net.sf.saxon.tree.tiny

Class TinyTree

java.lang.Object

net.sf.saxon.tree.tiny.TinyTree

All Implemented Interfaces:

LocationProvider

public final class TinyTree
extends Object
implements LocationProvider

A data structure to hold the contents of a tree. As the name implies, this implementation of the data model is optimized for size, and for speed of creation: it minimizes the number of Java objects used.

It can be used to represent a tree that is rooted at a document node, or one that is rooted at an element node.

Field Summary

Fields

Modifier and Type	Field and Description
protected int[]	alpha
protected int[]	attCode
protected int[]	attParent
protected int[]	attTypeCode
protected AtomicSequence[]	attTypedValue
protected CharSequence[]	attValue
protected int[]	beta
protected AppendableCharSequence	charBuffer
protected FastStringBuffer	commentBuffer
protected short[]	depth
protected long	documentNumber
protected int[]	nameCode
protected NamespaceBinding[]	namespaceBinding
protected int[]	namespaceParent
protected int[]	next
byte[]	nodeKind
protected int	numberOfAttributes
protected int	numberOfNamespaces
protected int	numberOfNodes
protected int[]	prior
protected int	rootIndexUsed
static int	TYPECODE_IDREF
protected int[]	typeCodeArray
protected AtomicSequence[]	typedValueArray
protected boolean	usesNamespaces

Constructor Summary

Constructors

Constructor and Description
TinyTree(Configuration config, Statistics statistics) Create a tree with a specified initial size

Method Summary

Methods

Modifier and Type	Method and Description
int	addTextNodeCopy(int depth, int existingNodeNr) Create a new text node that is a copy of an existing text node
void	diagnosticDump() Produce diagnostic print of main tree arrays
static void	diagnosticDump(NodeInfo node) Create diagnostic dump of the tree containing a particular node.
int[]	getAlphaArray() Get the array holding alpha information
int[]	getAttributeNameCodeArray() Get the array used to hold the name codes of all attributes
int[]	getAttributeParentArray() Get the array used to hold the parent pointers of all attributes
int[]	getAttributeTypeCodeArray() Get the array used to hold the type codes of all attributes
CharSequence[]	getAttributeValueArray() Get the array used to hold the name codes of all attributes
int[]	getBetaArray() Get the array holding beta information
AppendableCharSequence	getCharacterBuffer() Get the character buffer used to hold all the text data of the document
int	getColumnNumber(int sequence) Get the column number for a node.
CharSequence	getCommentBuffer() Get the character buffer used to hold all the comment data of the document
Configuration	getConfiguration() Get the configuration previously set using setConfiguration
long	getDocumentNumber() Get the document number (actually, the tree number)
int	getLineNumber(int sequence) Get the line number for a node.
int	getNameCode(int nodeNr) Get the nameCode for a given node, which must be a document, element, text, comment, or processing instruction node
int[]	getNameCodeArray() Get the array holding node name information
NamePool	getNamePool() Get the name pool used for the names in this document
NamespaceBinding[]	getNamespaceBindings() Get the array used to hold the namespace declarations
int[]	getNamespaceParentArray() Get the array used to hold the parent pointers of all namespace declarations
int[]	getNextPointerArray() Get the array holding next-sibling pointers
TinyNodeImpl	getNode(int nr) Get the node at a given position in the tree
short[]	getNodeDepthArray() Get the array holding node depth information
int	getNodeKind(int nodeNr) Get the node kind of a given node, which must be a document, element, text, comment, or processing instruction node
byte[]	getNodeKindArray() Get the array holding node kind information
int	getNumberOfAttributes() Get the number of attributes in the tree
int	getNumberOfNamespaces() Get the number of namespace declarations in the tree
int	getNumberOfNodes() Get the number of nodes in the tree, excluding attributes and namespace nodes
String	getSystemId(int seq) Get the system id of an element in the document
int	getTypeAnnotation(int nodeNr) Get the type annotation of a node.
int[]	getTypeCodeArray() Get the array holding node type information
AtomicSequence	getTypedValueOfAttribute(net.sf.saxon.tree.tiny.TinyAttributeImpl att, int nodeNr) Get the typed value of an attribute node.
AtomicSequence	getTypedValueOfElement(int nodeNr) Get the type value of an element node, given only the node number
AtomicSequence	getTypedValueOfElement(TinyElementImpl element) Get the typed value of an element node.
void	indexIDElement(NodeInfo root, int nodeNr) Index an element of type xs:ID
boolean	isIdAttribute(int nr) Determine whether an attribute is an IDREF/IDREFS attribute.
boolean	isIdElement(int nr) Ask whether an element is an ID element.
boolean	isIdrefAttribute(int nr) Determine whether an attribute is an IDREF/IDREFS attribute.
boolean	isIdrefElement(int nr) Ask whether an element is an IDREF/IDREFS element.
boolean	isNilled(int nodeNr) Ask whether a given node is nilled
void	setConfiguration(Configuration config) Set the Configuration that contains this document
void	setLineNumbering() Set line numbering on
void	showSize() Output a statistical summary to System.err

Methods inherited from class java.lang.Object

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

Field Detail

documentNumber

protected long documentNumber

charBuffer

protected AppendableCharSequence charBuffer

commentBuffer

protected FastStringBuffer commentBuffer

numberOfNodes

protected int numberOfNodes

nodeKind

public byte[] nodeKind

depth

protected short[] depth

next

protected int[] next

alpha

protected int[] alpha

beta

protected int[] beta

nameCode

protected int[] nameCode

prior

protected int[] prior

typeCodeArray

protected int[] typeCodeArray

typedValueArray

protected AtomicSequence[] typedValueArray

TYPECODE_IDREF

public static final int TYPECODE_IDREF

See Also:

Constant Field Values

numberOfAttributes

protected int numberOfAttributes

attParent

protected int[] attParent

attCode

protected int[] attCode

attValue

protected CharSequence[] attValue

attTypedValue

protected AtomicSequence[] attTypedValue

attTypeCode

protected int[] attTypeCode

numberOfNamespaces

protected int numberOfNamespaces

namespaceParent

protected int[] namespaceParent

namespaceBinding

protected NamespaceBinding[] namespaceBinding

rootIndexUsed

protected int rootIndexUsed

usesNamespaces

protected boolean usesNamespaces

Constructor Detail

TinyTree

public TinyTree(Configuration config,
        Statistics statistics)

Create a tree with a specified initial size

Parameters:

config - the Saxon configuration

statistics - the size parameters for the tree

Method Detail

setConfiguration

public void setConfiguration(Configuration config)

Set the Configuration that contains this document

Parameters:

config - the Saxon configuration

getConfiguration

public Configuration getConfiguration()

Get the configuration previously set using setConfiguration

Returns:

the Saxon configuration

getNamePool

public NamePool getNamePool()

Get the name pool used for the names in this document

Returns:

the name pool

addTextNodeCopy

public int addTextNodeCopy(int depth,
                  int existingNodeNr)

Create a new text node that is a copy of an existing text node

Parameters:

depth - the depth of the new node

existingNodeNr - the node to be copied

Returns:

the node number of the new node

getTypeAnnotation

public int getTypeAnnotation(int nodeNr)

Get the type annotation of a node. Applies only to document, element, text, processing instruction, and comment nodes.

Parameters:

nodeNr - the node whose type annotation is required

Returns:

the fingerprint of the type annotation for elements and attributes, otherwise undefined.

getTypedValueOfElement

public AtomicSequence getTypedValueOfElement(TinyElementImpl element)
                                      throws XPathException

Get the typed value of an element node.

Parameters:

element - the element node

Returns:

the typed value of the node (a Value whose items are AtomicValue instances)

Throws:

XPathException - if a dynamic error occurs, for example if the node is an element annotated with a type that has element-only content

getTypedValueOfElement

public AtomicSequence getTypedValueOfElement(int nodeNr)
                                      throws XPathException

Get the type value of an element node, given only the node number

Parameters:

nodeNr - the node number of the element node

Returns:

the typed value of the node

Throws:

XPathException - if the eement has no typed value

getTypedValueOfAttribute

public AtomicSequence getTypedValueOfAttribute(net.sf.saxon.tree.tiny.TinyAttributeImpl att,
                                      int nodeNr)
                                        throws XPathException

Get the typed value of an attribute node. This method avoids materializing the attribute node if possible, but uses the attribute node supplied if it already exists.

Parameters:

att - the attribute node if available. If null is supplied, the attribute node will be materialized only if it is needed.

nodeNr - the node number of the attribute node

Returns:

the typed value of the node

Throws:

XPathException - if an error is found

getNodeKind

public int getNodeKind(int nodeNr)

Get the node kind of a given node, which must be a document, element, text, comment, or processing instruction node

Parameters:

nodeNr - the node number

Returns:

the node kind

getNameCode

public int getNameCode(int nodeNr)

Get the nameCode for a given node, which must be a document, element, text, comment, or processing instruction node

Parameters:

nodeNr - the node number

Returns:

the name code

indexIDElement

public void indexIDElement(NodeInfo root,
                  int nodeNr)

Index an element of type xs:ID

Parameters:

root - the root node of the document

nodeNr - the element of type xs:ID

getNode

public final TinyNodeImpl getNode(int nr)

Get the node at a given position in the tree

Parameters:

nr - the node number

Returns:

the node at the given position

isIdAttribute

public boolean isIdAttribute(int nr)

Determine whether an attribute is an IDREF/IDREFS attribute. (The represents the is-idref property in the data model)

Parameters:

nr - the node number of the attribute

Returns:

true if this is an IDREF/IDREFS attribute

isIdrefAttribute

public boolean isIdrefAttribute(int nr)

Determine whether an attribute is an IDREF/IDREFS attribute. (The represents the is-idref property in the data model)

Parameters:

nr - the node number of the attribute

Returns:

true if this is an IDREF/IDREFS attribute

isIdElement

public boolean isIdElement(int nr)

Ask whether an element is an ID element. (The represents the is-id property in the data model)

Parameters:

nr - the element node whose is-idref property is required

Returns:

true if the node has the is-idref property

isIdrefElement

public boolean isIdrefElement(int nr)

Ask whether an element is an IDREF/IDREFS element. (The represents the is-idref property in the data model)

Parameters:

nr - the element node whose is-idref property is required

Returns:

true if the node has the is-idref property

getSystemId

public String getSystemId(int seq)

Get the system id of an element in the document

Specified by:

getSystemId in interface LocationProvider

Parameters:

seq - the node number of the element node

Returns:

the system id (base URI) of the element

setLineNumbering

public void setLineNumbering()

Set line numbering on

getLineNumber

public int getLineNumber(int sequence)

Get the line number for a node.

Specified by:

getLineNumber in interface LocationProvider

Parameters:

sequence - the node number

Returns:

the line number of the node. Return -1 if line numbering is off.

getColumnNumber

public int getColumnNumber(int sequence)

Get the column number for a node.

Specified by:

getColumnNumber in interface LocationProvider

Parameters:

sequence - the node number

Returns:

the line number of the node. Return -1 if line numbering is off.

getDocumentNumber

public long getDocumentNumber()

Get the document number (actually, the tree number)

Returns:

the unique number of this TinyTree structure

isNilled

public boolean isNilled(int nodeNr)

Ask whether a given node is nilled

Parameters:

nodeNr - the node in question (which must be an element node)

Returns:

true if the node has the nilled property

diagnosticDump

public void diagnosticDump()

Produce diagnostic print of main tree arrays

diagnosticDump

public static void diagnosticDump(NodeInfo node)

Create diagnostic dump of the tree containing a particular node. Designed to be called as an extension function for diagnostics.

Parameters:

node - the node in question

showSize

public void showSize()

Output a statistical summary to System.err

getNumberOfNodes

public int getNumberOfNodes()

Get the number of nodes in the tree, excluding attributes and namespace nodes

Returns:

the number of nodes.

getNumberOfAttributes

public int getNumberOfAttributes()

Get the number of attributes in the tree

Returns:

the number of attributes

getNumberOfNamespaces

public int getNumberOfNamespaces()

Get the number of namespace declarations in the tree

Returns:

the number of namespace declarations

getNodeKindArray

public byte[] getNodeKindArray()

Get the array holding node kind information

Returns:

an array of bytes, byte N is the node kind of node number N

getNodeDepthArray

public short[] getNodeDepthArray()

Get the array holding node depth information

Returns:

an array of shorts, byte N is the node depth of node number N

getNameCodeArray

public int[] getNameCodeArray()

Get the array holding node name information

Returns:

an array of integers, integer N is the name code of node number N

getTypeCodeArray

public int[] getTypeCodeArray()

Get the array holding node type information

Returns:

an array of integers, integer N is the type code of node number N

getNextPointerArray

public int[] getNextPointerArray()

Get the array holding next-sibling pointers

Returns:

an array of integers, integer N is the next-sibling pointer for node number N

getAlphaArray

public int[] getAlphaArray()

Get the array holding alpha information

Returns:

an array of integers, whose meaning depends on the node kind. For elements it is a pointer to the first attribute, for text, comment, and processing instruction nodes it is a pointer to the content

getBetaArray

public int[] getBetaArray()

Get the array holding beta information

Returns:

an array of integers, whose meaning depends on the node kind. For elements it is a pointer to the first namespace declaration

getCharacterBuffer

public AppendableCharSequence getCharacterBuffer()

Get the character buffer used to hold all the text data of the document

Returns:

the character buffer

getCommentBuffer

public CharSequence getCommentBuffer()

Get the character buffer used to hold all the comment data of the document

Returns:

the character buffer used for comments

getAttributeNameCodeArray

public int[] getAttributeNameCodeArray()

Get the array used to hold the name codes of all attributes

Returns:

an integer array; the Nth integer holds the attribute name code of attribute N

getAttributeTypeCodeArray

public int[] getAttributeTypeCodeArray()

Get the array used to hold the type codes of all attributes

Returns:

an integer array; the Nth integer holds the attribute type code of attribute N

getAttributeParentArray

public int[] getAttributeParentArray()

Get the array used to hold the parent pointers of all attributes

Returns:

an integer array; the Nth integer holds the pointer to the parent element of attribute N

getAttributeValueArray

public CharSequence[] getAttributeValueArray()

Get the array used to hold the name codes of all attributes

Returns:

an array of strings; the Nth string holds the string value of attribute N

getNamespaceBindings

public NamespaceBinding[] getNamespaceBindings()

Get the array used to hold the namespace declarations

Returns:

an array of namespace bindings

getNamespaceParentArray

public int[] getNamespaceParentArray()

Get the array used to hold the parent pointers of all namespace declarations

Returns:

an integer array; the Nth integer holds the pointer to the parent element of namespace N