FudgeNamespaceContentHandler (Starjava TTOOLS API)

java.lang.Object
- uk.ac.starlink.ttools.votlint.FudgeNamespaceContentHandler

All Implemented Interfaces:

org.xml.sax.ContentHandler
```
public class FudgeNamespaceContentHandler
extends java.lang.Object
implements org.xml.sax.ContentHandler
```
This class provides a hack so that XSD validation can work even when the wrong namespace is declared in the source document. The point of this is that if the document has made a small namespacing error, schema validation by default will simply refuse to recognise any of the elements and provide no further validation reporting. This class hacks the SAX event stream to its downstream client so that if no namespace declaration has been received in the expected namespace, the default namespace is declared as the expected one. If the expected namespace is declared explicitly, this class makes no change to downstream SAX events.
This is not very respectable, but will have the desired effect for most VOTable documents (which do not in any case make much use of namespacing).

Since:

22 Nov 2012

Author:

Mark Taylor

Constructor Summary

Constructors
Constructor	Description
`FudgeNamespaceContentHandler(org.xml.sax.ContentHandler base, java.lang.String tagName, java.lang.String ns)`	Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`characters(char[] ch, int start, int length)`
`void`	`endDocument()`
`void`	`endElement(java.lang.String uri, java.lang.String localName, java.lang.String qName)`
`void`	`endPrefixMapping(java.lang.String prefix)`
`void`	`ignorableWhitespace(char[] ch, int start, int length)`
`void`	`processingInstruction(java.lang.String target, java.lang.String data)`
`void`	`setDocumentLocator(org.xml.sax.Locator locator)`
`void`	`skippedEntity(java.lang.String name)`
`void`	`startDocument()`
`void`	`startElement(java.lang.String uri, java.lang.String localName, java.lang.String qName, org.xml.sax.Attributes atts)`
`void`	`startPrefixMapping(java.lang.String prefix, java.lang.String uri)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- FudgeNamespaceContentHandler
```
public FudgeNamespaceContentHandler(org.xml.sax.ContentHandler base,
                                    java.lang.String tagName,
                                    java.lang.String ns)
```
  Constructor.
  
  Parameters:
  
  base - downstream SAX event sink
  
  tagName - name of element within which namespace hacking should take place
  
  ns - namespace to insert

Method Detail

setDocumentLocator
```
public void setDocumentLocator(org.xml.sax.Locator locator)
```
Specified by:

setDocumentLocator in interface org.xml.sax.ContentHandler

startDocument
```
public void startDocument()
                   throws org.xml.sax.SAXException
```
Specified by:

startDocument in interface org.xml.sax.ContentHandler

Throws:

org.xml.sax.SAXException

endDocument
```
public void endDocument()
                 throws org.xml.sax.SAXException
```
Specified by:

endDocument in interface org.xml.sax.ContentHandler

Throws:

org.xml.sax.SAXException

startPrefixMapping

public void startPrefixMapping(java.lang.String prefix,
                               java.lang.String uri)
                        throws org.xml.sax.SAXException

Specified by:: startPrefixMapping in interface org.xml.sax.ContentHandler
Throws:: org.xml.sax.SAXException

endPrefixMapping
```
public void endPrefixMapping(java.lang.String prefix)
                      throws org.xml.sax.SAXException
```
Specified by:

endPrefixMapping in interface org.xml.sax.ContentHandler

Throws:

org.xml.sax.SAXException

startElement

public void startElement(java.lang.String uri,
                         java.lang.String localName,
                         java.lang.String qName,
                         org.xml.sax.Attributes atts)
                  throws org.xml.sax.SAXException

Specified by:: startElement in interface org.xml.sax.ContentHandler
Throws:: org.xml.sax.SAXException

endElement

public void endElement(java.lang.String uri,
                       java.lang.String localName,
                       java.lang.String qName)
                throws org.xml.sax.SAXException

Specified by:: endElement in interface org.xml.sax.ContentHandler
Throws:: org.xml.sax.SAXException

characters

public void characters(char[] ch,
                       int start,
                       int length)
                throws org.xml.sax.SAXException

Specified by:: characters in interface org.xml.sax.ContentHandler
Throws:: org.xml.sax.SAXException

ignorableWhitespace

public void ignorableWhitespace(char[] ch,
                                int start,
                                int length)
                         throws org.xml.sax.SAXException

Specified by:: ignorableWhitespace in interface org.xml.sax.ContentHandler
Throws:: org.xml.sax.SAXException

processingInstruction

public void processingInstruction(java.lang.String target,
                                  java.lang.String data)
                           throws org.xml.sax.SAXException

Specified by:: processingInstruction in interface org.xml.sax.ContentHandler
Throws:: org.xml.sax.SAXException

skippedEntity
```
public void skippedEntity(java.lang.String name)
                   throws org.xml.sax.SAXException
```
Specified by:

skippedEntity in interface org.xml.sax.ContentHandler

Throws:

org.xml.sax.SAXException

Class FudgeNamespaceContentHandler

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

FudgeNamespaceContentHandler

Method Detail

setDocumentLocator

startDocument

endDocument

startPrefixMapping

endPrefixMapping

startElement

endElement

characters

ignorableWhitespace

processingInstruction

skippedEntity