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/*
 * Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Distribution License v. 1.0, which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

package com.sun.xml.ws.util.exception;

import com.sun.istack.localization.Localizable;
import com.sun.istack.localization.LocalizableMessage;
import com.sun.istack.localization.LocalizableMessageFactory;
import com.sun.istack.localization.Localizer;
import com.sun.istack.localization.NullLocalizable;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.Locale;
import java.util.ResourceBundle;
import javax.xml.ws.WebServiceException;

/**
 * Represents a {@link WebServiceException} with
 * localizable message.
 *
 * @author WS Development Team
 */
public abstract class JAXWSExceptionBase
    extends WebServiceException implements Localizable, LocalizableMessageFactory.ResourceBundleSupplier {

    //Don't worry about previous  serialVersionUID = 4818235090198755494L;, this class was not serializable before.
    private static final long serialVersionUID = 1L;

    private transient Localizable msg;

    /**
     * @param key
     * @param args
     * @deprecated Should use the localizable constructor instead.
     */
    @Deprecated
    protected JAXWSExceptionBase(String key, Object... args) {
        super(findNestedException(args));
        this.msg = new LocalizableMessage(getDefaultResourceBundleName(), this, key, args);
    }


    protected JAXWSExceptionBase(String message) {
        this(new NullLocalizable(message));
    }

    /**
     * Creates a new exception that wraps the specified exception.
     * @param throwable
     */
    protected JAXWSExceptionBase(Throwable throwable) {
        this(new NullLocalizable(throwable.toString()),throwable);
    }

    protected JAXWSExceptionBase(Localizable msg) {
        this.msg = msg;
    }

    protected JAXWSExceptionBase(Localizable msg, Throwable cause) {
        super(cause);
        this.msg = msg;
    }

    /**
     * @serialData Default fields,  followed by information in Localizable which comprises of.
     *  ResourceBundle name, then key and followed by arguments array.
     *  If there is no arguments array, then -1 is written.  If there is a argument array (possible of zero
     * length) then the array length is written as an integer, followed by each argument (Object).
     * If the Object is serializable, the argument is written. Otherwise the output of Object.toString()
     * is written.
     */
    private void writeObject(ObjectOutputStream out) throws IOException {
        // We have to call defaultWriteObject first.
        out.defaultWriteObject();

        out.writeObject(msg.getResourceBundleName());
        out.writeObject(msg.getKey());
        Object[] args = msg.getArguments();
        if (args == null) {
            out.writeInt(-1);
            return;
        }
        out.writeInt(args.length);
        // Write Object values for the parameters, if it is serializable otherwise write String form of it..
        for (int i = 0; i < args.length; i++) {
            if (args[i] == null || args[i] instanceof Serializable) {
                out.writeObject(args[i]);
            } else {
                out.writeObject(args[i].toString());
            }
        }
    }

    private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {
        // We have to call defaultReadObject first.
        in.defaultReadObject();
        Object[] args;
        String resourceBundleName = (String) in.readObject();
        String key = (String) in.readObject();
        int len = in.readInt();
        if (len == -1) {
            args = null;
        } else {
            args = new Object[len];
            for (int i = 0; i < args.length; i++) {
                args[i] = in.readObject();
            }
        }
        msg = new LocalizableMessageFactory(resourceBundleName).getMessage(key,args);
    }

    private static Throwable findNestedException(Object[] args) {
        if (args == null)
            return null;

        for( Object o : args )
            if(o instanceof Throwable)
                return (Throwable)o;
        return null;
    }

    @Override
    public String getMessage() {
        Localizer localizer = new Localizer();
        return localizer.localize(this);
    }

    /**
     * Gets the default resource bundle name for this kind of exception.
     * Used for {@link #JAXWSExceptionBase(String, Object[])}.
     * @return
     */
    protected abstract String getDefaultResourceBundleName();

//
// Localizable delegation
//
    @Override
    public final String getKey() {
        return msg.getKey();
    }

    @Override
    public final Object[] getArguments() {
        return msg.getArguments();
    }

    @Override
    public final String getResourceBundleName() {
        return msg.getResourceBundleName();
    }

    @Override
    public ResourceBundle getResourceBundle(Locale locale) {
        return ResourceBundle.getBundle(getDefaultResourceBundleName(), locale);
    }

}