DataLoader

Loads and processes data into a component..

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

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)

data	JavaScript array containing data for the component
dataFeed	alternative data source for filtered and bound data
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

data	inner DataStore
waitData	eventual result of an asynchronous operation ('promise' object) for the loaded data

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