CoreDocumentImpl (JBoss Application Server: Build 7.1.2.Final API)

java.lang.Object
- org.apache.xerces.dom.NodeImpl
- - org.apache.xerces.dom.ChildNode
  - - org.apache.xerces.dom.ParentNode
    - - org.apache.xerces.dom.CoreDocumentImpl

All Implemented Interfaces:

Serializable, Cloneable, Document, EventTarget, Node, NodeList

Direct Known Subclasses:

DocumentImpl
```
public class CoreDocumentImpl
extends ParentNode
implements Document
```
The Document interface represents the entire HTML or XML document. Conceptually, it is the root of the document tree, and provides the primary access to the document's data.
Since elements, text nodes, comments, processing instructions, etc. cannot exist outside the context of a Document, the Document interface also contains the factory methods needed to create these objects. The Node objects created have a ownerDocument attribute which associates them with the Document within whose context they were created.
The CoreDocumentImpl class only implements the DOM Core. Additional modules are supported by the more complete DocumentImpl subclass.
Note: When any node in the document is serialized, the entire document is serialized along with it.

Since:

PR-DOM-Level-1-19980818.

Version:

$Id$

Author:

Arnaud Le Hors, IBM, Joe Kesselman, IBM, Andy Clark, IBM, Ralf Pfeiffer, IBM

See Also:
Serialized Form

Field Summary

Fields
Modifier and Type	Field and Description
`protected String`	`actualEncoding` Experimental DOM Level 3 feature: Document actualEncoding
`protected boolean`	`allowGrammarAccess` Allow grammar access.
`protected int`	`changes` Number of alterations made to this document since its creation.
`protected ElementImpl`	`docElement` Document element.
`protected DocumentTypeImpl`	`docType` Document type.
`protected String`	`encoding` Experimental DOM Level 3 feature: Document encoding
`protected boolean`	`errorChecking` Bypass error checking.
`protected String`	`fDocumentURI` Experimental DOM Level 3 feature: documentURI
`protected Hashtable`	`identifiers` Identifiers.
`protected boolean`	`standalone` Experimental DOM Level 3 feature: Document standalone
`protected Hashtable`	`userData` Table for user data attached to this document nodes.
`protected String`	`version` Experimental DOM Level 3 feature: Document version
`protected boolean`	`xmlVersionChanged`

Fields inherited from class org.apache.xerces.dom.ParentNode
firstChild, fNodeListCache, ownerDocument

Fields inherited from class org.apache.xerces.dom.ChildNode
nextSibling, previousSibling

Constructor Summary

Constructors
Constructor and Description
`CoreDocumentImpl()` NON-DOM: Actually creating a Document is outside the DOM's spec, since it has to operate in terms of a particular implementation.
`CoreDocumentImpl(boolean grammarAccess)` Constructor.
`CoreDocumentImpl(DocumentType doctype)` For DOM2 support.
`CoreDocumentImpl(DocumentType doctype, boolean grammarAccess)` For DOM2 support.

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`abort()` DOM Level 3 WD - Experimental.
`protected void`	`addEventListener(NodeImpl node, String type, EventListener listener, boolean useCapture)`
`Node`	`adoptNode(Node source)` DOM Level 3 WD - Experimental Change the node's ownerDocument, and its subtree, to this Document
`protected void`	`callUserDataHandlers(Node n, Node c, short operation)` Call user data handlers when a node is deleted (finalized)
`protected void`	`changed()` Denotes that this node has changed.
`protected int`	`changes()` Returns the number of changes to this node.
`protected void`	`checkDOMNSErr(String prefix, String namespace)`
`protected void`	`checkNamespaceWF(String qname, int colon1, int colon2)` Call user data handlers to let them know the nodes they are related to are being deleted.
`protected void`	`checkQName(String prefix, String local)` Checks if the given qualified name is legal with respect to the version of XML to which this document must conform.
`protected void`	`clearIdentifiers()` Remove all identifiers from the ID table
`Object`	`clone()` Clone.
`Node`	`cloneNode(boolean deep)` Deep-clone a document, including fixing ownerDoc for the cloned children.
`protected void`	`cloneNode(CoreDocumentImpl newdoc, boolean deep)` internal method to share code with subclass
`protected void`	`copyEventListeners(NodeImpl src, NodeImpl tgt)`
`Attr`	`createAttribute(String name)` Factory method; creates an Attribute having this Document as its OwnerDoc.
`Attr`	`createAttributeNS(String namespaceURI, String qualifiedName)` Introduced in DOM Level 2.
`Attr`	`createAttributeNS(String namespaceURI, String qualifiedName, String localpart)` NON-DOM: a factory method used by the Xerces DOM parser to create an element.
`CDATASection`	`createCDATASection(String data)` Factory method; creates a CDATASection having this Document as its OwnerDoc.
`Comment`	`createComment(String data)` Factory method; creates a Comment having this Document as its OwnerDoc.
`DocumentFragment`	`createDocumentFragment()` Factory method; creates a DocumentFragment having this Document as its OwnerDoc.
`DocumentType`	`createDocumentType(String qualifiedName, String publicID, String systemID)` NON-DOM Factory method; creates a DocumentType having this Document as its OwnerDoc.
`Element`	`createElement(String tagName)` Factory method; creates an Element having this Document as its OwnerDoc.
`ElementDefinitionImpl`	`createElementDefinition(String name)` NON-DOM Factory method: creates an element definition.
`Element`	`createElementNS(String namespaceURI, String qualifiedName)` Introduced in DOM Level 2.
`Element`	`createElementNS(String namespaceURI, String qualifiedName, String localpart)` NON-DOM: a factory method used by the Xerces DOM parser to create an element.
`Entity`	`createEntity(String name)` NON-DOM Factory method; creates an Entity having this Document as its OwnerDoc.
`EntityReference`	`createEntityReference(String name)` Factory method; creates an EntityReference having this Document as its OwnerDoc.
`Notation`	`createNotation(String name)` NON-DOM Factory method; creates a Notation having this Document as its OwnerDoc.
`ProcessingInstruction`	`createProcessingInstruction(String target, String data)` Factory method; creates a ProcessingInstruction having this Document as its OwnerDoc.
`Text`	`createTextNode(String data)` Factory method; creates a Text node having this Document as its OwnerDoc.
`protected boolean`	`dispatchEvent(NodeImpl node, Event event)`
`boolean`	`getAsync()` DOM Level 3 WD - Experimental.
`String`	`getBaseURI()` Returns the absolute base URI of this node or null if the implementation wasn't able to obtain an absolute URI.
`DocumentType`	`getDoctype()` For XML, this provides access to the Document Type Definition.
`Element`	`getDocumentElement()` Convenience method, allowing direct access to the child node which is considered the root of the actual document content.
`String`	`getDocumentURI()` DOM Level 3 WD - Experimental.
`DOMConfiguration`	`getDomConfig()` DOM Level 3 CR - Experimental The configuration used when `Document.normalizeDocument` is invoked.
`Element`	`getElementById(String elementId)` Introduced in DOM Level 2 Returns the Element whose ID is given by elementId.
`NodeList`	`getElementsByTagName(String tagname)` Return a live collection of all descendent Elements (not just immediate children) having the specified tag name.
`NodeList`	`getElementsByTagNameNS(String namespaceURI, String localName)` Introduced in DOM Level 2.
`String`	`getEncoding()` Deprecated. This method is internal and only exists for compatibility with older applications. New applications should never call this method.
`boolean`	`getErrorChecking()` Returns true if the DOM implementation performs error checking.
`Object`	`getFeature(String feature, String version)`
`Element`	`getIdentifier(String idName)` Returns a previously registered element with the specified identifier name, or null if no element is registered.
`Enumeration`	`getIdentifiers()` Returns an enumeration registered of identifier names.
`DOMImplementation`	`getImplementation()` Retrieve information describing the abilities of this particular DOM implementation.
`String`	`getInputEncoding()` DOM Level 3 CR - Experimental.
`String`	`getNodeName()` Returns the node name.
`protected int`	`getNodeNumber()` NON-DOM: Get the number associated with this document.
`protected int`	`getNodeNumber(Node node)` NON-DOM: Get a number associated with a node created with respect to this document.
`short`	`getNodeType()` Returns the node type.
`Document`	`getOwnerDocument()` Find the Document that this Node belongs to (the document in whose context the Node was created).
`boolean`	`getStandalone()` Deprecated. This method is internal and only exists for compatibility with older applications. New applications should never call this method.
`boolean`	`getStrictErrorChecking()`
`String`	`getTextContent()` This attribute returns the text content of this node and its descendants.
`protected Object`	`getUserData(NodeImpl n)` NON-DOM: kept for backward compatibility Retreive user data related to a given node
`Object`	`getUserData(Node n, String key)` Retrieves the object associated to a key on a this node.
`protected Hashtable`	`getUserDataRecord(Node n)`
`String`	`getVersion()` Deprecated. This method is internal and only exists for compatibility with older applications. New applications should never call this method.
`String`	`getXmlEncoding()` DOM Level 3 WD - Experimental.
`boolean`	`getXmlStandalone()` DOM Level 3 WD - Experimental.
`String`	`getXmlVersion()` DOM Level 3 WD - Experimental.
`Node`	`importNode(Node source, boolean deep)` Copies a node from another document to this document.
`Node`	`insertBefore(Node newChild, Node refChild)` Since a Document may contain at most one top-level Element child, and at most one DocumentType declaraction, we need to subclass our add-children methods to implement this constraint.
`protected boolean`	`isKidOK(Node parent, Node child)` Uses the kidOK lookup table to check whether the proposed tree structure is legal.
`static boolean`	`isValidQName(String prefix, String local, boolean xml11Version)` Checks if the given qualified name is legal with respect to the version of XML to which this document must conform.
`static boolean`	`isXMLName(String s, boolean xml11Version)` Check the string against XML's definition of acceptable names for elements and attributes and so on using the XMLCharacterProperties utility class
`boolean`	`load(String uri)` DOM Level 3 WD - Experimental.
`boolean`	`loadXML(String source)` DOM Level 3 WD - Experimental.
`void`	`normalizeDocument()` DOM Level 3 WD - Experimental Normalize document.
`void`	`putIdentifier(String idName, Element element)` Registers an identifier name with a specified element node.
`Node`	`removeChild(Node oldChild)` Since insertBefore caches the docElement (and, currently, docType), removeChild has to know how to undo the cache REVISIT: According to the spec it is not allowed to alter neither the document element nor the document type in any way
`protected void`	`removeEventListener(NodeImpl node, String type, EventListener listener, boolean useCapture)`
`void`	`removeIdentifier(String idName)` Removes a previously registered element with the specified identifier name.
`Node`	`renameNode(Node n, String namespaceURI, String name)` DOM Level 3 WD - Experimental.
`Node`	`replaceChild(Node newChild, Node oldChild)` Since we cache the docElement (and, currently, docType), replaceChild has to update the cache REVISIT: According to the spec it is not allowed to alter neither the document element nor the document type in any way
`String`	`saveXML(Node node)` DOM Level 3 WD - Experimental.
`void`	`setAsync(boolean async)` DOM Level 3 WD - Experimental.
`void`	`setDocumentURI(String documentURI)` DOM Level 3 WD - Experimental.
`void`	`setEncoding(String value)` Deprecated. This method is internal and only exists for compatibility with older applications. New applications should never call this method.
`void`	`setErrorChecking(boolean check)` Sets whether the DOM implementation performs error checking upon operations.
`void`	`setInputEncoding(String value)` DOM Internal (Was a DOM L3 Core WD public interface method setActualEncoding ) An attribute specifying the actual encoding of this document.
`void`	`setStandalone(boolean value)` Deprecated. This method is internal and only exists for compatibility with older applications. New applications should never call this method.
`void`	`setStrictErrorChecking(boolean check)`
`void`	`setTextContent(String textContent)` This attribute returns the text content of this node and its descendants.
`protected void`	`setUserData(NodeImpl n, Object data)` NON-DOM: kept for backward compatibility Store user data related to a given node This is a place where we could use weak references! Indeed, the node here won't be GC'ed as long as some user data is attached to it, since the userData table will have a reference to the node.
`Object`	`setUserData(Node n, String key, Object data, UserDataHandler handler)` Associate an object to a key on this node.
`void`	`setVersion(String value)` Deprecated. This method is internal and only exists for compatibility with older applications. New applications should never call this method.
`void`	`setXmlEncoding(String value)` DOM Internal (Was a DOM L3 Core WD public interface method setXMLEncoding ) An attribute specifying, as part of the XML declaration, the encoding of this document.
`void`	`setXmlStandalone(boolean value)` DOM Level 3 CR - Experimental.
`void`	`setXmlVersion(String value)` DOM Level 3 CR - Experimental.
`protected void`	`undeferChildren(Node node)` Traverses the DOM Tree and expands deferred nodes and their children.

Methods inherited from class org.apache.xerces.dom.ParentNode
getChildNodes, getChildNodesUnoptimized, getFirstChild, getLastChild, getLength, hasChildNodes, isEqualNode, item, normalize, setOwnerDocument, setReadOnly, synchronizeChildren

Methods inherited from class org.apache.xerces.dom.ChildNode
getNextSibling, getParentNode, getPreviousSibling

Methods inherited from class org.apache.xerces.dom.NodeImpl
addEventListener, appendChild, compareDocumentPosition, compareTreePosition, dispatchEvent, getAttributes, getContainer, getLocalName, getNamespaceURI, getNodeValue, getPrefix, getReadOnly, getUserData, getUserData, getUserDataRecord, hasAttributes, isDefaultNamespace, isSameNode, isSupported, lookupNamespaceURI, lookupPrefix, needsSyncChildren, removeEventListener, setNodeValue, setPrefix, setUserData, setUserData, synchronizeData, toString

Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.w3c.dom.Node
appendChild, compareDocumentPosition, getAttributes, getChildNodes, getFirstChild, getLastChild, getLocalName, getNamespaceURI, getNextSibling, getNodeValue, getParentNode, getPrefix, getPreviousSibling, getUserData, hasAttributes, hasChildNodes, isDefaultNamespace, isEqualNode, isSameNode, isSupported, lookupNamespaceURI, lookupPrefix, normalize, setNodeValue, setPrefix, setUserData

Field Detail
- docType
```
protected DocumentTypeImpl docType
```
  Document type.
- docElement
```
protected ElementImpl docElement
```
  Document element.
- encoding
```
protected String encoding
```
  Experimental DOM Level 3 feature: Document encoding
- actualEncoding
```
protected String actualEncoding
```
  Experimental DOM Level 3 feature: Document actualEncoding
- version
```
protected String version
```
  Experimental DOM Level 3 feature: Document version
- standalone
```
protected boolean standalone
```
  Experimental DOM Level 3 feature: Document standalone
- fDocumentURI
```
protected String fDocumentURI
```
  Experimental DOM Level 3 feature: documentURI
- userData
```
protected Hashtable userData
```
  Table for user data attached to this document nodes.
- identifiers
```
protected Hashtable identifiers
```
  Identifiers.
- changes
```
protected int changes
```
  Number of alterations made to this document since its creation. Serves as a "dirty bit" so that live objects such as NodeList can recognize when an alteration has been made and discard its cached state information.
  Any method that alters the tree structure MUST cause or be accompanied by a call to changed(), to inform it that any outstanding NodeLists may have to be updated.
  (Required because NodeList is simultaneously "live" and integer- indexed -- a bad decision in the DOM's design.)
  Note that changes which do not affect the tree's structure -- changing the node's name, for example -- do _not_ have to call changed().
  Alternative implementation would be to use a cryptographic Digest value rather than a count. This would have the advantage that "harmless" changes (those producing equal() trees) would not force NodeList to resynchronize. Disadvantage is that it's slightly more prone to "false negatives", though that's the difference between "wildly unlikely" and "absurdly unlikely". IF we start maintaining digests, we should consider taking advantage of them. Note: This used to be done a node basis, so that we knew what subtree changed. But since only DeepNodeList really use this today, the gain appears to be really small compared to the cost of having an int on every (parent) node plus having to walk up the tree all the way to the root to mark the branch as changed everytime a node is changed. So we now have a single counter global to the document. It means that some objects may flush their cache more often than necessary, but this makes nodes smaller and only the document needs to be marked as changed.
- allowGrammarAccess
```
protected boolean allowGrammarAccess
```
  Allow grammar access.
- errorChecking
```
protected boolean errorChecking
```
  Bypass error checking.
- xmlVersionChanged
```
protected boolean xmlVersionChanged
```

Constructor Detail
- CoreDocumentImpl
```
public CoreDocumentImpl()
```
  NON-DOM: Actually creating a Document is outside the DOM's spec, since it has to operate in terms of a particular implementation.
- CoreDocumentImpl
```
public CoreDocumentImpl(boolean grammarAccess)
```
  Constructor.
- CoreDocumentImpl
```
public CoreDocumentImpl(DocumentType doctype)
```
  For DOM2 support. The createDocument factory method is in DOMImplementation.
- CoreDocumentImpl
```
public CoreDocumentImpl(DocumentType doctype,
                boolean grammarAccess)
```
  For DOM2 support.

Method Detail

getOwnerDocument
```
public final Document getOwnerDocument()
```
Description copied from class: ParentNode

Find the Document that this Node belongs to (the document in whose context the Node was created). The Node may or may not currently be part of that Document's actual contents.

Specified by:

getOwnerDocument in interface Node

Overrides:

getOwnerDocument in class ParentNode

getNodeType
```
public short getNodeType()
```
Returns the node type.

Specified by:

getNodeType in interface Node

Specified by:

getNodeType in class NodeImpl

getNodeName
```
public String getNodeName()
```
Returns the node name.

Specified by:

getNodeName in interface Node

Specified by:

getNodeName in class NodeImpl

cloneNode
```
public Node cloneNode(boolean deep)
```
Deep-clone a document, including fixing ownerDoc for the cloned children. Note that this requires bypassing the WRONG_DOCUMENT_ERR protection. I've chosen to implement it by calling importNode which is DOM Level 2.

Specified by:

cloneNode in interface Node

Overrides:

cloneNode in class ParentNode

Parameters:
deep - boolean, iff true replicate children

Returns:
org.w3c.dom.Node
See Also:
Example: Cloning a Text node will copy both the node and the text it contains. Example: Cloning something that has children -- Element or Attr, for example -- will _not_ clone those children unless a "deep clone" has been requested. A shallow clone of an Attr node will yield an empty Attr of the same name.
NOTE: Clones will always be read/write, even if the node being cloned is read-only, to permit applications using only the DOM API to obtain editable copies of locked portions of the tree.

cloneNode

protected void cloneNode(CoreDocumentImpl newdoc,
             boolean deep)

internal method to share code with subclass

insertBefore
```
public Node insertBefore(Node newChild,
                Node refChild)
                  throws DOMException
```
Since a Document may contain at most one top-level Element child, and at most one DocumentType declaraction, we need to subclass our add-children methods to implement this constraint. Since appendChild() is implemented as insertBefore(,null), altering the latter fixes both.
While I'm doing so, I've taken advantage of the opportunity to cache documentElement and docType so we don't have to search for them. REVISIT: According to the spec it is not allowed to alter neither the document element nor the document type in any way

Specified by:

insertBefore in interface Node

Overrides:

insertBefore in class ParentNode

Parameters:
newChild - The Node to be moved to our subtree. As a convenience feature, inserting a DocumentNode will instead insert all its children.
refChild - Current child which newChild should be placed immediately before. If refChild is null, the insertion occurs after all existing Nodes, like appendChild().

Returns:
newChild, in its new state (relocated, or emptied in the case of DocumentNode.)

Throws:

DOMException
See Also:
ParentNode

removeChild
```
public Node removeChild(Node oldChild)
                 throws DOMException
```
Since insertBefore caches the docElement (and, currently, docType), removeChild has to know how to undo the cache REVISIT: According to the spec it is not allowed to alter neither the document element nor the document type in any way

Specified by:

removeChild in interface Node

Overrides:

removeChild in class ParentNode

Returns:
oldChild, in its new state (removed).

Throws:

DOMException
See Also:
ParentNode

replaceChild
```
public Node replaceChild(Node newChild,
                Node oldChild)
                  throws DOMException
```
Since we cache the docElement (and, currently, docType), replaceChild has to update the cache REVISIT: According to the spec it is not allowed to alter neither the document element nor the document type in any way

Specified by:

replaceChild in interface Node

Overrides:

replaceChild in class ParentNode

Returns:
oldChild, in its new state (removed).

Throws:

DOMException
See Also:
ParentNode

getTextContent

public String getTextContent()
                      throws DOMException

Description copied from class: NodeImpl

This attribute returns the text content of this node and its descendants. When it is defined to be null, setting it has no effect. When set, any possible children this node may have are removed and replaced by a single Text node containing the string this attribute is set to. On getting, no serialization is performed, the returned string does not contain any markup. No whitespace normalization is performed, the returned string does not contain the element content whitespaces . Similarly, on setting, no parsing is performed either, the input string is taken as pure textual content.
The string returned is made of the text content of this node depending on its type, as defined below: /** This attribute returns the text content of this node and its descendants. When it is defined to be null, setting it has no effect. When set, any possible children this node may have are removed and replaced by a single Text node containing the string this attribute is set to. On getting, no serialization is performed, the returned string does not contain any markup. No whitespace normalization is performed, the returned string does not contain the element content whitespaces . Similarly, on setting, no parsing is performed either, the input string is taken as pure textual content.
The string returned is made of the text content of this node depending on its type, as defined below:

Node type	Content

Node type	Content
ELEMENT_NODE, ENTITY_NODE, ENTITY_REFERENCE_NODE, DOCUMENT_FRAGMENT_NODE	concatenation of the `textContent` attribute value of every child node, excluding COMMENT_NODE and PROCESSING_INSTRUCTION_NODE nodes
ATTRIBUTE_NODE, TEXT_NODE, CDATA_SECTION_NODE, COMMENT_NODE, PROCESSING_INSTRUCTION_NODE	`nodeValue`
DOCUMENT_NODE, DOCUMENT_TYPE_NODE, NOTATION_NODE	null

Specified by:: getTextContent in interface Node
Overrides:: getTextContent in class ParentNode
Throws:: DOMException - NO_MODIFICATION_ALLOWED_ERR: Raised when the node is readonly.

setTextContent

public void setTextContent(String textContent)
                    throws DOMException

Description copied from class: NodeImpl

Node type	Content
ELEMENT_NODE, ENTITY_NODE, ENTITY_REFERENCE_NODE, DOCUMENT_FRAGMENT_NODE	concatenation of the `textContent` attribute value of every child node, excluding COMMENT_NODE and PROCESSING_INSTRUCTION_NODE nodes
ATTRIBUTE_NODE, TEXT_NODE, CDATA_SECTION_NODE, COMMENT_NODE, PROCESSING_INSTRUCTION_NODE	`nodeValue`
DOCUMENT_NODE, DOCUMENT_TYPE_NODE, NOTATION_NODE	null

Specified by:: setTextContent in interface Node
Overrides:: setTextContent in class ParentNode
Throws:: DOMException - NO_MODIFICATION_ALLOWED_ERR: Raised when the node is readonly.

getFeature
```
public Object getFeature(String feature,
                String version)
```
Specified by:

getFeature in interface Node

Overrides:

getFeature in class NodeImpl

Since:

DOM Level 3

createAttribute
```
public Attr createAttribute(String name)
                     throws DOMException
```
Factory method; creates an Attribute having this Document as its OwnerDoc.

Specified by:

createAttribute in interface Document

Parameters:
name - The name of the attribute. Note that the attribute's value is _not_ established at the factory; remember to set it!

Throws:

DOMException(INVALID_NAME_ERR) - if the attribute name is not acceptable.

DOMException

createCDATASection
```
public CDATASection createCDATASection(String data)
                                throws DOMException
```
Factory method; creates a CDATASection having this Document as its OwnerDoc.

Specified by:

createCDATASection in interface Document

Parameters:
data - The initial contents of the CDATA

Throws:

DOMException(NOT_SUPPORTED_ERR) - for HTML documents. (HTML not yet implemented.)

DOMException

createComment
```
public Comment createComment(String data)
```
Factory method; creates a Comment having this Document as its OwnerDoc.

Specified by:

createComment in interface Document

Parameters:
data - The initial contents of the Comment.

createDocumentFragment
```
public DocumentFragment createDocumentFragment()
```
Factory method; creates a DocumentFragment having this Document as its OwnerDoc.

Specified by:

createDocumentFragment in interface Document

createElement
```
public Element createElement(String tagName)
                      throws DOMException
```
Factory method; creates an Element having this Document as its OwnerDoc.

Specified by:

createElement in interface Document

Parameters:
tagName - The name of the element type to instantiate. For XML, this is case-sensitive. For HTML, the tagName parameter may be provided in any case, but it must be mapped to the canonical uppercase form by the DOM implementation.

Throws:

DOMException(INVALID_NAME_ERR) - if the tag name is not acceptable.

DOMException

createEntityReference
```
public EntityReference createEntityReference(String name)
                                      throws DOMException
```
Factory method; creates an EntityReference having this Document as its OwnerDoc.

Specified by:

createEntityReference in interface Document

Parameters:
name - The name of the Entity we wish to refer to

Throws:

DOMException(NOT_SUPPORTED_ERR) - for HTML documents, where nonstandard entities are not permitted. (HTML not yet implemented.)

DOMException

createProcessingInstruction
```
public ProcessingInstruction createProcessingInstruction(String target,
                                                String data)
                                                  throws DOMException
```
Factory method; creates a ProcessingInstruction having this Document as its OwnerDoc.

Specified by:

createProcessingInstruction in interface Document

Parameters:
target - The target "processor channel"
data - Parameter string to be passed to the target.

Throws:

DOMException(INVALID_NAME_ERR) - if the target name is not acceptable.

DOMException(NOT_SUPPORTED_ERR) - for HTML documents. (HTML not yet implemented.)

DOMException

createTextNode
```
public Text createTextNode(String data)
```
Factory method; creates a Text node having this Document as its OwnerDoc.

Specified by:

createTextNode in interface Document

Parameters:
data - The initial contents of the Text.

getDoctype
```
public DocumentType getDoctype()
```
For XML, this provides access to the Document Type Definition. For HTML documents, and XML documents which don't specify a DTD, it will be null.

Specified by:

getDoctype in interface Document

getDocumentElement
```
public Element getDocumentElement()
```
Convenience method, allowing direct access to the child node which is considered the root of the actual document content. For HTML, where it is legal to have more than one Element at the top level of the document, we pick the one with the tagName "HTML". For XML there should be only one top-level (HTML not yet supported.)

Specified by:

getDocumentElement in interface Document

getElementsByTagName
```
public NodeList getElementsByTagName(String tagname)
```
Return a live collection of all descendent Elements (not just immediate children) having the specified tag name.

Specified by:

getElementsByTagName in interface Document

Parameters:
tagname - The type of Element we want to gather. "*" will be taken as a wildcard, meaning "all elements in the document."
See Also:
DeepNodeListImpl

getImplementation
```
public DOMImplementation getImplementation()
```
Retrieve information describing the abilities of this particular DOM implementation. Intended to support applications that may be using DOMs retrieved from several different sources, potentially with different underlying representations.

Specified by:

getImplementation in interface Document

setErrorChecking
```
public void setErrorChecking(boolean check)
```
Sets whether the DOM implementation performs error checking upon operations. Turning off error checking only affects the following DOM checks:
- Checking strings to make sure that all characters are legal XML characters
- Hierarchy checking such as allowed children, checks for cycles, etc.
Turning off error checking does not turn off the following checks:
- Read only checks
- Checks related to DOM events

setStrictErrorChecking
```
public void setStrictErrorChecking(boolean check)
```
Specified by:

setStrictErrorChecking in interface Document

getErrorChecking
```
public boolean getErrorChecking()
```
Returns true if the DOM implementation performs error checking.

getStrictErrorChecking
```
public boolean getStrictErrorChecking()
```
Specified by:

getStrictErrorChecking in interface Document

getInputEncoding
```
public String getInputEncoding()
```
DOM Level 3 CR - Experimental. (Was getActualEncoding) An attribute specifying the encoding used for this document at the time of the parsing. This is null when it is not known, such as when the Document was created in memory.

Specified by:

getInputEncoding in interface Document

Since:

DOM Level 3

setInputEncoding
```
public void setInputEncoding(String value)
```
DOM Internal (Was a DOM L3 Core WD public interface method setActualEncoding ) An attribute specifying the actual encoding of this document. This is null otherwise.
This attribute represents the property [character encoding scheme] defined in .

setXmlEncoding
```
public void setXmlEncoding(String value)
```
DOM Internal (Was a DOM L3 Core WD public interface method setXMLEncoding ) An attribute specifying, as part of the XML declaration, the encoding of this document. This is null when unspecified.

setEncoding
```
public void setEncoding(String value)
```
Deprecated. This method is internal and only exists for compatibility with older applications. New applications should never call this method.

getXmlEncoding
```
public String getXmlEncoding()
```
DOM Level 3 WD - Experimental. The encoding of this document (part of XML Declaration)

Specified by:

getXmlEncoding in interface Document

getEncoding
```
public String getEncoding()
```
Deprecated. This method is internal and only exists for compatibility with older applications. New applications should never call this method.

setXmlVersion
```
public void setXmlVersion(String value)
```
DOM Level 3 CR - Experimental. version - An attribute specifying, as part of the XML declaration, the version number of this document.

Specified by:

setXmlVersion in interface Document

setVersion
```
public void setVersion(String value)
```
Deprecated. This method is internal and only exists for compatibility with older applications. New applications should never call this method.

getXmlVersion
```
public String getXmlVersion()
```
DOM Level 3 WD - Experimental. The version of this document (part of XML Declaration)

Specified by:

getXmlVersion in interface Document

getVersion
```
public String getVersion()
```
Deprecated. This method is internal and only exists for compatibility with older applications. New applications should never call this method.

setXmlStandalone
```
public void setXmlStandalone(boolean value)
                      throws DOMException
```
DOM Level 3 CR - Experimental. Xmlstandalone - An attribute specifying, as part of the XML declaration, whether this document is standalone

Specified by:

setXmlStandalone in interface Document

Throws:

DOMException - NOT_SUPPORTED_ERR: Raised if this document does not support the "XML" feature.
Since:

DOM Level 3

setStandalone
```
public void setStandalone(boolean value)
```
Deprecated. This method is internal and only exists for compatibility with older applications. New applications should never call this method.

getXmlStandalone
```
public boolean getXmlStandalone()
```
DOM Level 3 WD - Experimental. standalone that specifies whether this document is standalone (part of XML Declaration)

Specified by:

getXmlStandalone in interface Document

getStandalone
```
public boolean getStandalone()
```
Deprecated. This method is internal and only exists for compatibility with older applications. New applications should never call this method.

getDocumentURI
```
public String getDocumentURI()
```
DOM Level 3 WD - Experimental. The location of the document or null if undefined.
Beware that when the Document supports the feature "HTML" , the href attribute of the HTML BASE element takes precedence over this attribute.

Specified by:

getDocumentURI in interface Document

Since:

DOM Level 3

renameNode

public Node renameNode(Node n,
              String namespaceURI,
              String name)
                throws DOMException

DOM Level 3 WD - Experimental. Renaming node

Specified by:: renameNode in interface Document
Throws:: DOMException

normalizeDocument
```
public void normalizeDocument()
```
DOM Level 3 WD - Experimental Normalize document.

Specified by:

normalizeDocument in interface Document

getDomConfig
```
public DOMConfiguration getDomConfig()
```
DOM Level 3 CR - Experimental The configuration used when Document.normalizeDocument is invoked.

Specified by:

getDomConfig in interface Document

Since:

DOM Level 3

getBaseURI
```
public String getBaseURI()
```
Returns the absolute base URI of this node or null if the implementation wasn't able to obtain an absolute URI. Note: If the URI is malformed, a null is returned.

Specified by:

getBaseURI in interface Node

Overrides:

getBaseURI in class NodeImpl

Returns:
The absolute base URI of this node or null.
Since:

DOM Level 3

setDocumentURI
```
public void setDocumentURI(String documentURI)
```
DOM Level 3 WD - Experimental.

Specified by:

setDocumentURI in interface Document

getAsync
```
public boolean getAsync()
```
DOM Level 3 WD - Experimental. Indicates whether the method load should be synchronous or asynchronous. When the async attribute is set to true the load method returns control to the caller before the document has completed loading. The default value of this property is false.
Setting the value of this attribute might throw NOT_SUPPORTED_ERR if the implementation doesn't support the mode the attribute is being set to. Should the DOM spec define the default value of this property? What if implementing both async and sync IO is impractical in some systems? 2001-09-14. default is false but we need to check with Mozilla and IE.

setAsync
```
public void setAsync(boolean async)
```
DOM Level 3 WD - Experimental. Indicates whether the method load should be synchronous or asynchronous. When the async attribute is set to true the load method returns control to the caller before the document has completed loading. The default value of this property is false.
Setting the value of this attribute might throw NOT_SUPPORTED_ERR if the implementation doesn't support the mode the attribute is being set to. Should the DOM spec define the default value of this property? What if implementing both async and sync IO is impractical in some systems? 2001-09-14. default is false but we need to check with Mozilla and IE.

abort
```
public void abort()
```
DOM Level 3 WD - Experimental. If the document is currently being loaded as a result of the method load being invoked the loading and parsing is immediately aborted. The possibly partial result of parsing the document is discarded and the document is cleared.

load
```
public boolean load(String uri)
```
DOM Level 3 WD - Experimental. Replaces the content of the document with the result of parsing the given URI. Invoking this method will either block the caller or return to the caller immediately depending on the value of the async attribute. Once the document is fully loaded a "load" event (as defined in [DOM Level 3 Events] , except that the Event.targetNode will be the document, not an element) will be dispatched on the document. If an error occurs, an implementation dependent "error" event will be dispatched on the document. If this method is called on a document that is currently loading, the current load is interrupted and the new URI load is initiated.
When invoking this method the parameters used in the DOMParser interface are assumed to have their default values with the exception that the parameters "entities" , "normalize-characters", "check-character-normalization" are set to "false".
The result of a call to this method is the same the result of a call to DOMParser.parseWithContext with an input stream referencing the URI that was passed to this call, the document as the context node, and the action ACTION_REPLACE_CHILDREN.

Parameters:
uri - The URI reference for the XML file to be loaded. If this is a relative URI, the base URI used by the implementation is implementation dependent.

Returns:
If async is set to true load returns true if the document load was successfully initiated. If an error occurred when initiating the document load, load returns false.If async is set to false load returns true if the document was successfully loaded and parsed. If an error occurred when either loading or parsing the URI, load returns false.

loadXML
```
public boolean loadXML(String source)
```
DOM Level 3 WD - Experimental. Replace the content of the document with the result of parsing the input string, this method is always synchronous.

Parameters:
source - A string containing an XML document.

Returns:
true if parsing the input string succeeded without errors, otherwise false.

saveXML
```
public String saveXML(Node node)
               throws DOMException
```
DOM Level 3 WD - Experimental. Save the document or the given node and all its descendants to a string (i.e. serialize the document or node).
The parameters used in the LSSerializer interface are assumed to have their default values when invoking this method.
The result of a call to this method is the same the result of a call to LSSerializer.writeToString with the document as the node to write.

Parameters:
node - Specifies what to serialize, if this parameter is null the whole document is serialized, if it's non-null the given node is serialized.

Returns:
The serialized document or null in case an error occurred.

Throws:

DOMException - WRONG_DOCUMENT_ERR: Raised if the node passed in as the node parameter is from an other document.

createDocumentType
```
public DocumentType createDocumentType(String qualifiedName,
                              String publicID,
                              String systemID)
                                throws DOMException
```
NON-DOM Factory method; creates a DocumentType having this Document as its OwnerDoc. (REC-DOM-Level-1-19981001 left the process of building DTD information unspecified.)

Parameters:
qualifiedName -
publicID -
systemID -

Throws:

DOMException(NOT_SUPPORTED_ERR) - for HTML documents, where DTDs are not permitted. (HTML not yet implemented.)

DOMException

createEntity
```
public Entity createEntity(String name)
                    throws DOMException
```
NON-DOM Factory method; creates an Entity having this Document as its OwnerDoc. (REC-DOM-Level-1-19981001 left the process of building DTD information unspecified.)

Parameters:
name - The name of the Entity we wish to provide a value for.

Throws:

DOMException(NOT_SUPPORTED_ERR) - for HTML documents, where nonstandard entities are not permitted. (HTML not yet implemented.)

DOMException

createNotation
```
public Notation createNotation(String name)
                        throws DOMException
```
NON-DOM Factory method; creates a Notation having this Document as its OwnerDoc. (REC-DOM-Level-1-19981001 left the process of building DTD information unspecified.)

Parameters:
name - The name of the Notation we wish to describe

Throws:

DOMException(NOT_SUPPORTED_ERR) - for HTML documents, where notations are not permitted. (HTML not yet implemented.)

DOMException

createElementDefinition
```
public ElementDefinitionImpl createElementDefinition(String name)
                                              throws DOMException
```
NON-DOM Factory method: creates an element definition. Element definitions hold default attribute values.

Throws:

DOMException

getNodeNumber
```
protected int getNodeNumber()
```
NON-DOM: Get the number associated with this document. Used to order documents in the implementation.

Overrides:

getNodeNumber in class NodeImpl

getNodeNumber
```
protected int getNodeNumber(Node node)
```
NON-DOM: Get a number associated with a node created with respect to this document. Needed for compareDocumentPosition when nodes are disconnected. This is only used on demand.

importNode
```
public Node importNode(Node source,
              boolean deep)
                throws DOMException
```
Copies a node from another document to this document. The new nodes are created using this document's factory methods and are populated with the data from the source's accessor methods defined by the DOM interfaces. Its behavior is otherwise similar to that of cloneNode.
According to the DOM specifications, document nodes cannot be imported and a NOT_SUPPORTED_ERR exception is thrown if attempted.

Specified by:

importNode in interface Document

Throws:

DOMException

adoptNode
```
public Node adoptNode(Node source)
```
DOM Level 3 WD - Experimental Change the node's ownerDocument, and its subtree, to this Document

Specified by:

adoptNode in interface Document

Parameters:
source - The node to adopt.
See Also:
importNode(org.w3c.dom.Node, boolean)

undeferChildren
```
protected void undeferChildren(Node node)
```
Traverses the DOM Tree and expands deferred nodes and their children.

getElementById
```
public Element getElementById(String elementId)
```
Introduced in DOM Level 2 Returns the Element whose ID is given by elementId. If no such element exists, returns null. Behavior is not defined if more than one element has this ID.
Note: The DOM implementation must have information that says which attributes are of type ID. Attributes with the name "ID" are not of type ID unless so defined. Implementations that do not know whether attributes are of type ID or not are expected to return null.

Specified by:

getElementById in interface Document

See Also:
getIdentifier(java.lang.String)

clearIdentifiers
```
protected final void clearIdentifiers()
```
Remove all identifiers from the ID table

putIdentifier
```
public void putIdentifier(String idName,
                 Element element)
```
Registers an identifier name with a specified element node. If the identifier is already registered, the new element node replaces the previous node. If the specified element node is null, removeIdentifier() is called.

See Also:
getIdentifier(java.lang.String), removeIdentifier(java.lang.String)

getIdentifier
```
public Element getIdentifier(String idName)
```
Returns a previously registered element with the specified identifier name, or null if no element is registered.

See Also:
putIdentifier(java.lang.String, org.w3c.dom.Element), removeIdentifier(java.lang.String)

removeIdentifier
```
public void removeIdentifier(String idName)
```
Removes a previously registered element with the specified identifier name.

See Also:
putIdentifier(java.lang.String, org.w3c.dom.Element), getIdentifier(java.lang.String)

getIdentifiers
```
public Enumeration getIdentifiers()
```
Returns an enumeration registered of identifier names.

createElementNS
```
public Element createElementNS(String namespaceURI,
                      String qualifiedName)
                        throws DOMException
```
Introduced in DOM Level 2.
Creates an element of the given qualified name and namespace URI. If the given namespaceURI is null or an empty string and the qualifiedName has a prefix that is "xml", the created element is bound to the predefined namespace "http://www.w3.org/XML/1998/namespace" [Namespaces].

Specified by:

createElementNS in interface Document

Parameters:
namespaceURI - The namespace URI of the element to create.
qualifiedName - The qualified name of the element type to instantiate.

Returns:
Element A new Element object with the following attributes:

Throws:

DOMException - INVALID_CHARACTER_ERR: Raised if the specified name contains an invalid character.

DOMException - NAMESPACE_ERR: Raised if the qualifiedName has a prefix that is "xml" and the namespaceURI is neither null nor an empty string nor "http://www.w3.org/XML/1998/namespace", or if the qualifiedName has a prefix different from "xml" and the namespaceURI is null or an empty string.
Since:

WD-DOM-Level-2-19990923

createElementNS
```
public Element createElementNS(String namespaceURI,
                      String qualifiedName,
                      String localpart)
                        throws DOMException
```
NON-DOM: a factory method used by the Xerces DOM parser to create an element.

Parameters:
namespaceURI - The namespace URI of the element to create.
qualifiedName - The qualified name of the element type to instantiate.
localpart - The local name of the attribute to instantiate.

Returns:
Element A new Element object with the following attributes:

Throws:

DOMException - INVALID_CHARACTER_ERR: Raised if the specified name contains an invalid character.

createAttributeNS
```
public Attr createAttributeNS(String namespaceURI,
                     String qualifiedName)
                       throws DOMException
```
Introduced in DOM Level 2.
Creates an attribute of the given qualified name and namespace URI. If the given namespaceURI is null or an empty string and the qualifiedName has a prefix that is "xml", the created element is bound to the predefined namespace "http://www.w3.org/XML/1998/namespace" [Namespaces].

Specified by:

createAttributeNS in interface Document

Parameters:
namespaceURI - The namespace URI of the attribute to create. When it is null or an empty string, this method behaves like createAttribute.
qualifiedName - The qualified name of the attribute to instantiate.

Returns:
Attr A new Attr object.

Throws:

DOMException - INVALID_CHARACTER_ERR: Raised if the specified name contains an invalid character.
Since:

WD-DOM-Level-2-19990923

createAttributeNS
```
public Attr createAttributeNS(String namespaceURI,
                     String qualifiedName,
                     String localpart)
                       throws DOMException
```
NON-DOM: a factory method used by the Xerces DOM parser to create an element.

Parameters:
namespaceURI - The namespace URI of the attribute to create. When it is null or an empty string, this method behaves like createAttribute.
qualifiedName - The qualified name of the attribute to instantiate.
localpart - The local name of the attribute to instantiate.

Returns:
Attr A new Attr object.

Throws:

DOMException - INVALID_CHARACTER_ERR: Raised if the specified name contains an invalid character.

getElementsByTagNameNS
```
public NodeList getElementsByTagNameNS(String namespaceURI,
                              String localName)
```
Introduced in DOM Level 2.
Returns a NodeList of all the Elements with a given local name and namespace URI in the order in which they would be encountered in a preorder traversal of the Document tree.

Specified by:

getElementsByTagNameNS in interface Document

Parameters:
namespaceURI - The namespace URI of the elements to match on. The special value "*" matches all namespaces. When it is null or an empty string, this method behaves like getElementsByTagName.
localName - The local name of the elements to match on. The special value "*" matches all local names.

Returns:
NodeList A new NodeList object containing all the matched Elements.
Since:

WD-DOM-Level-2-19990923

clone

public Object clone()
             throws CloneNotSupportedException

Clone.

Overrides:: clone in class Object
Throws:: CloneNotSupportedException

isXMLName
```
public static final boolean isXMLName(String s,
                boolean xml11Version)
```
Check the string against XML's definition of acceptable names for elements and attributes and so on using the XMLCharacterProperties utility class

isValidQName
```
public static final boolean isValidQName(String prefix,
                   String local,
                   boolean xml11Version)
```
Checks if the given qualified name is legal with respect to the version of XML to which this document must conform.

Parameters:
prefix - prefix of qualified name
local - local part of qualified name

isKidOK
```
protected boolean isKidOK(Node parent,
              Node child)
```
Uses the kidOK lookup table to check whether the proposed tree structure is legal.

changed
```
protected void changed()
```
Denotes that this node has changed.

Overrides:

changed in class NodeImpl

changes
```
protected int changes()
```
Returns the number of changes to this node.

Overrides:

changes in class NodeImpl

setUserData
```
public Object setUserData(Node n,
                 String key,
                 Object data,
                 UserDataHandler handler)
```
Associate an object to a key on this node. The object can later be retrieved from this node by calling getUserData with the same key.

Parameters:
n - The node to associate the object to.
key - The key to associate the object to.
data - The object to associate to the given key, or null to remove any existing association to that key.
handler - The handler to associate to that key, or null.

Returns:
Returns the DOMObject previously associated to the given key on this node, or null if there was none.
Since:

DOM Level 3 REVISIT: we could use a free list of UserDataRecord here

getUserData
```
public Object getUserData(Node n,
                 String key)
```
Retrieves the object associated to a key on a this node. The object must first have been set to this node by calling setUserData with the same key.

Parameters:
n - The node the object is associated to.
key - The key the object is associated to.

Returns:
Returns the DOMObject associated to the given key on this node, or null if there was none.
Since:

DOM Level 3

getUserDataRecord

protected Hashtable getUserDataRecord(Node n)

callUserDataHandlers
```
protected void callUserDataHandlers(Node n,
                        Node c,
                        short operation)
```
Call user data handlers when a node is deleted (finalized)

Parameters:
n - The node this operation applies to.
c - The copy node or null.
operation - The operation - import, clone, or delete.

checkNamespaceWF
```
protected final void checkNamespaceWF(String qname,
                    int colon1,
                    int colon2)
```
Call user data handlers to let them know the nodes they are related to are being deleted. The alternative would be to do that on Node but because the nodes are used as the keys we have a reference to them that prevents them from being gc'ed until the document is. At the same time, doing it here has the advantage of avoiding a finalize() method on Node, which would affect all nodes and not just the ones that have a user data.

checkDOMNSErr

protected final void checkDOMNSErr(String prefix,
                 String namespace)

checkQName
```
protected final void checkQName(String prefix,
              String local)
```
Checks if the given qualified name is legal with respect to the version of XML to which this document must conform.

Parameters:
prefix - prefix of qualified name
local - local part of qualified name

setUserData
```
protected void setUserData(NodeImpl n,
               Object data)
```
NON-DOM: kept for backward compatibility Store user data related to a given node This is a place where we could use weak references! Indeed, the node here won't be GC'ed as long as some user data is attached to it, since the userData table will have a reference to the node.

getUserData
```
protected Object getUserData(NodeImpl n)
```
NON-DOM: kept for backward compatibility Retreive user data related to a given node

addEventListener

protected void addEventListener(NodeImpl node,
                    String type,
                    EventListener listener,
                    boolean useCapture)

removeEventListener

protected void removeEventListener(NodeImpl node,
                       String type,
                       EventListener listener,
                       boolean useCapture)

copyEventListeners

protected void copyEventListeners(NodeImpl src,
                      NodeImpl tgt)

dispatchEvent

protected boolean dispatchEvent(NodeImpl node,
                    Event event)

Class CoreDocumentImpl

Field Summary

Fields inherited from class org.apache.xerces.dom.ParentNode

Fields inherited from class org.apache.xerces.dom.ChildNode

Fields inherited from class org.apache.xerces.dom.NodeImpl

Fields inherited from interface org.w3c.dom.Node

Constructor Summary

Method Summary

Methods inherited from class org.apache.xerces.dom.ParentNode

Methods inherited from class org.apache.xerces.dom.ChildNode

Methods inherited from class org.apache.xerces.dom.NodeImpl

Methods inherited from class java.lang.Object

Methods inherited from interface org.w3c.dom.Node

Field Detail

docType

docElement

encoding

actualEncoding

version

standalone

fDocumentURI

userData

identifiers

changes

allowGrammarAccess

errorChecking

xmlVersionChanged

Constructor Detail

CoreDocumentImpl

CoreDocumentImpl

CoreDocumentImpl

CoreDocumentImpl

Method Detail

getOwnerDocument

getNodeType

getNodeName

cloneNode

cloneNode

insertBefore

removeChild

replaceChild

getTextContent

setTextContent

getFeature

createAttribute

createCDATASection

createComment

createDocumentFragment

createElement

createEntityReference

createProcessingInstruction

createTextNode

getDoctype

getDocumentElement

getElementsByTagName

getImplementation

setErrorChecking

setStrictErrorChecking

getErrorChecking

getStrictErrorChecking

getInputEncoding

setInputEncoding

setXmlEncoding

setEncoding

getXmlEncoding

getEncoding

setXmlVersion

setVersion

getXmlVersion

getVersion

setXmlStandalone

setStandalone

getXmlStandalone

getStandalone

getDocumentURI

renameNode

normalizeDocument

getDomConfig

getBaseURI

setDocumentURI