[4.1b1]Ext.override doesn't work correctly

[kof720551]

I refer to Ext.data.AbstractStore constructor,and override add a line test code "alert('123');".
This worked correctly in version 4.0.2a，but can't worked in 4.0.7/4.1pr/4.1b1.

  Ext.onReady(function () {
    Ext.override(Ext.data.AbstractStore, {
        constructor: function (config) {
            //test code
            alert('123');
            
            var me = this,
                  filters;
            
            Ext.apply(me, config);
            me.removed = [];
            me.mixins.observable.constructor.apply(me, arguments);
            me.model = Ext.ModelManager.getModel(me.model);
            Ext.applyIf(me, {
                modelDefaults: {}
            });
            if (!me.model && me.fields) {
                me.model = Ext.define('Ext.data.Store.ImplicitModel-' + (me.storeId || Ext.id()), {
                    extend: 'Ext.data.Model',
                    fields: me.fields,
                    proxy: me.proxy || me.defaultProxyType
                });
                delete me.fields;
                me.implicitModel = true;
            }
            if (!me.model && me.useModelWarning !== false) {
                if (Ext.isDefined(Ext.global.console)) {
                    Ext.global.console.warn('Store defined with no model. You may have mistyped the model name.');
                }
            }
            me.setProxy(me.proxy || me.model.getProxy());
            me.proxy.on('metachange', me.onMetaChange, me);
            if (me.id && !me.storeId) {
                me.storeId = me.id;
                delete me.id;
            }
            if (me.storeId) {
                Ext.data.StoreManager.register(me); 
           }
            me.mixins.sortable.initSortable.call(me);
            filters = me.decodeFilters(me.filters);
            me.filters = new Ext.util.MixedCollection();
            me.filters.addAll(filters);
        }
    });
    Ext.define('Sharing.store.CamStore', {
        extend: 'Ext.data.Store',
        model: 'Sharing.model.CamModel',
        data: [
            { "CamID": "1", "CamValue": "1" },
            { "CamID": "2", "CamValue": "2" },
            { "CamID": "3", "CamValue": "3" },
            { "CamID": "4", "CamValue": "4" },
            { "CamID": "5", "CamValue": "5" },
            { "CamID": "6", "CamValue": "6" },
            { "CamID": "All", "CamValue": "0" }
        ]
    });

    Ext.create('Sharing.store.CamStore');}); 

[mitchellsimoens]

You should use Ext.define for overrides:

Ext.define('Override.data.AbstractStore', {
    override : 'Ext.data.AbstractStore',

    constructor : function(config) {...}
});

This allows to load the file dynamically if you setup a path for the Override namespace. You can call the parent code via this.callOverridden(arguments);