public class TinyTreeWalker extends java.lang.Object implements PullProvider, Location
TreeWalker
class, but is
specialized to exploit the TinyTree data structure: in particular, it never
materializes any Node objects.ATOMIC_VALUE, ATTRIBUTE, COMMENT, END_DOCUMENT, END_ELEMENT, END_OF_INPUT, NAMESPACE, PROCESSING_INSTRUCTION, START_DOCUMENT, START_ELEMENT, START_OF_INPUT, TEXT
Constructor and Description |
---|
TinyTreeWalker(TinyNodeImpl startNode)
Create a TinyTreeWalker to return events associated with a tree or subtree
|
Modifier and Type | Method and Description |
---|---|
void |
close()
Close the event reader.
|
int |
current()
Get the event most recently returned by next(), or by other calls that change
the position, for example getStringValue() and skipToMatchingEnd().
|
AtomicValue |
getAtomicValue()
Get an atomic value.
|
AttributeCollection |
getAttributes()
Get the attributes associated with the current element.
|
int |
getColumnNumber()
Return the character position where the current document event ends.
|
int |
getLineNumber()
Return the line number where the current document event ends.
|
NamePool |
getNamePool()
Get the namePool used to lookup all name codes and namespace codes
|
NamespaceBinding[] |
getNamespaceDeclarations()
Get the namespace declarations associated with the current element.
|
NodeName |
getNodeName()
Get a nodeName identifying the name of the current node.
|
PipelineConfiguration |
getPipelineConfiguration()
Get configuration information.
|
java.lang.String |
getPublicId()
Return the public identifier for the current document event.
|
SchemaType |
getSchemaType()
Get the type annotation of the current attribute or element node, or atomic value.
|
Location |
getSourceLocator()
Get the location of the current event.
|
java.lang.CharSequence |
getStringValue()
Get the string value of the current attribute, text node, processing-instruction,
or atomic value.
|
java.lang.String |
getSystemId()
Return the system identifier for the current document event.
|
java.util.List<UnparsedEntity> |
getUnparsedEntities()
Get a list of unparsed entities.
|
int |
next()
Get the next event
|
Location |
saveLocation()
Get an immutable copy of this Location object.
|
void |
setPipelineConfiguration(PipelineConfiguration pipe)
Set configuration information.
|
int |
skipToMatchingEnd()
Skip the current subtree.
|
public TinyTreeWalker(TinyNodeImpl startNode)
startNode
- the root of the tree or subtree. Must be a document, element, text,
comment, or processing-instruction node.java.lang.IllegalArgumentException
- if the start node is an attribute or namespace node.public void setPipelineConfiguration(PipelineConfiguration pipe)
setPipelineConfiguration
in interface PullProvider
pipe
- the pipeline configurationpublic PipelineConfiguration getPipelineConfiguration()
getPipelineConfiguration
in interface PullProvider
public int next() throws XPathException
next
in interface PullProvider
PullProvider.END_OF_INPUT
is returned if there are no more events to return.XPathException
- if a dynamic error occurspublic int current()
current
in interface PullProvider
public AttributeCollection getAttributes() throws XPathException
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().
getAttributes
in interface PullProvider
XPathException
- if a dynamic error occurspublic NamespaceBinding[] getNamespaceDeclarations() throws XPathException
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().
*getNamespaceDeclarations
in interface PullProvider
XPathException
- if a dynamic error occurspublic int skipToMatchingEnd() throws XPathException
skipToMatchingEnd
in interface PullProvider
XPathException
- if a dynamic error occurspublic void close()
PullProvider.END_OF_INPUT
has
been reported, but it is recommended to close it if reading terminates
prematurely. Once an event reader has been closed, the effect of further
calls on next() is undefined.close
in interface PullProvider
public NamePool getNamePool()
public NodeName getNodeName()
PullProvider.START_ELEMENT
, PullProvider.PROCESSING_INSTRUCTION
,
PullProvider.ATTRIBUTE
, or PullProvider.NAMESPACE
events. With some PullProvider implementations,
including this one, it can also be used after PullProvider.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 null.getNodeName
in interface PullProvider
public java.lang.CharSequence getStringValue() throws XPathException
PullProvider.START_ELEMENT
, PullProvider.TEXT
,
PullProvider.PROCESSING_INSTRUCTION
, or PullProvider.ATOMIC_VALUE
, the result is undefined.getStringValue
in interface PullProvider
XPathException
- if a dynamic error occurspublic AtomicValue getAtomicValue()
getAtomicValue
in interface PullProvider
public SchemaType getSchemaType()
getSchemaType
in interface PullProvider
SchemaType
by access to the Configuration.public Location getSourceLocator()
getSourceLocator
in interface PullProvider
public java.lang.String getPublicId()
The return value is the public identifier of the document entity or of the external parsed entity in which the markup that triggered the event appears.
getPublicId
in interface javax.xml.transform.SourceLocator
getPublicId
in interface Location
getPublicId
in interface org.xml.sax.Locator
getSystemId()
public java.lang.String getSystemId()
The return value is the system identifier of the document entity or of the external parsed entity in which the markup that triggered the event appears.
If the system identifier is a URL, the parser must resolve it fully before passing it to the application.
getSystemId
in interface javax.xml.transform.SourceLocator
getSystemId
in interface Location
getSystemId
in interface org.xml.sax.Locator
getPublicId()
public int getLineNumber()
Warning: The return value from the method is intended only as an approximation for the sake of error reporting; it is not intended to provide sufficient information to edit the character content of the original XML document.
The return value is an approximation of the line number in the document entity or external parsed entity where the markup that triggered the event appears.
getLineNumber
in interface javax.xml.transform.SourceLocator
getLineNumber
in interface Location
getLineNumber
in interface org.xml.sax.Locator
getColumnNumber()
public int getColumnNumber()
Warning: The return value from the method is intended only as an approximation for the sake of error reporting; it is not intended to provide sufficient information to edit the character content of the original XML document.
The return value is an approximation of the column number in the document entity or external parsed entity where the markup that triggered the event appears.
getColumnNumber
in interface javax.xml.transform.SourceLocator
getColumnNumber
in interface Location
getColumnNumber
in interface org.xml.sax.Locator
getLineNumber()
public Location saveLocation()
saveLocation
in interface Location
public java.util.List<UnparsedEntity> getUnparsedEntities()
getUnparsedEntities
in interface PullProvider
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