/*
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*
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* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
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* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
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/*
* $Header: /cvs/glassfish/admin/mbeanapi-impl/src/java/com/sun/enterprise/management/support/DelegateBase.java,v 1.5 2007/05/05 05:23:41 tcfujii Exp $
* $Revision: 1.5 $
* $Date: 2007/05/05 05:23:41 $
*/
package com.sun.enterprise.management.support;
import java.util.Set;
import javax.management.ObjectName;
import javax.management.MBeanServer;
import javax.management.Attribute;
import javax.management.AttributeList;
import javax.management.InstanceNotFoundException;
import javax.management.AttributeNotFoundException;
import javax.management.InvalidAttributeValueException;
import javax.management.ReflectionException;
import javax.management.MBeanException;
import javax.management.MBeanParameterInfo;
import javax.management.MBeanOperationInfo;
import com.sun.appserv.management.base.AMXDebug;
import com.sun.appserv.management.util.jmx.JMXUtil;
import com.sun.appserv.management.util.misc.ArrayConversion;
import com.sun.appserv.management.util.misc.Output;
/**
Delegate base class which most Delegates will want to extend.
*/
public abstract class DelegateBase implements Delegate
{
private Set mAttributeNames;
private DelegateOwner mOwner;
private Output mDebug;
private final String mID;
/**
An operation has not been implemented. Deal with appropriately.
*/
protected void
unimplementedOperation( String operation )
{
debug( "unimplemented operation: " + operation );
throw new UnsupportedOperationException( operation );
}
public
DelegateBase( final String id, DelegateOwner owner )
{
mID = id;
mAttributeNames = null;
mOwner = owner;
mDebug = null;
}
public void
setDebugOutput( final Output debugOutput )
{
mDebug = debugOutput;
}
protected final void
debug(final Object o)
{
if ( mDebug != null )
{
mDebug.println( o );
}
}
public final String getID() { return mID; }
public void
setOwner( final DelegateOwner owner )
{
mOwner = owner;
}
public DelegateOwner
getOwner()
{
return( mOwner );
}
/**
Default behavior is to loop over each Attribute; subclass
may wish to maintain atomicity by implementing directly.
*/
public AttributeList
getAttributes( final String[] attrNames )
{
final AttributeList attrs = new AttributeList();
for( int i = 0; i < attrNames.length; ++i )
{
try
{
final String attrName = attrNames[ i ];
final Attribute attr =
new Attribute( attrName, getAttribute( attrName ) );
attrs.add( attr );
}
catch( Exception e )
{
// ignore
}
}
return( attrs );
}
/**
Default behavior is too loop over each Attribute; subclass
may wish to maintain atomicity by implementing directly.
*/
public AttributeList
setAttributes( final AttributeList attrs )
{
final int numAttrs = attrs.size();
final AttributeList successList = new AttributeList();
for( int i = 0; i < numAttrs; ++i )
{
final Attribute attr = (Attribute)attrs.get( i );
try
{
setAttribute( attr );
successList.add( attr );
}
catch( AttributeNotFoundException e )
{
// ignore, as per spec
}
catch( InvalidAttributeValueException e )
{
// ignore, as per spec
}
}
return( successList );
}
/**
Do the classnames match the parameter infos?
*/
private boolean
typesMatch(
final String[] types,
final MBeanParameterInfo[] paramInfos )
{
boolean matches = false;
final int numTypes = types == null ? 0 : types.length;
final int numParams = paramInfos == null ? 0 : paramInfos.length;
if ( numTypes == numParams )
{
matches = true;
for( int i = 0; i < numTypes; ++i )
{
if ( ! types[ i ].equals( paramInfos[ i ].getType() ) )
{
matches = false;
break;
}
}
}
return( matches );
}
public synchronized boolean
supportsAttribute( String attrName )
{
if ( mAttributeNames == null )
{
final String[] attrNames =
JMXUtil.getAttributeNames( getMBeanInfo().getAttributes() );
mAttributeNames = ArrayConversion.arrayToSet( attrNames );
}
return( mAttributeNames.contains( attrName ) );
}
protected String
_getDefaultValue( final String name )
throws AttributeNotFoundException
{
return "!!! NO DEFAULT VALUE FOR: \"" + name + "\" !!!" + ", " + this.getClass().getName();
}
public final String
getDefaultValue( final String name )
throws AttributeNotFoundException
{
if ( ! supportsAttribute( name ) )
{
throw new AttributeNotFoundException( name );
}
return _getDefaultValue( name );
}
public boolean
supportsOperation(
String operationName,
Object[] args,
String[] types )
{
boolean supports = false;
final MBeanOperationInfo[] opInfos = getMBeanInfo().getOperations();
for( int i = 0; i < opInfos.length; ++i )
{
final MBeanOperationInfo info = opInfos[ i ];
if ( info.getName().equals( operationName ) )
{
if ( typesMatch( types, info.getSignature() ) )
{
supports = true;
break;
}
}
}
return( supports );
}
}
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