/* * @(#)ListMessagesTag.java	1.6 07/07/06 * * Copyright 2001-2007 Sun Microsystems, Inc. All Rights Reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * *   - Redistributions of source code must retain the above copyright *     notice, this list of conditions and the following disclaimer. * *   - Redistributions in binary form must reproduce the above copyright *     notice, this list of conditions and the following disclaimer in the *     documentation and/or other materials provided with the distribution. * *   - Neither the name of Sun Microsystems nor the names of its *     contributors may be used to endorse or promote products derived *     from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */package demo;import java.io.*;import java.util.*;import javax.mail.*;import javax.mail.internet.*;import javax.mail.search.*;import javax.servlet.jsp.*;import javax.servlet.jsp.tagext.*;/** * Custom tag for listing messages. The scripting variable is only * within the body of the tag. */public class ListMessagesTag extends BodyTagSupport {    private String folder;    private String session;    private int msgNum = 0;    private int messageCount = 0;    private Message message;    private Message[] messages;    private MessageInfo messageinfo;        /**     * folder attribute getter method.     */    public String getFolder() {        return folder;    }        /**     * session attribute getter method.     */    public String getSession() {        return session;    }        /**     * folder setter method.     */    public void setFolder(String folder) {        this.folder = folder;    }    /**     * session attribute setter method.     */    public void setSession(String session) {        this.session = session;    }    /**     * Method for processing the start of the tag.     */    public int doStartTag() throws JspException {        messageinfo = new MessageInfo();               try {            Folder folder = (Folder)pageContext.getAttribute(		getFolder(), PageContext.SESSION_SCOPE);            FlagTerm ft = new FlagTerm(new Flags(Flags.Flag.DELETED), false);            messages = folder.search(ft);            messageCount = messages.length;	    msgNum = 0;        } catch (Exception ex) {            throw new JspException(ex.getMessage());        }        if (messageCount > 0) {            getMessage();            return BodyTag.EVAL_BODY_TAG;        } else            return BodyTag.SKIP_BODY;    }       /**     * Method for processing the body content of the tag.     */    public int doAfterBody() throws JspException {                BodyContent body = getBodyContent();        try {            body.writeOut(getPreviousOut());        } catch (IOException e) {            throw new JspTagException("IterationTag: " + e.getMessage());        }                // clear up so the next time the body content is empty        body.clearBody();               if (msgNum < messageCount) {            getMessage();            return BodyTag.EVAL_BODY_TAG;        } else {            return BodyTag.SKIP_BODY;        }    }        /**     * Helper method for retrieving messages.     */    private void getMessage() throws JspException {        message = messages[msgNum++];        messageinfo.setMessage(message);        pageContext.setAttribute(getId(), messageinfo);    }}