Reference for DSService.svc - DSDataRequest

Reference for DSService.svc - DSDataRequest

Specifies the object that defines a data request.

DSDataRequest

The DSDataRequest type has the following members.

Name	Type	Description	Example Value
Instrument	DSInstrument	The instrument for the request	Refer DSInstrument for details.
DataTypes	DSDataType[]	The array of datatypes for the request	Refer DSDataType for details.
Date	DSDate	The date information (static or timeseries) for the request	Refer DSDate for details.
Tag	String	A user defined tag that is returned in the response	null

DSInstrument

The DSInstrument type has the following members.

Name	Type	Description	Example Value
Value	String	The instrument value. This can be a symbol (viz. Datastream mnemonic, RIC, ISIN etc) or an expression or a list or a set of symbols.	Ex: VOD (or) VOD.L (or) VOD,BARC (or) LFTSE100 (or) VOD(PL) + BARC(PH).
Properties	DSStringObjectKVPair[]	The properties that describe the instrument. Refer DSInstrumentPropertyNames for more details.	If you are using a expression, then create a property with key "IsExpression" and value true. If you are using multiple symbols, then create a property with key "IsSymbolSet" and value true.

DSDataType

The DSDataType type has the following members.

Name	Type	Description	Example Value
Value	String	The datatype name.	Ex: PL (or) PH (or) MV (or) NAME.
Properties	DSStringObjectKVPair[]	The properties that describe the datatypes.	null

DSDate

The DSDate type has the following members.

Name	Type	Description	Example Value
Start	String	The start date. The dates can be relative dates or absolute dates or string literals. Refer DSDateNames for string literals.	Ex: -30D (or) 2011-12-31 (or) BDATE.
End	String	The end date. The dates can be relative dates or absolute dates or string literals. Refer DSDateNames for string literals.	Ex: -30D (or) 2011-12-31 (or) BDATE.
Frequency	String	The frequency. Refer DSDateFrequencyNames for allowed frequencies.	Ex: D (or) W (or) M (or) Q (or) Y.
Kind	DSDateKind	Defines whether the date is a snapshot (static) or a time series date. It is enough to specify only start date for a snapshot date.	Ex: TimeSeries, Snapshot.