85 lines
3.0 KiB
JavaScript
85 lines
3.0 KiB
JavaScript
|
/*
|
||
|
|
* Ext JS Library 2.3.0
|
||
|
|
* Copyright(c) 2006-2009, Ext JS, LLC.
|
||
|
|
* licensing@extjs.com
|
||
|
|
*
|
||
|
|
* http://extjs.com/license
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @class Ext.data.ArrayReader
|
||
|
|
* @extends Ext.data.JsonReader
|
||
|
|
* Data reader class to create an Array of {@link Ext.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 Employee = Ext.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 Ext.data.ArrayReader({
|
||
|
|
id: 0 // The subscript within row Array that provides an ID for the Record (optional)
|
||
|
|
}, Employee);
|
||
|
|
</code></pre>
|
||
|
|
* <p>
|
||
|
|
* This would consume an Array like this:
|
||
|
|
* <pre><code>
|
||
|
|
[ [1, 'Bill', 'Gardener'], [2, 'Ben', 'Horticulturalist'] ]
|
||
|
|
</code></pre>
|
||
|
|
* @cfg {String} id (optional) The subscript within row Array that provides an ID for the Record
|
||
|
|
* @constructor
|
||
|
|
* Create a new ArrayReader
|
||
|
|
* @param {Object} meta Metadata configuration options.
|
||
|
|
* @param {Object} recordType Either an Array of field definition objects
|
||
|
|
* as specified to {@link Ext.data.Record#create},
|
||
|
|
* or a {@link Ext.data.Record Record} constructor
|
||
|
|
* created using {@link Ext.data.Record#create}.
|
||
|
|
*/
|
||
|
|
Ext.data.ArrayReader = Ext.extend(Ext.data.JsonReader, {
|
||
|
|
/**
|
||
|
|
* @cfg {String} totalProperty
|
||
|
|
* @hide
|
||
|
|
*/
|
||
|
|
/**
|
||
|
|
* @cfg {String} successProperty
|
||
|
|
* @hide
|
||
|
|
*/
|
||
|
|
/**
|
||
|
|
* @cfg {String} root
|
||
|
|
* @hide
|
||
|
|
*/
|
||
|
|
/**
|
||
|
|
* Create a data block containing Ext.data.Records from an Array.
|
||
|
|
* @param {Object} o An Array of row objects which represents the dataset.
|
||
|
|
* @return {Object} data A data block which is used by an Ext.data.Store object as
|
||
|
|
* a cache of Ext.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, n);
|
||
|
|
values[f.name] = v;
|
||
|
|
}
|
||
|
|
var record = new recordType(values, id);
|
||
|
|
record.json = n;
|
||
|
|
records[records.length] = record;
|
||
|
|
}
|
||
|
|
return {
|
||
|
|
records : records,
|
||
|
|
totalRecords : records.length
|
||
|
|
};
|
||
|
|
}
|
||
|
|
});
|