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Java Source Code / Java Documentation » XML » XPath Saxon » net.sf.saxon.pull 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   net.sf.saxon.pull.PullFilter
      net.sf.saxon.pull.PullNamespaceReducer

PullNamespaceReducer
public class PullNamespaceReducer extends PullFilter implements NamespaceResolver(Code)
PullNamespaceReducer is a PullFilter responsible for removing duplicate namespace declarations. It also performs namespace fixup: that is, it ensures that the namespaces used in element and attribute names are all declared.

This class is derived from, and contains much common code with, the NamespaceReducer in the push pipeline. (In the push version, however, namespace fixup is not performed by the NamespaceReducer, but by the ComplexContentOutputter).


See Also:   net.sf.saxon.event.NamespaceReducer



Constructor Summary
public  PullNamespaceReducer(PullProvider base)
    

Method Summary
public  voidendElement()
     endElement: Discard the namespaces declared on this element.
public  AttributeCollectiongetAttributes()
     Get the attributes associated with the current element.
public  intgetNameCode()
     Get the nameCode identifying the name of the current node.
public  NamespaceDeclarationsgetNamespaceDeclarations()
     Get the namespace declarations associated with the current element.
protected  shortgetURICode(short prefixCode)
     Get the URI code corresponding to a given prefix code, by searching the in-scope namespaces.
public  StringgetURIForPrefix(String prefix, boolean useDefault)
     Get the namespace URI corresponding to a given prefix.
public  IteratoriteratePrefixes()
     Get an iterator over all the prefixes declared in this namespace context.
public  intnext()
     next(): handle next event.


Constructor Detail
PullNamespaceReducer
public PullNamespaceReducer(PullProvider base)(Code)




Method Detail
endElement
public void endElement() throws XPathException(Code)
endElement: Discard the namespaces declared on this element.



getAttributes
public AttributeCollection getAttributes() throws XPathException(Code)
Get the attributes associated with the current element. This method must be called only after a START_ELEMENT event has been notified. The contents of the returned AttributeCollection are guaranteed to remain unchanged until the next START_ELEMENT event, but may be modified thereafter. The object should not be modified by the client.

Attributes may be read before or after reading the namespaces of an element, but must not be read after the first child node has been read, or after calling one of the methods skipToEnd(), getStringValue(), or getTypedValue().

an AttributeCollection representing the attributes of the elementthat has just been notified.



getNameCode
public int getNameCode()(Code)
Get the nameCode identifying the name of the current node. This method can be used after the PullNamespaceReducer.START_ELEMENT , PullNamespaceReducer.PROCESSING_INSTRUCTION , PullNamespaceReducer.ATTRIBUTE , or PullNamespaceReducer.NAMESPACE events. With some PullProvider implementations, but not this one, it can also be used after PullNamespaceReducer.END_ELEMENT : a client that requires the information at that point (for example, to do serialization) should insert an ElementNameTracker into the pipeline. If called at other times, the result is undefined and may result in an IllegalStateException. If called when the current node is an unnamed namespace node (a node representing the default namespace) the returned value is -1. the nameCode. The nameCode can be used to obtain the prefix, local name,and namespace URI from the name pool.



getNamespaceDeclarations
public NamespaceDeclarations getNamespaceDeclarations() throws XPathException(Code)
Get the namespace declarations associated with the current element. This method must be called only after a START_ELEMENT event has been notified. In the case of a top-level START_ELEMENT event (that is, an element that either has no parent node, or whose parent is not included in the sequence being read), the NamespaceDeclarations object returned will contain a namespace declaration for each namespace that is in-scope for this element node. In the case of a non-top-level element, the NamespaceDeclarations will contain a set of namespace declarations and undeclarations, representing the differences between this element and its parent.

It is permissible for this method to return namespace declarations that are redundant.

The NamespaceDeclarations object is guaranteed to remain unchanged until the next START_ELEMENT event, but may then be overwritten. The object should not be modified by the client.

Namespaces may be read before or after reading the attributes of an element, but must not be read after the first child node has been read, or after calling one of the methods skipToEnd(), getStringValue(), or getTypedValue().

*



getURICode
protected short getURICode(short prefixCode)(Code)
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 the 16-bit URI code, or -1 if the prefix is not found



getURIForPrefix
public String getURIForPrefix(String prefix, boolean useDefault)(Code)
Get the namespace URI corresponding to a given prefix. Return null if the prefix is not in scope.
Parameters:
  prefix - the namespace prefix
Parameters:
  useDefault - true if the default namespace is to be used when theprefix is "" the uri for the namespace, or null if the prefix is not in scope



iteratePrefixes
public Iterator iteratePrefixes()(Code)
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



next
public int next() throws XPathException(Code)
next(): handle next event. The START_ELEMENT event removes redundant namespace declarations, and possibly adds an xmlns="" undeclaration.



Fields inherited from net.sf.saxon.pull.PullFilter
protected int currentEvent(Code)(Java Doc)

Methods inherited from net.sf.saxon.pull.PullFilter
public void close()(Code)(Java Doc)
public int current()(Code)(Java Doc)
public AtomicValue getAtomicValue()(Code)(Java Doc)
public AttributeCollection getAttributes() throws XPathException(Code)(Java Doc)
public int getFingerprint()(Code)(Java Doc)
public int getNameCode()(Code)(Java Doc)
final public NamePool getNamePool()(Code)(Java Doc)
public NamespaceDeclarations getNamespaceDeclarations() throws XPathException(Code)(Java Doc)
public PipelineConfiguration getPipelineConfiguration()(Code)(Java Doc)
public SourceLocator getSourceLocator()(Code)(Java Doc)
public CharSequence getStringValue() throws XPathException(Code)(Java Doc)
public int getTypeAnnotation()(Code)(Java Doc)
public PullProvider getUnderlyingProvider()(Code)(Java Doc)
public int next() throws XPathException(Code)(Java Doc)
public void setPipelineConfiguration(PipelineConfiguration pipe)(Code)(Java Doc)
public int skipToMatchingEnd() throws XPathException(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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