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.
Properties
| Property | Type | Notes |
|---|---|---|
belongToDataSource | DataSource | The data source which this data source derives from. |
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. |
id | string | The data source ID. |
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. |
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. |
type | string | The type of the data source. |
Methods
| Method | Returns | Notes |
|---|---|---|
addSourceVersion() | void | When current data source is created from an array of records, it will be saved in |
addVersion() | void | Update data source version. |
buildRecord(data) | 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. |
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) | 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) | 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. |
getRecordById(id) | 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 |
getStatus() | DataSourceStatus | Return data source status. |
getVersion() | number | Return data source version. |
isDataSourceSet() | thisisDataSource & SetDataSourceMixin | Whether a data source contains child data sources.
A set data source won't create all its child data sources when |
isInAppConfig() | boolean | Return whether the data source is added in builder and is saved in app config. |
isSelectionView() | boolean | Determine whether the data source is a selection view. |
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 |
selectRecordById(id, record?) | 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) | Promise<Pick<QueryResult, "records">> | Select records. |
selectRecordsByIds(ids, records?) | 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) | void | Update data source count status. |
setDataSourceJson(dsJson) | void | Update data source JSON in data source instance |
setListenSelection(listen) | 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) | void | Update the records in the data source object only, does not update the source data. |
setSourceRecords(records) | void | When current data source is created from an array of records, will save it in |
setStatus(status) | void | Update data source status. |
updateSelectionInfo(options, triggerDataSource, forceCheck?) | void | Update selected records in data source info if the current data source listens selection change (see |
addSourceVersion
Interface MethodaddSourceVersion(): voidWhen 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.
Returns
voidbuildRecord
Interface MethodbuildRecord(data: any): DataRecordBuilds a data record only -- does not add the record into data source.
Parameters
| Parameter | Type |
|---|---|
data | any |
Returns
DataRecordclearRecords
clearRecords(): voidThis 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.
Returns
voidclearSourceRecords
Interface MethodclearSourceRecords(): voidClear both sourceRecords and loaded records. Both source version and version in data source info will be updated.
Returns
voidfetchSchema
Interface MethodfetchSchema(): Promise<IMDataSourceSchema>Fetch the data schema from an actual data source. If it's a statistic data source, the schema will not be fetched.
Returns
Promise<IMDataSourceSchema>getAllDerivedDataSources
Interface MethodgetAllDerivedDataSources(): DataSource[]Return the derived data views and local data sources.
Returns
DataSource[]getCountStatus
Interface MethodgetCountStatus(): DataSourceStatusReturn data source count status.
Returns
DataSourceStatusgetDataSourceJson
Interface MethodgetDataSourceJson(): IMDataSourceJsonThe data source JSON object in app config.
Returns
IMDataSourceJsongetDataView
Interface MethodgetDataView(dataViewId: string): DataSourceGet data view by data view ID.
Parameters
| Parameter | Type |
|---|---|
data | string |
Returns
DataSourcegetDataViewConfig
Interface MethodgetDataViewConfig(): IMDataViewJsonReturn the config of the current data source.
Returns
IMDataViewJsongetDataViews
Interface MethodgetDataViews(): DataSource[]Return all data views created from a main data source.
Returns
DataSource[]getInfo
Interface MethodgetInfo(): IMDataSourceInfoReturn the data source info in redux store.
Returns
IMDataSourceInfogetListenSelection
Interface MethodgetListenSelection(): booleanReturn whether listen selection.
Returns
booleangetLocalDataSource
Interface MethodgetLocalDataSource(localId: string): DataSourceGet local data source by local ID.
Parameters
| Parameter | Type |
|---|---|
local | string |
Returns
DataSourcegetLocalDataSources
Interface MethodgetLocalDataSources(): DataSource[]Return all local data sources created from a main data source or data view.
Returns
DataSource[]getMainDataSource
Interface MethodgetMainDataSource(): DataSourceReturn the main data source.
Returns
DataSourcegetRecordById
Interface MethodgetRecordById(id: string): DataRecordGet record by ID
Parameters
| Parameter | Type |
|---|---|
id | string |
Returns
DataRecordgetRecordsWithSelection
Interface MethodgetRecordsWithSelection(): 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.
Returns
DataRecord[]getRootDataSource
Interface MethodgetRootDataSource(): DataSourceReturn the root data source.
Returns
DataSourcegetSchema
Interface MethodgetSchema(): IMDataSourceSchemaThe 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.
Returns
IMDataSourceSchemagetSelectedRecordIds
Interface MethodgetSelectedRecordIds(): string[]Get selected record IDs
Returns
string[]getSelectedRecordIndexes
Interface MethodgetSelectedRecordIndexes(): number[]Get selected record indexes
Returns
number[]getSelectedRecords
Interface MethodgetSelectedRecords(): DataRecord[]Get selected records
Returns
DataRecord[]getSelectionDataView
Interface MethodgetSelectionDataView(): DataSourceGet selection data view
Returns
DataSourcegetSourceRecords
Interface MethodgetSourceRecords(): DataRecord[]Return the source records
Returns
DataRecord[]getSourceVersion
Interface MethodgetSourceVersion(): numberWhen current data source is created from an array of records, it will be saved in sourceRecords .
Return the version of sourceRecords .
Returns
numbergetStatus
Interface MethodgetStatus(): DataSourceStatusReturn data source status.
Returns
DataSourceStatusisDataSourceSet
Interface MethodisDataSourceSet(): thisisDataSource & SetDataSourceMixinWhether 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 .
Returns
thisisDataSource & SetDataSourceMixinisInAppConfig
Interface MethodisInAppConfig(): booleanReturn whether the data source is added in builder and is saved in app config.
Returns
booleanisSelectionView
Interface MethodisSelectionView(): booleanDetermine whether the data source is a selection view.
Returns
booleanready
Interface Methodready(): 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 .
Returns
Promise<any>selectRecordById
Interface MethodselectRecordById(id: string, record?: DataRecord): voidSelect 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.
Parameters
| Parameter | Type | Notes |
|---|---|---|
id | string | The ID to be selected. The selection will be cleared if the ID is null. |
record | DataRecord |
Returns
voidselectRecords
Interface MethodselectRecords(options: SelectOptions): Promise<Pick<QueryResult, "records">>Select records.
Parameters
| Parameter | Type |
|---|---|
options | SelectOptions |
Returns
Promise<Pick<QueryResult, "records">>selectRecordsByIds
Interface MethodselectRecordsByIds(ids: string[], records?: DataRecord[]): voidSelect 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.
Parameters
| Parameter | Type | Notes |
|---|---|---|
ids | string[] | The IDs to be selected. The selection will be cleared if the IDs are null. |
records | DataRecord[] |
Returns
voidsetCountStatus
setCountStatus(status: DataSourceStatus): voidUpdate data source count status.
Parameters
| Parameter | Type |
|---|---|
status | DataSourceStatus |
Returns
voidsetDataSourceJson
Interface MethodsetDataSourceJson(dsJson: IMDataSourceJson): voidUpdate data source JSON in data source instance
Parameters
| Parameter | Type |
|---|---|
ds | IMDataSourceJson |
Returns
voidsetListenSelection
Interface MethodsetListenSelection(listen: boolean): voidWhether 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.
Parameters
| Parameter | Type |
|---|---|
listen | boolean |
Returns
voidsetRecords
Interface MethodsetRecords(records: DataRecord[]): voidUpdate the records in the data source object only, does not update the source data.
Parameters
| Parameter | Type |
|---|---|
records | DataRecord[] |
Returns
voidsetSourceRecords
Interface MethodsetSourceRecords(records: DataRecord[]): voidWhen 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.
Parameters
| Parameter | Type |
|---|---|
records | DataRecord[] |
Returns
voidsetStatus
setStatus(status: DataSourceStatus): voidUpdate data source status.
Parameters
| Parameter | Type |
|---|---|
status | DataSourceStatus |
Returns
voidupdateSelectionInfo
Interface MethodupdateSelectionInfo(options: SelectOptions, triggerDataSource: DataSource, forceCheck?: boolean): voidUpdate 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.
Parameters
| Parameter | Type |
|---|---|
options | SelectOptions |
trigger | DataSource |
force | boolean |
Returns
void