record.create([
{name: 'name', mapping: 1}, // "mapping" only needed if an "id" field is present which
{name: 'occupation', mapping: 2} // precludes using the ordinal position as the index.
]);
var myReader = new Roo.data.ArrayReader({
id: 0 // The subscript within row Array that provides an ID for the Record (optional)
}, RecordDef);
</code></pre>
* <p>
* This would consume an Array like this:
* <pre><code>
[ [1, 'Bill', 'Gardener'], [2, 'Ben', 'Horticulturalist'] ]
</code></pre>
* @constructor
* Create a new JsonReader
* @param {Object} meta Metadata configuration options.
* @param {Object|Array} recordType Either an Array of field definition objects
*
* @cfg {Array} fields Array of field definition objects
* @cfg {String} id Name of the property within a row object that contains a record identifier value.
* as specified to {@link Roo.data.Record#create},
* or an {@link Roo.data.Record} object
*
*
* created using {@link Roo.data.Record#create}.
*/
Roo.data.ArrayReader = function(meta, recordType){
Roo.data.ArrayReader.superclass.constructor.call(this, meta, recordType||meta.fields);
};
Roo.extend(Roo.data.ArrayReader, Roo.data.JsonReader, {
/**
* Create a data block containing Roo.data.Records from an XML document.
* @param {Object} o An Array of row objects which represents the dataset.
* @return {Object} A data block which is used by an {@link Roo.data.Store} object as
* a cache of Roo.data.Records.
*/
readRecords : function(o){
var sid = this.meta ? this.meta.id : null;
var recordType = this.recordType, fields = recordType.prototype.fields;
var records = [];
var root = o;
for(var i = 0; i < root.length; i++){
var n = root[i];
var values = {};
var id = ((sid || sid === 0) && n[sid] !== undefined && n[sid] !== "" ? n[sid] : null);
for(var j = 0, jlen = fields.length; j < jlen; j++){
var f = fields.items[j];
var k = f.mapping !== undefined && f.mapping !== null ? f.mapping : j;
var v = n[k] !== undefined ? n[k] : f.defaultValue;
v = f.convert(v);
values[f.name] = v;
}
var record = new recordType(values, id);
record.json = n;
records[records.length] = record;
}
return {
records : records,
totalRecords : records.length
};
}
});