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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
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 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
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 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
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package com.sun.xml.ws.handler;

import com.sun.xml.ws.api.message.Attachment;
import com.sun.xml.ws.api.message.AttachmentSet;
import com.sun.xml.ws.api.message.Packet;
import com.sun.xml.ws.util.ReadOnlyPropertyException;

import javax.activation.DataHandler;
import javax.xml.ws.handler.MessageContext;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;

/**
 *
 * @author WS Development Team
 */

class MessageContextImpl implements MessageContext {
    private Map fallbackMap = null;
    private Set handlerScopeProps;
    Packet packet;


    void fallback() {
        if(fallbackMap == null) {
            fallbackMap = new HashMap();
            fallbackMap.putAll(packet.createMapView());
            fallbackMap.putAll(packet.invocationProperties);
        }
    }
    /** Creates a new instance of MessageContextImpl */
    public MessageContextImpl(Packet packet) {
        this.packet = packet;
        handlerScopeProps =  packet.getHandlerScopePropertyNames(false);
    }
    protected void updatePacket() {
        throw new UnsupportedOperationException("wrong call");
    }

    public void setScope(String name, Scope scope) {
        if(!containsKey(name))
            throw new IllegalArgumentException("Property " + name + " does not exist.");
        if(scope == Scope.APPLICATION) {
            handlerScopeProps.remove(name);
        } else {
            handlerScopeProps.add(name);

        }
    }

    public Scope getScope(String name) {
        if(!containsKey(name))
            throw new IllegalArgumentException("Property " + name + " does not exist.");
        if(handlerScopeProps.contains(name)) {
            return Scope.HANDLER;
        } else {
            return Scope.APPLICATION;
        }
    }

    public int size() {
        fallback();
        return fallbackMap.size();
    }

    public boolean isEmpty() {
        fallback();
        return fallbackMap.isEmpty();
    }

    public boolean containsKey(Object key) {
        if(fallbackMap == null) {
            if(packet.supports(key))
                return true;
            return packet.invocationProperties.containsKey(key);
        } else {
            fallback();
            return fallbackMap.containsKey(key);
        }
    }

    public boolean containsValue(Object value) {
        fallback();
        return fallbackMap.containsValue(value);
    }

    public Object put(String key, Object value) {
        if (fallbackMap == null) {
            if (packet.supports(key)) {
                return packet.put(key, value);     // strongly typed
            }
            if (!packet.invocationProperties.containsKey(key)) {
                //New property, default to Scope.HANDLER
                handlerScopeProps.add(key);
            }
            return packet.invocationProperties.put(key, value);

        } else {
            fallback();
            if (!fallbackMap.containsKey(key)) {
                //new property, default to Scope.HANDLER
                handlerScopeProps.add(key);
            }
            return fallbackMap.put(key, value);
        }
    }
    public Object get(Object key) {
        if(key == null)
            return null;
        Object value;
        if(fallbackMap == null) {
            if (packet.supports(key)) {
                value =  packet.get(key);    // strongly typed
            } else {
                value = packet.invocationProperties.get(key);
            }
        } else {
            fallback();
            value = fallbackMap.get(key);
        }
        //add the attachments from the Message to the corresponding attachment property
        if(key.equals(MessageContext.OUTBOUND_MESSAGE_ATTACHMENTS) ||
            key.equals(MessageContext.INBOUND_MESSAGE_ATTACHMENTS)){
            Map atts = (Map) value;
            if(atts == null)
                atts = new HashMap();
            AttachmentSet attSet = packet.getMessage().getAttachments();
            for(Attachment att : attSet){
                atts.put(att.getContentId(), att.asDataHandler());
            }
            return atts;
        }
        return value;
    }

    public void putAll(Map t) {
        fallback();
        for(String key: t.keySet()) {
            if(!fallbackMap.containsKey(key)) {
                //new property, default to Scope.HANDLER
                handlerScopeProps.add(key);
            }
        }
        fallbackMap.putAll(t);
    }

    public void clear() {
        fallback();
        fallbackMap.clear();
    }
    public Object remove(Object key){
        fallback();
        handlerScopeProps.remove(key);
        return fallbackMap.remove(key);
    }
    public Set keySet() {
        fallback();
        return fallbackMap.keySet();
    }
    public Set> entrySet(){
        fallback();
        return fallbackMap.entrySet();
    }
    public Collection