/** * 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.util;import java.util.HashMap;import java.util.Iterator;import java.util.Map;import java.util.Set;/** * Extends Map providing only a different toString() method which can be used in printing attributes inside an html tag. * @author Fabrizio Giustina * @version $Revision: 1081 $ ($Author: fgiust $) */public class HtmlAttributeMap extends HashMap{    /**     * D1597A17A6.     */    private static final long serialVersionUID = 899149338534L;    /**     * Attribute value delimiter.     */    private static final char DELIMITER = '"';    /**     * character between name and value.     */    private static final char EQUALS = '=';    /**     * space before any attribute.     */    private static final char SPACE = ' ';    /**     * toString method: returns attributes in the format: attributename="attributevalue" attr2="attrValue2" ...     * @return String representation of the HtmlAttributeMap     */    public String toString()    {        // fast exit when no attribute are present        if (size() == 0)        {            return TagConstants.EMPTY_STRING;        }        // buffer extimated in number of attributes * 30        StringBuffer buffer = new StringBuffer(size() * 30);        // get the entrySet        Set entrySet = entrySet();        Iterator iterator = entrySet.iterator();        // iterates on attributes        while (iterator.hasNext())        {            Map.Entry entry = (Map.Entry) iterator.next();            // append a new atribute            buffer                .append(SPACE)                .append(entry.getKey())                .append(EQUALS)                .append(DELIMITER)                .append(entry.getValue())                .append(DELIMITER);        }        // return        return buffer.toString();    }}