net.sf.saxon.event
Class NamespaceReducer
public
class
NamespaceReducer
extends ProxyReceiver
implements NamespaceResolver
NamespaceReducer is a ProxyReceiver responsible for removing duplicate namespace
declarations. It also ensures that an xmlns="" undeclaration is output when
necessary. Used on its own, the NamespaceReducer simply eliminates unwanted
namespace declarations. It can also be subclassed, in which case the subclass
can use the services of the NamespaceReducer to resolve QNames.
The NamespaceReducer also validates namespace-sensitive content.
Method Summary |
void | endElement()
endElement: Discard the namespaces declared on this element. |
protected short | getURICode(short prefixCode)
Get the URI code corresponding to a given prefix code, by searching the
in-scope namespaces. |
String | getURIForPrefix(String prefix, boolean useDefault)
Get the namespace URI corresponding to a given prefix. |
Iterator | iteratePrefixes()
Get an iterator over all the prefixes declared in this namespace context. |
void | namespace(int namespaceCode, int properties) |
void | startContent()
startContent: Add any namespace undeclarations needed to stop
namespaces being inherited from parent elements |
void | startElement(int nameCode, int typeCode, int locationId, int properties)
startElement. |
public void endElement()
endElement: Discard the namespaces declared on this element.
protected short getURICode(short prefixCode)
Get the URI code corresponding to a given prefix code, by searching the
in-scope namespaces. This is a service provided to subclasses.
Parameters: prefixCode the 16-bit prefix code required
Returns: the 16-bit URI code, or -1 if the prefix is not found
public String getURIForPrefix(String prefix, boolean useDefault)
Get the namespace URI corresponding to a given prefix. Return null
if the prefix is not in scope.
Parameters: prefix the namespace prefix useDefault true if the default namespace is to be used when the
prefix is ""
Returns: the uri for the namespace, or null if the prefix is not in scope
public Iterator iteratePrefixes()
Get an iterator over all the prefixes declared in this namespace context. This will include
the default namespace (prefix="") and the XML namespace where appropriate
public void namespace(int namespaceCode, int properties)
public void startContent()
startContent: Add any namespace undeclarations needed to stop
namespaces being inherited from parent elements
public void startElement(int nameCode, int typeCode, int locationId, int properties)
startElement. This call removes redundant namespace declarations, and
possibly adds an xmlns="" undeclaration.