net.sf.saxon.event
Class NamespaceReducer
- NamespaceResolver, Receiver, Result
public class NamespaceReducer
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.
void | endElement() - endElement: Discard the namespaces declared on this element.
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protected short | getURICode(short prefixCode) - Get the URI code corresponding to a given prefix code, by searching the
in-scope namespaces.
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String | getURIForPrefix(String prefix, boolean useDefault) - Get the namespace URI corresponding to a given prefix.
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Iterator | iteratePrefixes() - Get an iterator over all the prefixes declared in this namespace context.
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void | namespace(int namespaceCode, int properties) - Output a namespace node (binding)
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void | startContent() - startContent: Add any namespace undeclarations needed to stop
namespaces being inherited from parent elements
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void | startElement(int nameCode, int typeCode, int locationId, int properties) - startElement.
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append , attribute , characters , close , comment , endDocument , endElement , getConfiguration , getDocumentLocator , getNamePool , getUnderlyingReceiver , namespace , open , processingInstruction , setPipelineConfiguration , setSystemId , setUnderlyingReceiver , setUnparsedEntity , startContent , startDocument , startElement |
NamespaceReducer
public NamespaceReducer()
Create a NamespaceReducer
NamespaceReducer
public NamespaceReducer(Receiver base)
Create a NamespaceReducer with a given destination Receiver
base
- the Receiver to which events will be passed after namespace reduction
getURICode
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.
prefixCode
- the 16-bit prefix code required
- the 16-bit URI code, or -1 if the prefix is not found
getURIForPrefix
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.
- getURIForPrefix in interface NamespaceResolver
prefix
- the namespace prefixuseDefault
- true if the default namespace is to be used when the
prefix is ""
- the uri for the namespace, or null if the prefix is not in scope
iteratePrefixes
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
- iteratePrefixes in interface NamespaceResolver
namespace
public void namespace(int namespaceCode,
int properties)
throws XPathException
Output a namespace node (binding)
- namespace in interface Receiver
- namespace in interface ProxyReceiver
namespaceCode
- encapsulates the prefix and URIproperties
- the properties of the namespace binding
startElement
public void startElement(int nameCode,
int typeCode,
int locationId,
int properties)
throws XPathException
startElement. This call removes redundant namespace declarations, and
possibly adds an xmlns="" undeclaration.
- startElement in interface Receiver
- startElement in interface ProxyReceiver