mcconnell 2002/08/08 02:58:41
Added: assembly/src/java/org/apache/excalibur/merlin/assembly
KernelManager.java
Log:
Seperation of Kernel and Container management.
Revision Changes Path
1.1
jakarta-avalon-excalibur/assembly/src/java/org/apache/excalibur/merlin/assembly/KernelManager.java
Index: KernelManager.java
===================================================================
/*
* Copyright (C) The Apache Software Foundation. All rights reserved.
*
* This software is published under the terms of the Apache Software License
* version 1.1, a copy of which has been included with this distribution in
* the LICENSE.txt file.
*/
package org.apache.excalibur.merlin.assembly;
import java.io.File;
import java.util.List;
import java.util.Map;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.Hashtable;
import java.util.ArrayList;
import java.util.Vector;
import java.util.Iterator;
import org.apache.avalon.framework.CascadingException;
import org.apache.avalon.framework.logger.Logger;
import org.apache.avalon.framework.logger.LogEnabled;
import org.apache.avalon.framework.logger.AbstractLogEnabled;
import org.apache.avalon.framework.context.Context;
import org.apache.avalon.framework.context.ContextException;
import org.apache.avalon.framework.context.DefaultContext;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.ConfigurationException;
import org.apache.avalon.framework.configuration.DefaultConfiguration;
import org.apache.avalon.framework.configuration.Configurable;
import org.apache.avalon.framework.activity.Startable;
import org.apache.avalon.framework.activity.Initializable;
import org.apache.avalon.framework.activity.Startable;
import org.apache.avalon.framework.activity.Disposable;
import org.apache.avalon.excalibur.i18n.ResourceManager;
import org.apache.avalon.excalibur.i18n.Resources;
import org.apache.excalibur.configuration.ConfigurationUtil;
import org.apache.excalibur.merlin.assembly.resource.LifecycleHelper;
import org.apache.excalibur.merlin.assembly.resource.ResourceProvider;
import org.apache.excalibur.merlin.assembly.resource.ProfileDesignator;
import org.apache.excalibur.merlin.model.ContainerDescriptor;
import org.apache.excalibur.merlin.model.ClasspathDescriptor;
import org.apache.excalibur.merlin.container.Container;
import org.apache.excalibur.merlin.container.DefaultContainer;
import org.apache.excalibur.merlin.model.LoggingDescriptor;
import org.apache.excalibur.merlin.model.builder.XMLContainerUtil;
import org.apache.excalibur.merlin.model.Category;
import org.apache.excalibur.merlin.model.CategoriesDescriptor;
import org.apache.excalibur.merlin.model.Profile;
import org.apache.excalibur.merlin.model.Resource;
import org.apache.excalibur.meta.info.PhaseDescriptor;
import org.apache.excalibur.meta.info.ServiceDescriptor;
import org.apache.excalibur.meta.info.ReferenceDescriptor;
import org.apache.excalibur.meta.info.DependencyDescriptor;
import org.apache.excalibur.meta.info.ExtensionDescriptor;
import org.apache.excalibur.meta.info.Type;
import org.apache.excalibur.meta.info.Facility;
import org.apache.excalibur.meta.verifier.ComponentVerifier;
/**
* Classloader for an assembly of components that provides the complete
* assembly engine, profile selection management, and resource creation
* functionality.
*
* @author <a href="mailto:[EMAIL PROTECTED]">Stephen McConnell</a>
* @version $Revision: 1.1 $ $Date: 2002/08/08 09:58:40 $
*/
public class KernelManager extends ContainerManager
{
//===================================================================
// static
//===================================================================
private static final Resources REZ =
ResourceManager.getPackageResources( KernelManager.class );
/**
* Context key used by the kernel to access the kernel meta-data
descriptor.
*/
public static final String LOGGING_KEY = "logging";
//===================================================================
// state
//===================================================================
/**
* The description of the logging system that contains the declaration of
* the logging targets to use. This value is used as the constructor
* argument to the DefaultLoggerManager.
*/
//private LoggingDescriptor m_loggingDescriptor;
/**
* The logging manager that we use to construct logging catagories
* and logging channels.
*/
private DefaultLoggerManager m_logging;
//===================================================================
// constructor
//===================================================================
/**
* Creation of a new KernelManager.
*/
public KernelManager( )
{
this( "kernel" );
}
/**
* Creation of a new <code>KernelManager</code>.
* @param path the relative path to assign to this classloader
*/
public KernelManager( String path )
{
this( Thread.currentThread().getContextClassLoader(), path );
}
/**
* Creation of a new <code>KernelManager</code>.
* @param parent the parent classloader
* @param name the relative path to assign to this classloader
*/
public KernelManager( ClassLoader parent, String path )
{
super( parent, path );
}
//=======================================================================
// Contextualizable
//=======================================================================
/**
* Declaration of the logging manager.
* @param context the context object containing the logging manager
*/
public void contextualize( Context context ) throws ContextException
{
m_logging = (DefaultLoggerManager) context.get( LOGGING_KEY );
super.contextualize( context );
}
//=======================================================================
// Initializable
//=======================================================================
public void initialize() throws Exception
{
super.initialize();
}
protected DefaultLoggerManager getLoggingManager()
{
if( m_logging != null )
{
return m_logging;
}
else
{
ContainerManager parent = getParentManager();
if( parent != null )
{
return parent.getLoggingManager();
}
else
{
throw new NullPointerException("logging");
}
}
}
//===================================================================
// Disposable
//===================================================================
public void dispose()
{
super.dispose();
m_logging = null;
}
}
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