| /* |
| * reserved comment block |
| * DO NOT REMOVE OR ALTER! |
| */ |
| /* |
| * Copyright 2001, 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 com.sun.org.apache.xerces.internal.dom; |
| |
| import com.sun.org.apache.xerces.internal.impl.xs.XSImplementationImpl; |
| import org.w3c.dom.DOMImplementationList; |
| import org.w3c.dom.DOMImplementation; |
| import java.util.Vector; |
| |
| /** |
| * Allows to retrieve <code>XSImplementation</code>, DOM Level 3 Core and LS implementations |
| * and PSVI implementation. |
| * <p>See also the <a href='http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/core.html#DOMImplementationSource'>Document Object Model (DOM) Level 3 Core Specification</a>. |
| * |
| * @xerces.internal |
| * |
| * @author Elena Litani, IBM |
| */ |
| public class DOMXSImplementationSourceImpl |
| extends DOMImplementationSourceImpl { |
| |
| /** |
| * A method to request a DOM implementation. |
| * @param features A string that specifies which features are required. |
| * This is a space separated list in which each feature is specified |
| * by its name optionally followed by a space and a version number. |
| * This is something like: "XML 1.0 Traversal Events 2.0" |
| * @return An implementation that has the desired features, or |
| * <code>null</code> if this source has none. |
| */ |
| public DOMImplementation getDOMImplementation(String features) { |
| DOMImplementation impl = super.getDOMImplementation(features); |
| if (impl != null){ |
| return impl; |
| } |
| // if not try the PSVIDOMImplementation |
| impl = PSVIDOMImplementationImpl.getDOMImplementation(); |
| if (testImpl(impl, features)) { |
| return impl; |
| } |
| // if not try the XSImplementation |
| impl = XSImplementationImpl.getDOMImplementation(); |
| if (testImpl(impl, features)) { |
| return impl; |
| } |
| |
| return null; |
| } |
| |
| /** |
| * A method to request a list of DOM implementations that support the |
| * specified features and versions, as specified in . |
| * @param features A string that specifies which features and versions |
| * are required. This is a space separated list in which each feature |
| * is specified by its name optionally followed by a space and a |
| * version number. This is something like: "XML 3.0 Traversal +Events |
| * 2.0" |
| * @return A list of DOM implementations that support the desired |
| * features. |
| */ |
| public DOMImplementationList getDOMImplementationList(String features) { |
| final Vector implementations = new Vector(); |
| |
| // first check whether the CoreDOMImplementation would do |
| DOMImplementationList list = super.getDOMImplementationList(features); |
| //Add core DOMImplementations |
| for (int i=0; i < list.getLength(); i++ ) { |
| implementations.addElement(list.item(i)); |
| } |
| |
| DOMImplementation impl = PSVIDOMImplementationImpl.getDOMImplementation(); |
| if (testImpl(impl, features)) { |
| implementations.addElement(impl); |
| } |
| |
| impl = XSImplementationImpl.getDOMImplementation(); |
| if (testImpl(impl, features)) { |
| implementations.addElement(impl); |
| } |
| return new DOMImplementationListImpl(implementations); |
| } |
| } |