## org.apache.xerces.dom
Class CoreDOMImplementationImpl

    java.lang.Object
      |
      +--org.apache.xerces.dom.CoreDOMImplementationImpl

All Implemented Interfaces:
  org.w3c.dom.DOMImplementation, org.w3c.dom.ls.DOMImplementationLS

Direct Known Subclasses:
  DOMImplementationImpl, PSVIDOMImplementationImpl, XSImplementationImpl

public class CoreDOMImplementationImpl
extends java.lang.Object
implements org.w3c.dom.DOMImplementation, org.w3c.dom.ls.DOMImplementationLS

The DOMImplementation class is description of a particular implementation of the Document Object Model. As such its data is static, shared by all instances of this implementation.

The DOM API requires that it be a real object rather than static methods. However, there's nothing that says it can't be a singleton, so that's how I've implemented it.

This particular class, along with CoreDocumentImpl, supports the DOM Core and Load/Save (Experimental). Optional modules are supported by the more complete DOMImplementation class along with DocumentImpl.

# INTERNAL:

  Usage of this class is not supported. It may be altered or removed at any time.

Since:
  PR-DOM-Level-1-19980818.
Version:
  $Id: CoreDOMImplementationImpl.java 571293 2007-08-30 20:16:22Z mrglavas $

Fields inherited from interface org.w3c.dom.ls.DOMImplementationLS
`MODE_ASYNCHRONOUS, MODE_SYNCHRONOUS`

Constructor Summary
`CoreDOMImplementationImpl()`

Method Summary
`protected int` `assignDocTypeNumber()` NON-DOM: increment document/doctype counter
`protected int` `assignDocumentNumber()` NON-DOM: increment document/doctype counter
`org.w3c.dom.Document` `createDocument(java.lang.String namespaceURI, java.lang.String qualifiedName, org.w3c.dom.DocumentType doctype)` Introduced in DOM Level 2.
`org.w3c.dom.DocumentType` `createDocumentType(java.lang.String qualifiedName, java.lang.String publicID, java.lang.String systemID)` Introduced in DOM Level 2.
`org.w3c.dom.ls.LSInput` `createLSInput()` DOM Level 3 LS CR - Experimental.
`org.w3c.dom.ls.LSOutput` `createLSOutput()` DOM Level 3 LS CR - Experimental.
`org.w3c.dom.ls.LSParser` `createLSParser(short mode, java.lang.String schemaType)` DOM Level 3 LS CR - Experimental.
`org.w3c.dom.ls.LSSerializer` `createLSSerializer()` DOM Level 3 LS CR - Experimental.
`static org.w3c.dom.DOMImplementation` `getDOMImplementation()` NON-DOM: Obtain and return the single shared object
`java.lang.Object` `getFeature(java.lang.String feature, java.lang.String version)` DOM Level 3 WD - Experimental.
`boolean` `hasFeature(java.lang.String feature, java.lang.String version)` Test if the DOM implementation supports a specific "feature" -- currently meaning language and level thereof.

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

Constructor Detail

### CoreDOMImplementationImpl

    public CoreDOMImplementationImpl()

Method Detail

### getDOMImplementation

    public static org.w3c.dom.DOMImplementation getDOMImplementation()

  NON-DOM: Obtain and return the single shared object

### hasFeature

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

  Test if the DOM implementation supports a specific "feature" -- currently meaning language and level thereof.
  Specified by:
    `hasFeature` in interface `org.w3c.dom.DOMImplementation`
  Parameters:
    `feature` - The package name of the feature to test. In Level 1, supported values are "HTML" and "XML" (case-insensitive). At this writing, org.apache.xerces.dom supports only XML.
    `version` - The version number of the feature being tested. This is interpreted as "Version of the DOM API supported for the specified Feature", and in Level 1 should be "1.0"
  Returns:
    true iff this implementation is compatible with the specified feature and version.

### createDocumentType

    public org.w3c.dom.DocumentType createDocumentType(java.lang.String qualifiedName,
                                                       java.lang.String publicID,
                                                       java.lang.String systemID)

  Introduced in DOM Level 2.

  Creates an empty DocumentType node.

  Specified by:
    `createDocumentType` in interface `org.w3c.dom.DOMImplementation`
  Parameters:
    `qualifiedName` - The qualified name of the document type to be created.
    `publicID` - The document type public identifier.
    `systemID` - The document type system identifier.
  Since:
    WD-DOM-Level-2-19990923

### createDocument

    public org.w3c.dom.Document createDocument(java.lang.String namespaceURI,
                                               java.lang.String qualifiedName,
                                               org.w3c.dom.DocumentType doctype)
                                        throws org.w3c.dom.DOMException

  Introduced in DOM Level 2.

  Creates an XML Document object of the specified type with its document element.

  Specified by:
    `createDocument` in interface `org.w3c.dom.DOMImplementation`
  Parameters:
    `namespaceURI` - The namespace URI of the document element to create, or null.
    `qualifiedName` - The qualified name of the document element to create.
    `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:
    Document A new Document object.
  Throws:
    `org.w3c.dom.DOMException` - WRONG_DOCUMENT_ERR: Raised if doctype has already been used with a different document.
  Since:
    WD-DOM-Level-2-19990923

### getFeature

    public java.lang.Object getFeature(java.lang.String feature,
                                       java.lang.String version)

  DOM Level 3 WD - Experimental.
  Specified by:
    `getFeature` in interface `org.w3c.dom.DOMImplementation`
  Following copied from interface: `org.w3c.dom.DOMImplementation`
  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.

### createLSParser

    public org.w3c.dom.ls.LSParser createLSParser(short mode,
                                                  java.lang.String schemaType)
                                           throws org.w3c.dom.DOMException

  DOM Level 3 LS CR - Experimental. Create a new `LSParser`. The newly constructed parser may then be configured by means of its `DOMConfiguration` object, and used to parse documents by means of its `parse` method.
  Specified by:
    `createLSParser` in interface `org.w3c.dom.ls.DOMImplementationLS`
  Parameters:
    `mode` - The `mode` argument is either `MODE_SYNCHRONOUS` or `MODE_ASYNCHRONOUS`, if `mode` is `MODE_SYNCHRONOUS` then the `LSParser` that is created will operate in synchronous mode, if it's `MODE_ASYNCHRONOUS` then the `LSParser` that is created will operate in asynchronous mode.
    `schemaType` - An absolute URI representing the type of the schema language used during the load of a `Document` using the newly created `LSParser`. Note that no lexical checking is done on the absolute URI. In order to create a `LSParser` for any kind of schema types (i.e. the LSParser will be free to use any schema found), use the value `null`.

    Note: For W3C XML Schema [XML Schema Part 1] , applications must use the value `"http://www.w3.org/2001/XMLSchema"`. For XML DTD [XML 1.0], applications must use the value `"http://www.w3.org/TR/REC-xml"`. Other Schema languages are outside the scope of the W3C and therefore should recommend an absolute URI in order to use this method.

  Returns:
    The newly created `LSParser` object. This `LSParser` is either synchronous or asynchronous depending on the value of the `mode` argument.

    Note: By default, the newly created `LSParser` does not contain a `DOMErrorHandler`, i.e. the value of the " error-handler" configuration parameter is `null`. However, implementations may provide a default error handler at creation time. In that case, the initial value of the `"error-handler"` configuration parameter on the new created `LSParser` contains a reference to the default error handler.

  Throws:
    `org.w3c.dom.DOMException` - NOT_SUPPORTED_ERR: Raised if the requested mode or schema type is not supported.

### createLSSerializer

    public org.w3c.dom.ls.LSSerializer createLSSerializer()

  DOM Level 3 LS CR - Experimental. Create a new `LSSerializer` object.
  Specified by:
    `createLSSerializer` in interface `org.w3c.dom.ls.DOMImplementationLS`
  Returns:
    The newly created `LSSerializer` object.

    Note: By default, the newly created `LSSerializer` has no `DOMErrorHandler`, i.e. the value of the `"error-handler"` configuration parameter is `null`. However, implementations may provide a default error handler at creation time. In that case, the initial value of the `"error-handler"` configuration parameter on the new created `LSSerializer` contains a reference to the default error handler.

### createLSInput

    public org.w3c.dom.ls.LSInput createLSInput()

  DOM Level 3 LS CR - Experimental. Create a new empty input source.
  Specified by:
    `createLSInput` in interface `org.w3c.dom.ls.DOMImplementationLS`
  Returns:
    The newly created input object.

### assignDocumentNumber

    protected int assignDocumentNumber()

  NON-DOM: increment document/doctype counter

### assignDocTypeNumber

    protected int assignDocTypeNumber()

  NON-DOM: increment document/doctype counter

### createLSOutput

    public org.w3c.dom.ls.LSOutput createLSOutput()

  DOM Level 3 LS CR - Experimental. Create a new empty output destination object where `LSOutput.characterStream`, `LSOutput.byteStream`, `LSOutput.systemId`, `LSOutput.encoding` are null.
  Specified by:
    `createLSOutput` in interface `org.w3c.dom.ls.DOMImplementationLS`
  Returns:
    The newly created output object.

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