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 * regarding copyright ownership.  The ASF licenses this file   *
 * to you under the Apache License, Version 2.0 (the            *
 * "License"); you may not use this file except in compliance   *
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package org.apache.james.mailbox.model;

import java.util.Iterator;

import org.apache.james.mailbox.exception.MailboxException;

/**
 * A special {@link Iterator} which allows to access the {@link MailboxException} if one was thrown while try to lazy fetch the {@link MessageResult}'s in batches
 */
public interface MessageResultIterator extends Iterator<MessageResult> {

    /**
     * This method should get called after the {@link #hasNext()} method returns
     * <code>false</code>.
     * 
     * If it does not return <code>null</code> an error was thrown before while
     * try to lazy fetch th next batch of {@link MessageResult}'s
     * 
     * @return exception
     */
    MailboxException getException();

}
