/** * Licensed under the Artistic License; you may not use this file * except in compliance with the License. * You may obtain a copy of the License at * *      http://displaytag.sourceforge.net/license.html * * THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. */package org.displaytag.exception;import org.apache.commons.lang.ArrayUtils;import org.displaytag.Messages;/** * Exception thrown when a required attribute is not set. This is thrown when the user is required to set at least one * of multiple attributes and the check can't be enforced by the tld. * @author Fabrizio Giustina * @version $Revision: 1081 $ ($Author: fgiust $) */public class MissingAttributeException extends BaseNestableJspTagException{    /**     * D1597A17A6.     */    private static final long serialVersionUID = 899149338534L;    /**     * list of tag attributes.     */    private final String[] attributes;    /**     * Constructor for MissingAttributeException.     * @param source Class where the exception is generated     * @param attributeNames String attribute name     */    public MissingAttributeException(Class source, String[] attributeNames)    {        super(source, Messages.getString("MissingAttributeException.msg", //$NON-NLS-1$            new Object[]{ArrayUtils.toString(attributeNames)}));        // copy attributes to allow them to be retrieved using getAttributeNames()        this.attributes = (String[]) ArrayUtils.clone(attributeNames);    }    /**     * @return SeverityEnum.ERROR     * @see org.displaytag.exception.BaseNestableJspTagException#getSeverity()     * @see org.displaytag.exception.SeverityEnum     */    public SeverityEnum getSeverity()    {        return SeverityEnum.ERROR;    }    /**     * returns an array containing the names of missing attributes.     * @return String[] array of missing attributes     */    public String[] getAttributeNames()    {        return (String[]) ArrayUtils.clone(this.attributes);    }}