ISpeciesObservationDataSource.GetDarwinCoreChange Method

ISpeciesObservationDataSourceGetDarwinCoreChange Method

Get information about species observations that has changed. Scope is restricted to those observations that the user has access rights to. There is no access right check on deleted species observations. This means that a client can obtain information about deleted species observations that the client has not received any create or update information about. Max 25000 species observation changes can be retrieved in one web service call. Exactly one of the parameters changedFrom and changeId should be specified.

Namespace: ArtDatabanken.Data.DataSource
Assembly: ArtDatabanken.Data (in ArtDatabanken.Data.dll) Version: 1.3.0.0 (1.3.0.0)

Syntax

C++

Copy

IDarwinCoreChange GetDarwinCoreChange(
	IUserContext userContext,
	Nullable<DateTime> changedFrom,
	Nullable<DateTime> changedTo,
	Nullable<long> changeId,
	long maxReturnedChanges,
	ISpeciesObservationSearchCriteria searchCriteria,
	ICoordinateSystem coordinateSystem
)

Function GetDarwinCoreChange ( 
	userContext As IUserContext,
	changedFrom As Nullable(Of DateTime),
	changedTo As Nullable(Of DateTime),
	changeId As Nullable(Of Long),
	maxReturnedChanges As Long,
	searchCriteria As ISpeciesObservationSearchCriteria,
	coordinateSystem As ICoordinateSystem
) As IDarwinCoreChange

IDarwinCoreChange^ GetDarwinCoreChange(
	IUserContext^ userContext, 
	Nullable<DateTime> changedFrom, 
	Nullable<DateTime> changedTo, 
	Nullable<long long> changeId, 
	long long maxReturnedChanges, 
	ISpeciesObservationSearchCriteria^ searchCriteria, 
	ICoordinateSystem^ coordinateSystem
)

abstract GetDarwinCoreChange : 
        userContext : IUserContext * 
        changedFrom : Nullable<DateTime> * 
        changedTo : Nullable<DateTime> * 
        changeId : Nullable<int64> * 
        maxReturnedChanges : int64 * 
        searchCriteria : ISpeciesObservationSearchCriteria * 
        coordinateSystem : ICoordinateSystem -> IDarwinCoreChange

Parameters

userContext: Type: ArtDatabanken.DataIUserContext
User context.
changedFrom: Type: SystemNullableDateTime
Start date and time for changes that should be returned.
changedTo: Type: SystemNullableDateTime
End date and time for changes that should be returned. Parameter changedTo is optional and works with either parameter changedFrom or changeId.
changeId: Type: SystemNullableInt64
Start id for changes that should be returned. The species observation that is changed in the specified change id may be included in returned information.
maxReturnedChanges: Type: SystemInt64
Requested maximum number of changes that should be returned. This property is used by the client to avoid problems with resource limitations on the client side. Max 25000 changes are returned if property maxChanges has a higher value than 25000.
searchCriteria: Type: ArtDatabanken.DataISpeciesObservationSearchCriteria
Only species observations that matches the search criteria are included in the returned information. This parameter is optional and may be null. There is no check on search criteria for deleted species observations.
coordinateSystem: Type: ArtDatabanken.DataICoordinateSystem
Coordinate system used in returned species observations.

Return Value

Type: IDarwinCoreChange
Information about changed species observations.

Reference

ISpeciesObservationDataSource Interface

ArtDatabanken.Data.DataSource Namespace