net.sf.saxon.tree
Class ElementImpl

java.lang.Object
  net.sf.saxon.tree.NodeImpl
      net.sf.saxon.tree.ElementImpl

All Implemented Interfaces:

Source, SourceLocator, FingerprintedNode, Item, NodeInfo, ValueRepresentation

Direct Known Subclasses:

ElementWithAttributes

public class ElementImpl
extends NodeImpl

ElementImpl implements an element with no attributes or namespace declarations.

This class is an implementation of NodeInfo. For elements with attributes or namespace declarations, class ElementWithAttributes is used.

Author:

Michael H. Kay

Field Summary

Fields inherited from class net.sf.saxon.tree.NodeImpl

NODE_LETTER

Fields inherited from interface net.sf.saxon.om.NodeInfo

ALL_NAMESPACES, EMPTY_NAMESPACE_LIST, IS_DTD_TYPE, IS_NILLED, LOCAL_NAMESPACES, NO_NAMESPACES

Fields inherited from interface net.sf.saxon.om.ValueRepresentation

EMPTY_VALUE_ARRAY

Constructor Summary

ElementImpl()
Construct an empty ElementImpl

Method Summary

void	addChild(NodeImpl node, int index) Add a child node to this node.
void	compact(int size) Compact the space used by this node
void	copy(Receiver out, int whichNamespaces, boolean copyAnnotations, int locationId) Copy this node to a given outputter (supporting xsl:copy-of)
AxisIterator	enumerateChildren(NodeTest test) Get an enumeration of the children of this node
void	generateId(FastStringBuffer buffer) Get a character string that uniquely identifies this node
AttributeCollection	getAttributeList() Get the attribute list for this element.
String	getBaseURI() Get the base URI of this element node.
int[]	getDeclaredNamespaces(int[] buffer) Get all namespace undeclarations and undeclarations defined on this element.
DocumentInfo	getDocumentRoot() Get the root document node
NodeInfo	getFirstChild() Get the first child node of the element
NodeInfo	getLastChild() Get the last child node of the element
int	getLineNumber() Get the line number of the node within its source document entity
int	getNameCode() Get the nameCode of the node.
int	getNodeKind() Return the type of node.
NodeInfo	getRoot() Get the root node
String	getStringValue() Return the string-value of the node, that is, the concatenation of the character content of all descendent elements and text nodes.
CharSequence	getStringValueCS() Get the value of the item as a CharSequence.
String	getSystemId() Get the system ID of the entity containing this element node.
boolean	hasChildNodes() Determine if the node has any children.
void	initialise(int nameCode, AttributeCollectionImpl atts, NodeInfo parent, String baseURI, int lineNumber, int sequenceNumber) Initialise a new ElementImpl with an element name
void	sendNamespaceDeclarations(Receiver out, boolean includeAncestors) Output all namespace nodes associated with this element.
void	setLineNumber(int line) Set the line number of the element within its source document entity
void	setNameCode(int nameCode) Set the name code.
void	setSystemId(String uri) Set the system ID of this node.
void	useChildrenArray(NodeImpl[] array) Supply an array to be used for the array of children.

Methods inherited from class net.sf.saxon.tree.NodeImpl

atomize, compareOrder, equals, getAttributeValue, getColumnNumber, getConfiguration, getDisplayName, getDocumentNumber, getFingerprint, getLocalPart, getNamePool, getNextInDocument, getNextSibling, getParent, getPrefix, getPreviousInDocument, getPreviousSibling, getPublicId, getTypeAnnotation, getTypedValue, getURI, hashCode, isSameNodeInfo, iterateAxis, iterateAxis

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ElementImpl

public ElementImpl()

Construct an empty ElementImpl

Method Detail

setNameCode

public void setNameCode(int nameCode)

Set the name code. Used when creating a dummy element in the Stripper

initialise

public void initialise(int nameCode,
                       AttributeCollectionImpl atts,
                       NodeInfo parent,
                       String baseURI,
                       int lineNumber,
                       int sequenceNumber)

Initialise a new ElementImpl with an element name

Parameters:

nameCode - Integer representing the element name, with namespaces resolved

atts - The attribute list: always null

parent - The parent node

baseURI - The base URI of the new element

lineNumber - The line number of the element in the source document

sequenceNumber - Integer identifying this element within the document

setSystemId

public void setSystemId(String uri)

Set the system ID of this node. This method is provided so that a NodeInfo implements the javax.xml.transform.Source interface, allowing a node to be used directly as the Source of a transformation

Specified by:

setSystemId in interface Source

Overrides:

setSystemId in class NodeImpl

getRoot

public NodeInfo getRoot()

Get the root node

Specified by:

getRoot in interface NodeInfo

Overrides:

getRoot in class NodeImpl

Returns:

the NodeInfo representing the containing document

getDocumentRoot

public DocumentInfo getDocumentRoot()

Get the root document node

Specified by:

getDocumentRoot in interface NodeInfo

Overrides:

getDocumentRoot in class NodeImpl

Returns:

the DocumentInfo representing the containing document

getSystemId

public final String getSystemId()

Get the system ID of the entity containing this element node.

Specified by:

getSystemId in interface Source

Specified by:

getSystemId in interface SourceLocator

Specified by:

getSystemId in interface NodeInfo

Overrides:

getSystemId in class NodeImpl

Returns:

the System Identifier of the entity in the source document containing the node, or null if not known or not applicable.

getBaseURI

public String getBaseURI()

Get the base URI of this element node. This will be the same as the System ID unless xml:base has been used.

Specified by:

getBaseURI in interface NodeInfo

Overrides:

getBaseURI in class NodeImpl

Returns:

the base URI of the node. This may be null if the base URI is unknown.

setLineNumber

public void setLineNumber(int line)

Set the line number of the element within its source document entity

getLineNumber

public int getLineNumber()

Get the line number of the node within its source document entity

Specified by:

getLineNumber in interface SourceLocator

Specified by:

getLineNumber in interface NodeInfo

Overrides:

getLineNumber in class NodeImpl

Returns:

the line number of the node in its original source document; or -1 if not available

getNameCode

public int getNameCode()

Get the nameCode of the node. This is used to locate the name in the NamePool

Specified by:

getNameCode in interface NodeInfo

Overrides:

getNameCode in class NodeImpl

Returns:

an integer name code, which may be used to obtain the actual node name from the name pool. For unnamed nodes (text nodes, comments, document nodes, and namespace nodes for the default namespace), returns -1.

See Also:

allocate, getFingerprint

generateId

public void generateId(FastStringBuffer buffer)

Get a character string that uniquely identifies this node

Specified by:

generateId in interface NodeInfo

Overrides:

generateId in class NodeImpl

Parameters:

buffer - to contain the generated ID

sendNamespaceDeclarations

public void sendNamespaceDeclarations(Receiver out,
                                      boolean includeAncestors)
                               throws XPathException

Output all namespace nodes associated with this element.

Specified by:

sendNamespaceDeclarations in interface NodeInfo

Overrides:

sendNamespaceDeclarations in class NodeImpl

Parameters:

out - The relevant outputter

includeAncestors - True if namespaces declared on ancestor elements must

Throws:

XPathException

getDeclaredNamespaces

public int[] getDeclaredNamespaces(int[] buffer)

Get all namespace undeclarations and undeclarations defined on this element.

Specified by:

getDeclaredNamespaces in interface NodeInfo

Overrides:

getDeclaredNamespaces in class NodeImpl

Parameters:

buffer - If this is non-null, and the result array fits in this buffer, then the result may overwrite the contents of this array, to avoid the cost of allocating a new array on the heap.

Returns:

An array of integers representing the namespace declarations and undeclarations present on this element. For a node other than an element, return null. Otherwise, the returned array is a sequence of namespace codes, whose meaning may be interpreted by reference to the name pool. The top half word of each namespace code represents the prefix, the bottom half represents the URI. If the bottom half is zero, then this is a namespace undeclaration rather than a declaration. The XML namespace is never included in the list. If the supplied array is larger than required, then the first unused entry will be set to -1.

For a node other than an element, the method returns null.

getNodeKind

public final int getNodeKind()

Return the type of node.

Returns:

Type.ELEMENT

See Also:

Type

getAttributeList

public AttributeCollection getAttributeList()

Get the attribute list for this element.

Returns:

The attribute list. This will not include any namespace attributes. The attribute names will be in expanded form, with prefixes replaced by URIs

copy

public void copy(Receiver out,
                 int whichNamespaces,
                 boolean copyAnnotations,
                 int locationId)
          throws XPathException

Copy this node to a given outputter (supporting xsl:copy-of)

Parameters:

out - The outputter

whichNamespaces - indicates which namespaces should be output: all, none, or local namespaces only (those not declared on the parent element)

copyAnnotations - indicates whether the type annotations of element and attribute nodes should be copied

locationId - If non-zero, identifies the location of the instruction that requested this copy. If zero, indicates that the location information for the original node is to be copied; in this case the Receiver must be a LocationCopier

Throws:

XPathException

hasChildNodes

public final boolean hasChildNodes()

Determine if the node has any children.

Specified by:

hasChildNodes in interface NodeInfo

Overrides:

hasChildNodes in class NodeImpl

Returns:

true if the node has any children, false if the node has no children.

enumerateChildren

public final AxisIterator enumerateChildren(NodeTest test)

Get an enumeration of the children of this node

Parameters:

test - A NodeTest to be satisfied by the child nodes, or null if all child node are to be returned

getFirstChild

public final NodeInfo getFirstChild()

Get the first child node of the element

Overrides:

getFirstChild in class NodeImpl

Returns:

the first child node of the required type, or null if there are no children

getLastChild

public final NodeInfo getLastChild()

Get the last child node of the element

Overrides:

getLastChild in class NodeImpl

Returns:

the last child of the element, or null if there are no children

getStringValue

public String getStringValue()

Return the string-value of the node, that is, the concatenation of the character content of all descendent elements and text nodes.

Returns:

the accumulated character content of the element, including descendant elements.

See Also:

Item.getStringValueCS()

getStringValueCS

public CharSequence getStringValueCS()

Description copied from class: NodeImpl

Get the value of the item as a CharSequence. This is in some cases more efficient than the version of the method that returns a String.

Specified by:

getStringValueCS in interface Item

Specified by:

getStringValueCS in interface ValueRepresentation

Overrides:

getStringValueCS in class NodeImpl

Returns:

the string value of the item

See Also:

Item.getStringValue()

useChildrenArray

public void useChildrenArray(NodeImpl[] array)

Supply an array to be used for the array of children. For system use only.

addChild

public void addChild(NodeImpl node,
                     int index)

Add a child node to this node. For system use only. Note: normalizing adjacent text nodes is the responsibility of the caller.

compact

public void compact(int size)

Compact the space used by this node