author | sjiang |
Fri, 17 Apr 2015 09:40:02 +0200 | |
changeset 30355 | e37c7eba132f |
parent 25859 | 3317bb8137f4 |
child 33260 | af1ca24593aa |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2004, 2015, Oracle and/or its affiliates. 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. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* 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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public 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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public 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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public 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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public 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<String> 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 (String item: allItems) { |
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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<String> list1 = type1.getIndexNames(); |
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List<String> 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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private static final long serialVersionUID = -2190411934472666714L; |
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} |