jdk8u.jaxp.org.apache.xerces.external.dom.DOMImplementationImpl Maven / Gradle / Ivy
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/*
* Copyright 1999-2002,2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jdk8u.jaxp.org.apache.xerces.external.dom;
import org.w3c.dom.DOMException;
import org.w3c.dom.DOMImplementation;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
/**
* 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.
*
* @xerces.internal
*
* @since PR-DOM-Level-1-19980818.
*/
public class DOMImplementationImpl extends CoreDOMImplementationImpl
implements DOMImplementation {
//
// Data
//
// static
/** Dom implementation singleton. */
static DOMImplementationImpl singleton = new DOMImplementationImpl();
//
// Public methods
//
/** NON-DOM: Obtain and return the single shared object */
public static DOMImplementation getDOMImplementation() {
return singleton;
}
//
// DOMImplementation methods
//
/**
* Test if the DOM implementation supports a specific "feature" --
* currently meaning language and level thereof.
*
* @param feature The package name of the feature to test.
* In Level 1, supported values are "HTML" and "XML" (case-insensitive).
* At this writing, jdk8u.jaxp.org.apache.xerces.external.dom supports only XML.
*
* @param 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"
*
* @return true iff this implementation is compatable with the
* specified feature and version.
*/
public boolean hasFeature(String feature, String version) {
boolean result = super.hasFeature(feature, version);
if (!result) {
boolean anyVersion = version == null || version.length() == 0;
if (feature.startsWith("+")) {
feature = feature.substring(1);
}
return (
(feature.equalsIgnoreCase("Events")
&& (anyVersion || version.equals("2.0")))
|| (feature.equalsIgnoreCase("MutationEvents")
&& (anyVersion || version.equals("2.0")))
|| (feature.equalsIgnoreCase("Traversal")
&& (anyVersion || version.equals("2.0")))
|| (feature.equalsIgnoreCase("Range")
&& (anyVersion || version.equals("2.0")))
|| (feature.equalsIgnoreCase("MutationEvents")
&& (anyVersion || version.equals("2.0"))));
}
return result;
} // hasFeature(String,String):boolean
/**
* Introduced in DOM Level 2.
*
* Creates an XML Document object of the specified type with its document
* element.
*
* @param namespaceURI The namespace URI of the document
* element to create, or null.
* @param qualifiedName The qualified name of the document
* element to create.
* @param 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.
* @return Document A new Document object.
* @throws DOMException WRONG_DOCUMENT_ERR: Raised if doctype has
* already been used with a different document.
* @since WD-DOM-Level-2-19990923
*/
public Document createDocument(String namespaceURI,
String qualifiedName,
DocumentType doctype)
throws DOMException
{
if(namespaceURI == null && qualifiedName == null && doctype == null){
//if namespaceURI, qualifiedName and doctype are null, returned document is empty with
//no document element
return new DocumentImpl();
}
else if (doctype != null && doctype.getOwnerDocument() != null) {
String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "WRONG_DOCUMENT_ERR", null);
throw new DOMException(DOMException.WRONG_DOCUMENT_ERR, msg);
}
DocumentImpl doc = new DocumentImpl(doctype);
Element e = doc.createElementNS( namespaceURI, qualifiedName);
doc.appendChild(e);
return doc;
}
} // class DOMImplementationImpl