org.apache.axis.message

Class NodeImpl

java.lang.Object

org.apache.axis.message.NodeImpl

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, org.w3c.dom.Node

Direct Known Subclasses:

MessageElement, Text

public class NodeImpl
extends java.lang.Object
implements org.w3c.dom.Node, Node, java.io.Serializable, java.lang.Cloneable

This is our implementation of the DOM node

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	_isDirty
protected org.xml.sax.Attributes	attributes
protected java.util.ArrayList	children
protected org.w3c.dom.Document	document
protected static org.apache.commons.logging.Log	log
protected java.lang.String	name
protected java.lang.String	namespaceURI
protected NodeImpl	parent
protected java.lang.String	prefix
protected org.w3c.dom.CharacterData	textRep

Fields inherited from interface org.w3c.dom.Node

ATTRIBUTE_NODE, CDATA_SECTION_NODE, COMMENT_NODE, DOCUMENT_FRAGMENT_NODE, DOCUMENT_NODE, DOCUMENT_POSITION_CONTAINED_BY, DOCUMENT_POSITION_CONTAINS, DOCUMENT_POSITION_DISCONNECTED, DOCUMENT_POSITION_FOLLOWING, DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC, DOCUMENT_POSITION_PRECEDING, DOCUMENT_TYPE_NODE, ELEMENT_NODE, ENTITY_NODE, ENTITY_REFERENCE_NODE, NOTATION_NODE, PROCESSING_INSTRUCTION_NODE, TEXT_NODE

Constructor Summary

Constructors

Constructor and Description
NodeImpl() empty constructor
NodeImpl(org.w3c.dom.CharacterData text) constructor which adopts the name and NS of the char data, and its text

Method Summary

Modifier and Type	Method and Description
org.w3c.dom.Node	appendChild(org.w3c.dom.Node newChild) Adds the node newChild to the end of the list of children of this node.
org.w3c.dom.Node	cloneNode(boolean deep) Returns a duplicate of this node, i.e., serves as a generic copy constructor for nodes.
protected org.w3c.dom.NamedNodeMap	convertAttrSAXtoDOM(org.xml.sax.Attributes saxAttr) The internal representation of Attributes cannot help being changed It is because Attribute is not immutible Type, so if we keep out value and just return it in another form, the application may chnae it, which we cannot detect without some kind back track method (call back notifying the chnage.) I am not sure which approach is better.
void	detachNode() Removes this Node object from the tree.
org.w3c.dom.NamedNodeMap	getAttributes() A NamedNodeMap containing the attributes of this node (if it is an Element) or null otherwise.
org.w3c.dom.NodeList	getChildNodes() A NodeList that contains all children of this node.
org.w3c.dom.Node	getFirstChild() The first child of this node.
org.w3c.dom.Node	getLastChild() The last child of this node.
java.lang.String	getLocalName() Returns the local part of the qualified name of this node.
java.lang.String	getNamespaceURI() The namespace URI of this node, or null if it is unspecified.
org.w3c.dom.Node	getNextSibling() The node immediately following this node.
java.lang.String	getNodeName() The name of this node, depending on its type; see the table above.
short	getNodeType() A code representing the type of the underlying object, as defined above.
java.lang.String	getNodeValue() The value of this node, depending on its type; see the table above.
org.w3c.dom.Document	getOwnerDocument() The Document object associated with this node.
protected NodeImpl	getParent() get the parent node
SOAPElement	getParentElement() Returns the parent element of this Node object.
org.w3c.dom.Node	getParentNode() The parent of this node.
java.lang.String	getPrefix() The namespace prefix of this node, or null if it is unspecified.
org.w3c.dom.Node	getPreviousSibling() The node immediately preceding this node.
java.lang.String	getValue() Returns the the value of the immediate child of this Node object if a child exists and its value is text.
boolean	hasAttributes() Returns whether this node (if it is an element) has any attributes.
boolean	hasChildNodes() Returns whether this node has any children.
protected void	initializeChildren() Initialize the children array
org.w3c.dom.Node	insertBefore(org.w3c.dom.Node newChild, org.w3c.dom.Node refChild) Inserts the node newChild before the existing child node refChild.
boolean	isDirty() get the dirty bit
boolean	isSupported(java.lang.String feature, java.lang.String version) Tests whether the DOM implementation implements a specific feature and that feature is supported by this node.
protected org.xml.sax.helpers.AttributesImpl	makeAttributesEditable() make the attributes editable
void	normalize() Puts all Text nodes in the full depth of the sub-tree underneath this Node, including attribute nodes, into a "normal" form where only structure (e.g., elements, comments, processing instructions, CDATA sections, and entity references) separates Text nodes, i.e., there are neither adjacent Text nodes nor empty Text nodes.
void	output(SerializationContext context) print the contents of this node
void	recycleNode() Notifies the implementation that this Node object is no longer being used by the application and that the implementation is free to reuse this object for nodes that may be created later.
org.w3c.dom.Node	removeChild(org.w3c.dom.Node oldChild) Removes the child node indicated by oldChild from the list of children, and returns it.
org.w3c.dom.Node	replaceChild(org.w3c.dom.Node newChild, org.w3c.dom.Node oldChild) Replaces the child node oldChild with newChild in the list of children, and returns the oldChild node.
void	reset()
void	setDirty()
void	setDirty(boolean dirty) set the dirty bit.
void	setNodeValue(java.lang.String nodeValue) The value of this node, depending on its type; see the table above.
void	setOwnerDocument(org.w3c.dom.Document doc) Set the owner document
protected void	setParent(NodeImpl parent) Set the parent node and invoke appendChild(this) to add this node to the parent's list of children.
void	setParentElement(SOAPElement parent) Sets the parent of this Node object to the given SOAPElement object.
void	setPrefix(java.lang.String prefix) The namespace prefix of this node, or null if it is unspecified.
void	setValue(java.lang.String value) If this is a Text node then this method will set its value, otherwise it sets the value of the immediate (Text) child of this node.

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

compareDocumentPosition, getBaseURI, getFeature, getTextContent, getUserData, isDefaultNamespace, isEqualNode, isSameNode, lookupNamespaceURI, lookupPrefix, setTextContent, setUserData

Field Detail

log

protected static org.apache.commons.logging.Log log

name

protected java.lang.String name

prefix

protected java.lang.String prefix

namespaceURI

protected java.lang.String namespaceURI

attributes

protected transient org.xml.sax.Attributes attributes

document

protected org.w3c.dom.Document document

parent

protected NodeImpl parent

children

protected java.util.ArrayList children

textRep

protected org.w3c.dom.CharacterData textRep

_isDirty

protected boolean _isDirty

Constructor Detail

NodeImpl

public NodeImpl()

empty constructor

NodeImpl

public NodeImpl(org.w3c.dom.CharacterData text)

constructor which adopts the name and NS of the char data, and its text

Parameters:

text -

Method Detail

getNodeType

public short getNodeType()

A code representing the type of the underlying object, as defined above.

Specified by:

getNodeType in interface org.w3c.dom.Node

normalize

public void normalize()

Puts all Text nodes in the full depth of the sub-tree underneath this Node, including attribute nodes, into a "normal" form where only structure (e.g., elements, comments, processing instructions, CDATA sections, and entity references) separates Text nodes, i.e., there are neither adjacent Text nodes nor empty Text nodes. This can be used to ensure that the DOM view of a document is the same as if it were saved and re-loaded, and is useful when operations (such as XPointer lookups) that depend on a particular document tree structure are to be used.In cases where the document contains CDATASections, the normalize operation alone may not be sufficient, since XPointers do not differentiate between Text nodes and CDATASection nodes.

Specified by:

normalize in interface org.w3c.dom.Node

hasAttributes

public boolean hasAttributes()

Returns whether this node (if it is an element) has any attributes.

Specified by:

hasAttributes in interface org.w3c.dom.Node

Returns:

true if this node has any attributes, false otherwise.

Since:

DOM Level 2

hasChildNodes

public boolean hasChildNodes()

Returns whether this node has any children.

Specified by:

hasChildNodes in interface org.w3c.dom.Node

Returns:

true if this node has any children, false otherwise.

getLocalName

public java.lang.String getLocalName()

Returns the local part of the qualified name of this node.
For nodes of any type other than ELEMENT_NODE and ATTRIBUTE_NODE and nodes created with a DOM Level 1 method, such as createElement from the Document interface, this is always null.

Specified by:

getLocalName in interface org.w3c.dom.Node

Since:

DOM Level 2

getNamespaceURI

public java.lang.String getNamespaceURI()

The namespace URI of this node, or null if it is unspecified.
This is not a computed value that is the result of a namespace lookup based on an examination of the namespace declarations in scope. It is merely the namespace URI given at creation time.
For nodes of any type other than ELEMENT_NODE and ATTRIBUTE_NODE and nodes created with a DOM Level 1 method, such as createElement from the Document interface, this is always null.Per the Namespaces in XML Specification an attribute does not inherit its namespace from the element it is attached to. If an attribute is not explicitly given a namespace, it simply has no namespace.

Specified by:

getNamespaceURI in interface org.w3c.dom.Node

Since:

DOM Level 2

getNodeName

public java.lang.String getNodeName()

The name of this node, depending on its type; see the table above.

Specified by:

getNodeName in interface org.w3c.dom.Node

getNodeValue

public java.lang.String getNodeValue()
                              throws org.w3c.dom.DOMException

The value of this node, depending on its type; see the table above. When it is defined to be null, setting it has no effect.

Specified by:

getNodeValue in interface org.w3c.dom.Node

Throws:

org.w3c.dom.DOMException - NO_MODIFICATION_ALLOWED_ERR: Raised when the node is readonly.

org.w3c.dom.DOMException - DOMSTRING_SIZE_ERR: Raised when it would return more characters than fit in a DOMString variable on the implementation platform.

getPrefix

public java.lang.String getPrefix()

The namespace prefix of this node, or null if it is unspecified.
Note that setting this attribute, when permitted, changes the nodeName attribute, which holds the qualified name, as well as the tagName and name attributes of the Element and Attr interfaces, when applicable.
Note also that changing the prefix of an attribute that is known to have a default value, does not make a new attribute with the default value and the original prefix appear, since the namespaceURI and localName do not change.
For nodes of any type other than ELEMENT_NODE and ATTRIBUTE_NODE and nodes created with a DOM Level 1 method, such as createElement from the Document interface, this is always null.

Specified by:

getPrefix in interface org.w3c.dom.Node

Throws:

org.w3c.dom.DOMException - INVALID_CHARACTER_ERR: Raised if the specified prefix contains an illegal character, per the XML 1.0 specification .
NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
NAMESPACE_ERR: Raised if the specified prefix is malformed per the Namespaces in XML specification, if the namespaceURI of this node is null, if the specified prefix is "xml" and the namespaceURI of this node is different from "http://www.w3.org/XML/1998/namespace", if this node is an attribute and the specified prefix is "xmlns" and the namespaceURI of this node is different from " http://www.w3.org/2000/xmlns/", or if this node is an attribute and the qualifiedName of this node is "xmlns" .

Since:

DOM Level 2

setNodeValue

public void setNodeValue(java.lang.String nodeValue)
                  throws org.w3c.dom.DOMException

The value of this node, depending on its type; see the table above. When it is defined to be null, setting it has no effect.

Specified by:

setNodeValue in interface org.w3c.dom.Node

Throws:

org.w3c.dom.DOMException - NO_MODIFICATION_ALLOWED_ERR: Raised when the node is readonly.

org.w3c.dom.DOMException - DOMSTRING_SIZE_ERR: Raised when it would return more characters than fit in a DOMString variable on the implementation platform.

setPrefix

public void setPrefix(java.lang.String prefix)

The namespace prefix of this node, or null if it is unspecified.
Note that setting this attribute, when permitted, changes the nodeName attribute, which holds the qualified name, as well as the tagName and name attributes of the Element and Attr interfaces, when applicable.
Note also that changing the prefix of an attribute that is known to have a default value, does not make a new attribute with the default value and the original prefix appear, since the namespaceURI and localName do not change.
For nodes of any type other than ELEMENT_NODE and ATTRIBUTE_NODE and nodes created with a DOM Level 1 method, such as createElement from the Document interface, this is always null.

Specified by:

setPrefix in interface org.w3c.dom.Node

Throws:

org.w3c.dom.DOMException - INVALID_CHARACTER_ERR: Raised if the specified prefix contains an illegal character, per the XML 1.0 specification .
NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
NAMESPACE_ERR: Raised if the specified prefix is malformed per the Namespaces in XML specification, if the namespaceURI of this node is null, if the specified prefix is "xml" and the namespaceURI of this node is different from "http://www.w3.org/XML/1998/namespace", if this node is an attribute and the specified prefix is "xmlns" and the namespaceURI of this node is different from " http://www.w3.org/2000/xmlns/", or if this node is an attribute and the qualifiedName of this node is "xmlns" .

Since:

DOM Level 2

setOwnerDocument

public void setOwnerDocument(org.w3c.dom.Document doc)

Set the owner document

Parameters:

doc -

getOwnerDocument

public org.w3c.dom.Document getOwnerDocument()

The Document object associated with this node. This is also the Document object used to create new nodes. When this node is a Document or a DocumentType which is not used with any Document yet, this is null.

Specified by:

getOwnerDocument in interface org.w3c.dom.Node

getAttributes

public org.w3c.dom.NamedNodeMap getAttributes()

A NamedNodeMap containing the attributes of this node (if it is an Element) or null otherwise.

Specified by:

getAttributes in interface org.w3c.dom.Node

getFirstChild

public org.w3c.dom.Node getFirstChild()

The first child of this node. If there is no such node, this returns null.

Specified by:

getFirstChild in interface org.w3c.dom.Node

getLastChild

public org.w3c.dom.Node getLastChild()

The last child of this node. If there is no such node, this returns null.

Specified by:

getLastChild in interface org.w3c.dom.Node

getNextSibling

public org.w3c.dom.Node getNextSibling()

The node immediately following this node. If there is no such node, this returns null.

Specified by:

getNextSibling in interface org.w3c.dom.Node

getParentNode

public org.w3c.dom.Node getParentNode()

The parent of this node. All nodes, except Attr, Document, DocumentFragment, Entity, and Notation may have a parent. However, if a node has just been created and not yet added to the tree, or if it has been removed from the tree, this is null.

Specified by:

getParentNode in interface org.w3c.dom.Node

getPreviousSibling

public org.w3c.dom.Node getPreviousSibling()

The node immediately preceding this node. If there is no such node, this returns null.

Specified by:

getPreviousSibling in interface org.w3c.dom.Node

cloneNode

public org.w3c.dom.Node cloneNode(boolean deep)

Returns a duplicate of this node, i.e., serves as a generic copy constructor for nodes. The duplicate node has no parent; ( parentNode is null.).
Cloning an Element copies all attributes and their values, including those generated by the XML processor to represent defaulted attributes, but this method does not copy any text it contains unless it is a deep clone, since the text is contained in a child Text node. Cloning an Attribute directly, as opposed to be cloned as part of an Element cloning operation, returns a specified attribute ( specified is true). Cloning any other type of node simply returns a copy of this node.
Note that cloning an immutable subtree results in a mutable copy, but the children of an EntityReference clone are readonly . In addition, clones of unspecified Attr nodes are specified. And, cloning Document, DocumentType, Entity, and Notation nodes is implementation dependent.

Specified by:

cloneNode in interface org.w3c.dom.Node

Parameters:

deep - If true, recursively clone the subtree under the specified node; if false, clone only the node itself (and its attributes, if it is an Element).

Returns:

The duplicate node.

getChildNodes

public org.w3c.dom.NodeList getChildNodes()

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 org.w3c.dom.Node

isSupported

public boolean isSupported(java.lang.String feature,
                           java.lang.String version)

Tests whether the DOM implementation implements a specific feature and that feature is supported by this node.

Specified by:

isSupported in interface org.w3c.dom.Node

Parameters:

feature - The name of the feature to test. This is the same name which can be passed to the method hasFeature on DOMImplementation.

version - This is the version number of the feature to test. In Level 2, version 1, this is the string "2.0". If the version is not specified, supporting any version of the feature will cause the method to return true.

Returns:

Returns true if the specified feature is supported on this node, false otherwise.

Since:

DOM Level 2

appendChild

public org.w3c.dom.Node appendChild(org.w3c.dom.Node newChild)
                             throws org.w3c.dom.DOMException

Adds the node newChild to the end of the list of children of this node. If the newChild is already in the tree, it is first removed.

Specified by:

appendChild in interface org.w3c.dom.Node

Parameters:

newChild - The node to add.If it is a DocumentFragment object, the entire contents of the document fragment are moved into the child list of this node

Returns:

The node added.

Throws:

org.w3c.dom.DOMException - HIERARCHY_REQUEST_ERR: Raised if this node is of a type that does not allow children of the type of the newChild node, or if the node to append is one of this node's ancestors or this node itself.
WRONG_DOCUMENT_ERR: Raised if newChild was created from a different document than the one that created this node.
NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly or if the previous parent of the node being inserted is readonly.

removeChild

public org.w3c.dom.Node removeChild(org.w3c.dom.Node oldChild)
                             throws org.w3c.dom.DOMException

Removes the child node indicated by oldChild from the list of children, and returns it.

Specified by:

removeChild in interface org.w3c.dom.Node

Parameters:

oldChild - The node being removed.

Returns:

The node removed.

Throws:

org.w3c.dom.DOMException - NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
NOT_FOUND_ERR: Raised if oldChild is not a child of this node.

insertBefore

public org.w3c.dom.Node insertBefore(org.w3c.dom.Node newChild,
                                     org.w3c.dom.Node refChild)
                              throws org.w3c.dom.DOMException

Inserts the node newChild before the existing child node refChild. If refChild is null, insert newChild at the end of the list of children.
If newChild is a DocumentFragment object, all of its children are inserted, in the same order, before refChild. If the newChild is already in the tree, it is first removed.

Specified by:

insertBefore in interface org.w3c.dom.Node

Parameters:

newChild - The node to insert.

refChild - The reference node, i.e., the node before which the new node must be inserted.

Returns:

The node being inserted.

Throws:

org.w3c.dom.DOMException - HIERARCHY_REQUEST_ERR: Raised if this node is of a type that does not allow children of the type of the newChild node, or if the node to insert is one of this node's ancestors or this node itself.
WRONG_DOCUMENT_ERR: Raised if newChild was created from a different document than the one that created this node.
NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly or if the parent of the node being inserted is readonly.
NOT_FOUND_ERR: Raised if refChild is not a child of this node.

replaceChild

public org.w3c.dom.Node replaceChild(org.w3c.dom.Node newChild,
                                     org.w3c.dom.Node oldChild)
                              throws org.w3c.dom.DOMException

Replaces the child node oldChild with newChild in the list of children, and returns the oldChild node.
If newChild is a DocumentFragment object, oldChild is replaced by all of the DocumentFragment children, which are inserted in the same order. If the newChild is already in the tree, it is first removed.

Specified by:

replaceChild in interface org.w3c.dom.Node

Parameters:

newChild - The new node to put in the child list.

oldChild - The node being replaced in the list.

Returns:

The node replaced.

Throws:

org.w3c.dom.DOMException - HIERARCHY_REQUEST_ERR: Raised if this node is of a type that does not allow children of the type of the newChild node, or if the node to put in is one of this node's ancestors or this node itself.
WRONG_DOCUMENT_ERR: Raised if newChild was created from a different document than the one that created this node.
NO_MODIFICATION_ALLOWED_ERR: Raised if this node or the parent of the new node is readonly.
NOT_FOUND_ERR: Raised if oldChild is not a child of this node.

getValue

public java.lang.String getValue()

Returns the the value of the immediate child of this Node object if a child exists and its value is text.

Returns:

a String with the text of the immediate child of this Node object if (1) there is a child and (2) the child is a Text object; null otherwise

setParentElement

public void setParentElement(SOAPElement parent)
                      throws SOAPException

Sets the parent of this Node object to the given SOAPElement object.

Parameters:

parent - the SOAPElement object to be set as the parent of this Node object

Throws:

SOAPException - if there is a problem in setting the parent to the given element

See Also:

getParentElement()

getParentElement

public SOAPElement getParentElement()

Returns the parent element of this Node object. This method can throw an UnsupportedOperationException if the tree is not kept in memory.

Returns:

the SOAPElement object that is the parent of this Node object or null if this Node object is root

Throws:

java.lang.UnsupportedOperationException - if the whole tree is not kept in memory

See Also:

setParentElement(javax.xml.soap.SOAPElement)

detachNode

public void detachNode()

Removes this Node object from the tree. Once removed, this node can be garbage collected if there are no application references to it.

recycleNode

public void recycleNode()

Notifies the implementation that this Node object is no longer being used by the application and that the implementation is free to reuse this object for nodes that may be created later.

Calling the method recycleNode implies that the method detachNode has been called previously.

setValue

public void setValue(java.lang.String value)

If this is a Text node then this method will set its value, otherwise it sets the value of the immediate (Text) child of this node. The value of the immediate child of this node can be set only if, there is one child node and that node is a Text node, or if there are no children in which case a child Text node will be created.

Parameters:

value - the text to set

Throws:

java.lang.IllegalStateException - if the node is not a Text node and either has more than one child node or has a child node that is not a Text node

makeAttributesEditable

protected org.xml.sax.helpers.AttributesImpl makeAttributesEditable()

make the attributes editable

Returns:

AttributesImpl

convertAttrSAXtoDOM

protected org.w3c.dom.NamedNodeMap convertAttrSAXtoDOM(org.xml.sax.Attributes saxAttr)

The internal representation of Attributes cannot help being changed It is because Attribute is not immutible Type, so if we keep out value and just return it in another form, the application may chnae it, which we cannot detect without some kind back track method (call back notifying the chnage.) I am not sure which approach is better.

initializeChildren

protected void initializeChildren()

Initialize the children array

getParent

protected NodeImpl getParent()

get the parent node

Returns:

parent node

setParent

protected void setParent(NodeImpl parent)
                  throws SOAPException

Set the parent node and invoke appendChild(this) to add this node to the parent's list of children.

Parameters:

parent -

Throws:

SOAPException

output

public void output(SerializationContext context)
            throws java.lang.Exception

print the contents of this node

Parameters:

context -

Throws:

java.lang.Exception

isDirty

public boolean isDirty()

get the dirty bit

Returns:

setDirty

public void setDirty(boolean dirty)

set the dirty bit. will also set our parent as dirty, if there is one. Note that clearing the dirty bit does not propagate upwards.

Parameters:

dirty - new value of the dirty bit

setDirty

public void setDirty()

reset

public void reset()