DataSource

Interface

The interface for all data sources.

Conceptually, we have four types of data sources but all of them are created as data source object:

Main data source: the data source user added in data panel.
Data view: the data view user created in data panel.
Local data source: when multiple widgets connect to a main data source or a data view, they'll share the same data records. If you need to use a local data copy, you can create a local data source from a main data source by using DataSourceManager.getInstance().createLocalDataSource() .
Local data view: a local data source created from a data view.

Data view, local data source or local data view derived from the same main data source will share the same schema, same selection records, but may have different data records. The schema is in main data source only.

To share the selection between data source and view, we create a selection data view when creating the data source. The selection data source view ID is: ${dataSourceId}-selection . When selecting records, the selected records are copied to the selection data view.

Subclasses: QueriableDataSource, AbstractArcGISLayerFolderDataSource

Properties

Property	Type	Notes
`addSourceVersion`	`() => void`	When current data source is created from an array of records, it will be saved in `sourceRecords` . Add the version of `sourceRecords` .`setSourceRecords` will add the version by default.
`addVersion`	`() => void`	Update data source version.
`belongToDataSource`	`DataSource`	The data source which this data source derives from.
`buildRecord`	`(data: any) => DataRecord`	Builds a data record only -- does not add the record into data source.
`clearRecords`	`() => void`	This function will clear the loaded records and won't clear the sourceRecords. Once the loaded records are cleared, the version in the data source info will be updated.
`clearSourceRecords`	`() => void`	Clear both sourceRecords and loaded records. Both source version and version in data source info will be updated.
`count`	`number`	The total records count depends on the current query
`dataSourceManager`	`DataSourceManager`	The data source manager, which is used to manage the data source, including create/get/destroy the data source instance.
`dataViewId`	`string`	The data view ID configured in JSON.
`destroy`	`() => void`	Destroy the data source.
`fetchSchema`	`() => Promise<IMDataSourceSchema>`	Fetch the data schema from an actual data source. If it's a statistic data source, the schema will not be fetched.
`getAllDerivedDataSources`	`() => DataSource[]`	Return the derived data views and local data sources.
`getCountStatus`	`() => DataSourceStatus`	Return data source count status.
`getDataSourceJson`	`() => IMDataSourceJson`	The data source JSON object in app config.
`getDataView`	`(dataViewId: string) => DataSource`	Get data view by data view ID.
`getDataViewConfig`	`() => IMDataViewJson`	Return the config of the current data source.
`getDataViews`	`() => DataSource[]`	Return all data views created from a main data source.
`getIdField`	`() => string`	Return the data source ID field.
`getInfo`	`() => IMDataSourceInfo`	Return the data source info in redux store.
`getLabel`	`() => string`	Return data source label.
`getListenSelection`	`() => boolean`	Return whether listen selection.
`getLocalDataSource`	`(localId: string) => DataSource`	Get local data source by local ID.
`getLocalDataSources`	`() => DataSource[]`	Return all local data sources created from a main data source or data view.
`getMainDataSource`	`() => DataSource`	Return the main data source.
`getRecord`	`(index: number) => DataRecord`	Get record by index
`getRecordById`	`(id: string) => DataRecord`	Get record by ID
`getRecords`	`() => DataRecord[]`	Get records
`getRecordsWithSelection`	`() => DataRecord[]`	If selected records are not loaded in the current data source, they will be concatenated to the end of records array. For example, record 1 is selected in data view 1 and it is not loaded in data view 2 (record 1 actually matches query params of data view 2), dataView2.getRecordsWithSelection() will return all loaded records in data view 2 and record 1.
`getRootDataSource`	`() => DataSource`	Return the root data source.
`getSchema`	`() => IMDataSourceSchema`	The schema returned here is the merged result of the configured schema and the fetched schema. The configured schema is the user's changes, such as a new data source name. The fetched schema is the original schema from AGOL/portal item or a remote database, such as the service name, the fields and the filters.
`getSelectedRecordIds`	`() => string[]`	Get selected record IDs
`getSelectedRecordIndexes`	`() => number[]`	Get selected record indexes
`getSelectedRecords`	`() => DataRecord[]`	Get selected records
`getSelectionDataView`	`() => DataSource`	Get selection data view
`getSourceRecords`	`() => DataRecord[]`	Return the source records
`getSourceVersion`	`() => number`	When current data source is created from an array of records, it will be saved in `sourceRecords` . Return the version of `sourceRecords` .
`getStatus`	`() => DataSourceStatus`	Return data source status.
`getVersion`	`() => number`	Return data source version.
`id`	`string`	The data source ID.
`isDataSourceSet`	`() => thisisDataSource & SetDataSourceMixin`	Whether a data source contains child data sources. A set data source won't create all its child data sources when `ready` is resolved. To make sure all child data sources are created, please use `childDataSourcesReady` .
`isDataView`	`boolean`	True means the data source is a data view. For local data source, this is false even the local data source is created from a data view.
`isInAppConfig`	`() => boolean`	Return whether the data source is added in builder and is saved in app config.
`isLocal`	`boolean`	True means the data source is a local data source.
`localId`	`string`	The local ID of the data source.
`order`	`number`	Order in the parent data source.
`parentDataSource`	`DataSource & SetDataSourceMixin`	The parent data source of this data source, mull means it's a root data source.
`ready`	`() => Promise<any>`	Ready is resolved means the data source instance is ready for use. Please note that can not make sure all child data sources are created if a set data source is ready. To make sure all child data sources are created, please use `childDataSourcesReady` .
`selectRecordById`	`(id: string, record?: DataRecord) => void`	Select a record by ID. When select record by ID, we can pass in the record. So when the selected record is not loaded, we can add it in.
`selectRecords`	`(options: SelectOptions) => Promise<Pick<QueryResult, "records">>`	Select records.
`selectRecordsByIds`	`(ids: string[], records?: DataRecord[]) => void`	Select records by IDs. When select records by IDs, we can pass in the records. So when the selected records are not loaded, we can add them in.
`setCountStatus`	`(status: DataSourceStatus) => void`	Update data source count status.
`setDataSourceJson`	`(dsJson: IMDataSourceJson) => void`	Update data source JSON in data source instance
`setListenSelection`	`(listen: boolean) => void`	Whether listen selected records from other data sources which are derived from the same main data source. If true, will update selected record IDs of current data source info when selecting records via other derived data sources. Will also update selected record IDs when selecting records via current data source itself. If false, won't change selected record IDs when selecting records via other derived data sources. Will update selected record IDs only when selecting records via current data source itself.
`setRecords`	`(records: DataRecord[]) => void`	Update the records in the data source object only, does not update the source data.
`setSourceRecords`	`(records: DataRecord[]) => void`	When current data source is created from an array of records, will save it in `sourceRecords` . These two methods are used to update or get the source data.
`setStatus`	`(status: DataSourceStatus) => void`	Update data source status.
`type`	`string`	The type of the data source.
`updateSelectionInfo`	`(options: SelectOptions, triggerDataSource: DataSource, forceCheck?: boolean) => void`	Update selected records in data source info if the current data source listens selection change (see `setListenSelection` ) or the current data source is the trigger data source (that is to say, select via it).

addSourceVersion

Interface Property

addSourceVersion: () => void

When current data source is created from an array of records, it will be saved in sourceRecords . Add the version of sourceRecords .setSourceRecords will add the version by default.

Type declaration

function(): void

Returns

void

addVersion

optional

Interface Property

addVersion: () => void

Update data source version.

Type declaration

function(): void

Returns

void

belongToDataSource

optional

Interface Property

belongToDataSource: DataSource

The data source which this data source derives from.

buildRecord

Interface Property

buildRecord: (data: any) => DataRecord

Builds a data record only -- does not add the record into data source.

Type declaration

function(data: any): DataRecord

Parameters

Parameter	Type
`data`	any

Returns

DataRecord

clearRecords

optional

Interface Property

clearRecords: () => void

This function will clear the loaded records and won't clear the sourceRecords. Once the loaded records are cleared, the version in the data source info will be updated.

Type declaration

function(): void

Returns

void

clearSourceRecords

Interface Property

clearSourceRecords: () => void

Clear both sourceRecords and loaded records. Both source version and version in data source info will be updated.

Type declaration

function(): void

Returns

void

count

optional

Interface Property

count: number

The total records count depends on the current query

dataSourceManager

Interface Property

dataSourceManager: DataSourceManager

The data source manager, which is used to manage the data source, including create/get/destroy the data source instance.

dataViewId

optional

Interface Property

dataViewId: string

The data view ID configured in JSON.

destroy

Interface Property

destroy: () => void

Destroy the data source.

Type declaration

function(): void

Returns

void

fetchSchema

Interface Property

fetchSchema: () => Promise<IMDataSourceSchema>

Fetch the data schema from an actual data source. If it's a statistic data source, the schema will not be fetched.

Type declaration

function(): Promise<IMDataSourceSchema>

Returns

Promise<IMDataSourceSchema>

getAllDerivedDataSources

Interface Property

getAllDerivedDataSources: () => DataSource[]

Return the derived data views and local data sources.

Type declaration

function(): DataSource[]

Returns

DataSource[]

getCountStatus

Interface Property

getCountStatus: () => DataSourceStatus

Return data source count status.

Type declaration

function(): DataSourceStatus

Returns

DataSourceStatus

getDataSourceJson

Interface Property

getDataSourceJson: () => IMDataSourceJson

The data source JSON object in app config.

Type declaration

function(): IMDataSourceJson

Returns

IMDataSourceJson

getDataView

Interface Property

getDataView: (dataViewId: string) => DataSource

Get data view by data view ID.

Type declaration

function(dataViewId: string): DataSource

Parameters

Parameter	Type
`dataViewId`	string

Returns

DataSource

getDataViewConfig

Interface Property

getDataViewConfig: () => IMDataViewJson

Return the config of the current data source.

Type declaration

function(): IMDataViewJson

Returns

IMDataViewJson

getDataViews

Interface Property

getDataViews: () => DataSource[]

Return all data views created from a main data source.

Type declaration

function(): DataSource[]

Returns

DataSource[]

getIdField

Interface Property

getIdField: () => string

Return the data source ID field.

Type declaration

function(): string

Returns

string

getInfo

Interface Property

getInfo: () => IMDataSourceInfo

Return the data source info in redux store.

Type declaration

function(): IMDataSourceInfo

Returns

IMDataSourceInfo

getLabel

Interface Property

getLabel: () => string

Return data source label.

Type declaration

function(): string

Returns

string

getListenSelection

Interface Property

getListenSelection: () => boolean

Return whether listen selection.

Type declaration

function(): boolean

Returns

boolean

getLocalDataSource

Interface Property

getLocalDataSource: (localId: string) => DataSource

Get local data source by local ID.

Type declaration

function(localId: string): DataSource

Parameters

Parameter	Type
`localId`	string

Returns

DataSource

getLocalDataSources

Interface Property

getLocalDataSources: () => DataSource[]

Return all local data sources created from a main data source or data view.

Type declaration

function(): DataSource[]

Returns

DataSource[]

getMainDataSource

Interface Property

getMainDataSource: () => DataSource

Return the main data source.

Type declaration

function(): DataSource

Returns

DataSource

getRecord

Interface Property

getRecord: (index: number) => DataRecord

Get record by index

Type declaration

function(index: number): DataRecord

Parameters

Parameter	Type
`index`	number

Returns

DataRecord

getRecordById

Interface Property

getRecordById: (id: string) => DataRecord

Get record by ID

Type declaration

function(id: string): DataRecord

Parameters

Parameter	Type
`id`	string

Returns

DataRecord

getRecords

Interface Property

getRecords: () => DataRecord[]

Get records

Type declaration

function(): DataRecord[]

Returns

DataRecord[]

getRecordsWithSelection

Interface Property

getRecordsWithSelection: () => DataRecord[]

If selected records are not loaded in the current data source, they will be concatenated to the end of records array. For example, record 1 is selected in data view 1 and it is not loaded in data view 2 (record 1 actually matches query params of data view 2), dataView2.getRecordsWithSelection() will return all loaded records in data view 2 and record 1.

Type declaration

function(): DataRecord[]

Returns

DataRecord[]

getRootDataSource

Interface Property

getRootDataSource: () => DataSource

Return the root data source.

Type declaration

function(): DataSource

Returns

DataSource

getSchema

Interface Property

getSchema: () => IMDataSourceSchema

The schema returned here is the merged result of the configured schema and the fetched schema. The configured schema is the user's changes, such as a new data source name. The fetched schema is the original schema from AGOL/portal item or a remote database, such as the service name, the fields and the filters.

Type declaration

function(): IMDataSourceSchema

Returns

IMDataSourceSchema

getSelectedRecordIds

Interface Property

getSelectedRecordIds: () => string[]

Get selected record IDs

Type declaration

function(): string[]

Returns

string[]

getSelectedRecordIndexes

Interface Property

getSelectedRecordIndexes: () => number[]

Get selected record indexes

Type declaration

function(): number[]

Returns

number[]

getSelectedRecords

Interface Property

getSelectedRecords: () => DataRecord[]

Get selected records

Type declaration

function(): DataRecord[]

Returns

DataRecord[]

getSelectionDataView

Interface Property

getSelectionDataView: () => DataSource

Get selection data view

Type declaration

function(): DataSource

Returns

DataSource

getSourceRecords

Interface Property

getSourceRecords: () => DataRecord[]

Return the source records

Type declaration

function(): DataRecord[]

Returns

DataRecord[]

getSourceVersion

Interface Property

getSourceVersion: () => number

When current data source is created from an array of records, it will be saved in sourceRecords . Return the version of sourceRecords .

Type declaration

function(): number

Returns

number

getStatus

Interface Property

getStatus: () => DataSourceStatus

Return data source status.

Type declaration

function(): DataSourceStatus

Returns

DataSourceStatus

getVersion

Interface Property

getVersion: () => number

Return data source version.

Type declaration

function(): number

Returns

number

id

Interface Property

id: string

The data source ID.

isDataSourceSet

Interface Property

isDataSourceSet: () => thisisDataSource & SetDataSourceMixin

Whether a data source contains child data sources. A set data source won't create all its child data sources when ready is resolved. To make sure all child data sources are created, please use childDataSourcesReady .

Type declaration

function(): thisisDataSource & SetDataSourceMixin

Returns

thisisDataSource & SetDataSourceMixin

isDataView

Interface Property

isDataView: boolean

True means the data source is a data view. For local data source, this is false even the local data source is created from a data view.

isInAppConfig

Interface Property

isInAppConfig: () => boolean

Return whether the data source is added in builder and is saved in app config.

Type declaration

function(): boolean

Returns

boolean

isLocal

Interface Property

isLocal: boolean

True means the data source is a local data source.

localId

optional

Interface Property

localId: string

The local ID of the data source.

order

optional

Interface Property

order: number

Order in the parent data source.

parentDataSource

Interface Property

parentDataSource: DataSource & SetDataSourceMixin

The parent data source of this data source, mull means it's a root data source.

ready

Interface Property

ready: () => Promise<any>

Ready is resolved means the data source instance is ready for use. Please note that can not make sure all child data sources are created if a set data source is ready. To make sure all child data sources are created, please use childDataSourcesReady .

Type declaration

function(): Promise<any>

Returns

Promise<any>

selectRecordById

Interface Property

selectRecordById: (id: string, record?: DataRecord) => void

Select a record by ID. When select record by ID, we can pass in the record. So when the selected record is not loaded, we can add it in.

Type declaration

function(id: string, record?: DataRecord): void

Parameters

Parameter	Type	Notes
`id`	string	The ID to be selected. The selection will be cleared if the ID is null.
`record`	DataRecord

Returns

void

selectRecords

Interface Property

selectRecords: (options: SelectOptions) => Promise<Pick<QueryResult, "records">>

Select records.

Type declaration

function(options: SelectOptions): Promise<Pick<QueryResult, "records">>

Parameters

Parameter	Type
`options`	SelectOptions

Returns

Promise<Pick<QueryResult, "records">>

selectRecordsByIds

Interface Property

selectRecordsByIds: (ids: string[], records?: DataRecord[]) => void

Select records by IDs. When select records by IDs, we can pass in the records. So when the selected records are not loaded, we can add them in.

Type declaration

function(ids: string[], records?: DataRecord[]): void

Parameters

Parameter	Type	Notes
`ids`	string[]	The IDs to be selected. The selection will be cleared if the IDs are null.
`records`	DataRecord[]

Returns

void

setCountStatus

optional

Interface Property

setCountStatus: (status: DataSourceStatus) => void

Update data source count status.

Type declaration

function(status: DataSourceStatus): void

Parameters

Parameter	Type
`status`	DataSourceStatus

Returns

void

setDataSourceJson

Interface Property

setDataSourceJson: (dsJson: IMDataSourceJson) => void

Update data source JSON in data source instance

Type declaration

function(dsJson: IMDataSourceJson): void

Parameters

Parameter	Type
`dsJson`	IMDataSourceJson

Returns

void

setListenSelection

Interface Property

setListenSelection: (listen: boolean) => void

Whether listen selected records from other data sources which are derived from the same main data source. If true, will update selected record IDs of current data source info when selecting records via other derived data sources. Will also update selected record IDs when selecting records via current data source itself. If false, won't change selected record IDs when selecting records via other derived data sources. Will update selected record IDs only when selecting records via current data source itself.

Main data source and its data views will listen selected records by default, local data source does not listen selected records by default.

Type declaration

function(listen: boolean): void

Parameters

Parameter	Type
`listen`	boolean

Returns

void

setRecords

Interface Property

setRecords: (records: DataRecord[]) => void

Update the records in the data source object only, does not update the source data.

Type declaration

function(records: DataRecord[]): void

Parameters

Parameter	Type
`records`	DataRecord[]

Returns

void

setSourceRecords

Interface Property

setSourceRecords: (records: DataRecord[]) => void

When current data source is created from an array of records, will save it in sourceRecords . These two methods are used to update or get the source data.

Type declaration

function(records: DataRecord[]): void

Parameters

Parameter	Type
`records`	DataRecord[]

Returns

void

setStatus

optional

Interface Property

setStatus: (status: DataSourceStatus) => void

Update data source status.

Type declaration

function(status: DataSourceStatus): void

Parameters

Parameter	Type
`status`	DataSourceStatus

Returns

void

type

Interface Property

type: string

The type of the data source.

updateSelectionInfo

Interface Property

updateSelectionInfo: (options: SelectOptions, triggerDataSource: DataSource, forceCheck?: boolean) => void

Update selected records in data source info if the current data source listens selection change (see setListenSelection ) or the current data source is the trigger data source (that is to say, select via it).

Before update info, will check whether these selected records match filters of the current data source firstly, and then only set the matched selected records to info. Will skip the check in some cases to improve performance if the forceCheck is not passed in or is false. For example, if the current data source is main data source (we suppose that main data source contains all records, no need to check). But if the forceCheck is true, won't skip the check.

Type declaration

function(options: SelectOptions, triggerDataSource: DataSource, forceCheck?: boolean): void

Parameters

Parameter	Type
`options`	SelectOptions
`triggerDataSource`	DataSource
`forceCheck`	boolean

Returns

void