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Summary: Nested | Field | Method | Constr | Detail: Nested | Field | Method | Constr |
java.lang.Object
net.sf.saxon.pull.PullFilter
net.sf.saxon.pull.PullNamespaceReducer
NamespaceReducer
Field Summary |
Fields inherited from class net.sf.saxon.pull.PullFilter | |
currentEvent |
Fields inherited from interface net.sf.saxon.pull.PullProvider | |
ATOMIC_VALUE , ATTRIBUTE , COMMENT , END_DOCUMENT , END_ELEMENT , END_OF_INPUT , NAMESPACE , PROCESSING_INSTRUCTION , START_DOCUMENT , START_ELEMENT , START_OF_INPUT , TEXT |
Constructor Summary | |
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Method Summary | |
void |
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AttributeCollection |
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int |
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NamespaceDeclarations |
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protected short |
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String |
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Iterator |
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int |
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Methods inherited from class net.sf.saxon.pull.PullFilter | |
close , current , getAtomicValue , getAttributes , getFingerprint , getNameCode , getNamePool , getNamespaceDeclarations , getPipelineConfiguration , getSourceLocator , getStringValue , getTypeAnnotation , getUnderlyingProvider , getUnparsedEntities , next , setPipelineConfiguration , skipToMatchingEnd |
public PullNamespaceReducer(PullProvider base)
Create a namespace reducer for a pull pipeline
- Parameters:
base
- the next stage in the pipeline, from which events are read
public void endElement() throws XPathException
endElement: Discard the namespaces declared on this element. Note, however, that for the benefit of PullToStax, the namespaces that go out of scope on this endElement are available so long as the endElement is the current event
public AttributeCollection getAttributes() throws XPathException
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().
- Specified by:
- getAttributes in interface PullProvider
- Overrides:
- getAttributes in interface PullFilter
- Returns:
- an AttributeCollection representing the attributes of the element that has just been notified.
public int getNameCode()
Get the nameCode identifying the name of the current node. This method can be used after thePullProvider.START_ELEMENT
,PullProvider.PROCESSING_INSTRUCTION
,PullProvider.ATTRIBUTE
, orPullProvider.NAMESPACE
events. With some PullProvider implementations, including this one, it can also be used afterPullProvider.END_ELEMENT
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.
- Specified by:
- getNameCode in interface PullProvider
- Overrides:
- getNameCode in interface PullFilter
- Returns:
- the nameCode. The nameCode can be used to obtain the prefix, local name, and namespace URI from the name pool.
public NamespaceDeclarations getNamespaceDeclarations() throws XPathException
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. This class extends the semantics of the PullProvider interface by allowing this method to be called also after an END_ELEMENT event. This is to support PullToStax, which requires this functionality. In this situation it returns the namespaces declared on the startElement associated with the element that has just ended. 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().*
- Specified by:
- getNamespaceDeclarations in interface PullProvider
- Overrides:
- getNamespaceDeclarations in interface PullFilter
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.
- Specified by:
- getURIForPrefix in interface NamespaceResolver
- Parameters:
prefix
- the namespace prefixuseDefault
- 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
- Specified by:
- iteratePrefixes in interface NamespaceResolver
public int next() throws XPathException
next(): handle next event. The START_ELEMENT event removes redundant namespace declarations, and possibly adds an xmlns="" undeclaration.
- Specified by:
- next in interface PullProvider
- Overrides:
- next in interface PullFilter