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 connnect 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 |
---|---|---|
The data source which this data source derives from. | ||
number | The total records count depends on the current query | |
string | The data view ID configured in Json. | |
string | The data source ID. | |
boolean | Whether a data source contains child data sources.
A dataset data source should create all its child data sources before | |
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. | |
boolean | True means the data source is a local data source. | |
string | The local ID of the data source. | |
number | Order in the parent data source. | |
The parent data source of this data source, mull means it's a root data source. | ||
string | The type of the data source |
isDataSourceSet
Interface PropertyisDataSourceSet: boolean
Whether a data source contains child data sources.
A dataset data source should create all its child data sources before ready()
is resolved.
isDataView
Interface PropertyisDataView: 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.
parentDataSource
Interface PropertyparentDataSource: DataSource
The parent data source of this data source, mull means it's a root data source.
Methods
Method | Returns | Notes |
---|---|---|
void | When current data source is created from an array of records, it will be saved in | |
void | Update data source version. | |
buildRecord(data) | Builds a data record only -- does not add the record into data source. | |
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. | |
void | Clear both sourceRecords and loaded records. Both source version and version in data source info will be updated. | |
Promise<IMDataSourceSchema> | Fetch the data schema from an actual data source. If it's a statistic data source, the schema will not be fetched. | |
Return all child data sources of a parent data source, includes the grandchildren | ||
Return the derived data views and local data sources. | ||
getChildDataSource(jimuChildId) | Get child data source by | |
Return child data sources of a parent data source. | ||
Return data source count status. | ||
IMDataSourceJson | The data source JSON object in app config. | |
getDataView(dataViewId) | Get data view by data view ID. | |
Return all data views created from a main data source. | ||
string | Return the data source ID field. | |
getInfo() | IMDataSourceInfo | Return the data source info in redux store. |
getLabel() | string | Return data source label. |
boolean | Return whether listen selection. | |
getLocalDataSource(localId) | Get local data source by local ID. | |
Return all local data sources created from a main data source or data view. | ||
Return the main data source. | ||
getRecord(index) | Get record by index | |
getRecordById(id) | Get record by ID | |
Get records | ||
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. | ||
Return the root data source. | ||
The schema returned here is the merged result of the configured schema and the fetched schema. | ||
string[] | Get selected record IDs | |
number[] | Get selected record indexes | |
Get selected records | ||
Return the source records | ||
number | When current data source is created from an array of records, it will be saved in | |
Return data source status. | ||
number | Return data source version. | |
boolean | Return whether the data source is added in builder and is saved in app config. | |
ready() | Promise<any> | Ready is resolved means the data source instance is ready for use. |
selectRecordById(id, record?, forceCheck?) | 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.
If |
selectRecordsByIds(ids, records?, forceCheck?) | 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.
If |
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. See DataSourceEditSourceOperations.updateRecords |
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(ids, triggerDataSource, forceCheck?) | void | Update selected record IDs in data source info if the current data source listens selection change (see |
addSourceVersion
Interface MethodaddSourceVersion(): 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.
Returns
void
buildRecord
Interface MethodbuildRecord(data: any): DataRecord
Builds a data record only -- does not add the record into data source.
Parameters
Parameter | Type |
---|---|
data | any |
Returns
DataRecord
clearRecords
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.
Returns
void
clearSourceRecords
Interface MethodclearSourceRecords(): void
Clear both sourceRecords and loaded records. Both source version and version in data source info will be updated.
Returns
void
fetchSchema
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>
getAllChildDataSources
getAllChildDataSources(): DataSource[]
Return all child data sources of a parent data source, includes the grandchildren
Returns
DataSource[]
getAllDerivedDataSources
Interface MethodgetAllDerivedDataSources(): DataSource[]
Return the derived data views and local data sources.
Returns
DataSource[]
getChildDataSource
getChildDataSource(jimuChildId: string): DataSource
Get child data source by jimuChildId
. You can get jimuChildId
by getJimuChildId()
.
Parameters
Parameter | Type |
---|---|
jimu | string |
Returns
DataSource
getChildDataSources
getChildDataSources(): DataSource[]
Return child data sources of a parent data source.
Returns
DataSource[]
getCountStatus
Interface MethodgetCountStatus(): DataSourceStatus
Return data source count status.
Returns
DataSourceStatus
getDataSourceJson
Interface MethodgetDataSourceJson(): IMDataSourceJson
The data source JSON object in app config.
Returns
IMDataSourceJson
getDataView
Interface MethodgetDataView(dataViewId: string): DataSource
Get data view by data view ID.
Parameters
Parameter | Type |
---|---|
data | string |
Returns
DataSource
getDataViews
Interface MethodgetDataViews(): DataSource[]
Return all data views created from a main data source.
Returns
DataSource[]
getInfo
Interface MethodgetInfo(): IMDataSourceInfo
Return the data source info in redux store.
Returns
IMDataSourceInfo
getListenSelection
Interface MethodgetListenSelection(): boolean
Return whether listen selection.
Returns
boolean
getLocalDataSource
Interface MethodgetLocalDataSource(localId: string): DataSource
Get local data source by local ID.
Parameters
Parameter | Type |
---|---|
local | string |
Returns
DataSource
getLocalDataSources
Interface MethodgetLocalDataSources(): DataSource[]
Return all local data sources created from a main data source or data view.
Returns
DataSource[]
getMainDataSource
Interface MethodgetMainDataSource(): DataSource
Return the main data source.
Returns
DataSource
getRecord
Interface MethodgetRecord(index: number): DataRecord
Get record by index
Parameters
Parameter | Type |
---|---|
index | number |
Returns
DataRecord
getRecordById
Interface MethodgetRecordById(id: string): DataRecord
Get record by ID
Parameters
Parameter | Type |
---|---|
id | string |
Returns
DataRecord
getRecordsWithSelection
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(): DataSource
Return the root data source.
Returns
DataSource
getSchema
Interface MethodgetSchema(): IMDataSourceSchema
The schema returned here is the merged result of the configured schema and the fetched schema.
Returns
IMDataSourceSchema
getSelectedRecordIds
getSelectedRecordIds(): string[]
Get selected record IDs
Returns
string[]
getSelectedRecordIndexes
getSelectedRecordIndexes(): number[]
Get selected record indexes
Returns
number[]
getSelectedRecords
getSelectedRecords(): DataRecord[]
Get selected records
Returns
DataRecord[]
getSourceRecords
Interface MethodgetSourceRecords(): DataRecord[]
Return the source records
Returns
DataRecord[]
getSourceVersion
Interface MethodgetSourceVersion(): number
When current data source is created from an array of records, it will be saved in sourceRecords
.
Return the version of sourceRecords
.
Returns
number
getStatus
Interface MethodgetStatus(): DataSourceStatus
Return data source status.
Returns
DataSourceStatus
isInAppConfig
Interface MethodisInAppConfig(): boolean
Return whether the data source is added in builder and is saved in app config.
Returns
boolean
ready
Interface Methodready(): Promise<any>
Ready is resolved means the data source instance is ready for use.
Returns
Promise<any>
selectRecordById
selectRecordById(id: string, record?: DataRecord, forceCheck?: boolean): 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.
If forceCheck
is true, will check whether the record match filters of the data source or not. Will select the record only if the check is passed.
Parameters
Parameter | Type | Notes |
---|---|---|
id | string | The ID to be selected. The selection will be cleared if the ID is null. |
record | DataRecord | |
force | boolean |
Returns
void
selectRecordsByIds
selectRecordsByIds(ids: string[], records?: DataRecord[], forceCheck?: boolean): 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.
If forceCheck
is true, will check whether these records match filters of the data source or not. Will select the records which check is passed.
Parameters
Parameter | Type | Notes |
---|---|---|
ids | string[] | The IDs to be selected. The selection will be cleared if the IDs are null. |
records | DataRecord[] | |
force | boolean |
Returns
void
setCountStatus
setCountStatus(status: DataSourceStatus): void
Update data source count status.
Parameters
Parameter | Type |
---|---|
status | DataSourceStatus |
Returns
void
setDataSourceJson
Interface MethodsetDataSourceJson(dsJson: IMDataSourceJson): void
Update data source JSON in data source instance
Parameters
Parameter | Type |
---|---|
d | IMDataSourceJson |
Returns
void
setListenSelection
Interface MethodsetListenSelection(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.
Parameters
Parameter | Type |
---|---|
listen | boolean |
Returns
void
setRecords
Interface MethodsetRecords(records: DataRecord[]): void
Update the records in the data source object only, does not update the source data. See DataSourceEditSourceOperations.updateRecords
Parameters
Parameter | Type |
---|---|
records | DataRecord[] |
Returns
void
setSourceRecords
Interface MethodsetSourceRecords(records: DataRecord[]): void
When current data source is created from an array of records, will save it in sourceRecords
.
These two methods are use to update or get the source data.
Parameters
Parameter | Type |
---|---|
records | DataRecord[] |
Returns
void
setStatus
setStatus(status: DataSourceStatus): void
Update data source status.
Parameters
Parameter | Type |
---|---|
status | DataSourceStatus |
Returns
void
updateSelectionInfo
updateSelectionInfo(ids: string[], triggerDataSource: DataSource, forceCheck?: boolean): void
Update selected record IDs 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 curren 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 |
---|---|
ids | string[] |
trigger | DataSource |
force | boolean |
Returns
void
belongToDataSource: DataSource
The data source which this data source derives from.