org.w3c.dom
public interface DOMImplementation
DOMImplementation
interface provides a number of methods
for performing operations that are independent of any particular instance
of the document object model.
See also the Document Object Model (DOM) Level 3 Core Specification.
Method Summary | |
---|---|
Document | createDocument(String namespaceURI, String qualifiedName, DocumentType doctype)
Creates a DOM Document object of the specified type with its document
element.
|
DocumentType | createDocumentType(String qualifiedName, String publicId, String systemId)
Creates an empty DocumentType node. |
Object | getFeature(String feature, String version)
This method returns a specialized object which implements the
specialized APIs of the specified feature and version, as specified
in . |
boolean | hasFeature(String feature, String version)
Test if the DOM implementation implements a specific feature and
version, as specified in . |
DocumentType
given to create
the document, the implementation may instantiate specialized
Document
objects that support additional features than
the "Core", such as "HTML" [DOM Level 2 HTML]
. On the other hand, setting the DocumentType
after the
document was created makes this very unlikely to happen.
Alternatively, specialized Document
creation methods,
such as createHTMLDocument
[DOM Level 2 HTML]
, can be used to obtain specific types of Document
objects.Parameters: namespaceURI The namespace URI of the document element to
create or null
. qualifiedName The qualified name of the document element to be
created or null
. doctype The type of document to be created or null
.
When doctype
is not null
, its
Node.ownerDocument
attribute is set to the document
being created.
Returns: A new Document
object with its document element.
If the NamespaceURI
, qualifiedName
, and
doctype
are null
, the returned
Document
is empty with no document element.
Throws: DOMException
INVALID_CHARACTER_ERR: Raised if the specified qualified name is not
an XML name according to [XML 1.0].
NAMESPACE_ERR: Raised if the qualifiedName
is
malformed, if the qualifiedName
has a prefix and the
namespaceURI
is null
, or if the
qualifiedName
is null
and the
namespaceURI
is different from null
, or
if the qualifiedName
has a prefix that is "xml" and
the namespaceURI
is different from "
http://www.w3.org/XML/1998/namespace" [XML Namespaces]
, or if the DOM implementation does not support the
"XML"
feature but a non-null namespace URI was
provided, since namespaces were defined by XML.
WRONG_DOCUMENT_ERR: Raised if doctype
has already
been used with a different document or was created from a different
implementation.
NOT_SUPPORTED_ERR: May be raised if the implementation does not
support the feature "XML" and the language exposed through the
Document does not support XML Namespaces (such as [HTML 4.01]).
Since: DOM Level 2
DocumentType
node. Entity declarations
and notations are not made available. Entity reference expansions and
default attribute additions do not occur..Parameters: qualifiedName The qualified name of the document type to be created. publicId The external subset public identifier. systemId The external subset system identifier.
Returns: A new DocumentType
node with
Node.ownerDocument
set to null
.
Throws: DOMException
INVALID_CHARACTER_ERR: Raised if the specified qualified name is not
an XML name according to [XML 1.0].
NAMESPACE_ERR: Raised if the qualifiedName
is
malformed.
NOT_SUPPORTED_ERR: May be raised if the implementation does not
support the feature "XML" and the language exposed through the
Document does not support XML Namespaces (such as [HTML 4.01]).
Since: DOM Level 2
DOMImplementation
interface.Parameters: feature The name of the feature requested. Note that any plus sign "+" prepended to the name of the feature will be ignored since it is not significant in the context of this method. version This is the version number of the feature to test.
Returns: Returns an object which implements the specialized APIs of
the specified feature and version, if any, or null
if
there is no object which implements interfaces associated with that
feature. If the DOMObject
returned by this method
implements the DOMImplementation
interface, it must
delegate to the primary core DOMImplementation
and not
return results inconsistent with the primary core
DOMImplementation
such as hasFeature
,
getFeature
, etc.
Since: DOM Level 3
Parameters: feature The name of the feature to test. version This is the version number of the feature to test.
Returns: true
if the feature is implemented in the
specified version, false
otherwise.