From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- .../javax/management/AttributeValueExp.java | 181 +++++++++++++++++++++ 1 file changed, 181 insertions(+) create mode 100644 libjava/classpath/javax/management/AttributeValueExp.java (limited to 'libjava/classpath/javax/management/AttributeValueExp.java') diff --git a/libjava/classpath/javax/management/AttributeValueExp.java b/libjava/classpath/javax/management/AttributeValueExp.java new file mode 100644 index 000000000..6e8f5fbd2 --- /dev/null +++ b/libjava/classpath/javax/management/AttributeValueExp.java @@ -0,0 +1,181 @@ +/* AttributeValueExp.java -- Represents attributes to be passed to queries. + Copyright (C) 2007 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package javax.management; + +/** + * Represents an attribute value being used as an argument + * to a relational constraint. + * + * @author Andrew John Hughes (gnu_andrew@member.fsf.org) + * @since 1.5 + */ +public class AttributeValueExp + implements ValueExp +{ + + /** + * Compatible with JDK 1.5 + */ + private static final long serialVersionUID = -7768025046539163385L; + + /** + * The name of the attribute. + */ + private String attr; + + /** + * Constructs a new {@link AttributeValueExp}. + * + * @deprecated An instance created with a null + * attribute name can not be used in a query. + */ + @Deprecated public AttributeValueExp() + { + } + + /** + * Constructs a new {@link AttributeValueExp} using the + * specified attribute. + * + * @param attr the name of the attribute whose value + * will be used for this expression. + */ + public AttributeValueExp(String attr) + { + this.attr = attr; + } + + /** + * Applies the {@link AttributeValueExp} to the specified + * management bean by obtaining the attribute value from + * the {@link MBeanServer} and using it to create a + * {@link StringValueExp}. + * + * @param name the {@link ObjectName} of the bean to obtain + * the value from. + * @return a {@link StringValueExp} containing the result. + * @throws BadStringOperationException if an invalid string + * operation is used by + * the value expression. + * @throws BadBinaryOpValueExpException if an invalid expression + * is used by the value expression. + * @throws BadAttributeValueExpException if an invalid attribute + * is used by the value expression. + * @throws InvalidApplicationException if the value expression is applied + * to the wrong type of bean. + */ + public ValueExp apply(ObjectName name) + throws BadStringOperationException, BadBinaryOpValueExpException, + BadAttributeValueExpException, InvalidApplicationException + { + Object val = getAttribute(name); + if (val == null || !(val instanceof String)) + throw new BadAttributeValueExpException(val); + return new StringValueExp((String) val); + } + + /** + * Returns the value of the attribute by calling the + * {@link MBeanServer#getAttribute(ObjectName)} method of + * the server returned by {@link QueryEval#getMBeanServer()}. + * If an exception occurs, null is returned. + * + * @param name the {@link ObjectName} of the bean to obtain + * the value from. + * @return a {@link StringValueExp} containing the result. + */ + protected Object getAttribute(ObjectName name) + { + try + { + return QueryEval.getMBeanServer().getAttribute(name, attr); + } + catch (NullPointerException e) + { + return null; + } + catch (MBeanException e) + { + return null; + } + catch (AttributeNotFoundException e) + { + return null; + } + catch (InstanceNotFoundException e) + { + return null; + } + catch (ReflectionException e) + { + return null; + } + } + + /** + * Returns the attribute name. + * + * @return the attribute name. + */ + public String getAttributeName() + { + return attr; + } + + /** + * Sets the {@link MBeanServer} on which the query + * will be performed. + * + * @param server the new server. + */ + public void setMBeanServer(MBeanServer server) + { + /* This seems to do nothing any more */ + } + + /** + * Returns the attribute name, quoted. + * + * @return the quoted attribute name. + */ + public String toString() + { + return "'" + attr + "'"; + } + +} -- cgit v1.2.3