net.sf.saxon.tree.linked

Class LinkedTreeBuilder

java.lang.Object

net.sf.saxon.event.Builder

net.sf.saxon.tree.linked.LinkedTreeBuilder

All Implemented Interfaces:

javax.xml.transform.Result, Receiver

public class LinkedTreeBuilder
extends Builder

The LinkedTreeBuilder class is responsible for taking a stream of Receiver events and constructing a Document tree using the linked tree implementation.

Author:

Michael H. Kay

Field Summary

Fields inherited from class net.sf.saxon.event.Builder

AXIOM_TREE, baseURI, config, currentRoot, DOMINO_TREE, JDOM_TREE, JDOM2_TREE, lineNumbering, LINKED_TREE, MUTABLE_LINKED_TREE, namePool, open, pipe, started, systemId, timing, TINY_TREE, TINY_TREE_CONDENSED, uniformBaseURI, UNSPECIFIED_TREE_MODEL, useEventLocation

Fields inherited from interface javax.xml.transform.Result

PI_DISABLE_OUTPUT_ESCAPING, PI_ENABLE_OUTPUT_ESCAPING

Constructor Summary

Constructors

Constructor and Description
LinkedTreeBuilder(PipelineConfiguration pipe) Create a Builder and initialise variables
LinkedTreeBuilder(PipelineConfiguration pipe, boolean mutable) Create a Builder and initialise variables

Method Summary

Modifier and Type	Method and Description
void	characters(java.lang.CharSequence chars, Location locationId, int properties) Notify a text node.
void	close() Close the stream of Receiver events
void	comment(java.lang.CharSequence chars, Location locationId, int properties) Notify a comment
void	endDocument() Notify the end of the document
void	endElement() Notify the end of an element
BuilderMonitor	getBuilderMonitor() Get a builder monitor for this builder.
NodeImpl	getCurrentLeafNode() Get the current text, comment, or processing instruction node
ParentNodeImpl	getCurrentParentNode() Get the current document or element node
NodeInfo	getCurrentRoot() Get the current root node.
void	graftElement(ElementImpl element) graftElement() allows an element node to be transferred from one tree to another.
void	open() Open the stream of Receiver events
void	processingInstruction(java.lang.String name, java.lang.CharSequence remainder, Location locationId, int properties) Notify a processing instruction
void	reset() Reset the builder to its initial state.
void	setAllocateSequenceNumbers(boolean allocate) Set whether the builder should allocate sequence numbers to elements as they are added to the tree.
void	setNodeFactory(NodeFactory factory) Set the Node Factory to use.
void	setUnparsedEntity(java.lang.String name, java.lang.String uri, java.lang.String publicId) Set an unparsed entity URI for the document
void	startDocument(int properties) Start of a document node.
void	startElement(NodeName elemName, SchemaType type, AttributeMap suppliedAttributes, NamespaceMap namespaces, Location location, int properties) Notify the start of an element

Methods inherited from class net.sf.saxon.event.Builder

getBaseURI, getConfiguration, getPipelineConfiguration, getSystemId, isTiming, isUseEventLocation, setBaseURI, setLineNumbering, setPipelineConfiguration, setSystemId, setTiming, setUseEventLocation, usesTypeAnnotations

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface net.sf.saxon.event.Receiver

append, append, handlesAppend

Constructor Detail

LinkedTreeBuilder

public LinkedTreeBuilder(PipelineConfiguration pipe)

Create a Builder and initialise variables

Parameters:

pipe - the pipeline configuration

LinkedTreeBuilder

public LinkedTreeBuilder(PipelineConfiguration pipe,
                         boolean mutable)

Create a Builder and initialise variables

Parameters:

pipe - the pipeline configuration

mutable - set to true if the tree is to be mutable

Method Detail

getCurrentRoot

public NodeInfo getCurrentRoot()

Get the current root node. This will normally be a document node, but if the root of the tree is an element node, it can be an element.

Overrides:

getCurrentRoot in class Builder

Returns:

the root of the tree that is currently being built, or that has been most recently built using this builder

reset

public void reset()

Description copied from class: Builder

Reset the builder to its initial state. The most important effect of calling this method (implemented in subclasses) is to release any links to the constructed document tree, allowing the memory occupied by the tree to released by the garbage collector even if the Builder is still in memory. This can happen because the Builder is referenced from a parser in the Configuration's parser pool.

Overrides:

reset in class Builder

setAllocateSequenceNumbers

public void setAllocateSequenceNumbers(boolean allocate)

Set whether the builder should allocate sequence numbers to elements as they are added to the tree. This is normally done, because it provides a quick way of comparing document order. But nodes added using XQuery update are not sequence-numbered.

Parameters:

allocate - true if sequence numbers are to be allocated

setNodeFactory

public void setNodeFactory(NodeFactory factory)

Set the Node Factory to use. If none is specified, the Builder uses its own.

Parameters:

factory - the node factory to be used. This allows custom objects to be used to represent the elements in the tree.

open

public void open()

Open the stream of Receiver events

Specified by:

open in interface Receiver

Overrides:

open in class Builder

startDocument

public void startDocument(int properties)
                   throws XPathException

Start of a document node. This event is ignored: we simply add the contained elements to the current document

Parameters:

properties - properties of the document node

Throws:

XPathException - if an error occurs

endDocument

public void endDocument()
                 throws XPathException

Notify the end of the document

Throws:

XPathException - if an error occurs

close

public void close()
           throws XPathException

Close the stream of Receiver events

Specified by:

close in interface Receiver

Overrides:

close in class Builder

Throws:

XPathException - if an error occurs

startElement

public void startElement(NodeName elemName,
                         SchemaType type,
                         AttributeMap suppliedAttributes,
                         NamespaceMap namespaces,
                         Location location,
                         int properties)
                  throws XPathException

Notify the start of an element

Parameters:

elemName - the name of the element.

type - the type annotation of the element.

suppliedAttributes - the attributes of this element

namespaces - the in-scope namespaces of this element: generally this is all the in-scope namespaces, without relying on inheriting namespaces from parent elements

location - an object providing information about the module, line, and column where the node originated

properties - bit-significant properties of the element node. If there are no relevant properties, zero is supplied. The definitions of the bits are in class ReceiverOption

Throws:

XPathException - if an error occurs

endElement

public void endElement()
                throws XPathException

Notify the end of an element

Throws:

XPathException - if an error occurs

characters

public void characters(java.lang.CharSequence chars,
                       Location locationId,
                       int properties)
                throws XPathException

Notify a text node. Adjacent text nodes must have already been merged

Parameters:

chars - The characters

locationId - provides information such as line number and system ID.

properties - Bit significant value. The following bits are defined:

DISABLE_ESCAPING

Disable escaping for this text node

USE_CDATA

Output as a CDATA section

Throws:

XPathException - if an error occurs

processingInstruction

public void processingInstruction(java.lang.String name,
                                  java.lang.CharSequence remainder,
                                  Location locationId,
                                  int properties)

Notify a processing instruction

Parameters:

name - The PI name. This must be a legal name (it will not be checked).

remainder - The data portion of the processing instruction

locationId - provides information such as line number and system ID.

properties - Additional information about the PI.

comment

public void comment(java.lang.CharSequence chars,
                    Location locationId,
                    int properties)
             throws XPathException

Notify a comment

Parameters:

chars - The content of the comment

locationId - provides information such as line number and system ID.

properties - Additional information about the comment.

Throws:

XPathException - if an error occurs

getCurrentParentNode

public ParentNodeImpl getCurrentParentNode()

Get the current document or element node

Returns:

the most recently started document or element node (to which children are currently being added) In the case of elements, this is only available after startContent() has been called

getCurrentLeafNode

public NodeImpl getCurrentLeafNode()

Get the current text, comment, or processing instruction node

Returns:

if any text, comment, or processing instruction nodes have been added to the current parent node, then return that text, comment, or PI; otherwise return null

graftElement

public void graftElement(ElementImpl element)

graftElement() allows an element node to be transferred from one tree to another. This is a dangerous internal interface which is used only to contruct a stylesheet tree from a stylesheet using the "literal result element as stylesheet" syntax. The supplied element is grafted onto the current element as its only child.

Parameters:

element - the element to be grafted in as a new child.

setUnparsedEntity

public void setUnparsedEntity(java.lang.String name,
                              java.lang.String uri,
                              java.lang.String publicId)

Set an unparsed entity URI for the document

Parameters:

name - The name of the unparsed entity

uri - The system identifier of the unparsed entity

publicId - The identifier of the unparsed entity

getBuilderMonitor

public BuilderMonitor getBuilderMonitor()

Get a builder monitor for this builder. This must be called immediately after opening the builder, and all events to the builder must thenceforth be sent via the BuilderMonitor.

Overrides:

getBuilderMonitor in class Builder

Returns:

a new BuilderMonitor appropriate to this kind of Builder; or null if the Builder does not provide this service