DataLoader

Loads and processes data into a component..

Methods
add adds an item to the store
clearAll removes all items from the component
count returns the number of currently visible items
exists checks whether an item with the specified ID exists
filter filters the component
find returns all rows that match the criterion, or only the first one
getFirstId returns the ID of the first item
getIdByIndex returns the ID of the item with the specified index
getIndexById returns the index of the item with the specified ID
getItem gets the object of the data item with the specified ID
getLastId returns the ID of the last item
getNextId returns the ID of an item that is after the specified item, either directly after or after a number of items (defined by the step)
getPrevId returns the ID of an item that is before the specified item, either directly before or before a number of items (defined by the step)
load loads data from an external data source
loadNext sends a request to load the specified number of records to the end of the client-side dataset or to the specified position
parse loads data to the component from an inline data source
refresh repaints the whole view or a certain item
remove removes the specified item/items from datastore
serialize serializes data to an array of JSON objects
sort sorts datastore
sync allows syncing two copies of data (all or just a part of it) from one DataCollection to another
updateItem updates the data item with new properties
waitSave allows to catch the moment when a data operation was saved to the server
Events
onAfterAdd fires after adding an item to the datastore
onAfterDelete fires after an item is removed
onAfterLoad fires after data loading is complete
onAfterSort fires after sorting dataset
onBeforeAdd fires before adding an item to the datastore
onBeforeDelete fires before an item is removed
onBeforeLoad fires immediately before data loading has started
onBeforeSort fires before sorting of the dataset
onDataRequest fires when data from the server is requested for linear data structures (List, DataTable, DataView etc.) to implement dynamic data loading
onDataUpdate fires when a data item is being updated
onLoadError fires when an error occurs during data loading (invalid server side response)
Properties
data JavaScript array containing data for the component
dataFeed the URL that the component will use to reload data during binding
datathrottle sets the polling interval (the time period between the completion of a network request and the next request for data)
datatype the type of loaded data
ready the event handler is called just after the component has been completely initialized
removeMissed defines how to treat items in case of reloading
save defines URLs for data saving
scheme defines schemes for data processing
url the URL which the component will use to load data after its initialization
Other
data inner DataStore
waitData eventual result of an asynchronous operation ('promise' object) for the loaded data
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