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/*
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* Copyright 2000-2008 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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package javax.management.openmbean;
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// java import
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//
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import java.lang.reflect.Array;
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import java.lang.reflect.Constructor;
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import java.lang.reflect.Method;
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import java.lang.reflect.Modifier;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.Map;
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import java.util.Set;
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import javax.management.Descriptor;
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import javax.management.DescriptorRead;
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import javax.management.ImmutableDescriptor;
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import javax.management.MBeanAttributeInfo;
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import com.sun.jmx.remote.util.EnvHelp;
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/**
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* Describes an attribute of an open MBean.
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*
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*
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* @since 1.5
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*/
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public class OpenMBeanAttributeInfoSupport
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extends MBeanAttributeInfo
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implements OpenMBeanAttributeInfo {
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/* Serial version */
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static final long serialVersionUID = -4867215622149721849L;
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/**
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* @serial The open mbean attribute's <i>open type</i>
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*/
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private OpenType<?> openType;
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/**
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* @serial The open mbean attribute's default value
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*/
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private final Object defaultValue;
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/**
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* @serial The open mbean attribute's legal values. This {@link
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* Set} is unmodifiable
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*/
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private final Set<?> legalValues; // to be constructed unmodifiable
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/**
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* @serial The open mbean attribute's min value
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*/
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private final Comparable<?> minValue;
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/**
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* @serial The open mbean attribute's max value
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*/
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private final Comparable<?> maxValue;
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// As this instance is immutable, these two values need only
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// be calculated once.
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private transient Integer myHashCode = null;
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private transient String myToString = null;
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/**
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* Constructs an {@code OpenMBeanAttributeInfoSupport} instance,
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* which describes the attribute of an open MBean with the
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* specified {@code name}, {@code openType} and {@code
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* description}, and the specified read/write access properties.
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*
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* @param name cannot be a null or empty string.
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*
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* @param description cannot be a null or empty string.
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*
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* @param openType cannot be null.
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*
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* @param isReadable {@code true} if the attribute has a getter
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* exposed for management.
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*
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* @param isWritable {@code true} if the attribute has a setter
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* exposed for management.
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*
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* @param isIs {@code true} if the attribute's getter is of the
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* form <tt>is<i>XXX</i></tt>.
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*
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* @throws IllegalArgumentException if {@code name} or {@code
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* description} are null or empty string, or {@code openType} is
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* null.
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*/
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public OpenMBeanAttributeInfoSupport(String name,
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String description,
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OpenType<?> openType,
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boolean isReadable,
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boolean isWritable,
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boolean isIs) {
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this(name, description, openType, isReadable, isWritable, isIs,
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(Descriptor) null);
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}
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/**
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* <p>Constructs an {@code OpenMBeanAttributeInfoSupport} instance,
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* which describes the attribute of an open MBean with the
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* specified {@code name}, {@code openType}, {@code
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* description}, read/write access properties, and {@code Descriptor}.</p>
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*
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* <p>The {@code descriptor} can contain entries that will define
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* the values returned by certain methods of this class, as
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* explained in the {@link <a href="package-summary.html#constraints">
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* package description</a>}.
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*
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* @param name cannot be a null or empty string.
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*
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* @param description cannot be a null or empty string.
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*
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* @param openType cannot be null.
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*
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* @param isReadable {@code true} if the attribute has a getter
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* exposed for management.
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*
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* @param isWritable {@code true} if the attribute has a setter
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* exposed for management.
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*
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* @param isIs {@code true} if the attribute's getter is of the
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* form <tt>is<i>XXX</i></tt>.
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*
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* @param descriptor The descriptor for the attribute. This may be null
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* which is equivalent to an empty descriptor.
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*
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* @throws IllegalArgumentException if {@code name} or {@code
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* description} are null or empty string, or {@code openType} is
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* null, or the descriptor entries are invalid as described in the
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* {@link <a href="package-summary.html#constraints">package
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* description</a>}.
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*
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* @since 1.6
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*/
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public OpenMBeanAttributeInfoSupport(String name,
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String description,
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OpenType<?> openType,
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boolean isReadable,
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boolean isWritable,
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boolean isIs,
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Descriptor descriptor) {
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// Construct parent's state
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//
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super(name,
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(openType==null) ? null : openType.getClassName(),
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description,
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isReadable,
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isWritable,
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isIs,
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ImmutableDescriptor.union(descriptor, (openType==null)?null:
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openType.getDescriptor()));
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// Initialize this instance's specific state
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//
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this.openType = openType;
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descriptor = getDescriptor(); // replace null by empty
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this.defaultValue = valueFrom(descriptor, "defaultValue", openType);
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this.legalValues = valuesFrom(descriptor, "legalValues", openType);
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this.minValue = comparableValueFrom(descriptor, "minValue", openType);
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this.maxValue = comparableValueFrom(descriptor, "maxValue", openType);
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try {
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check(this);
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} catch (OpenDataException e) {
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throw new IllegalArgumentException(e.getMessage(), e);
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}
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}
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/**
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* Constructs an {@code OpenMBeanAttributeInfoSupport} instance,
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* which describes the attribute of an open MBean with the
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* specified {@code name}, {@code openType}, {@code description}
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* and {@code defaultValue}, and the specified read/write access
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* properties.
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*
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* @param name cannot be a null or empty string.
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*
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* @param description cannot be a null or empty string.
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*
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* @param openType cannot be null.
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*
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* @param isReadable {@code true} if the attribute has a getter
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* exposed for management.
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*
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* @param isWritable {@code true} if the attribute has a setter
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* exposed for management.
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*
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* @param isIs {@code true} if the attribute's getter is of the
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* form <tt>is<i>XXX</i></tt>.
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*
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* @param defaultValue must be a valid value for the {@code
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* openType} specified for this attribute; default value not
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* supported for {@code ArrayType} and {@code TabularType}; can
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* be null, in which case it means that no default value is set.
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*
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* @param <T> allows the compiler to check that the {@code defaultValue},
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* if non-null, has the correct Java type for the given {@code openType}.
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*
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* @throws IllegalArgumentException if {@code name} or {@code
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* description} are null or empty string, or {@code openType} is
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* null.
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*
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* @throws OpenDataException if {@code defaultValue} is not a
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* valid value for the specified {@code openType}, or {@code
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* defaultValue} is non null and {@code openType} is an {@code
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* ArrayType} or a {@code TabularType}.
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*/
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public <T> OpenMBeanAttributeInfoSupport(String name,
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String description,
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OpenType<T> openType,
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boolean isReadable,
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boolean isWritable,
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boolean isIs,
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T defaultValue)
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throws OpenDataException {
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this(name, description, openType, isReadable, isWritable, isIs,
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defaultValue, (T[]) null);
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}
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/**
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* <p>Constructs an {@code OpenMBeanAttributeInfoSupport} instance,
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* which describes the attribute of an open MBean with the
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* specified {@code name}, {@code openType}, {@code description},
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* {@code defaultValue} and {@code legalValues}, and the specified
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* read/write access properties.</p>
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*
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* <p>The contents of {@code legalValues} are copied, so subsequent
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* modifications of the array referenced by {@code legalValues}
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* have no impact on this {@code OpenMBeanAttributeInfoSupport}
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* instance.</p>
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*
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* @param name cannot be a null or empty string.
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*
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* @param description cannot be a null or empty string.
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*
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* @param openType cannot be null.
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*
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* @param isReadable {@code true} if the attribute has a getter
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* exposed for management.
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*
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* @param isWritable {@code true} if the attribute has a setter
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* exposed for management.
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*
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* @param isIs {@code true} if the attribute's getter is of the
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* form <tt>is<i>XXX</i></tt>.
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*
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* @param defaultValue must be a valid value
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* for the {@code
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* openType} specified for this attribute; default value not
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* supported for {@code ArrayType} and {@code TabularType}; can
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* be null, in which case it means that no default value is set.
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*
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* @param legalValues each contained value must be valid for the
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* {@code openType} specified for this attribute; legal values
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* not supported for {@code ArrayType} and {@code TabularType};
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* can be null or empty.
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*
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* @param <T> allows the compiler to check that the {@code
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* defaultValue} and {@code legalValues}, if non-null, have the
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* correct Java type for the given {@code openType}.
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*
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* @throws IllegalArgumentException if {@code name} or {@code
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* description} are null or empty string, or {@code openType} is
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* null.
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*
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* @throws OpenDataException if {@code defaultValue} is not a
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* valid value for the specified {@code openType}, or one value in
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* {@code legalValues} is not valid for the specified {@code
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* openType}, or {@code defaultValue} is non null and {@code
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* openType} is an {@code ArrayType} or a {@code TabularType}, or
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* {@code legalValues} is non null and non empty and {@code
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* openType} is an {@code ArrayType} or a {@code TabularType}, or
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* {@code legalValues} is non null and non empty and {@code
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* defaultValue} is not contained in {@code legalValues}.
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*/
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public <T> OpenMBeanAttributeInfoSupport(String name,
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String description,
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OpenType<T> openType,
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boolean isReadable,
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boolean isWritable,
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boolean isIs,
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T defaultValue,
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T[] legalValues)
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throws OpenDataException {
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this(name, description, openType, isReadable, isWritable, isIs,
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defaultValue, legalValues, null, null);
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}
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/**
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* Constructs an {@code OpenMBeanAttributeInfoSupport} instance,
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* which describes the attribute of an open MBean, with the
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* specified {@code name}, {@code openType}, {@code description},
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* {@code defaultValue}, {@code minValue} and {@code maxValue}.
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*
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* It is possible to specify minimal and maximal values only for
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* an open type whose values are {@code Comparable}.
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*
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* @param name cannot be a null or empty string.
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*
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* @param description cannot be a null or empty string.
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*
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* @param openType cannot be null.
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*
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* @param isReadable {@code true} if the attribute has a getter
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* exposed for management.
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*
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* @param isWritable {@code true} if the attribute has a setter
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* exposed for management.
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*
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* @param isIs {@code true} if the attribute's getter is of the
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* form <tt>is<i>XXX</i></tt>.
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*
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* @param defaultValue must be a valid value for the {@code
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* openType} specified for this attribute; default value not
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* supported for {@code ArrayType} and {@code TabularType}; can be
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* null, in which case it means that no default value is set.
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*
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* @param minValue must be valid for the {@code openType}
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* specified for this attribute; can be null, in which case it
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* means that no minimal value is set.
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*
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* @param maxValue must be valid for the {@code openType}
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* specified for this attribute; can be null, in which case it
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* means that no maximal value is set.
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*
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* @param <T> allows the compiler to check that the {@code
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* defaultValue}, {@code minValue}, and {@code maxValue}, if
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* non-null, have the correct Java type for the given {@code
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* openType}.
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*
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* @throws IllegalArgumentException if {@code name} or {@code
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* description} are null or empty string, or {@code openType} is
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* null.
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*
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* @throws OpenDataException if {@code defaultValue}, {@code
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* minValue} or {@code maxValue} is not a valid value for the
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* specified {@code openType}, or {@code defaultValue} is non null
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* and {@code openType} is an {@code ArrayType} or a {@code
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* TabularType}, or both {@code minValue} and {@code maxValue} are
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* non-null and {@code minValue.compareTo(maxValue) > 0} is {@code
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* true}, or both {@code defaultValue} and {@code minValue} are
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* non-null and {@code minValue.compareTo(defaultValue) > 0} is
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* {@code true}, or both {@code defaultValue} and {@code maxValue}
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* are non-null and {@code defaultValue.compareTo(maxValue) > 0}
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* is {@code true}.
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*/
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382 |
public <T> OpenMBeanAttributeInfoSupport(String name,
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String description,
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OpenType<T> openType,
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385 |
boolean isReadable,
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386 |
boolean isWritable,
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387 |
boolean isIs,
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T defaultValue,
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389 |
Comparable<T> minValue,
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Comparable<T> maxValue)
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|
391 |
throws OpenDataException {
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this(name, description, openType, isReadable, isWritable, isIs,
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defaultValue, null, minValue, maxValue);
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394 |
}
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395 |
|
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396 |
private <T> OpenMBeanAttributeInfoSupport(String name,
|
|
397 |
String description,
|
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398 |
OpenType<T> openType,
|
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399 |
boolean isReadable,
|
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400 |
boolean isWritable,
|
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401 |
boolean isIs,
|
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402 |
T defaultValue,
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403 |
T[] legalValues,
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Comparable<T> minValue,
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405 |
Comparable<T> maxValue)
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406 |
throws OpenDataException {
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|
407 |
super(name,
|
|
408 |
(openType==null) ? null : openType.getClassName(),
|
|
409 |
description,
|
|
410 |
isReadable,
|
|
411 |
isWritable,
|
|
412 |
isIs,
|
|
413 |
makeDescriptor(openType,
|
|
414 |
defaultValue, legalValues, minValue, maxValue));
|
|
415 |
|
|
416 |
this.openType = openType;
|
|
417 |
|
|
418 |
Descriptor d = getDescriptor();
|
|
419 |
this.defaultValue = defaultValue;
|
|
420 |
this.minValue = minValue;
|
|
421 |
this.maxValue = maxValue;
|
|
422 |
// We already converted the array into an unmodifiable Set
|
|
423 |
// in the descriptor.
|
|
424 |
this.legalValues = (Set<?>) d.getFieldValue("legalValues");
|
|
425 |
|
|
426 |
check(this);
|
|
427 |
}
|
|
428 |
|
|
429 |
/**
|
|
430 |
* An object serialized in a version of the API before Descriptors were
|
|
431 |
* added to this class will have an empty or null Descriptor.
|
|
432 |
* For consistency with our
|
|
433 |
* behavior in this version, we must replace the object with one
|
|
434 |
* where the Descriptors reflect the same values of openType, defaultValue,
|
|
435 |
* etc.
|
|
436 |
**/
|
|
437 |
private Object readResolve() {
|
|
438 |
if (getDescriptor().getFieldNames().length == 0) {
|
|
439 |
OpenType<Object> xopenType = cast(openType);
|
|
440 |
Set<Object> xlegalValues = cast(legalValues);
|
|
441 |
Comparable<Object> xminValue = cast(minValue);
|
|
442 |
Comparable<Object> xmaxValue = cast(maxValue);
|
|
443 |
return new OpenMBeanAttributeInfoSupport(
|
|
444 |
name, description, openType,
|
|
445 |
isReadable(), isWritable(), isIs(),
|
|
446 |
makeDescriptor(xopenType, defaultValue, xlegalValues,
|
|
447 |
xminValue, xmaxValue));
|
|
448 |
} else
|
|
449 |
return this;
|
|
450 |
}
|
|
451 |
|
|
452 |
static void check(OpenMBeanParameterInfo info) throws OpenDataException {
|
1510
|
453 |
OpenType<?> openType = info.getOpenType();
|
2
|
454 |
if (openType == null)
|
|
455 |
throw new IllegalArgumentException("OpenType cannot be null");
|
|
456 |
|
|
457 |
if (info.getName() == null ||
|
|
458 |
info.getName().trim().equals(""))
|
|
459 |
throw new IllegalArgumentException("Name cannot be null or empty");
|
|
460 |
|
|
461 |
if (info.getDescription() == null ||
|
|
462 |
info.getDescription().trim().equals(""))
|
|
463 |
throw new IllegalArgumentException("Description cannot be null or empty");
|
|
464 |
|
|
465 |
// Check and initialize defaultValue
|
|
466 |
//
|
|
467 |
if (info.hasDefaultValue()) {
|
|
468 |
// Default value not supported for ArrayType and TabularType
|
|
469 |
// Cast to Object because "OpenType<T> instanceof" is illegal
|
|
470 |
if (openType.isArray() || (Object)openType instanceof TabularType) {
|
|
471 |
throw new OpenDataException("Default value not supported " +
|
|
472 |
"for ArrayType and TabularType");
|
|
473 |
}
|
|
474 |
// Check defaultValue's class
|
|
475 |
if (!openType.isValue(info.getDefaultValue())) {
|
|
476 |
final String msg =
|
|
477 |
"Argument defaultValue's class [\"" +
|
|
478 |
info.getDefaultValue().getClass().getName() +
|
|
479 |
"\"] does not match the one defined in openType[\"" +
|
|
480 |
openType.getClassName() +"\"]";
|
|
481 |
throw new OpenDataException(msg);
|
|
482 |
}
|
|
483 |
}
|
|
484 |
|
|
485 |
// Check that we don't have both legalValues and min or max
|
|
486 |
//
|
|
487 |
if (info.hasLegalValues() &&
|
|
488 |
(info.hasMinValue() || info.hasMaxValue())) {
|
|
489 |
throw new OpenDataException("cannot have both legalValue and " +
|
|
490 |
"minValue or maxValue");
|
|
491 |
}
|
|
492 |
|
|
493 |
// Check minValue and maxValue
|
|
494 |
if (info.hasMinValue() && !openType.isValue(info.getMinValue())) {
|
|
495 |
final String msg =
|
|
496 |
"Type of minValue [" + info.getMinValue().getClass().getName() +
|
|
497 |
"] does not match OpenType [" + openType.getClassName() + "]";
|
|
498 |
throw new OpenDataException(msg);
|
|
499 |
}
|
|
500 |
if (info.hasMaxValue() && !openType.isValue(info.getMaxValue())) {
|
|
501 |
final String msg =
|
|
502 |
"Type of maxValue [" + info.getMaxValue().getClass().getName() +
|
|
503 |
"] does not match OpenType [" + openType.getClassName() + "]";
|
|
504 |
throw new OpenDataException(msg);
|
|
505 |
}
|
|
506 |
|
|
507 |
// Check that defaultValue is a legal value
|
|
508 |
//
|
|
509 |
if (info.hasDefaultValue()) {
|
|
510 |
Object defaultValue = info.getDefaultValue();
|
|
511 |
if (info.hasLegalValues() &&
|
|
512 |
!info.getLegalValues().contains(defaultValue)) {
|
|
513 |
throw new OpenDataException("defaultValue is not contained " +
|
|
514 |
"in legalValues");
|
|
515 |
}
|
|
516 |
|
|
517 |
// Check that minValue <= defaultValue <= maxValue
|
|
518 |
//
|
|
519 |
if (info.hasMinValue()) {
|
|
520 |
if (compare(info.getMinValue(), defaultValue) > 0) {
|
|
521 |
throw new OpenDataException("minValue cannot be greater " +
|
|
522 |
"than defaultValue");
|
|
523 |
}
|
|
524 |
}
|
|
525 |
if (info.hasMaxValue()) {
|
|
526 |
if (compare(info.getMaxValue(), defaultValue) < 0) {
|
|
527 |
throw new OpenDataException("maxValue cannot be less " +
|
|
528 |
"than defaultValue");
|
|
529 |
}
|
|
530 |
}
|
|
531 |
}
|
|
532 |
|
|
533 |
// Check legalValues
|
|
534 |
//
|
|
535 |
if (info.hasLegalValues()) {
|
|
536 |
// legalValues not supported for TabularType and arrays
|
|
537 |
if ((Object)openType instanceof TabularType || openType.isArray()) {
|
|
538 |
throw new OpenDataException("Legal values not supported " +
|
|
539 |
"for TabularType and arrays");
|
|
540 |
}
|
|
541 |
// Check legalValues are valid with openType
|
|
542 |
for (Object v : info.getLegalValues()) {
|
|
543 |
if (!openType.isValue(v)) {
|
|
544 |
final String msg =
|
|
545 |
"Element of legalValues [" + v +
|
|
546 |
"] is not a valid value for the specified openType [" +
|
|
547 |
openType.toString() +"]";
|
|
548 |
throw new OpenDataException(msg);
|
|
549 |
}
|
|
550 |
}
|
|
551 |
}
|
|
552 |
|
|
553 |
|
|
554 |
// Check that, if both specified, minValue <= maxValue
|
|
555 |
//
|
|
556 |
if (info.hasMinValue() && info.hasMaxValue()) {
|
|
557 |
if (compare(info.getMinValue(), info.getMaxValue()) > 0) {
|
|
558 |
throw new OpenDataException("minValue cannot be greater " +
|
|
559 |
"than maxValue");
|
|
560 |
}
|
|
561 |
}
|
|
562 |
|
|
563 |
}
|
|
564 |
|
1510
|
565 |
@SuppressWarnings({"unchecked", "rawtypes"})
|
2
|
566 |
static int compare(Object x, Object y) {
|
|
567 |
return ((Comparable) x).compareTo(y);
|
|
568 |
}
|
|
569 |
|
|
570 |
static <T> Descriptor makeDescriptor(OpenType<T> openType,
|
|
571 |
T defaultValue,
|
|
572 |
T[] legalValues,
|
|
573 |
Comparable<T> minValue,
|
|
574 |
Comparable<T> maxValue) {
|
|
575 |
Map<String, Object> map = new HashMap<String, Object>();
|
|
576 |
if (defaultValue != null)
|
|
577 |
map.put("defaultValue", defaultValue);
|
|
578 |
if (legalValues != null) {
|
|
579 |
Set<T> set = new HashSet<T>();
|
|
580 |
for (T v : legalValues)
|
|
581 |
set.add(v);
|
|
582 |
set = Collections.unmodifiableSet(set);
|
|
583 |
map.put("legalValues", set);
|
|
584 |
}
|
|
585 |
if (minValue != null)
|
|
586 |
map.put("minValue", minValue);
|
|
587 |
if (maxValue != null)
|
|
588 |
map.put("maxValue", maxValue);
|
|
589 |
if (map.isEmpty()) {
|
|
590 |
return openType.getDescriptor();
|
|
591 |
} else {
|
|
592 |
map.put("openType", openType);
|
|
593 |
return new ImmutableDescriptor(map);
|
|
594 |
}
|
|
595 |
}
|
|
596 |
|
|
597 |
static <T> Descriptor makeDescriptor(OpenType<T> openType,
|
|
598 |
T defaultValue,
|
|
599 |
Set<T> legalValues,
|
|
600 |
Comparable<T> minValue,
|
|
601 |
Comparable<T> maxValue) {
|
|
602 |
T[] legals;
|
|
603 |
if (legalValues == null)
|
|
604 |
legals = null;
|
|
605 |
else {
|
|
606 |
legals = cast(new Object[legalValues.size()]);
|
|
607 |
legalValues.toArray(legals);
|
|
608 |
}
|
|
609 |
return makeDescriptor(openType, defaultValue, legals, minValue, maxValue);
|
|
610 |
}
|
|
611 |
|
|
612 |
|
|
613 |
static <T> T valueFrom(Descriptor d, String name, OpenType<T> openType) {
|
|
614 |
Object x = d.getFieldValue(name);
|
|
615 |
if (x == null)
|
|
616 |
return null;
|
|
617 |
try {
|
|
618 |
return convertFrom(x, openType);
|
|
619 |
} catch (Exception e) {
|
|
620 |
final String msg =
|
|
621 |
"Cannot convert descriptor field " + name + " to " +
|
|
622 |
openType.getTypeName();
|
|
623 |
throw EnvHelp.initCause(new IllegalArgumentException(msg), e);
|
|
624 |
}
|
|
625 |
}
|
|
626 |
|
|
627 |
static <T> Set<T> valuesFrom(Descriptor d, String name,
|
|
628 |
OpenType<T> openType) {
|
|
629 |
Object x = d.getFieldValue(name);
|
|
630 |
if (x == null)
|
|
631 |
return null;
|
|
632 |
Collection<?> coll;
|
|
633 |
if (x instanceof Set<?>) {
|
|
634 |
Set<?> set = (Set<?>) x;
|
|
635 |
boolean asis = true;
|
|
636 |
for (Object element : set) {
|
|
637 |
if (!openType.isValue(element)) {
|
|
638 |
asis = false;
|
|
639 |
break;
|
|
640 |
}
|
|
641 |
}
|
|
642 |
if (asis)
|
|
643 |
return cast(set);
|
|
644 |
coll = set;
|
|
645 |
} else if (x instanceof Object[]) {
|
|
646 |
coll = Arrays.asList((Object[]) x);
|
|
647 |
} else {
|
|
648 |
final String msg =
|
|
649 |
"Descriptor value for " + name + " must be a Set or " +
|
|
650 |
"an array: " + x.getClass().getName();
|
|
651 |
throw new IllegalArgumentException(msg);
|
|
652 |
}
|
|
653 |
|
|
654 |
Set<T> result = new HashSet<T>();
|
|
655 |
for (Object element : coll)
|
|
656 |
result.add(convertFrom(element, openType));
|
|
657 |
return result;
|
|
658 |
}
|
|
659 |
|
1510
|
660 |
static <T> Comparable<?> comparableValueFrom(Descriptor d, String name,
|
|
661 |
OpenType<T> openType) {
|
2
|
662 |
T t = valueFrom(d, name, openType);
|
|
663 |
if (t == null || t instanceof Comparable<?>)
|
1510
|
664 |
return (Comparable<?>) t;
|
2
|
665 |
final String msg =
|
|
666 |
"Descriptor field " + name + " with value " + t +
|
|
667 |
" is not Comparable";
|
|
668 |
throw new IllegalArgumentException(msg);
|
|
669 |
}
|
|
670 |
|
|
671 |
private static <T> T convertFrom(Object x, OpenType<T> openType) {
|
|
672 |
if (openType.isValue(x)) {
|
|
673 |
T t = OpenMBeanAttributeInfoSupport.<T>cast(x);
|
|
674 |
return t;
|
|
675 |
}
|
|
676 |
return convertFromStrings(x, openType);
|
|
677 |
}
|
|
678 |
|
|
679 |
private static <T> T convertFromStrings(Object x, OpenType<T> openType) {
|
|
680 |
if (openType instanceof ArrayType<?>)
|
|
681 |
return convertFromStringArray(x, openType);
|
|
682 |
else if (x instanceof String)
|
|
683 |
return convertFromString((String) x, openType);
|
|
684 |
final String msg =
|
|
685 |
"Cannot convert value " + x + " of type " +
|
|
686 |
x.getClass().getName() + " to type " + openType.getTypeName();
|
|
687 |
throw new IllegalArgumentException(msg);
|
|
688 |
}
|
|
689 |
|
|
690 |
private static <T> T convertFromString(String s, OpenType<T> openType) {
|
|
691 |
Class<T> c;
|
|
692 |
try {
|
|
693 |
c = cast(Class.forName(openType.getClassName()));
|
|
694 |
} catch (ClassNotFoundException e) {
|
|
695 |
throw new NoClassDefFoundError(e.toString()); // can't happen
|
|
696 |
}
|
|
697 |
|
|
698 |
// Look for: public static T valueOf(String)
|
|
699 |
Method valueOf;
|
|
700 |
try {
|
|
701 |
valueOf = c.getMethod("valueOf", String.class);
|
|
702 |
if (!Modifier.isStatic(valueOf.getModifiers()) ||
|
|
703 |
valueOf.getReturnType() != c)
|
|
704 |
valueOf = null;
|
|
705 |
} catch (NoSuchMethodException e) {
|
|
706 |
valueOf = null;
|
|
707 |
}
|
|
708 |
if (valueOf != null) {
|
|
709 |
try {
|
|
710 |
return c.cast(valueOf.invoke(null, s));
|
|
711 |
} catch (Exception e) {
|
|
712 |
final String msg =
|
|
713 |
"Could not convert \"" + s + "\" using method: " + valueOf;
|
|
714 |
throw new IllegalArgumentException(msg);
|
|
715 |
}
|
|
716 |
}
|
|
717 |
|
|
718 |
// Look for: public T(String)
|
|
719 |
Constructor<T> con;
|
|
720 |
try {
|
|
721 |
con = c.getConstructor(String.class);
|
|
722 |
} catch (NoSuchMethodException e) {
|
|
723 |
con = null;
|
|
724 |
}
|
|
725 |
if (con != null) {
|
|
726 |
try {
|
|
727 |
return con.newInstance(s);
|
|
728 |
} catch (Exception e) {
|
|
729 |
final String msg =
|
|
730 |
"Could not convert \"" + s + "\" using constructor: " + con;
|
|
731 |
throw new IllegalArgumentException(msg);
|
|
732 |
}
|
|
733 |
}
|
|
734 |
|
|
735 |
throw new IllegalArgumentException("Don't know how to convert " +
|
|
736 |
"string to " +
|
|
737 |
openType.getTypeName());
|
|
738 |
}
|
|
739 |
|
|
740 |
|
|
741 |
/* A Descriptor contained an array value encoded as Strings. The
|
|
742 |
Strings must be organized in an array corresponding to the desired
|
|
743 |
array. If the desired array has n dimensions, so must the String
|
|
744 |
array. We will convert element by element from String to desired
|
|
745 |
component type. */
|
|
746 |
private static <T> T convertFromStringArray(Object x,
|
|
747 |
OpenType<T> openType) {
|
|
748 |
ArrayType<?> arrayType = (ArrayType<?>) openType;
|
|
749 |
OpenType<?> baseType = arrayType.getElementOpenType();
|
|
750 |
int dim = arrayType.getDimension();
|
|
751 |
String squareBrackets = "[";
|
|
752 |
for (int i = 1; i < dim; i++)
|
|
753 |
squareBrackets += "[";
|
|
754 |
Class<?> stringArrayClass;
|
|
755 |
Class<?> targetArrayClass;
|
|
756 |
try {
|
|
757 |
stringArrayClass =
|
|
758 |
Class.forName(squareBrackets + "Ljava.lang.String;");
|
|
759 |
targetArrayClass =
|
|
760 |
Class.forName(squareBrackets + "L" + baseType.getClassName() +
|
|
761 |
";");
|
|
762 |
} catch (ClassNotFoundException e) {
|
|
763 |
throw new NoClassDefFoundError(e.toString()); // can't happen
|
|
764 |
}
|
|
765 |
if (!stringArrayClass.isInstance(x)) {
|
|
766 |
final String msg =
|
|
767 |
"Value for " + dim + "-dimensional array of " +
|
|
768 |
baseType.getTypeName() + " must be same type or a String " +
|
|
769 |
"array with same dimensions";
|
|
770 |
throw new IllegalArgumentException(msg);
|
|
771 |
}
|
|
772 |
OpenType<?> componentOpenType;
|
|
773 |
if (dim == 1)
|
|
774 |
componentOpenType = baseType;
|
|
775 |
else {
|
|
776 |
try {
|
|
777 |
componentOpenType = new ArrayType<T>(dim - 1, baseType);
|
|
778 |
} catch (OpenDataException e) {
|
|
779 |
throw new IllegalArgumentException(e.getMessage(), e);
|
|
780 |
// can't happen
|
|
781 |
}
|
|
782 |
}
|
|
783 |
int n = Array.getLength(x);
|
|
784 |
Object[] targetArray = (Object[])
|
|
785 |
Array.newInstance(targetArrayClass.getComponentType(), n);
|
|
786 |
for (int i = 0; i < n; i++) {
|
|
787 |
Object stringish = Array.get(x, i); // String or String[] etc
|
|
788 |
Object converted =
|
|
789 |
convertFromStrings(stringish, componentOpenType);
|
|
790 |
Array.set(targetArray, i, converted);
|
|
791 |
}
|
|
792 |
return OpenMBeanAttributeInfoSupport.<T>cast(targetArray);
|
|
793 |
}
|
|
794 |
|
|
795 |
@SuppressWarnings("unchecked")
|
|
796 |
static <T> T cast(Object x) {
|
|
797 |
return (T) x;
|
|
798 |
}
|
|
799 |
|
|
800 |
/**
|
|
801 |
* Returns the open type for the values of the attribute described
|
|
802 |
* by this {@code OpenMBeanAttributeInfoSupport} instance.
|
|
803 |
*/
|
|
804 |
public OpenType<?> getOpenType() {
|
|
805 |
return openType;
|
|
806 |
}
|
|
807 |
|
|
808 |
/**
|
|
809 |
* Returns the default value for the attribute described by this
|
|
810 |
* {@code OpenMBeanAttributeInfoSupport} instance, if specified,
|
|
811 |
* or {@code null} otherwise.
|
|
812 |
*/
|
|
813 |
public Object getDefaultValue() {
|
|
814 |
|
|
815 |
// Special case for ArrayType and TabularType
|
|
816 |
// [JF] TODO: clone it so that it cannot be altered,
|
|
817 |
// [JF] TODO: if we decide to support defaultValue as an array itself.
|
|
818 |
// [JF] As of today (oct 2000) it is not supported so
|
|
819 |
// defaultValue is null for arrays. Nothing to do.
|
|
820 |
|
|
821 |
return defaultValue;
|
|
822 |
}
|
|
823 |
|
|
824 |
/**
|
|
825 |
* Returns an unmodifiable Set of legal values for the attribute
|
|
826 |
* described by this {@code OpenMBeanAttributeInfoSupport}
|
|
827 |
* instance, if specified, or {@code null} otherwise.
|
|
828 |
*/
|
|
829 |
public Set<?> getLegalValues() {
|
|
830 |
|
|
831 |
// Special case for ArrayType and TabularType
|
|
832 |
// [JF] TODO: clone values so that they cannot be altered,
|
|
833 |
// [JF] TODO: if we decide to support LegalValues as an array itself.
|
|
834 |
// [JF] As of today (oct 2000) it is not supported so
|
|
835 |
// legalValues is null for arrays. Nothing to do.
|
|
836 |
|
|
837 |
// Returns our legalValues Set (set was constructed unmodifiable)
|
|
838 |
return (legalValues);
|
|
839 |
}
|
|
840 |
|
|
841 |
/**
|
|
842 |
* Returns the minimal value for the attribute described by this
|
|
843 |
* {@code OpenMBeanAttributeInfoSupport} instance, if specified,
|
|
844 |
* or {@code null} otherwise.
|
|
845 |
*/
|
|
846 |
public Comparable<?> getMinValue() {
|
|
847 |
|
|
848 |
// Note: only comparable values have a minValue,
|
|
849 |
// so that's not the case of arrays and tabulars (always null).
|
|
850 |
|
|
851 |
return minValue;
|
|
852 |
}
|
|
853 |
|
|
854 |
/**
|
|
855 |
* Returns the maximal value for the attribute described by this
|
|
856 |
* {@code OpenMBeanAttributeInfoSupport} instance, if specified,
|
|
857 |
* or {@code null} otherwise.
|
|
858 |
*/
|
|
859 |
public Comparable<?> getMaxValue() {
|
|
860 |
|
|
861 |
// Note: only comparable values have a maxValue,
|
|
862 |
// so that's not the case of arrays and tabulars (always null).
|
|
863 |
|
|
864 |
return maxValue;
|
|
865 |
}
|
|
866 |
|
|
867 |
/**
|
|
868 |
* Returns {@code true} if this {@code
|
|
869 |
* OpenMBeanAttributeInfoSupport} instance specifies a non-null
|
|
870 |
* default value for the described attribute, {@code false}
|
|
871 |
* otherwise.
|
|
872 |
*/
|
|
873 |
public boolean hasDefaultValue() {
|
|
874 |
|
|
875 |
return (defaultValue != null);
|
|
876 |
}
|
|
877 |
|
|
878 |
/**
|
|
879 |
* Returns {@code true} if this {@code
|
|
880 |
* OpenMBeanAttributeInfoSupport} instance specifies a non-null
|
|
881 |
* set of legal values for the described attribute, {@code false}
|
|
882 |
* otherwise.
|
|
883 |
*/
|
|
884 |
public boolean hasLegalValues() {
|
|
885 |
|
|
886 |
return (legalValues != null);
|
|
887 |
}
|
|
888 |
|
|
889 |
/**
|
|
890 |
* Returns {@code true} if this {@code
|
|
891 |
* OpenMBeanAttributeInfoSupport} instance specifies a non-null
|
|
892 |
* minimal value for the described attribute, {@code false}
|
|
893 |
* otherwise.
|
|
894 |
*/
|
|
895 |
public boolean hasMinValue() {
|
|
896 |
|
|
897 |
return (minValue != null);
|
|
898 |
}
|
|
899 |
|
|
900 |
/**
|
|
901 |
* Returns {@code true} if this {@code
|
|
902 |
* OpenMBeanAttributeInfoSupport} instance specifies a non-null
|
|
903 |
* maximal value for the described attribute, {@code false}
|
|
904 |
* otherwise.
|
|
905 |
*/
|
|
906 |
public boolean hasMaxValue() {
|
|
907 |
|
|
908 |
return (maxValue != null);
|
|
909 |
}
|
|
910 |
|
|
911 |
|
|
912 |
/**
|
|
913 |
* Tests whether {@code obj} is a valid value for the attribute
|
|
914 |
* described by this {@code OpenMBeanAttributeInfoSupport}
|
|
915 |
* instance.
|
|
916 |
*
|
|
917 |
* @param obj the object to be tested.
|
|
918 |
*
|
|
919 |
* @return {@code true} if {@code obj} is a valid value for
|
|
920 |
* the parameter described by this {@code
|
|
921 |
* OpenMBeanAttributeInfoSupport} instance, {@code false}
|
|
922 |
* otherwise.
|
|
923 |
*/
|
|
924 |
public boolean isValue(Object obj) {
|
|
925 |
return isValue(this, obj);
|
|
926 |
}
|
|
927 |
|
1510
|
928 |
@SuppressWarnings({"unchecked", "rawtypes"}) // cast to Comparable
|
2
|
929 |
static boolean isValue(OpenMBeanParameterInfo info, Object obj) {
|
|
930 |
if (info.hasDefaultValue() && obj == null)
|
|
931 |
return true;
|
|
932 |
return
|
|
933 |
info.getOpenType().isValue(obj) &&
|
|
934 |
(!info.hasLegalValues() || info.getLegalValues().contains(obj)) &&
|
|
935 |
(!info.hasMinValue() ||
|
|
936 |
((Comparable) info.getMinValue()).compareTo(obj) <= 0) &&
|
|
937 |
(!info.hasMaxValue() ||
|
|
938 |
((Comparable) info.getMaxValue()).compareTo(obj) >= 0);
|
|
939 |
}
|
|
940 |
|
|
941 |
/* *** Commodity methods from java.lang.Object *** */
|
|
942 |
|
|
943 |
|
|
944 |
/**
|
|
945 |
* Compares the specified {@code obj} parameter with this {@code
|
|
946 |
* OpenMBeanAttributeInfoSupport} instance for equality.
|
|
947 |
* <p>
|
|
948 |
* Returns {@code true} if and only if all of the following statements are true:
|
|
949 |
* <ul>
|
|
950 |
* <li>{@code obj} is non null,</li>
|
|
951 |
* <li>{@code obj} also implements the {@code OpenMBeanAttributeInfo} interface,</li>
|
|
952 |
* <li>their names are equal</li>
|
|
953 |
* <li>their open types are equal</li>
|
|
954 |
* <li>their access properties (isReadable, isWritable and isIs) are equal</li>
|
|
955 |
* <li>their default, min, max and legal values are equal.</li>
|
|
956 |
* </ul>
|
|
957 |
* This ensures that this {@code equals} method works properly for
|
|
958 |
* {@code obj} parameters which are different implementations of
|
|
959 |
* the {@code OpenMBeanAttributeInfo} interface.
|
|
960 |
*
|
|
961 |
* <p>If {@code obj} also implements {@link DescriptorRead}, then its
|
|
962 |
* {@link DescriptorRead#getDescriptor() getDescriptor()} method must
|
|
963 |
* also return the same value as for this object.</p>
|
|
964 |
*
|
|
965 |
* @param obj the object to be compared for equality with this
|
|
966 |
* {@code OpenMBeanAttributeInfoSupport} instance.
|
|
967 |
*
|
|
968 |
* @return {@code true} if the specified object is equal to this
|
|
969 |
* {@code OpenMBeanAttributeInfoSupport} instance.
|
|
970 |
*/
|
|
971 |
public boolean equals(Object obj) {
|
|
972 |
if (!(obj instanceof OpenMBeanAttributeInfo))
|
|
973 |
return false;
|
|
974 |
|
|
975 |
OpenMBeanAttributeInfo other = (OpenMBeanAttributeInfo) obj;
|
|
976 |
|
|
977 |
return
|
|
978 |
this.isReadable() == other.isReadable() &&
|
|
979 |
this.isWritable() == other.isWritable() &&
|
|
980 |
this.isIs() == other.isIs() &&
|
|
981 |
equal(this, other);
|
|
982 |
}
|
|
983 |
|
|
984 |
static boolean equal(OpenMBeanParameterInfo x1, OpenMBeanParameterInfo x2) {
|
|
985 |
if (x1 instanceof DescriptorRead) {
|
|
986 |
if (!(x2 instanceof DescriptorRead))
|
|
987 |
return false;
|
|
988 |
Descriptor d1 = ((DescriptorRead) x1).getDescriptor();
|
|
989 |
Descriptor d2 = ((DescriptorRead) x2).getDescriptor();
|
|
990 |
if (!d1.equals(d2))
|
|
991 |
return false;
|
|
992 |
} else if (x2 instanceof DescriptorRead)
|
|
993 |
return false;
|
|
994 |
|
|
995 |
return
|
|
996 |
x1.getName().equals(x2.getName()) &&
|
|
997 |
x1.getOpenType().equals(x2.getOpenType()) &&
|
|
998 |
(x1.hasDefaultValue() ?
|
|
999 |
x1.getDefaultValue().equals(x2.getDefaultValue()) :
|
|
1000 |
!x2.hasDefaultValue()) &&
|
|
1001 |
(x1.hasMinValue() ?
|
|
1002 |
x1.getMinValue().equals(x2.getMinValue()) :
|
|
1003 |
!x2.hasMinValue()) &&
|
|
1004 |
(x1.hasMaxValue() ?
|
|
1005 |
x1.getMaxValue().equals(x2.getMaxValue()) :
|
|
1006 |
!x2.hasMaxValue()) &&
|
|
1007 |
(x1.hasLegalValues() ?
|
|
1008 |
x1.getLegalValues().equals(x2.getLegalValues()) :
|
|
1009 |
!x2.hasLegalValues());
|
|
1010 |
}
|
|
1011 |
|
|
1012 |
/**
|
|
1013 |
* <p>Returns the hash code value for this {@code
|
|
1014 |
* OpenMBeanAttributeInfoSupport} instance.</p>
|
|
1015 |
*
|
|
1016 |
* <p>The hash code of an {@code OpenMBeanAttributeInfoSupport}
|
|
1017 |
* instance is the sum of the hash codes of all elements of
|
|
1018 |
* information used in {@code equals} comparisons (ie: its name,
|
|
1019 |
* its <i>open type</i>, its default, min, max and legal
|
|
1020 |
* values, and its Descriptor).
|
|
1021 |
*
|
|
1022 |
* <p>This ensures that {@code t1.equals(t2)} implies that {@code
|
|
1023 |
* t1.hashCode()==t2.hashCode()} for any two {@code
|
|
1024 |
* OpenMBeanAttributeInfoSupport} instances {@code t1} and {@code
|
|
1025 |
* t2}, as required by the general contract of the method {@link
|
|
1026 |
* Object#hashCode() Object.hashCode()}.
|
|
1027 |
*
|
|
1028 |
* <p>However, note that another instance of a class implementing
|
|
1029 |
* the {@code OpenMBeanAttributeInfo} interface may be equal to
|
|
1030 |
* this {@code OpenMBeanAttributeInfoSupport} instance as defined
|
|
1031 |
* by {@link #equals(java.lang.Object)}, but may have a different
|
|
1032 |
* hash code if it is calculated differently.
|
|
1033 |
*
|
|
1034 |
* <p>As {@code OpenMBeanAttributeInfoSupport} instances are
|
|
1035 |
* immutable, the hash code for this instance is calculated once,
|
|
1036 |
* on the first call to {@code hashCode}, and then the same value
|
|
1037 |
* is returned for subsequent calls.
|
|
1038 |
*
|
|
1039 |
* @return the hash code value for this {@code
|
|
1040 |
* OpenMBeanAttributeInfoSupport} instance
|
|
1041 |
*/
|
|
1042 |
public int hashCode() {
|
|
1043 |
|
|
1044 |
// Calculate the hash code value if it has not yet been done
|
|
1045 |
// (ie 1st call to hashCode())
|
|
1046 |
//
|
|
1047 |
if (myHashCode == null)
|
|
1048 |
myHashCode = hashCode(this);
|
|
1049 |
|
|
1050 |
// return always the same hash code for this instance (immutable)
|
|
1051 |
//
|
|
1052 |
return myHashCode.intValue();
|
|
1053 |
}
|
|
1054 |
|
|
1055 |
static int hashCode(OpenMBeanParameterInfo info) {
|
|
1056 |
int value = 0;
|
|
1057 |
value += info.getName().hashCode();
|
|
1058 |
value += info.getOpenType().hashCode();
|
|
1059 |
if (info.hasDefaultValue())
|
|
1060 |
value += info.getDefaultValue().hashCode();
|
|
1061 |
if (info.hasMinValue())
|
|
1062 |
value += info.getMinValue().hashCode();
|
|
1063 |
if (info.hasMaxValue())
|
|
1064 |
value += info.getMaxValue().hashCode();
|
|
1065 |
if (info.hasLegalValues())
|
|
1066 |
value += info.getLegalValues().hashCode();
|
|
1067 |
if (info instanceof DescriptorRead)
|
|
1068 |
value += ((DescriptorRead) info).getDescriptor().hashCode();
|
|
1069 |
return value;
|
|
1070 |
}
|
|
1071 |
|
|
1072 |
/**
|
|
1073 |
* Returns a string representation of this
|
|
1074 |
* {@code OpenMBeanAttributeInfoSupport} instance.
|
|
1075 |
* <p>
|
|
1076 |
* The string representation consists of the name of this class (i.e.
|
|
1077 |
* {@code javax.management.openmbean.OpenMBeanAttributeInfoSupport}),
|
|
1078 |
* the string representation of the name and open type of the
|
|
1079 |
* described parameter, the string representation of its
|
|
1080 |
* default, min, max and legal values and the string
|
|
1081 |
* representation of its descriptor.
|
|
1082 |
*
|
|
1083 |
* <p>As {@code OpenMBeanAttributeInfoSupport} instances are
|
|
1084 |
* immutable, the string representation for this instance is
|
|
1085 |
* calculated once, on the first call to {@code toString}, and
|
|
1086 |
* then the same value is returned for subsequent calls.
|
|
1087 |
*
|
|
1088 |
* @return a string representation of this
|
|
1089 |
* {@code OpenMBeanAttributeInfoSupport} instance.
|
|
1090 |
*/
|
|
1091 |
public String toString() {
|
|
1092 |
|
|
1093 |
// Calculate the string value if it has not yet been done
|
|
1094 |
// (ie 1st call to toString())
|
|
1095 |
//
|
|
1096 |
if (myToString == null)
|
|
1097 |
myToString = toString(this);
|
|
1098 |
|
|
1099 |
// return always the same string representation for this
|
|
1100 |
// instance (immutable)
|
|
1101 |
//
|
|
1102 |
return myToString;
|
|
1103 |
}
|
|
1104 |
|
|
1105 |
static String toString(OpenMBeanParameterInfo info) {
|
|
1106 |
Descriptor d = (info instanceof DescriptorRead) ?
|
|
1107 |
((DescriptorRead) info).getDescriptor() : null;
|
|
1108 |
return
|
|
1109 |
info.getClass().getName() +
|
|
1110 |
"(name=" + info.getName() +
|
|
1111 |
",openType=" + info.getOpenType() +
|
|
1112 |
",default=" + info.getDefaultValue() +
|
|
1113 |
",minValue=" + info.getMinValue() +
|
|
1114 |
",maxValue=" + info.getMaxValue() +
|
|
1115 |
",legalValues=" + info.getLegalValues() +
|
|
1116 |
((d == null) ? "" : ",descriptor=" + d) +
|
|
1117 |
")";
|
|
1118 |
}
|
|
1119 |
}
|