| /* |
| * Copyright (c) 2008, 2013, 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; |
| |
| import java.beans.Expression; |
| |
| import static java.util.Locale.ENGLISH; |
| |
| /** |
| * This class is intended to handle <object> element. |
| * This element looks like <void> element, |
| * but its value is always used as an argument for element |
| * that contains this one. |
| * <p>The following attributes are supported: |
| * <dl> |
| * <dt>class |
| * <dd>the type is used for static methods and fields |
| * <dt>method |
| * <dd>the method name |
| * <dt>property |
| * <dd>the property name |
| * <dt>index |
| * <dd>the property index |
| * <dt>field |
| * <dd>the field name |
| * <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 |
| */ |
| class ObjectElementHandler extends NewElementHandler { |
| private String idref; |
| private String field; |
| private Integer index; |
| private String property; |
| private String method; |
| |
| /** |
| * Parses attributes of the element. |
| * The following attributes are supported: |
| * <dl> |
| * <dt>class |
| * <dd>the type is used for static methods and fields |
| * <dt>method |
| * <dd>the method name |
| * <dt>property |
| * <dd>the property name |
| * <dt>index |
| * <dd>the property index |
| * <dt>field |
| * <dd>the field name |
| * <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 final void addAttribute(String name, String value) { |
| if (name.equals("idref")) { // NON-NLS: the attribute name |
| this.idref = value; |
| } else if (name.equals("field")) { // NON-NLS: the attribute name |
| this.field = value; |
| } else if (name.equals("index")) { // NON-NLS: the attribute name |
| this.index = Integer.valueOf(value); |
| addArgument(this.index); // hack for compatibility |
| } else if (name.equals("property")) { // NON-NLS: the attribute name |
| this.property = value; |
| } else if (name.equals("method")) { // NON-NLS: the attribute name |
| this.method = value; |
| } else { |
| super.addAttribute(name, value); |
| } |
| } |
| |
| /** |
| * Calculates the value of this element |
| * if the field attribute or the idref attribute is set. |
| */ |
| @Override |
| public final void startElement() { |
| if ((this.field != null) || (this.idref != null)) { |
| getValueObject(); |
| } |
| } |
| |
| /** |
| * Tests whether the value of this element can be used |
| * as an argument of the element that contained in this one. |
| * |
| * @return {@code true} if the value of this element can be used |
| * as an argument of the element that contained in this one, |
| * {@code false} otherwise |
| */ |
| @Override |
| protected boolean isArgument() { |
| return true; // hack for compatibility |
| } |
| |
| /** |
| * Creates the value of this element. |
| * |
| * @param type the base class |
| * @param args the array of arguments |
| * @return the value of this element |
| * @throws Exception if calculation is failed |
| */ |
| @Override |
| protected final ValueObject getValueObject(Class<?> type, Object[] args) throws Exception { |
| if (this.field != null) { |
| return ValueObjectImpl.create(FieldElementHandler.getFieldValue(getContextBean(), this.field)); |
| } |
| if (this.idref != null) { |
| return ValueObjectImpl.create(getVariable(this.idref)); |
| } |
| Object bean = getContextBean(); |
| String name; |
| if (this.index != null) { |
| name = (args.length == 2) |
| ? PropertyElementHandler.SETTER |
| : PropertyElementHandler.GETTER; |
| } else if (this.property != null) { |
| name = (args.length == 1) |
| ? PropertyElementHandler.SETTER |
| : PropertyElementHandler.GETTER; |
| |
| if (0 < this.property.length()) { |
| name += this.property.substring(0, 1).toUpperCase(ENGLISH) + this.property.substring(1); |
| } |
| } else { |
| name = (this.method != null) && (0 < this.method.length()) |
| ? this.method |
| : "new"; // NON-NLS: the constructor marker |
| } |
| Expression expression = new Expression(bean, name, args); |
| return ValueObjectImpl.create(expression.getValue()); |
| } |
| } |