com.icl.saxon.tree
Class ParentNodeImpl

java.lang.Object
  |
  +--com.icl.saxon.om.AbstractNode
        |
        +--com.icl.saxon.tree.NodeImpl
              |
              +--com.icl.saxon.tree.ParentNodeImpl

All Implemented Interfaces:

DOMLocator, Node, NodeInfo, Source, SourceLocator

Direct Known Subclasses:

DocumentImpl, ElementImpl

abstract class ParentNodeImpl

extends NodeImpl

ParentNodeImpl is an implementation of a non-leaf node (specifically, an Element node or a Document node)

Author:

Michael H. Kay (mhkay@iclway.co.uk)

Field Summary

protected int

sequence

Fields inherited from class com.icl.saxon.tree.NodeImpl

emptyArray, index, parent

Fields inherited from class com.icl.saxon.om.AbstractNode

NODE_LETTER

Fields inherited from interface org.w3c.dom.Node

ATTRIBUTE_NODE, CDATA_SECTION_NODE, COMMENT_NODE, DOCUMENT_FRAGMENT_NODE, DOCUMENT_NODE, DOCUMENT_TYPE_NODE, ELEMENT_NODE, ENTITY_NODE, ENTITY_REFERENCE_NODE, NOTATION_NODE, PROCESSING_INSTRUCTION_NODE, TEXT_NODE

Fields inherited from interface com.icl.saxon.om.NodeInfo

ATTRIBUTE, COMMENT, ELEMENT, NAMESPACE, NODE, NONE, NUMBER_OF_TYPES, PI, ROOT, TEXT

Constructor Summary

(package private)

ParentNodeImpl()

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	copyStringValue(Outputter out) Copy the string-value of this node to a given outputter
void	dropChildren() Drop a branch of the tree.
AxisEnumeration	enumerateChildren(NodeTest test) Get an enumeration of the children of this node
NodeList	getChildNodes() Return a NodeList that contains all children of this node.
Node	getFirstChild() Get the first child node of the element
Node	getLastChild() Get the last child node of the element
java.lang.String	getNodeValue() Get the node value as defined in the DOM.
protected NodeImpl	getNthChild(int n) Get the nth child node of the element (numbering from 0)
protected long	getSequenceNumber() Get the node sequence number (in document order).
java.lang.String	getStringValue() Return the string-value of the node, that is, the concatenation of the character content of all descendent elements and text nodes.
boolean	hasChildNodes() Determine if the node has any children.
void	removeChild(int index) Remove node at given index.
void	renumberChildren() Renumber the children of a given parent node.
void	useChildrenArray(NodeImpl[] array) Supply an array to be used for the array of children.

Methods inherited from class com.icl.saxon.tree.NodeImpl

compareOrder, generateId, getAttributes, getAttributeValue, getAttributeValue, getBaseURI, getDisplayName, getDocumentElement, getDocumentRoot, getEnumeration, getFingerprint, getLineNumber, getLocalName, getNameCode, getNamePool, getNextInDocument, getNextSibling, getOriginatingNode, getParent, getPrefix, getPreviousInDocument, getPreviousSibling, getSystemId, getURI, hasAttributes, isSameNode, outputNamespaceNodes, removeNode, setSystemId

Methods inherited from class com.icl.saxon.om.AbstractNode

appendChild, appendData, cloneNode, createAttribute, createAttributeNS, createCDATASection, createComment, createDocumentFragment, createElement, createElementNS, createEntityReference, createProcessingInstruction, createTextNode, deleteData, disallowUpdate, getAttribute, getAttributeNode, getAttributeNodeNS, getAttributeNS, getColumnNumber, getData, getDoctype, getElementById, getElementsByTagName, getElementsByTagNameNS, getImplementation, getLength, getName, getNamespaceURI, getNodeName, getOwnerDocument, getOwnerElement, getParentNode, getPublicId, getSpecified, getTagName, getValue, hasAttribute, hasAttributeNS, importNode, insertBefore, insertData, isSupported, normalize, removeAttribute, removeAttributeNode, removeAttributeNS, removeChild, replaceChild, replaceData, setAttributeNode, setAttributeNodeNS, setAttributeNS, setData, setNodeValue, setPrefix, setValue, splitText, substringData, supports

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.w3c.dom.Node

getNodeType

Methods inherited from interface com.icl.saxon.om.NodeInfo

copy, getNodeType

Field Detail

sequence

protected int sequence

Constructor Detail

ParentNodeImpl

ParentNodeImpl()

Method Detail

getSequenceNumber

protected final long getSequenceNumber()

Get the node sequence number (in document order). Sequence numbers are monotonic but not consecutive. In the current implementation, parent nodes (elements and roots) have a zero least-significant word, while namespaces, attributes, text nodes, comments, and PIs have the top word the same as their owner and the bottom half reflecting their relative position.

Overrides:

getSequenceNumber in class NodeImpl

hasChildNodes

public final boolean hasChildNodes()

Determine if the node has any children.

Specified by:

hasChildNodes in interface Node

Overrides:

hasChildNodes in class NodeImpl

Returns:

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

enumerateChildren

public final AxisEnumeration enumerateChildren(NodeTest test)

Get an enumeration of the children of this node

getFirstChild

public final Node getFirstChild()

Get the first child node of the element

Specified by:

getFirstChild in interface Node

Overrides:

getFirstChild in class NodeImpl

Returns:

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

getLastChild

public final Node getLastChild()

Get the last child node of the element

Specified by:

getLastChild in interface Node

Overrides:

getLastChild in class NodeImpl

Returns:

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

getChildNodes

public final NodeList getChildNodes()

Return a NodeList that contains all children of this node. If there are no children, this is a NodeList containing no nodes.

Specified by:

getChildNodes in interface Node

Overrides:

getChildNodes in class NodeImpl

getNthChild

protected final NodeImpl getNthChild(int n)

Get the nth child node of the element (numbering from 0)

Returns:

the last child of the element, or null if there is no n'th child

getStringValue

public java.lang.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.

copyStringValue

public void copyStringValue(Outputter out)
                     throws TransformerException

Copy the string-value of this node to a given outputter

Specified by:

copyStringValue in interface NodeInfo

Overrides:

copyStringValue in class AbstractNode

TransformerException

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.

removeChild

public void removeChild(int index)

Remove node at given index. Will always be followed by a renumberChildren().

renumberChildren

public void renumberChildren()

Renumber the children of a given parent node. For system use only

dropChildren

public void dropChildren()

Drop a branch of the tree. The target element remains in the tree, but its children are disconnected from the parent. Unless there are other references to the children (e.g. in a variable) they will be deleted from memory next time the garbage collector comes round.

compact

public void compact(int size)

Compact the space used by this node

getNodeValue

public java.lang.String getNodeValue()

Get the node value as defined in the DOM. This is not the same as the XPath string-value.

Specified by:

getNodeValue in interface Node

Overrides:

getNodeValue in class AbstractNode