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<pre class="prettyprint lang-js"><span id='Ext-data-reader-Array-method-constructor'><span id='Ext-data-reader-Array'>/**
</span></span> * @author Ed Spencer
* @class Ext.data.reader.Array
*
* <p>Data reader class to create an Array of {@link Ext.data.Model} 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 <code>mapping</code> property
* of the field definition if it exists, or the field's ordinal position in the definition.</p>
*
* <p><u>Example code:</u></p>
*
<pre><code>
Employee = Ext.define('Employee', {
extend: 'Ext.data.Model',
fields: [
'id',
{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.reader.Array({
model: 'Employee'
}, Employee);
</code></pre>
*
* <p>This would consume an Array like this:</p>
*
<pre><code>
[ [1, 'Bill', 'Gardener'], [2, 'Ben', 'Horticulturalist'] ]
</code></pre>
*
* @constructor
* Create a new ArrayReader
* @param {Object} meta Metadata configuration options.
*/
Ext.define('Ext.data.reader.Array', {
extend: 'Ext.data.reader.Json',
alternateClassName: 'Ext.data.ArrayReader',
alias : 'reader.array',
// For Array Reader, methods in the base which use these properties must not see the defaults
totalProperty: undefined,
successProperty: undefined,
<span id='Ext-data-reader-Array-method-createFieldAccessExpression'> /**
</span> * @private
* Returns an accessor expression for the passed Field from an Array using either the Field's mapping, or
* its ordinal position in the fields collsction as the index.
* This is used by buildExtractors to create optimized on extractor function which converts raw data into model instances.
*/
createFieldAccessExpression: function(field, fieldVarName, dataName) {
// In the absence of a mapping property, use the original ordinal position
// at which the Model inserted the field into its collection.
var index = (field.mapping == null) ? field.originalIndex : field.mapping,
result;
if (typeof index === 'function') {
result = fieldVarName + '.mapping(' + dataName + ', this)';
} else {
if (isNaN(index)) {
index = '"' + index + '"';
}
result = dataName + "[" + index + "]";
}
return result;
}
});
</pre>
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