content: /*
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
   * particular file as subject to the "Classpath" exception as provided
   * by Oracle in the LICENSE file that accompanied this code.
   *
   * This code is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   * version 2 for more details (a copy is included in the LICENSE file that
   * accompanied this code).
   *
   * You should have received a copy of the GNU General Public License version
   * 2 along with this work; if not, write to the Free Software Foundation,
   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   * or visit www.oracle.com if you need additional information or have any
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  /*
   * This file is available under and governed by the GNU General Public
   * License version 2 only, as published by the Free Software Foundation.
   * However, the following notice accompanied the original version of this
   * file and, per its terms, should not be removed:
   *
   * Copyright (c) 2004 World Wide Web Consortium,
   *
   * (Massachusetts Institute of Technology, European Research Consortium for
   * Informatics and Mathematics, Keio University). All Rights Reserved. This
   * work is distributed under the W3C(r) Software License [1] in the hope that
   * it will be useful, but WITHOUT ANY WARRANTY; without even the implied
   * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   *
   * [1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231
   */
  
  package org.w3c.dom;
  
  import org.w3c.dom.DOMException;
  import org.w3c.dom.Document;
  import org.w3c.dom.DocumentType;
  
  /**
   * The <code>DOMImplementation</code> interface provides a number of methods
   * for performing operations that are independent of any particular instance
   * of the document object model.
   * <p>See also the <a href='http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407'>Document Object Model (DOM) Level 3 Core Specification</a>.
   */
  public interface DOMImplementation {
      /**
       * Test if the DOM implementation implements a specific feature and
       * version, as specified in <a href="http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/core.html#DOMFeatures">DOM Features</a>.
       * @param feature  The name of the feature to test.
       * @param version  This is the version number of the feature to test.
       * @return <code>true</code> if the feature is implemented in the
       *   specified version, <code>false</code> otherwise.
       */
      public boolean hasFeature(String feature,
                                String version);
  
      /**
       * Creates an empty <code>DocumentType</code> node. Entity declarations
       * and notations are not made available. Entity reference expansions and
       * default attribute additions do not occur..
       * @param qualifiedName The qualified name of the document type to be
       *   created.
       * @param publicId The external subset public identifier.
       * @param systemId The external subset system identifier.
       * @return A new <code>DocumentType</code> node with
       *   <code>Node.ownerDocument</code> set to <code>null</code>.
       * @exception org.w3c.dom.DOMException
       *   INVALID_CHARACTER_ERR: Raised if the specified qualified name is not
       *   an XML name according to [<a href='http://www.w3.org/TR/2004/REC-xml-20040204'>XML 1.0</a>].
       *   <br>NAMESPACE_ERR: Raised if the <code>qualifiedName</code> is
       *   malformed.
       *   <br>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 [<a href='http://www.w3.org/TR/1999/REC-html401-19991224/'>HTML 4.01</a>]).
       * @since DOM Level 2
       */
      public org.w3c.dom.DocumentType createDocumentType(String qualifiedName,
                                                         String publicId,
                                                         String systemId)
                                             throws org.w3c.dom.DOMException;
  
      /**
       * Creates a DOM Document object of the specified type with its document
       * element.
       * <br>Note that based on the <code>DocumentType</code> given to create
       * the document, the implementation may instantiate specialized
       * <code>Document</code> objects that support additional features than
       * the "Core", such as "HTML" [<a href='http://www.w3.org/TR/2003/REC-DOM-Level-2-HTML-20030109'>DOM Level 2 HTML</a>]
       * . On the other hand, setting the <code>DocumentType</code> after the
       * document was created makes this very unlikely to happen.
       * Alternatively, specialized <code>Document</code> creation methods,
       * such as <code>createHTMLDocument</code> [<a href='http://www.w3.org/TR/2003/REC-DOM-Level-2-HTML-20030109'>DOM Level 2 HTML</a>]
       * , can be used to obtain specific types of <code>Document</code>
       * objects.
       * @param namespaceURI The namespace URI of the document element to
       *   create or <code>null</code>.
       * @param qualifiedName The qualified name of the document element to be
       *   created or <code>null</code>.
       * @param doctype The type of document to be created or <code>null</code>.
       *   When <code>doctype</code> is not <code>null</code>, its
       *   <code>Node.ownerDocument</code> attribute is set to the document
       *   being created.
       * @return A new <code>Document</code> object with its document element.
       *   If the <code>NamespaceURI</code>, <code>qualifiedName</code>, and
       *   <code>doctype</code> are <code>null</code>, the returned
       *   <code>Document</code> is empty with no document element.
       * @exception org.w3c.dom.DOMException
       *   INVALID_CHARACTER_ERR: Raised if the specified qualified name is not
       *   an XML name according to [<a href='http://www.w3.org/TR/2004/REC-xml-20040204'>XML 1.0</a>].
       *   <br>NAMESPACE_ERR: Raised if the <code>qualifiedName</code> is
       *   malformed, if the <code>qualifiedName</code> has a prefix and the
       *   <code>namespaceURI</code> is <code>null</code>, or if the
       *   <code>qualifiedName</code> is <code>null</code> and the
       *   <code>namespaceURI</code> is different from <code>null</code>, or
       *   if the <code>qualifiedName</code> has a prefix that is "xml" and
       *   the <code>namespaceURI</code> is different from "<a href='http://www.w3.org/XML/1998/namespace'>
       *   http://www.w3.org/XML/1998/namespace</a>" [<a href='http://www.w3.org/TR/1999/REC-xml-names-19990114/'>XML Namespaces</a>]
       *   , or if the DOM implementation does not support the
       *   <code>"XML"</code> feature but a non-null namespace URI was
       *   provided, since namespaces were defined by XML.
       *   <br>WRONG_DOCUMENT_ERR: Raised if <code>doctype</code> has already
       *   been used with a different document or was created from a different
       *   implementation.
       *   <br>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 [<a href='http://www.w3.org/TR/1999/REC-html401-19991224/'>HTML 4.01</a>]).
       * @since DOM Level 2
       */
      public Document createDocument(String namespaceURI,
                                     String qualifiedName,
                                     DocumentType doctype)
                                     throws DOMException;
  
      /**
       *  This method returns a specialized object which implements the
       * specialized APIs of the specified feature and version, as specified
       * in <a href="http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/core.html#DOMFeatures">DOM Features</a>. The specialized object may also be obtained by using
       * binding-specific casting methods but is not necessarily expected to,
       * as discussed in . This method also allow the implementation to
       * provide specialized objects which do not support the
       * <code>DOMImplementation</code> interface.
       * @param 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.
       * @param version  This is the version number of the feature to test.
       * @return  Returns an object which implements the specialized APIs of
       *   the specified feature and version, if any, or <code>null</code> if
       *   there is no object which implements interfaces associated with that
       *   feature. If the <code>DOMObject</code> returned by this method
       *   implements the <code>DOMImplementation</code> interface, it must
       *   delegate to the primary core <code>DOMImplementation</code> and not
       *   return results inconsistent with the primary core
       *   <code>DOMImplementation</code> such as <code>hasFeature</code>,
       *   <code>getFeature</code>, etc.
       * @since DOM Level 3
       */
      public Object getFeature(String feature,
                               String version);
  
  }
  