0N/A/*
2362N/A * Copyright (c) 2000, 2008, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/A
0N/A
0N/Apackage javax.management.openmbean;
0N/A
0N/A
0N/A// java import
0N/A//
0N/Aimport java.util.Set;
0N/Aimport javax.management.Descriptor;
0N/Aimport javax.management.DescriptorRead; // for Javadoc
0N/Aimport javax.management.ImmutableDescriptor;
0N/Aimport javax.management.MBeanParameterInfo;
0N/A
0N/A// OpenMBeanAttributeInfoSupport and this class are very similar
0N/A// but can't easily be refactored because there's no multiple inheritance.
0N/A// The best we can do for refactoring is to put a bunch of static methods
0N/A// in OpenMBeanAttributeInfoSupport and import them here.
0N/Aimport static javax.management.openmbean.OpenMBeanAttributeInfoSupport.*;
0N/A
0N/A/**
0N/A * Describes a parameter used in one or more operations or
0N/A * constructors of an open MBean.
0N/A *
0N/A *
0N/A * @since 1.5
0N/A */
0N/Apublic class OpenMBeanParameterInfoSupport
0N/A extends MBeanParameterInfo
0N/A implements OpenMBeanParameterInfo {
0N/A
0N/A /* Serial version */
0N/A static final long serialVersionUID = -7235016873758443122L;
0N/A
0N/A /**
0N/A * @serial The open mbean parameter's <i>open type</i>
0N/A */
0N/A private OpenType<?> openType;
0N/A
0N/A /**
0N/A * @serial The open mbean parameter's default value
0N/A */
0N/A private Object defaultValue = null;
0N/A
0N/A /**
0N/A * @serial The open mbean parameter's legal values. This {@link
0N/A * Set} is unmodifiable
0N/A */
0N/A private Set<?> legalValues = null; // to be constructed unmodifiable
0N/A
0N/A /**
0N/A * @serial The open mbean parameter's min value
0N/A */
686N/A private Comparable<?> minValue = null;
0N/A
0N/A /**
0N/A * @serial The open mbean parameter's max value
0N/A */
686N/A private Comparable<?> maxValue = null;
0N/A
0N/A
0N/A // As this instance is immutable, these two values need only
0N/A // be calculated once.
0N/A private transient Integer myHashCode = null; // As this instance is immutable, these two values
0N/A private transient String myToString = null; // need only be calculated once.
0N/A
0N/A
0N/A /**
0N/A * Constructs an {@code OpenMBeanParameterInfoSupport} instance,
0N/A * which describes the parameter used in one or more operations or
0N/A * constructors of a class of open MBeans, with the specified
0N/A * {@code name}, {@code openType} and {@code description}.
0N/A *
0N/A * @param name cannot be a null or empty string.
0N/A *
0N/A * @param description cannot be a null or empty string.
0N/A *
0N/A * @param openType cannot be null.
0N/A *
0N/A * @throws IllegalArgumentException if {@code name} or {@code
0N/A * description} are null or empty string, or {@code openType} is
0N/A * null.
0N/A */
0N/A public OpenMBeanParameterInfoSupport(String name,
0N/A String description,
0N/A OpenType<?> openType) {
0N/A this(name, description, openType, (Descriptor) null);
0N/A }
0N/A
0N/A /**
0N/A * <p>Constructs an {@code OpenMBeanParameterInfoSupport} instance,
0N/A * which describes the parameter used in one or more operations or
0N/A * constructors of a class of open MBeans, with the specified
0N/A * {@code name}, {@code openType}, {@code description},
0N/A * and {@code descriptor}.</p>
0N/A *
0N/A * <p>The {@code descriptor} can contain entries that will define
0N/A * the values returned by certain methods of this class, as
0N/A * explained in the {@link <a href="package-summary.html#constraints">
0N/A * package description</a>}.
0N/A *
0N/A * @param name cannot be a null or empty string.
0N/A *
0N/A * @param description cannot be a null or empty string.
0N/A *
0N/A * @param openType cannot be null.
0N/A *
0N/A * @param descriptor The descriptor for the parameter. This may be null
0N/A * which is equivalent to an empty descriptor.
0N/A *
0N/A * @throws IllegalArgumentException if {@code name} or {@code
0N/A * description} are null or empty string, or {@code openType} is
0N/A * null, or the descriptor entries are invalid as described in the
0N/A * {@link <a href="package-summary.html#constraints">package
0N/A * description</a>}.
0N/A *
0N/A * @since 1.6
0N/A */
0N/A public OpenMBeanParameterInfoSupport(String name,
0N/A String description,
0N/A OpenType<?> openType,
0N/A Descriptor descriptor) {
0N/A
0N/A
0N/A // Construct parent's state
0N/A //
0N/A super(name,
0N/A (openType==null) ? null : openType.getClassName(),
0N/A description,
0N/A ImmutableDescriptor.union(descriptor,(openType==null)?null:
0N/A openType.getDescriptor()));
0N/A
0N/A // Initialize this instance's specific state
0N/A //
0N/A this.openType = openType;
0N/A
0N/A descriptor = getDescriptor(); // replace null by empty
0N/A this.defaultValue = valueFrom(descriptor, "defaultValue", openType);
0N/A this.legalValues = valuesFrom(descriptor, "legalValues", openType);
0N/A this.minValue = comparableValueFrom(descriptor, "minValue", openType);
0N/A this.maxValue = comparableValueFrom(descriptor, "maxValue", openType);
0N/A
0N/A try {
0N/A check(this);
0N/A } catch (OpenDataException e) {
0N/A throw new IllegalArgumentException(e.getMessage(), e);
0N/A }
0N/A }
0N/A
0N/A
0N/A /**
0N/A * Constructs an {@code OpenMBeanParameterInfoSupport} instance,
0N/A * which describes the parameter used in one or more operations or
0N/A * constructors of a class of open MBeans, with the specified
0N/A * {@code name}, {@code openType}, {@code description} and {@code
0N/A * defaultValue}.
0N/A *
0N/A * @param name cannot be a null or empty string.
0N/A *
0N/A * @param description cannot be a null or empty string.
0N/A *
0N/A * @param openType cannot be null.
0N/A *
0N/A * @param defaultValue must be a valid value for the {@code
0N/A * openType} specified for this parameter; default value not
0N/A * supported for {@code ArrayType} and {@code TabularType}; can be
0N/A * null, in which case it means that no default value is set.
0N/A *
0N/A * @param <T> allows the compiler to check that the {@code defaultValue},
0N/A * if non-null, has the correct Java type for the given {@code openType}.
0N/A *
0N/A * @throws IllegalArgumentException if {@code name} or {@code
0N/A * description} are null or empty string, or {@code openType} is
0N/A * null.
0N/A *
0N/A * @throws OpenDataException if {@code defaultValue} is not a
0N/A * valid value for the specified {@code openType}, or {@code
0N/A * defaultValue} is non null and {@code openType} is an {@code
0N/A * ArrayType} or a {@code TabularType}.
0N/A */
0N/A public <T> OpenMBeanParameterInfoSupport(String name,
0N/A String description,
0N/A OpenType<T> openType,
0N/A T defaultValue)
0N/A throws OpenDataException {
0N/A this(name, description, openType, defaultValue, (T[]) null);
0N/A }
0N/A
0N/A /**
0N/A * <p>Constructs an {@code OpenMBeanParameterInfoSupport} instance,
0N/A * which describes the parameter used in one or more operations or
0N/A * constructors of a class of open MBeans, with the specified
0N/A * {@code name}, {@code openType}, {@code description}, {@code
0N/A * defaultValue} and {@code legalValues}.</p>
0N/A *
0N/A * <p>The contents of {@code legalValues} are copied, so subsequent
0N/A * modifications of the array referenced by {@code legalValues}
0N/A * have no impact on this {@code OpenMBeanParameterInfoSupport}
0N/A * instance.</p>
0N/A *
0N/A * @param name cannot be a null or empty string.
0N/A *
0N/A * @param description cannot be a null or empty string.
0N/A *
0N/A * @param openType cannot be null.
0N/A *
0N/A * @param defaultValue must be a valid value for the {@code
0N/A * openType} specified for this parameter; default value not
0N/A * supported for {@code ArrayType} and {@code TabularType}; can be
0N/A * null, in which case it means that no default value is set.
0N/A *
0N/A * @param legalValues each contained value must be valid for the
0N/A * {@code openType} specified for this parameter; legal values not
0N/A * supported for {@code ArrayType} and {@code TabularType}; can be
0N/A * null or empty.
0N/A *
0N/A * @param <T> allows the compiler to check that the {@code
0N/A * defaultValue} and {@code legalValues}, if non-null, have the
0N/A * correct Java type for the given {@code openType}.
0N/A *
0N/A * @throws IllegalArgumentException if {@code name} or {@code
0N/A * description} are null or empty string, or {@code openType} is
0N/A * null.
0N/A *
0N/A * @throws OpenDataException if {@code defaultValue} is not a
0N/A * valid value for the specified {@code openType}, or one value in
0N/A * {@code legalValues} is not valid for the specified {@code
0N/A * openType}, or {@code defaultValue} is non null and {@code
0N/A * openType} is an {@code ArrayType} or a {@code TabularType}, or
0N/A * {@code legalValues} is non null and non empty and {@code
0N/A * openType} is an {@code ArrayType} or a {@code TabularType}, or
0N/A * {@code legalValues} is non null and non empty and {@code
0N/A * defaultValue} is not contained in {@code legalValues}.
0N/A */
0N/A public <T> OpenMBeanParameterInfoSupport(String name,
0N/A String description,
0N/A OpenType<T> openType,
0N/A T defaultValue,
0N/A T[] legalValues)
0N/A throws OpenDataException {
0N/A this(name, description, openType,
0N/A defaultValue, legalValues, null, null);
0N/A }
0N/A
0N/A
0N/A /**
0N/A * Constructs an {@code OpenMBeanParameterInfoSupport} instance,
0N/A * which describes the parameter used in one or more operations or
0N/A * constructors of a class of open MBeans, with the specified
0N/A * {@code name}, {@code openType}, {@code description}, {@code
0N/A * defaultValue}, {@code minValue} and {@code maxValue}.
0N/A *
0N/A * It is possible to specify minimal and maximal values only for
0N/A * an open type whose values are {@code Comparable}.
0N/A *
0N/A * @param name cannot be a null or empty string.
0N/A *
0N/A * @param description cannot be a null or empty string.
0N/A *
0N/A * @param openType cannot be null.
0N/A *
0N/A * @param defaultValue must be a valid value for the {@code
0N/A * openType} specified for this parameter; default value not
0N/A * supported for {@code ArrayType} and {@code TabularType}; can be
0N/A * null, in which case it means that no default value is set.
0N/A *
0N/A * @param minValue must be valid for the {@code openType}
0N/A * specified for this parameter; can be null, in which case it
0N/A * means that no minimal value is set.
0N/A *
0N/A * @param maxValue must be valid for the {@code openType}
0N/A * specified for this parameter; can be null, in which case it
0N/A * means that no maximal value is set.
0N/A *
0N/A * @param <T> allows the compiler to check that the {@code
0N/A * defaultValue}, {@code minValue}, and {@code maxValue}, if
0N/A * non-null, have the correct Java type for the given {@code
0N/A * openType}.
0N/A *
0N/A * @throws IllegalArgumentException if {@code name} or {@code
0N/A * description} are null or empty string, or {@code openType} is
0N/A * null.
0N/A *
0N/A * @throws OpenDataException if {@code defaultValue}, {@code
0N/A * minValue} or {@code maxValue} is not a valid value for the
0N/A * specified {@code openType}, or {@code defaultValue} is non null
0N/A * and {@code openType} is an {@code ArrayType} or a {@code
0N/A * TabularType}, or both {@code minValue} and {@code maxValue} are
0N/A * non-null and {@code minValue.compareTo(maxValue) > 0} is {@code
0N/A * true}, or both {@code defaultValue} and {@code minValue} are
0N/A * non-null and {@code minValue.compareTo(defaultValue) > 0} is
0N/A * {@code true}, or both {@code defaultValue} and {@code maxValue}
0N/A * are non-null and {@code defaultValue.compareTo(maxValue) > 0}
0N/A * is {@code true}.
0N/A */
0N/A public <T> OpenMBeanParameterInfoSupport(String name,
0N/A String description,
0N/A OpenType<T> openType,
0N/A T defaultValue,
0N/A Comparable<T> minValue,
0N/A Comparable<T> maxValue)
0N/A throws OpenDataException {
0N/A this(name, description, openType,
0N/A defaultValue, null, minValue, maxValue);
0N/A }
0N/A
0N/A private <T> OpenMBeanParameterInfoSupport(String name,
0N/A String description,
0N/A OpenType<T> openType,
0N/A T defaultValue,
0N/A T[] legalValues,
0N/A Comparable<T> minValue,
0N/A Comparable<T> maxValue)
0N/A throws OpenDataException {
0N/A super(name,
0N/A (openType == null) ? null : openType.getClassName(),
0N/A description,
0N/A makeDescriptor(openType,
0N/A defaultValue, legalValues, minValue, maxValue));
0N/A
0N/A this.openType = openType;
0N/A
0N/A Descriptor d = getDescriptor();
0N/A this.defaultValue = defaultValue;
0N/A this.minValue = minValue;
0N/A this.maxValue = maxValue;
0N/A // We already converted the array into an unmodifiable Set
0N/A // in the descriptor.
0N/A this.legalValues = (Set<?>) d.getFieldValue("legalValues");
0N/A
0N/A check(this);
0N/A }
0N/A
0N/A /**
0N/A * An object serialized in a version of the API before Descriptors were
0N/A * added to this class will have an empty or null Descriptor.
0N/A * For consistency with our
0N/A * behavior in this version, we must replace the object with one
0N/A * where the Descriptors reflect the same values of openType, defaultValue,
0N/A * etc.
0N/A **/
0N/A private Object readResolve() {
0N/A if (getDescriptor().getFieldNames().length == 0) {
0N/A // This noise allows us to avoid "unchecked" warnings without
0N/A // having to suppress them explicitly.
0N/A OpenType<Object> xopenType = cast(openType);
0N/A Set<Object> xlegalValues = cast(legalValues);
0N/A Comparable<Object> xminValue = cast(minValue);
0N/A Comparable<Object> xmaxValue = cast(maxValue);
0N/A return new OpenMBeanParameterInfoSupport(
0N/A name, description, openType,
0N/A makeDescriptor(xopenType, defaultValue, xlegalValues,
0N/A xminValue, xmaxValue));
0N/A } else
0N/A return this;
0N/A }
0N/A
0N/A /**
0N/A * Returns the open type for the values of the parameter described
0N/A * by this {@code OpenMBeanParameterInfoSupport} instance.
0N/A */
0N/A public OpenType<?> getOpenType() {
0N/A return openType;
0N/A }
0N/A
0N/A /**
0N/A * Returns the default value for the parameter described by this
0N/A * {@code OpenMBeanParameterInfoSupport} instance, if specified,
0N/A * or {@code null} otherwise.
0N/A */
0N/A public Object getDefaultValue() {
0N/A
0N/A // Special case for ArrayType and TabularType
0N/A // [JF] TODO: clone it so that it cannot be altered,
0N/A // [JF] TODO: if we decide to support defaultValue as an array itself.
0N/A // [JF] As of today (oct 2000) it is not supported so
0N/A // defaultValue is null for arrays. Nothing to do.
0N/A
0N/A return defaultValue;
0N/A }
0N/A
0N/A /**
0N/A * Returns an unmodifiable Set of legal values for the parameter
0N/A * described by this {@code OpenMBeanParameterInfoSupport}
0N/A * instance, if specified, or {@code null} otherwise.
0N/A */
0N/A public Set<?> getLegalValues() {
0N/A
0N/A // Special case for ArrayType and TabularType
0N/A // [JF] TODO: clone values so that they cannot be altered,
0N/A // [JF] TODO: if we decide to support LegalValues as an array itself.
0N/A // [JF] As of today (oct 2000) it is not supported so
0N/A // legalValues is null for arrays. Nothing to do.
0N/A
0N/A // Returns our legalValues Set (set was constructed unmodifiable)
0N/A return (legalValues);
0N/A }
0N/A
0N/A /**
0N/A * Returns the minimal value for the parameter described by this
0N/A * {@code OpenMBeanParameterInfoSupport} instance, if specified,
0N/A * or {@code null} otherwise.
0N/A */
0N/A public Comparable<?> getMinValue() {
0N/A
0N/A // Note: only comparable values have a minValue, so that's not
0N/A // the case of arrays and tabulars (always null).
0N/A
0N/A return minValue;
0N/A }
0N/A
0N/A /**
0N/A * Returns the maximal value for the parameter described by this
0N/A * {@code OpenMBeanParameterInfoSupport} instance, if specified,
0N/A * or {@code null} otherwise.
0N/A */
0N/A public Comparable<?> getMaxValue() {
0N/A
0N/A // Note: only comparable values have a maxValue, so that's not
0N/A // the case of arrays and tabulars (always null).
0N/A
0N/A return maxValue;
0N/A }
0N/A
0N/A /**
0N/A * Returns {@code true} if this {@code
0N/A * OpenMBeanParameterInfoSupport} instance specifies a non-null
0N/A * default value for the described parameter, {@code false}
0N/A * otherwise.
0N/A */
0N/A public boolean hasDefaultValue() {
0N/A
0N/A return (defaultValue != null);
0N/A }
0N/A
0N/A /**
0N/A * Returns {@code true} if this {@code
0N/A * OpenMBeanParameterInfoSupport} instance specifies a non-null
0N/A * set of legal values for the described parameter, {@code false}
0N/A * otherwise.
0N/A */
0N/A public boolean hasLegalValues() {
0N/A
0N/A return (legalValues != null);
0N/A }
0N/A
0N/A /**
0N/A * Returns {@code true} if this {@code
0N/A * OpenMBeanParameterInfoSupport} instance specifies a non-null
0N/A * minimal value for the described parameter, {@code false}
0N/A * otherwise.
0N/A */
0N/A public boolean hasMinValue() {
0N/A
0N/A return (minValue != null);
0N/A }
0N/A
0N/A /**
0N/A * Returns {@code true} if this {@code
0N/A * OpenMBeanParameterInfoSupport} instance specifies a non-null
0N/A * maximal value for the described parameter, {@code false}
0N/A * otherwise.
0N/A */
0N/A public boolean hasMaxValue() {
0N/A
0N/A return (maxValue != null);
0N/A }
0N/A
0N/A
0N/A /**
0N/A * Tests whether {@code obj} is a valid value for the parameter
0N/A * described by this {@code OpenMBeanParameterInfo} instance.
0N/A *
0N/A * @param obj the object to be tested.
0N/A *
0N/A * @return {@code true} if {@code obj} is a valid value
0N/A * for the parameter described by this
0N/A * {@code OpenMBeanParameterInfo} instance,
0N/A * {@code false} otherwise.
0N/A */
0N/A public boolean isValue(Object obj) {
0N/A return OpenMBeanAttributeInfoSupport.isValue(this, obj);
0N/A // compiler bug? should be able to omit class name here
0N/A // also below in toString and hashCode
0N/A }
0N/A
0N/A
0N/A /* *** Commodity methods from java.lang.Object *** */
0N/A
0N/A
0N/A /**
0N/A * <p>Compares the specified {@code obj} parameter with this {@code
0N/A * OpenMBeanParameterInfoSupport} instance for equality.</p>
0N/A *
0N/A * <p>Returns {@code true} if and only if all of the following
0N/A * statements are true:
0N/A *
0N/A * <ul>
0N/A * <li>{@code obj} is non null,</li>
0N/A * <li>{@code obj} also implements the {@code OpenMBeanParameterInfo}
0N/A * interface,</li>
0N/A * <li>their names are equal</li>
0N/A * <li>their open types are equal</li>
0N/A * <li>their default, min, max and legal values are equal.</li>
0N/A * </ul>
0N/A * This ensures that this {@code equals} method works properly for
0N/A * {@code obj} parameters which are different implementations of
0N/A * the {@code OpenMBeanParameterInfo} interface.
0N/A *
0N/A * <p>If {@code obj} also implements {@link DescriptorRead}, then its
0N/A * {@link DescriptorRead#getDescriptor() getDescriptor()} method must
0N/A * also return the same value as for this object.</p>
0N/A *
0N/A * @param obj the object to be compared for equality with this
0N/A * {@code OpenMBeanParameterInfoSupport} instance.
0N/A *
0N/A * @return {@code true} if the specified object is equal to this
0N/A * {@code OpenMBeanParameterInfoSupport} instance.
0N/A */
0N/A public boolean equals(Object obj) {
0N/A if (!(obj instanceof OpenMBeanParameterInfo))
0N/A return false;
0N/A
0N/A OpenMBeanParameterInfo other = (OpenMBeanParameterInfo) obj;
0N/A
0N/A return equal(this, other);
0N/A }
0N/A
0N/A /**
0N/A * <p>Returns the hash code value for this {@code
0N/A * OpenMBeanParameterInfoSupport} instance.</p>
0N/A *
0N/A * <p>The hash code of an {@code OpenMBeanParameterInfoSupport}
0N/A * instance is the sum of the hash codes of all elements of
0N/A * information used in {@code equals} comparisons (ie: its name,
0N/A * its <i>open type</i>, its default, min, max and legal
0N/A * values, and its Descriptor).
0N/A *
0N/A * <p>This ensures that {@code t1.equals(t2)} implies that {@code
0N/A * t1.hashCode()==t2.hashCode()} for any two {@code
0N/A * OpenMBeanParameterInfoSupport} instances {@code t1} and {@code
0N/A * t2}, as required by the general contract of the method {@link
0N/A * Object#hashCode() Object.hashCode()}.
0N/A *
0N/A * <p>However, note that another instance of a class implementing
0N/A * the {@code OpenMBeanParameterInfo} interface may be equal to
0N/A * this {@code OpenMBeanParameterInfoSupport} instance as defined
0N/A * by {@link #equals(java.lang.Object)}, but may have a different
0N/A * hash code if it is calculated differently.
0N/A *
0N/A * <p>As {@code OpenMBeanParameterInfoSupport} instances are
0N/A * immutable, the hash code for this instance is calculated once,
0N/A * on the first call to {@code hashCode}, and then the same value
0N/A * is returned for subsequent calls.
0N/A *
0N/A * @return the hash code value for this {@code
0N/A * OpenMBeanParameterInfoSupport} instance
0N/A */
0N/A public int hashCode() {
0N/A
0N/A // Calculate the hash code value if it has not yet been done
0N/A // (ie 1st call to hashCode())
0N/A //
0N/A if (myHashCode == null)
0N/A myHashCode = OpenMBeanAttributeInfoSupport.hashCode(this);
0N/A
0N/A // return always the same hash code for this instance (immutable)
0N/A //
0N/A return myHashCode.intValue();
0N/A }
0N/A
0N/A /**
0N/A * Returns a string representation of this
0N/A * {@code OpenMBeanParameterInfoSupport} instance.
0N/A * <p>
0N/A * The string representation consists of the name of this class (i.e.
0N/A * {@code javax.management.openmbean.OpenMBeanParameterInfoSupport}),
0N/A * the string representation of the name and open type of the described
0N/A * parameter, the string representation of its default, min, max and legal
0N/A * values and the string representation of its descriptor.
0N/A * <p>
0N/A * As {@code OpenMBeanParameterInfoSupport} instances are immutable,
0N/A * the string representation for this instance is calculated once,
0N/A * on the first call to {@code toString}, and then the same value
0N/A * is returned for subsequent calls.
0N/A *
0N/A * @return a string representation of this
0N/A * {@code OpenMBeanParameterInfoSupport} instance.
0N/A */
0N/A public String toString() {
0N/A
0N/A // Calculate the string value if it has not yet been done (ie
0N/A // 1st call to toString())
0N/A //
0N/A if (myToString == null)
0N/A myToString = OpenMBeanAttributeInfoSupport.toString(this);
0N/A
0N/A // return always the same string representation for this
0N/A // instance (immutable)
0N/A //
0N/A return myToString;
0N/A }
0N/A
0N/A}