Package eu.bandm.tools.xslt.base

Class ForeignFilter

java.lang.Object

eu.bandm.tools.util.xml.ContentProxy

eu.bandm.tools.xslt.base.ForeignFilter

All Implemented Interfaces:

ContentHandler

public class ForeignFilter
extends ContentProxy

A ContentHandler which suppresses all top-level elementes which are not from the xslt namespace.
This is necessary because the [XSLT 1.0/sect 2.2] says "In addition, the xsl:stylesheet element may contain any element not from the XSLT namespace, provided that the expanded-name of the element has a non-null namespace URI."
Since a tdom model does not support this "lenient" behaviour, this filter can be prepepended if this behaviour is wanted. The second part ("non-null namespace URI.") is not checked, because it does not make any sense.
Assumes that all events are Namespace-Aware, ie. qName is IRRELEVANT!

Field Summary

Fields

Modifier and Type	Field	Description
(package private) final ContentHandler	consumer
(package private) final ContentHandler	disposer
(package private) int	level
protected final MessageReceiver<SimpleMessage<XMLDocumentIdentifier>>	msg

Fields inherited from class eu.bandm.tools.util.xml.ContentProxy

out

Constructor Summary

Constructors

Constructor	Description
ForeignFilter(ContentHandler out, MessageReceiver<SimpleMessage<XMLDocumentIdentifier>> msg)

Method Summary

Modifier and Type	Method	Description
void	endElement(String uri, String localName, String qName)
void	startElement(String uri, String localName, String qName, Attributes attrs)	Start element maintains a state machine for disposing top-level elements not from xslt.

Methods inherited from class eu.bandm.tools.util.xml.ContentProxy

characters, endDocument, endPrefixMapping, ignorableWhitespace, processingInstruction, setDocumentLocator, skippedEntity, startDocument, startPrefixMapping

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.xml.sax.ContentHandler

declaration

Field Details

msg

protected final MessageReceiver<SimpleMessage<XMLDocumentIdentifier>> msg

level

int level

consumer

final ContentHandler consumer

disposer

final ContentHandler disposer

Constructor Details

ForeignFilter

public ForeignFilter(ContentHandler out,
 MessageReceiver<SimpleMessage<XMLDocumentIdentifier>> msg)

Method Details

startElement

public void startElement(String uri,
 String localName,
 String qName,
 Attributes attrs)
                  throws SAXException

Start element maintains a state machine for disposing top-level elements not from xslt.

level = 0 means before start stylesheet
level = 1 means after start stylesheet, before xslt or foreign
level > 1 means IN foreign/xslt
level = 1 again -> listen again (for PIs, etc, and start elements!)

Specified by:

startElement in interface ContentHandler

Overrides:

startElement in class ContentProxy

Throws:

SAXException

endElement

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

Specified by:

endElement in interface ContentHandler

Overrides:

endElement in class ContentProxy

Throws:

SAXException