uk.ac.starlink.vo

Class AuxServiceFinder

java.lang.Object

uk.ac.starlink.vo.AuxServiceFinder

All Implemented Interfaces:

TapServiceFinder

public class AuxServiceFinder
extends Object
implements TapServiceFinder

TapServiceFinder implementation that uses the IVOA Registry along with an "auxiliary" labelling of tableset resources. This is a version of the scheme proposed by Markus Demleitner's IVOA Note "Discovering Data Collections Within Services", version 1.1.

Since:

6 Aug 2015

Author:

Mark Taylor

See Also:

Discovering Data Collections Within Services

Nested Class Summary

Nested classes/interfaces inherited from interface uk.ac.starlink.vo.TapServiceFinder

TapServiceFinder.Constraint, TapServiceFinder.Service, TapServiceFinder.Table, TapServiceFinder.Target

Constructor Summary

Constructors

Constructor and Description
AuxServiceFinder() Constructs a default instance.
AuxServiceFinder(TapService regtapService, ContentCoding coding) Constructs an instance with custom configuration.

Method Summary

Modifier and Type	Method and Description
TapServiceFinder.Service[]	readAllServices() Reads basic metadata about all known TAP services.
TapServiceFinder.Table[]	readSelectedTables(TapServiceFinder.Constraint constraint) Locates a list of tables from a global list of all known tables served by all known TAP services that satisfy a given constraint.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AuxServiceFinder

public AuxServiceFinder()

Constructs a default instance.

AuxServiceFinder

public AuxServiceFinder(TapService regtapService,
                        ContentCoding coding)

Constructs an instance with custom configuration.

Parameters:

regtapService - RegTAP service description

coding - controls HTTP-level compression during TAP queries

Method Detail

readAllServices

public TapServiceFinder.Service[] readAllServices()
                                           throws IOException

Description copied from interface: TapServiceFinder

Reads basic metadata about all known TAP services. May be slow.

Specified by:

readAllServices in interface TapServiceFinder

Returns:

list of TAP services

Throws:

IOException

readSelectedTables

public TapServiceFinder.Table[] readSelectedTables(TapServiceFinder.Constraint constraint)
                                            throws IOException

Description copied from interface: TapServiceFinder

Locates a list of tables from a global list of all known tables served by all known TAP services that satisfy a given constraint.

Specified by:

readSelectedTables in interface TapServiceFinder

Parameters:

constraint - object indicating the tables of interest

Returns:

list of tables matching constraint

Throws:

IOException