/*
* Copyright (c) 2005, 2008, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package sun.management;
import com.sun.management.VMOption;
import com.sun.management.VMOption.Origin;
import javax.management.openmbean.CompositeType;
import javax.management.openmbean.CompositeData;
import javax.management.openmbean.CompositeDataSupport;
import javax.management.openmbean.OpenDataException;
/**
* A CompositeData for VMOption for the local management support.
* This class avoids the performance penalty paid to the
* construction of a CompositeData use in the local case.
*/
public class VMOptionCompositeData extends LazyCompositeData {
private final VMOption option;
private VMOptionCompositeData(VMOption option) {
this.option = option;
}
public VMOption getVMOption() {
return option;
}
public static CompositeData toCompositeData(VMOption option) {
VMOptionCompositeData vcd = new VMOptionCompositeData(option);
return vcd.getCompositeData();
}
protected CompositeData getCompositeData() {
// CONTENTS OF THIS ARRAY MUST BE SYNCHRONIZED WITH
// vmOptionItemNames!
final Object[] vmOptionItemValues = {
option.getName(),
option.getValue(),
new Boolean(option.isWriteable()),
option.getOrigin().toString(),
};
try {
return new CompositeDataSupport(vmOptionCompositeType,
vmOptionItemNames,
vmOptionItemValues);
} catch (OpenDataException e) {
// Should never reach here
throw new AssertionError(e);
}
}
private static final CompositeType vmOptionCompositeType;
static {
try {
vmOptionCompositeType = (CompositeType)
MappedMXBeanType.toOpenType(VMOption.class);
} catch (OpenDataException e) {
// Should never reach here
throw new AssertionError(e);
}
}
static CompositeType getVMOptionCompositeType() {
return vmOptionCompositeType;
}
private static final String NAME = "name";
private static final String VALUE = "value";
private static final String WRITEABLE = "writeable";
private static final String ORIGIN = "origin";
private static final String[] vmOptionItemNames = {
NAME,
VALUE,
WRITEABLE,
ORIGIN,
};
public static String getName(CompositeData cd) {
return getString(cd, NAME);
}
public static String getValue(CompositeData cd) {
return getString(cd, VALUE);
}
public static Origin getOrigin(CompositeData cd) {
String o = getString(cd, ORIGIN);
return Enum.valueOf(Origin.class, o);
}
public static boolean isWriteable(CompositeData cd) {
return getBoolean(cd, WRITEABLE);
}
/** Validate if the input CompositeData has the expected
* CompositeType (i.e. contain all attributes with expected
* names and types).
*/
public static void validateCompositeData(CompositeData cd) {
if (cd == null) {
throw new NullPointerException("Null CompositeData");
}
if (!isTypeMatched(vmOptionCompositeType, cd.getCompositeType())) {
throw new IllegalArgumentException(
"Unexpected composite type for VMOption");
}
}
private static final long serialVersionUID = -2395573975093578470L;
}