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/*
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* Copyright 2004 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 sun.management;
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import java.io.Serializable;
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import java.util.*;
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import javax.management.openmbean.CompositeData;
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import javax.management.openmbean.CompositeType;
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import javax.management.openmbean.OpenType;
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import javax.management.openmbean.TabularType;
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/**
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* This abstract class provides the implementation of the CompositeData
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* interface. A CompositeData object will be lazily created only when
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* the CompositeData interface is used.
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*
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* Classes that extends this abstract class will implement the
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* getCompositeData() method. The object returned by the
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* getCompositeData() is an instance of CompositeData such that
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* the instance serializes itself as the type CompositeDataSupport.
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*/
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public abstract class LazyCompositeData
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implements CompositeData, Serializable {
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private CompositeData compositeData;
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// Implementation of the CompositeData interface
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public boolean containsKey(String key) {
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return compositeData().containsKey(key);
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}
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public boolean containsValue(Object value) {
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return compositeData().containsValue(value);
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}
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public boolean equals(Object obj) {
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return compositeData().equals(obj);
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}
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public Object get(String key) {
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return compositeData().get(key);
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}
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public Object[] getAll(String[] keys) {
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return compositeData().getAll(keys);
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}
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public CompositeType getCompositeType() {
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return compositeData().getCompositeType();
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}
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public int hashCode() {
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return compositeData().hashCode();
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}
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public String toString() {
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/** FIXME: What should this be?? */
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return compositeData().toString();
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}
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public Collection values() {
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return compositeData().values();
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}
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/* Lazy creation of a CompositeData object
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* only when the CompositeData interface is used.
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*/
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private synchronized CompositeData compositeData() {
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if (compositeData != null)
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return compositeData;
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compositeData = getCompositeData();
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return compositeData;
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}
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/**
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* Designate to a CompositeData object when writing to an
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* output stream during serialization so that the receiver
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* only requires JMX 1.2 classes but not any implementation
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* specific class.
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*/
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protected Object writeReplace() throws java.io.ObjectStreamException {
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return compositeData();
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}
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/**
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* Returns the CompositeData representing this object.
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* The returned CompositeData object must be an instance
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* of javax.management.openmbean.CompositeDataSupport class
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* so that no implementation specific class is required
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* for unmarshalling besides JMX 1.2 classes.
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*/
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protected abstract CompositeData getCompositeData();
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// Helper methods
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static String getString(CompositeData cd, String itemName) {
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if (cd == null)
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throw new IllegalArgumentException("Null CompositeData");
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return (String) cd.get(itemName);
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}
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static boolean getBoolean(CompositeData cd, String itemName) {
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if (cd == null)
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throw new IllegalArgumentException("Null CompositeData");
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return ((Boolean) cd.get(itemName)).booleanValue();
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}
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static long getLong(CompositeData cd, String itemName) {
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if (cd == null)
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throw new IllegalArgumentException("Null CompositeData");
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return ((Long) cd.get(itemName)).longValue();
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}
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static int getInt(CompositeData cd, String itemName) {
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if (cd == null)
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throw new IllegalArgumentException("Null CompositeData");
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return ((Integer) cd.get(itemName)).intValue();
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}
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/**
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* Compares two CompositeTypes and returns true if
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* all items in type1 exist in type2 and their item types
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* are the same.
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*/
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protected static boolean isTypeMatched(CompositeType type1, CompositeType type2) {
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if (type1 == type2) return true;
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// We can't use CompositeType.isValue() since it returns false
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// if the type name doesn't match.
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Set allItems = type1.keySet();
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// Check all items in the type1 exist in type2
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if (!type2.keySet().containsAll(allItems))
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return false;
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for (Iterator iter = allItems.iterator(); iter.hasNext(); ) {
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String item = (String) iter.next();
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OpenType ot1 = type1.getType(item);
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OpenType ot2 = type2.getType(item);
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if (ot1 instanceof CompositeType) {
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if (! (ot2 instanceof CompositeType))
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return false;
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if (!isTypeMatched((CompositeType) ot1, (CompositeType) ot2))
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return false;
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} else if (ot1 instanceof TabularType) {
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if (! (ot2 instanceof TabularType))
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return false;
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if (!isTypeMatched((TabularType) ot1, (TabularType) ot2))
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return false;
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} else if (!ot1.equals(ot2)) {
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return false;
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}
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}
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return true;
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}
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protected static boolean isTypeMatched(TabularType type1, TabularType type2) {
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if (type1 == type2) return true;
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List list1 = type1.getIndexNames();
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List list2 = type2.getIndexNames();
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// check if the list of index names are the same
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if (!list1.equals(list2))
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return false;
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return isTypeMatched(type1.getRowType(), type2.getRowType());
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}
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}
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