JDK14/Java14源码在线阅读

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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
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package com.sun.org.apache.xerces.internal.impl.xs.opti;
import org.w3c.dom.DOMException;
import org.w3c.dom.DOMImplementation;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;

/**
 * @xerces.internal
 *
 */
final class SchemaDOMImplementation implements DOMImplementation {

    private static final SchemaDOMImplementation singleton = new SchemaDOMImplementation();

    /** NON-DOM: Obtain and return the single shared object */
    public static DOMImplementation getDOMImplementation() {
        return singleton;
    }

    private SchemaDOMImplementation() {}

    public Document createDocument(String namespaceURI, String qualifiedName, DocumentType doctype)
            throws DOMException {
        throw new DOMException(DOMException.NOT_SUPPORTED_ERR, "Method not supported");
    }

    public DocumentType createDocumentType(String qualifiedName, String publicId, String systemId)
            throws DOMException {
        throw new DOMException(DOMException.NOT_SUPPORTED_ERR, "Method not supported");
    }

    public Object getFeature(String feature, String version) {
        if (singleton.hasFeature(feature, version)) {
            return singleton;
        }
        return null;
    }

    public boolean hasFeature(String feature, String version) {

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