uk.ac.starlink.ttools.votlint

Class FitsHandler

java.lang.Object

uk.ac.starlink.ttools.votlint.ElementHandler

uk.ac.starlink.ttools.votlint.StreamingHandler

uk.ac.starlink.ttools.votlint.FitsHandler

All Implemented Interfaces:

TableSink

public class FitsHandler
extends StreamingHandler
implements TableSink

Element handler for FITS elements. The main job this does is to read the FITS file and check that the columns in it match the columns declared in the VOTable FIELD elements. The messages it issues are warnings rather than errors, since the VOTable standard explicitly says that parsers can treat inconsistencies between FITS and VOTable metadata however they like.

Since:

12 Apr 2005

Author:

Mark Taylor (Starlink)

Constructor Summary

Constructors

Constructor and Description
FitsHandler()

Method Summary

Modifier and Type	Method and Description
void	acceptMetadata(StarTable meta) Takes delivery of a row-less StarTable object which defines the metadata of the table to be transmitted.
void	acceptRow(Object[] row) Takes delivery of one row of data.
void	endRows() Signals that there are no more rows to be transmitted.
void	feed(InputStream in) Consumes a decoded input stream containing the data of a table, encoded according to the rules specified by this element.

Methods inherited from class uk.ac.starlink.ttools.votlint.StreamingHandler

foundRow, getFields, startElement

Methods inherited from class uk.ac.starlink.ttools.votlint.ElementHandler

characters, configure, endElement, error, getAncestry, getAttribute, getContext, getName, getRef, info, registerChildName, setAncestry, setAttributes, toString, warning

Methods inherited from class java.lang.Object

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

Constructor Detail

FitsHandler

public FitsHandler()

Method Detail

feed

public void feed(InputStream in)
          throws IOException

Description copied from class: StreamingHandler

Consumes a decoded input stream containing the data of a table, encoded according to the rules specified by this element.

Specified by:

feed in class StreamingHandler

Parameters:

in - input stream to read

Throws:

IOException

acceptMetadata

public void acceptMetadata(StarTable meta)

Description copied from interface: TableSink

Takes delivery of a row-less StarTable object which defines the metadata of the table to be transmitted. If the number of rows that will be transmitted via subsequent calls to acceptRow is known, this value should be made available as the row count of meta (StarTable.getRowCount()); if it is not known, the row count should be -1. However, this object should not attempt to read any of meta's cell data.

The data to be transmitted in subsequent calls of acceptRow must match the metadata transmitted in this call in the same way that rows of a StarTable must match its own metadata (number and content clases of columns etc). If this sink cannot dispose of a table corresponding to meta then it may throw a TableFormatException - this may be the case if for instance meta has columns with types that this sink can't deal with.

Specified by:

acceptMetadata in interface TableSink

Parameters:

meta - table metadata object

acceptRow

public void acceptRow(Object[] row)

Description copied from interface: TableSink

Takes delivery of one row of data. row is an array of objects comprising the contents of one row of the table being transmitted. The number and classes of the elements of row are described by the metadata object previously accepted.

Specified by:

acceptRow in interface TableSink

Parameters:

row - table data row

endRows

public void endRows()

Description copied from interface: TableSink

Signals that there are no more rows to be transmitted.

Specified by:

endRows in interface TableSink