uk.ac.starlink.votable.datalink
Interface ServiceDescriptor


public interface ServiceDescriptor

Describes an invocable service as defined by a DataLink Service Descriptor. This is usually read from a VOTable RESOURCE element with @type="meta" and @utype="adhoc:service".

Since:
22 Nov 2017
See Also:
DataLink-1.0, sec 4

Method Summary
 java.lang.String getAccessUrl()
          Returns the access URL defined by this service.
 java.lang.String getDescription()
          Returns descriptive text for this service.
 java.lang.String getDescriptorId()
          Returns the identifier for this service descriptor.
 ServiceParam[] getInputParams()
          Returns a list of input parameters associated with this service.
 java.lang.String getName()
          Returns a name for this service.
 java.lang.String getResourceIdentifier()
          Returns an IVOA registry identifier for this service.
 java.lang.String getStandardId()
          Returns the capability URI corresponding to this service.
 

Method Detail

getDescriptorId

java.lang.String getDescriptorId()
Returns the identifier for this service descriptor. This corresponds to the ID attribute on the RESOURCE.

Returns:
descriptor ID, may be null

getAccessUrl

java.lang.String getAccessUrl()
Returns the access URL defined by this service. It may be a partial/base URL. This corresponds to the PARAM with @name="accessURL".

Returns:
access URL; according to DataLink this is required, but this interface does not guarantee a non-null value

getStandardId

java.lang.String getStandardId()
Returns the capability URI corresponding to this service. This corresponds to the PARAM with @name="standardID".

Returns:
standardID, may be null

getResourceIdentifier

java.lang.String getResourceIdentifier()
Returns an IVOA registry identifier for this service. This corresponds to the PARAM with @name="resourceIdentifier".

Returns:
ivoid, may be null

getName

java.lang.String getName()
Returns a name for this service. This could for instance be obtained from the name attribute on the RESOURCE. Provision of this metadata is not discussed by the DataLink standard, but it may be useful to have, especially for service descriptors in "normal" rather than links-response VOTables.

Returns:
service name, may be null

getDescription

java.lang.String getDescription()
Returns descriptive text for this service. This could for instance be extracted from a suitable DESCRIPTION element. Provision of this metadata is not discussed by the DataLink standard, but it may be useful to have, especially for service descriptors in "normal" rather than links-response VOTables.

Returns:
textual description of service, may be null

getInputParams

ServiceParam[] getInputParams()
Returns a list of input parameters associated with this service. This corresponds to the PARAM descendants of a child GROUP with @name="inputParams".

Returns:
service input parameter list