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 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
 * 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.
 *
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package com.sun.tools.internal.ws.wsdl.parser;

import com.sun.tools.internal.ws.api.wsdl.TWSDLExtensible;
import com.sun.tools.internal.ws.api.wsdl.TWSDLExtensionHandler;
import com.sun.tools.internal.ws.api.wsdl.TWSDLParserContext;
import com.sun.tools.internal.ws.wsdl.document.mime.MIMEConstants;
import org.w3c.dom.Element;

import java.util.Collections;
import java.util.Map;

/**
 * An abstract implementation class of {@link TWSDLExtensionHandler}
 *
 * @author Vivek Pandey
 */
public abstract class AbstractExtensionHandler extends TWSDLExtensionHandler {
    private final Map<String, AbstractExtensionHandler> extensionHandlers;
    private final Map<String, AbstractExtensionHandler> unmodExtenHandlers;

    public AbstractExtensionHandler(Map<String, AbstractExtensionHandler> extensionHandlerMap) {
        this.extensionHandlers = extensionHandlerMap;
        this.unmodExtenHandlers = Collections.unmodifiableMap(extensionHandlers);
    }

    public Map<String, AbstractExtensionHandler> getExtensionHandlers(){
        return unmodExtenHandlers;
    }

    /**
     * Callback that gets called by the WSDL parser or any other extension handler on finding an extensibility element
     * that it can't understand.
     *
     * @param parent  The Parent element within which the extensibility element is defined
     * @param e       The extensibility elemenet
     * @return false if there was some error during the extension handling otherwise returns true. If returned false
     *         then the WSDL parser can abort if the wsdl extensibility element had <code>required</code> attribute set to true
     */
    public boolean doHandleExtension(TWSDLParserContext context, TWSDLExtensible parent, Element e) {
        if (parent.getWSDLElementName().equals(MIMEConstants.QNAME_PART)) {
            return handleMIMEPartExtension(context, parent, e);
        } else {
            return super.doHandleExtension(context, parent, e);
        }
    }

    /**
     * Callback for <code>wsdl:mime</code>
     *
     * @param context Parser context that will be passed on by the wsdl parser
     * @param parent  The Parent element within which the extensibility element is defined
     * @param e       The extensibility elemenet
     * @return false if there was some error during the extension handling otherwise returns true. If returned false
     *         then the WSDL parser can abort if the wsdl extensibility element had <code>required</code> attribute set to true
     */
    protected boolean handleMIMEPartExtension(TWSDLParserContext context, TWSDLExtensible parent, Element e){
        return false;
    }
}
