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package com.sun.xml.internal.ws.api.message;

import com.sun.istack.internal.Nullable;

A set of Attachment on a Message. 

A particular attention is made to ensure that attachments
can be read and parsed lazily as requested.
See Also:
Message.getAttachments()/**
 * A set of {@link Attachment} on a {@link Message}.
 *
 * <p>
 * A particular attention is made to ensure that attachments
 * can be read and parsed lazily as requested.
 *
 * @see Message#getAttachments()
 */
public interface AttachmentSet extends Iterable<Attachment> {
    
Gets the attachment by the content ID.
Params:
contentId – 
     The content ID like "foo-bar-zot@abc.com", without
     surrounding '<' and '>' used as the transfer syntax.
Returns:
null
     if no such attachment exist./**
     * Gets the attachment by the content ID.
     *
     * @param contentId
     *      The content ID like "foo-bar-zot@abc.com", without
     *      surrounding '&lt;' and '>' used as the transfer syntax.
     *
     * @return null
     *      if no such attachment exist.
     */
    @Nullable
    Attachment get(String contentId);

    
Returns true if there's no attachment.
/**
     * Returns true if there's no attachment.
     */
    boolean isEmpty();

    
Adds an attachment to this set.
 Note that it's OK for an Attachment to belong to more than one AttachmentSet (which is in fact necessary when you wrap a Message into another. 
Params:
att – 
     must not be null./**
     * Adds an attachment to this set.
     *
     * <p>
     * Note that it's OK for an {@link Attachment} to belong to
     * more than one {@link AttachmentSet} (which is in fact
     * necessary when you wrap a {@link Message} into another.
     *
     * @param att
     *      must not be null.
     */
    public void add(Attachment att);

}