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/* * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */package com.sun.beans.decoder; /** * This class is intended to handle &lt;char&gt; element. * This element specifies {@code char} values. * The class {@link Character} is used as wrapper for these values. * The result value is created from text of the body of this element. * The body parsing is described in the class {@link StringElementHandler}. * For example:<pre> * &lt;char&gt;X&lt;/char&gt;</pre> * which is equivalent to {@code Character.valueOf('X')} in Java code. * <p>The following atributes are supported: * <dl> * <dt>code * <dd>this attribute specifies character code * <dt>id * <dd>the identifier of the variable that is intended to store the result * </dl> * The {@code code} attribute can be used for characters * that are illegal in XML document, for example:<pre> * &lt;char code="0"/&gt;</pre> * * @since 1.7 * * @author Sergey A. Malenkov */final class CharElementHandler extends StringElementHandler {     /**     * Parses attributes of the element.     * The following atributes are supported:     * <dl>     * <dt>code     * <dd>this attribute specifies character code     * <dt>id     * <dd>the identifier of the variable that is intended to store the result     * </dl>     *     * @param name   the attribute name     * @param value  the attribute value     */    @Override    public void addAttribute(String name, String value) {        if (name.equals("code")) { // NON-NLS: the attribute name            int code = Integer.decode(value);            for (char ch : Character.toChars(code)) {                addCharacter(ch);            }        } else {            super.addAttribute(name, value);        }    }     /**     * Creates {@code char} value from     * the text of the body of this element.     *     * @param argument  the text of the body     * @return evaluated {@code char} value     */    @Override    public Object getValue(String argument) {        if (argument.length() != 1) {            throw new IllegalArgumentException("Wrong characters count");        }        return Character.valueOf(argument.charAt(0));    }}