/**
+ * @author Ed Spencer
+ * @class Ext.data.reader.Array
+ * @extends Ext.data.reader.Json
+ *
+ * <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',
+
+ /**
+ * @private
+ * Most of the work is done for us by JsonReader, but we need to overwrite the field accessors to just
+ * reference the correct position in the array.
+ */
+ buildExtractors: function() {
+ this.callParent(arguments);
+
+ var fields = this.model.prototype.fields.items,
+ length = fields.length,
+ extractorFunctions = [],
+ i;
+
+ for (i = 0; i < length; i++) {
+ extractorFunctions.push(function(index) {
+ return function(data) {
+ return data[index];
+ };
+ }(fields[i].mapping || i));
+ }
+
+ this.extractorFunctions = extractorFunctions;
+ }
+});
+