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/*
 * Copyright (c) 1997, 2022 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.oracle.webservices.api.message;

import java.io.IOException;
import java.io.OutputStream;

import jakarta.xml.soap.SOAPException;
import jakarta.xml.soap.SOAPMessage;

/**
 * MessageContext represents a container of a SOAP message and all the properties
 * including the transport headers.
 *
 * MessageContext is a composite {@link PropertySet} that combines properties exposed from multiple
 * {@link PropertySet}s into one.
 *
 * 
 * This implementation allows one {@link PropertySet} to assemble
 * all properties exposed from other "satellite" {@link PropertySet}s.
 * (A satellite may itself be a {@link DistributedPropertySet}, so
 * in general this can form a tree.)
 *
 * @author [email protected]
 */
public interface MessageContext extends DistributedPropertySet {
    /**
     * Gets the SAAJ SOAPMessage representation of the SOAP message.
     *
     * @return The SOAPMessage
     */
    SOAPMessage getAsSOAPMessage() throws SOAPException;
    
    /**
     * Gets the SAAJ SOAPMessage representation of the SOAP message.
     * @deprecated use getAsSOAPMessage
     * @return The SOAPMessage
     */
    SOAPMessage getSOAPMessage() throws SOAPException;

    /**
     * Writes the XML infoset portion of this MessageContext
     * (from <soap:Envelope> to </soap:Envelope>).
     *
     * @param out
     *      Must not be null. The caller is responsible for closing the stream,
     *      not the callee.
     *
     * @return
     *      The MIME content type of the encoded message (such as "application/xml").
     *      This information is often ncessary by transport.
     *
     * @throws IOException
     *      if a {@link OutputStream} throws {@link IOException}.
     */
    ContentType writeTo( OutputStream out ) throws IOException;

    /*
      The version of {@link #writeTo(OutputStream)}
      that writes to NIO {@link ByteBuffer}.

      
      TODO: for the convenience of implementation, write
      an adapter that wraps {@link WritableByteChannel} to {@link OutputStream}.
     */
//  ContentType writeTo( WritableByteChannel buffer );
    
    /**
     * Gets the Content-type of this message. For an out-bound message that this getContentType() 
     * method returns a null, the Content-Type can be determined only by calling the writeTo
     * method to write the MessageContext to an OutputStream.
     * 
     * @return The MIME content type of this message
     */
    ContentType getContentType();
}