uk.ac.starlink.vo

Interface TapServiceFinder

All Known Implementing Classes:

AuxServiceFinder, GlotsServiceFinder, Regtap12ServiceFinder

public interface TapServiceFinder

Defines an object that can make global queries (from the registry or some registry-like entity) about all TAP services and tables satisfying certain constraints.

This interface defines a couple of methods that implementations must implement, and a number of interfaces defining parameter and return types used by those methods.

Since:

30 Jun 2015

Author:

Mark Taylor

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	TapServiceFinder.Constraint Describes constraints on tables to be found by a certain query.
static interface	TapServiceFinder.Service Basic metadata describing a TAP service.
static interface	TapServiceFinder.Table Basic metadata describing a table provided by a TAP service.
static class	TapServiceFinder.Target Enumerates those metadata items against which search terms can be matched.

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.

Method Detail

readAllServices

TapServiceFinder.Service[] readAllServices()
                                    throws IOException

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

Returns:

list of TAP services

Throws:

IOException

readSelectedTables

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

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

Parameters:

constraint - object indicating the tables of interest

Returns:

list of tables matching constraint

Throws:

IOException