1/* 2 * Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25package com.sun.beans.decoder; 26 27/** 28 * This class is intended to handle <char> element. 29 * This element specifies {@code char} values. 30 * The class {@link Character} is used as wrapper for these values. 31 * The result value is created from text of the body of this element. 32 * The body parsing is described in the class {@link StringElementHandler}. 33 * For example:<pre> 34 * <char>X</char></pre> 35 * which is equivalent to {@code Character.valueOf('X')} in Java code. 36 * <p>The following attributes are supported: 37 * <dl> 38 * <dt>code 39 * <dd>this attribute specifies character code 40 * <dt>id 41 * <dd>the identifier of the variable that is intended to store the result 42 * </dl> 43 * The {@code code} attribute can be used for characters 44 * that are illegal in XML document, for example:<pre> 45 * <char code="0"/></pre> 46 * 47 * @since 1.7 48 * 49 * @author Sergey A. Malenkov 50 */ 51final class CharElementHandler extends StringElementHandler { 52 53 /** 54 * Parses attributes of the element. 55 * The following attributes are supported: 56 * <dl> 57 * <dt>code 58 * <dd>this attribute specifies character code 59 * <dt>id 60 * <dd>the identifier of the variable that is intended to store the result 61 * </dl> 62 * 63 * @param name the attribute name 64 * @param value the attribute value 65 */ 66 @Override 67 public void addAttribute(String name, String value) { 68 if (name.equals("code")) { // NON-NLS: the attribute name 69 int code = Integer.decode(value); 70 for (char ch : Character.toChars(code)) { 71 addCharacter(ch); 72 } 73 } else { 74 super.addAttribute(name, value); 75 } 76 } 77 78 /** 79 * Creates {@code char} value from 80 * the text of the body of this element. 81 * 82 * @param argument the text of the body 83 * @return evaluated {@code char} value 84 */ 85 @Override 86 public Object getValue(String argument) { 87 if (argument.length() != 1) { 88 throw new IllegalArgumentException("Wrong characters count"); 89 } 90 return Character.valueOf(argument.charAt(0)); 91 } 92} 93