| /* |
| * 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 <var> element. |
| * This element retrieves the value of specified variable. |
| * For example:<pre> |
| * <var id="id1" idref="id2"/></pre> |
| * is equivalent to {@code id1 = id2} in Java code. |
| * <p>The following atributes are supported: |
| * <dl> |
| * <dt>idref |
| * <dd>the identifier to refer to the variable |
| * <dt>id |
| * <dd>the identifier of the variable that is intended to store the result |
| * </dl> |
| * |
| * @since 1.7 |
| * |
| * @author Sergey A. Malenkov |
| */ |
| final class VarElementHandler extends ElementHandler { |
| private ValueObject value; |
| |
| /** |
| * Parses attributes of the element. |
| * The following atributes are supported: |
| * <dl> |
| * <dt>idref |
| * <dd>the identifier to refer to the variable |
| * <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("idref")) { // NON-NLS: the attribute name |
| this.value = ValueObjectImpl.create(getVariable(value)); |
| } else { |
| super.addAttribute(name, value); |
| } |
| } |
| |
| /** |
| * Returns the value of this element. |
| * |
| * @return the value of this element |
| */ |
| @Override |
| protected ValueObject getValueObject() { |
| if (this.value == null) { |
| throw new IllegalArgumentException("Variable name is not set"); |
| } |
| return this.value; |
| } |
| } |