Package eu.bandm.tools.util2

Class NamespaceEmbedder

java.lang.Object

eu.bandm.tools.util.ContentProxy

eu.bandm.tools.util2.NamespaceEmbedder

All Implemented Interfaces:

ContentHandler

public class NamespaceEmbedder
extends ContentProxy

Converts name space related information: (a) prefix mapping commands into pseudo-attributes, and (b) uri/localname sax events into qName sax events. This yields a "not-namespace-aware" format of the document.
The SAX event stream reaching this api must adhere to the following criteria

• All names are by "uri" and "localname", --- the "qname" field is ignored.
• All startPrefixMapping(String, String) and endPrefixMapping(String) calls are properly nested, ...
• and in sync with the scopes, as defined by the carrying elements.
• The prefix mappings are FREE of NESTED HOMONYMS (ie. the same prefix re-used for different uris, implying shadowing). Non-overlapping homonyms are permitted.

Cf. the SAX info at sax project api
The namespace uri "http://www.w3.org/XML/1998/namespace" is (a) bound to the prefix "xml:"; (b) it may be declared, but (c) it is not required to be declared. (d) This namespace name may not be bound to a different prefix, and (e) the prefix "xml:" may not be bound to a different namespace name. [NS in XML:3, last paras].

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected class	NamespaceEmbedder.Pref

Field Summary

Fields

Modifier and Type	Field	Description
protected Map<String,String>	newPrefices
protected Map<String,String>	prefix2uri	all currently mapped prefices, INPUT side.
protected Map<String,NamespaceEmbedder.Pref>	uri2prefix	all currently mapped uris, INPUT side.

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

out

Constructor Summary

Constructors

Constructor	Description
NamespaceEmbedder(ContentHandler out)

Method Summary

Modifier and Type	Method	Description
void	endElement(String uri, String localName, String qName)
void	endPrefixMapping(String prefix)
protected void	error(String text)
protected void	homonymError(String prefix, String olduri, String newuri)
protected String	makeQname(String uri, String localname, boolean isAttribute, boolean isClose)
void	startElement(String uri, String localName, String qName, Attributes attrs)
void	startPrefixMapping(String prefix, String uri)	Establishes explicitly a relation from an uri to a (currently unused!) prefix.

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

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

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

newPrefices

protected Map<String,String> newPrefices

prefix2uri

protected Map<String,String> prefix2uri

all currently mapped prefices, INPUT side.

uri2prefix

protected Map<String,NamespaceEmbedder.Pref> uri2prefix

all currently mapped uris, INPUT side.

Constructor Details

NamespaceEmbedder

public NamespaceEmbedder(ContentHandler out)

Method Details

error

protected void error(String text)

homonymError

protected void homonymError(String prefix,
 String olduri,
 String newuri)

makeQname

protected String makeQname(String uri,
 String localname,
 boolean isAttribute,
 boolean isClose)

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

startElement

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

Specified by:

startElement in interface ContentHandler

Overrides:

startElement in class ContentProxy

Throws:

SAXException

startPrefixMapping

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

Establishes explicitly a relation from an uri to a (currently unused!) prefix.
Prefix == "" means assignment to the "default namespace"
Uri == "" means refering to the non-name-space
uri=="" && prefix!="" is an error.

Specified by:

startPrefixMapping in interface ContentHandler

Overrides:

startPrefixMapping in class ContentProxy

Throws:

SAXException

endPrefixMapping

public void endPrefixMapping(String prefix)
                      throws SAXException

Specified by:

endPrefixMapping in interface ContentHandler

Overrides:

endPrefixMapping in class ContentProxy

Throws:

SAXException