class
ReadOnlyRootCollection

Source: read-only-root-collection.js:69

Represents the definition of an asynchronous read-only root collection.

Properties

$modelName
count
totalItems

Methods

fetch([filter][, method][, eventHandlers], callback)
at(index)
checkRules()
every(callback)
fetch([filter][, method], callback)
filter(callback)
forEach(callback)
getBrokenRules([namespace])
getResponse([message][, namespace])
isValid()
map(callback)
some(callback)
sort([fnCompare])
toCto()

Events

postFetch
preFetch

new ReadOnlyRootCollection([eventHandlers])

Creates a new asynchronous read-only root collection instance.

The name of the model type available as: <instance>.constructor.modelType, returns 'ReadOnlyRootCollection'.

Parameter

Name Type Optional Description

eventHandlers

bo.shared.EventHandlerList

Yes

The event handlers of the instance.
Extends
CollectionBase
Fires
ReadOnlyRootCollection#event:preFetch
ReadOnlyRootCollection#event:postFetch
Throws

Argument error: The event handlers must be an EventHandlerList object or null.

Properties

read-only
$modelName  string

The name of the model.

read-only
count  number

The count of the child objects in the collection.

read-only
totalItems  number

The count of all available items if provided by the data access object.

Methods

static
fetch([filter][, method][, eventHandlers], callback)

Retrieves a read-only business object collection from the repository.

Parameters

Name Type Optional Description

filter

any type

Yes

The filter criteria.

method

string

Yes

An alternative fetch method of the data access object.

eventHandlers

bo.shared.EventHandlerList

Yes

The event handlers of the instance.

callback

external.cbDataPortal

 

Returns the required read-only collection.
Throws

Argument error: The method must be a string or null.

Argument error: The event handlers must be an EventHandlerList object or null.

Argument error: The callback must be a function.

Authorization error: The user has no permission to execute the action.

Data portal error: Fetching the business object collection has failed.

at(index) → ReadOnlyChildModel

Gets a collection item at a specific position.

Parameter

Name Type Optional Description

index

number

 

The index of the required item in the collection.
Returns

ReadOnlyChildModel The required collection item.

checkRules()

Executes all the validation rules of all business objects in the collection, including the ones of their child objects.

By default read-only business object collections are supposed to be valid.

every(callback) → boolean

Tests whether all items in the collection pass the test implemented by the provided function.

Parameter

Name Type Optional Description

callback

external.cbCollectionItem

 

Function to test for each collection item.
Returns

boolean True when callback returns truthy value for each item, otherwise false.

protected
fetch([filter][, method], callback)

Initializes a business object collection to be retrieved from the repository.
This method is called by a factory method with the same name.

Parameters

Name Type Optional Description

filter

any type

Yes

The filter criteria.

method

string

Yes

An alternative fetch method of the data access object.

callback

external.cbDataPortal

 

Returns the required read-only collection.
Throws

Argument error: The method must be a string or null.

Argument error: The callback must be a function.

Authorization error: The user has no permission to execute the action.

Data portal error: Fetching the business object has failed.

filter(callback) → Array of ReadOnlyChildModel

Creates a new array with all collection items that pass the test implemented by the provided function.

Parameter

Name Type Optional Description

callback

external.cbCollectionItem

 

Function to test for each collection item.
Returns

Array of ReadOnlyChildModel The new array of collection items.

forEach(callback)

Executes a provided function once per collection item.

Parameter

Name Type Optional Description

callback

external.cbCollectionItem

 

Function that produces an item of the new collection.

getBrokenRules([namespace]) → bo.rules.BrokenRulesOutput

Gets the broken rules of the business object collection.

By default read-only business object collections are supposed to be valid.

Parameter

Name Type Optional Description

namespace

string

Yes

The namespace of the message keys when messages are localizable.
Returns

bo.rules.BrokenRulesOutput The broken rules of the business object collection.

getResponse([message][, namespace]) → bo.rules.BrokenRulesResponse

Gets the response to send to the client in case of broken rules.

By default read-only business object collections are supposed to be valid.

Parameters

Name Type Optional Description

message

string

Yes

Human-readable description of the reason of the failure.

namespace

string

Yes

The namespace of the message keys when messages are localizable.
Returns

bo.rules.BrokenRulesResponse The broken rules response to send to the client.

isValid() → boolean

Indicates whether all the validation rules of the business objects in the collection, including the ones of their child objects, succeeds. A valid collection may have broken rules with severity of success, information and warning.

By default read-only business object collections are supposed to be valid.

Returns

boolean True when the business object is valid, otherwise false.

map(callback) → Array of any type

Creates a new array with the results of calling a provided function on every item in this collection.

Parameter

Name Type Optional Description

callback

external.cbCollectionItem

 

Function to test for each collection item.
Returns

Array of any type The new array of callback results.

some(callback) → boolean

Tests whether some item in the collection pass the test implemented by the provided function.

Parameter

Name Type Optional Description

callback

external.cbCollectionItem

 

Function to test for each collection item.
Returns

boolean True when callback returns truthy value for some item, otherwise false.

sort([fnCompare]) → ReadOnlyRootCollection

Sorts the items of the collection in place and returns the collection.

Parameter

Name Type Optional Description

fnCompare

external.cbCompare

Yes

Function that defines the sort order. If omitted, the collection is sorted according to each character's Unicode code point value, according to the string conversion of each item.
Returns

ReadOnlyRootCollection The sorted collection.

toCto() → Array of object

Transforms the business object collection to a plain object array to send to the client.

Returns

Array of object The client transfer object.

Events

postFetch

The event arises after the collection instance has been retrieved from the repository.

Parameters

Name Type Optional Description

eventArgs

bo.shared.DataPortalEventArgs

 

Data portal event arguments.

newObject

ReadOnlyRootCollection

 

The collection instance after the data portal action.

preFetch

The event arises before the collection instance will be retrieved from the repository.

Parameters

Name Type Optional Description

eventArgs

bo.shared.DataPortalEventArgs

 

Data portal event arguments.

oldObject

ReadOnlyRootCollection

 

The collection instance before the data portal action.