Ext.data.ArrayReader (doc) - Data reader class to create an Array of Ext.data.Record objects from an Array.
Ext.data.JsonReader (doc) - Data reader class to create an Array of Ext.data.Record objects from a JSON response based on mappings in a provided Ext.data.Record constructor.
Ext.data.XmlReader (doc) - Data reader class to create an Array of Ext.data.Record objects from an XML document based on mappings in a provided Ext.data.Record constructor.