uk.ac.starlink.votable

Class TableContentHandler

java.lang.Object

uk.ac.starlink.votable.TableContentHandler

All Implemented Interfaces:

ContentHandler

Direct Known Subclasses:

DalResultStreamer

public class TableContentHandler
extends Object
implements ContentHandler

Content handler which translates SAX events into table events. It holds a TableHandler object which, if non-null, is messaged for every suitable DATA element in the input stream. Inline tables (TABLEDATA ones and FITS/BINARY/BINARY2 ones in which STREAM element contains the byte data as text children) are always messaged to the handler. Externally-referenced ones (FITS/BINARY/BINARY2 ones in which the data is located from an href attribute on the STREAM element) may either be ignored or streamed to the table handler according to the setting of the setReadHrefTables member.

Since:

15 Apr 2005

Author:

Mark Taylor (Starlink)

Constructor Summary

Constructors

Constructor and Description
TableContentHandler(boolean strict) Constructor.

Method Summary

Modifier and Type	Method and Description
void	characters(char[] ch, int start, int length)
void	endDocument()
void	endElement(String namespaceURI, String localName, String qName)
void	endPrefixMapping(String prefix)
Locator	getLocator() Returns the document locator.
boolean	getReadHrefTables() Indicates whether href-referenced tables should be streamed to the table handler.
TableHandler	getTableHandler() Returns the TableHandler object for this parser.
void	ignorableWhitespace(char[] ch, int start, int length)
void	processingInstruction(String target, String data)
void	setDocumentLocator(Locator locator)
void	setReadHrefTables(boolean readHrefs) Sets whether href-referenced tables should be streamed to the table handler.
void	setTableHandler(TableHandler handler) Sets the TableHandler object for this parser.
void	skippedEntity(String name)
void	startDocument()
void	startElement(String namespaceURI, String localName, String qName, Attributes atts)
void	startPrefixMapping(String prefix, String uri)

Methods inherited from class java.lang.Object

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

Constructor Detail

TableContentHandler

public TableContentHandler(boolean strict)

Constructor.

Parameters:

strict - whether to effect a strict reading of the VOTable standard

Method Detail

setTableHandler

public void setTableHandler(TableHandler handler)

Sets the TableHandler object for this parser. If set to a non-null value, the handler will be messaged with the table metadata and data for each table (each DATA element) encountered in parsing the VOTable document.

Parameters:

handler - table handler

getTableHandler

public TableHandler getTableHandler()

Returns the TableHandler object for this parser.

Returns:

table handler

setReadHrefTables

public void setReadHrefTables(boolean readHrefs)

Sets whether href-referenced tables should be streamed to the table handler.

Parameters:

readHrefs - if true, externally-referenced tables will be messaged to the handler, if false they will be ignored

getReadHrefTables

public boolean getReadHrefTables()

Indicates whether href-referenced tables should be streamed to the table handler.

Returns:

true if externally-referenced tables will be messaged to the handler, false if they will be ignored

getLocator

public Locator getLocator()

Returns the document locator.

Returns:

locator

setDocumentLocator

public void setDocumentLocator(Locator locator)

Specified by:

setDocumentLocator in interface ContentHandler

startDocument

public void startDocument()
                   throws SAXException

Specified by:

startDocument in interface ContentHandler

Throws:

SAXException

endDocument

public void endDocument()
                 throws SAXException

Specified by:

endDocument in interface ContentHandler

Throws:

SAXException

startElement

public void startElement(String namespaceURI,
                         String localName,
                         String qName,
                         Attributes atts)
                  throws SAXException

Specified by:

startElement in interface ContentHandler

Throws:

SAXException

endElement

public void endElement(String namespaceURI,
                       String localName,
                       String qName)
                throws SAXException

Specified by:

endElement in interface ContentHandler

Throws:

SAXException

characters

public void characters(char[] ch,
                       int start,
                       int length)
                throws SAXException

Specified by:

characters in interface ContentHandler

Throws:

SAXException

ignorableWhitespace

public void ignorableWhitespace(char[] ch,
                                int start,
                                int length)
                         throws SAXException

Specified by:

ignorableWhitespace in interface ContentHandler

Throws:

SAXException

startPrefixMapping

public void startPrefixMapping(String prefix,
                               String uri)
                        throws SAXException

Specified by:

startPrefixMapping in interface ContentHandler

Throws:

SAXException

endPrefixMapping

public void endPrefixMapping(String prefix)
                      throws SAXException

Specified by:

endPrefixMapping in interface ContentHandler

Throws:

SAXException

skippedEntity

public void skippedEntity(String name)
                   throws SAXException

Specified by:

skippedEntity in interface ContentHandler

Throws:

SAXException

processingInstruction

public void processingInstruction(String target,
                                  String data)
                           throws SAXException

Specified by:

processingInstruction in interface ContentHandler

Throws:

SAXException