| /* |
| * Copyright (c) 1999, 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 javax.management; |
| |
| |
| /** |
| * <p>Represents attributes used as arguments to relational constraints, |
| * where the attribute must be in an MBean of a specified {@linkplain |
| * MBeanInfo#getClassName() class}. A QualifiedAttributeValueExp may be used |
| * anywhere a ValueExp is required. |
| * |
| * @serial include |
| * |
| * @since 1.5 |
| */ |
| class QualifiedAttributeValueExp extends AttributeValueExp { |
| |
| |
| /* Serial version */ |
| private static final long serialVersionUID = 8832517277410933254L; |
| |
| /** |
| * @serial The attribute class name |
| */ |
| private String className; |
| |
| |
| /** |
| * Basic Constructor. |
| * @deprecated see {@link AttributeValueExp#AttributeValueExp()} |
| */ |
| @Deprecated |
| public QualifiedAttributeValueExp() { |
| } |
| |
| /** |
| * Creates a new QualifiedAttributeValueExp representing the specified object |
| * attribute, named attr with class name className. |
| */ |
| public QualifiedAttributeValueExp(String className, String attr) { |
| super(attr); |
| this.className = className; |
| } |
| |
| |
| /** |
| * Returns a string representation of the class name of the attribute. |
| */ |
| public String getAttrClassName() { |
| return className; |
| } |
| |
| /** |
| * Applies the QualifiedAttributeValueExp to an MBean. |
| * |
| * @param name The name of the MBean on which the QualifiedAttributeValueExp will be applied. |
| * |
| * @return The ValueExp. |
| * |
| * @exception BadStringOperationException |
| * @exception BadBinaryOpValueExpException |
| * @exception BadAttributeValueExpException |
| * @exception InvalidApplicationException |
| */ |
| @Override |
| public ValueExp apply(ObjectName name) throws BadStringOperationException, BadBinaryOpValueExpException, |
| BadAttributeValueExpException, InvalidApplicationException { |
| try { |
| MBeanServer server = QueryEval.getMBeanServer(); |
| String v = server.getObjectInstance(name).getClassName(); |
| |
| if (v.equals(className)) { |
| return super.apply(name); |
| } |
| throw new InvalidApplicationException("Class name is " + v + |
| ", should be " + className); |
| |
| } catch (Exception e) { |
| throw new InvalidApplicationException("Qualified attribute: " + e); |
| /* Can happen if MBean disappears between the time we |
| construct the list of MBeans to query and the time we |
| evaluate the query on this MBean, or if |
| getObjectInstance throws SecurityException. */ |
| } |
| } |
| |
| /** |
| * Returns the string representing its value |
| */ |
| @Override |
| public String toString() { |
| if (className != null) { |
| return className + "." + super.toString(); |
| } else { |
| return super.toString(); |
| } |
| } |
| |
| } |