uk.ac.starlink.vo

Class Regtap12ServiceFinder

java.lang.Object

uk.ac.starlink.vo.Regtap12ServiceFinder

All Implemented Interfaces:

TapServiceFinder

public class Regtap12ServiceFinder
extends Object
implements TapServiceFinder

TapServiceFinder implementation that uses an IVOA registry compliant with RegTAP v1.2 to discover services and tables. In particular the new rr.tap_table table introduced at RegTAP v1.2 is used.

Since:

28 Feb 2024

Author:

Mark Taylor

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
Regtap12ServiceFinder() Constructs a default instance.
Regtap12ServiceFinder(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

Regtap12ServiceFinder

public Regtap12ServiceFinder()

Constructs a default instance.

Regtap12ServiceFinder

public Regtap12ServiceFinder(TapService regtapService,
                             ContentCoding coding)

Constructs an instance with custom configuration.

Parameters:

regtapService - RegTAP v1.2 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