Class VizieRReader

java.lang.Object

org.episteme.core.io.AbstractResourceReader<List<Map<String,String>>>

org.episteme.natural.physics.loaders.VizieRReader

All Implemented Interfaces:

ResourceIO<List<Map<String,String>>>, ResourceReader<List<Map<String,String>>>

public class VizieRReader
extends AbstractResourceReader<List<Map<String,String>>>

VizieR astronomical catalog loader.

This reader retrieves data from the VizieR Service (CDS, Strasbourg) in VOTable format and parses it into structured records.

Since:

1.0

Author:

Silvere Martin-Michiellot, Gemini AI (Google DeepMind)

Field Summary

Fields

Modifier and Type	Field	Description
static final String	GAIA_DR3
static final String	HIPPARCOS	Common catalog identifiers.
static final String	SIMBAD
static final String	TYCHO2
static final String	USNO_B1

Constructor Summary

Constructors

Constructor	Description
VizieRReader()

Method Summary

Modifier and Type	Method	Description
static String	getCatalogUrl(String catalog)	Gets catalog URL for browsing.
String	getCategory()	Returns the category for grouping.
String	getDescription()	Returns a short description of this resource handler.
String	getLongDescription()	Returns a long description of this resource handler.
protected MiniCatalog<List<Map<String,String>>>	getMiniCatalog()
String	getName()	Returns the display name of this resource handler.
String	getResourcePath()	Returns the base path where this resource is located.
Class<List<Map<String,String>>>	getResourceType()	Returns the type of resource.
String[]	getSupportedVersions()	Returns the supported versions of the format this reader/writer handles.
protected List<Map<String,String>>	loadFromSource(String id)
static List<Map<String,String>>	queryByCoordinates(double ra, double dec, double radiusArcmin, String catalog)	Queries stars within radius of coordinates.
static List<Map<String,String>>	queryByCoordinates(Real ra, Real dec, double radiusArcmin, String catalog)	Queries stars within radius of coordinates (Real precision).
static List<Map<String,String>>	queryByCoordinates(Real ra, Real dec, Real radiusArcmin, String catalog)	Queries stars within radius of coordinates (Real precision).
static List<Map<String,String>>	queryByObject(String objectName, String catalog)	Queries a VizieR catalog by object name.

Methods inherited from class AbstractResourceReader

clearCache, getSampleDataPath, isUsingFallback, load, loadAll, loadAllFromSource, loadFromFallback, loadFromInputStream, setCacheEnabled

Methods inherited from class Object

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

Methods inherited from interface ResourceIO

getExpectedResourceFiles, getSupportedExtensions, isFileBased, isOutput

Methods inherited from interface ResourceReader

isInput

Field Details

HIPPARCOS

public static final String HIPPARCOS

Common catalog identifiers.

See Also:

• Constant Field Values

TYCHO2

public static final String TYCHO2

See Also:

• Constant Field Values

GAIA_DR3

public static final String GAIA_DR3

See Also:

• Constant Field Values

SIMBAD

public static final String SIMBAD

See Also:

• Constant Field Values

USNO_B1

public static final String USNO_B1

See Also:

• Constant Field Values

Constructor Details

VizieRReader

public VizieRReader()

Method Details

getCategory

public String getCategory()

Description copied from interface: ResourceIO

Returns the category for grouping. MUST be implemented with I18N support.

Returns:

the category name

getDescription

public String getDescription()

Description copied from interface: ResourceIO

Returns a short description of this resource handler. MUST be implemented with I18N support.

Returns:

the description

getLongDescription

public String getLongDescription()

Description copied from interface: ResourceIO

Returns a long description of this resource handler. MUST be implemented with I18N support.

Returns:

the long description

getResourcePath

public String getResourcePath()

Description copied from interface: ResourceIO

Returns the base path where this resource is located.

getResourceType

public Class<List<Map<String,String>>> getResourceType()

Description copied from interface: ResourceIO

Returns the type of resource.

loadFromSource

protected List<Map<String,String>> loadFromSource(String id)
                                           throws Exception

Specified by:

loadFromSource in class AbstractResourceReader<List<Map<String,String>>>

Throws:

Exception

getMiniCatalog

protected MiniCatalog<List<Map<String,String>>> getMiniCatalog()

Overrides:

getMiniCatalog in class AbstractResourceReader<List<Map<String,String>>>

queryByObject

public static List<Map<String,String>> queryByObject(String objectName,
 String catalog)

Queries a VizieR catalog by object name.

getCatalogUrl

public static String getCatalogUrl(String catalog)

Gets catalog URL for browsing.

queryByCoordinates

public static List<Map<String,String>> queryByCoordinates(double ra,
 double dec,
 double radiusArcmin,
 String catalog)

Queries stars within radius of coordinates.

queryByCoordinates

public static List<Map<String,String>> queryByCoordinates(Real ra,
 Real dec,
 double radiusArcmin,
 String catalog)

Queries stars within radius of coordinates (Real precision).

queryByCoordinates

public static List<Map<String,String>> queryByCoordinates(Real ra,
 Real dec,
 Real radiusArcmin,
 String catalog)

Queries stars within radius of coordinates (Real precision).

getSupportedVersions

public String[] getSupportedVersions()

Description copied from interface: ResourceIO

Returns the supported versions of the format this reader/writer handles.

Each implementation MUST override this method to declare which versions of the underlying format are supported. The returned array should contain version strings in the format's standard notation (e.g., "3.0", "2.1", "Level 3 Version 2").

Examples:

• MathML: {"3.0", "2.0"}
• SBML: {"Level 3 Version 2", "Level 3 Version 1", "Level 2 Version 5"}
• PhyloXML: {"1.10", "1.00"}

Returns:

array of supported version strings, never null (empty array if version-agnostic)

getName

public String getName()

Description copied from interface: ResourceIO

Returns the display name of this resource handler. MUST be implemented with I18N support.

Returns:

the display name