Package uk.ac.starlink.vo
Class GlotsServiceFinder
- java.lang.Object
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- uk.ac.starlink.vo.GlotsServiceFinder
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- All Implemented Interfaces:
TapServiceFinder
public class GlotsServiceFinder extends java.lang.Object implements TapServiceFinder
TapServiceFinder implementation that uses the GloTS schema maintained (at time of writing) at the GAVO Data Center. GloTS is a non-standard registry containing metadata gathered by hook or by crook from all known registered TAP services.It is not very respectable to use this resource; the correct way to find out this kind of thing is using the standard interfaces of the IVOA Registry. However, at time of writing (June 2015) the Registry does not contain sufficiently detailed metadata (in particular, lists of table names and descriptions for each service) to do the job, while GloTS does.
- Since:
- 30 Jun 2015
- Author:
- Mark Taylor
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Nested Class Summary
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Nested classes/interfaces inherited from interface uk.ac.starlink.vo.TapServiceFinder
TapServiceFinder.Constraint, TapServiceFinder.Service, TapServiceFinder.Table, TapServiceFinder.Target
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Field Summary
Fields Modifier and Type Field Description static java.lang.String
GAVO_DC_TAP_URL
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Constructor Summary
Constructors Constructor Description GlotsServiceFinder()
Constructs a default instance.GlotsServiceFinder(EndpointSet glotsEndpointSet, uk.ac.starlink.util.ContentCoding coding)
Constructs an instance with custom configuration.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method 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.
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Field Detail
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GAVO_DC_TAP_URL
public static final java.lang.String GAVO_DC_TAP_URL
- See Also:
- Constant Field Values
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Constructor Detail
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GlotsServiceFinder
public GlotsServiceFinder()
Constructs a default instance.
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GlotsServiceFinder
public GlotsServiceFinder(EndpointSet glotsEndpointSet, uk.ac.starlink.util.ContentCoding coding)
Constructs an instance with custom configuration.- Parameters:
glotsEndpointSet
- TAP endpoints for a service containing GloTS tablescoding
- controls HTTP-level compression during TAP queries
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Method Detail
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readAllServices
public TapServiceFinder.Service[] readAllServices() throws java.io.IOException
Description copied from interface:TapServiceFinder
Reads basic metadata about all known TAP services. May be slow.- Specified by:
readAllServices
in interfaceTapServiceFinder
- Returns:
- list of TAP services
- Throws:
java.io.IOException
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readSelectedTables
public TapServiceFinder.Table[] readSelectedTables(TapServiceFinder.Constraint constraint) throws java.io.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 interfaceTapServiceFinder
- Parameters:
constraint
- object indicating the tables of interest- Returns:
- list of tables matching constraint
- Throws:
java.io.IOException
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