/*
* Copyright (c) 2008, Rickard Öberg. All Rights Reserved.
* Copyright (c) 2008, Niclas Hedhman.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.qi4j.runtime.structure;
import java.util.ArrayList;
import java.util.List;
import org.qi4j.api.activation.ActivationEventListener;
import org.qi4j.api.activation.ActivationException;
import org.qi4j.api.activation.PassivationException;
import org.qi4j.api.common.MetaInfo;
import org.qi4j.api.structure.Application;
import org.qi4j.api.structure.ApplicationDescriptor;
import org.qi4j.api.structure.Layer;
import org.qi4j.api.structure.Module;
import org.qi4j.bootstrap.Qi4jRuntime;
import org.qi4j.runtime.activation.ActivationDelegate;
/**
* Instance of a Qi4j application. Contains a list of layers which are managed by this application
*/
public class ApplicationInstance
implements Application
{
// Constructor parameters
private final ApplicationModel applicationModel;
private final Qi4jRuntime runtime;
private final MetaInfo instanceMetaInfo;
// Eager instance objects
private final ActivationDelegate activation;
private final List<LayerInstance> layerInstances;
public ApplicationInstance( ApplicationModel model, Qi4jRuntime runtime, MetaInfo instanceMetaInfo )
{
// Constructor parameters
this.applicationModel = model;
this.runtime = runtime;
this.instanceMetaInfo = instanceMetaInfo;
// Eager instance objects
activation = new ActivationDelegate( this );
layerInstances = new ArrayList<>();
}
@Override
public String toString()
{
return name();
}
// Implementation of Application
@Override
public String name()
{
return applicationModel.name();
}
@Override
public String version()
{
return applicationModel.version();
}
@Override
public Mode mode()
{
return applicationModel.mode();
}
@Override
public Layer findLayer( String layerName )
{
for( LayerInstance layerInstance : layerInstances )
{
if( layerInstance.model().name().equals( layerName ) )
{
return layerInstance;
}
}
throw new IllegalArgumentException( "No such layer:" + layerName );
}
@Override
public Module findModule( String layerName, String moduleName )
{
for( LayerInstance layerInstance : layerInstances )
{
if( layerInstance.model().name().equals( layerName ) )
{
return layerInstance.findModule( moduleName );
}
}
throw new IllegalArgumentException( "No such layer:" + layerName );
}
@Override
public ApplicationDescriptor descriptor()
{
return applicationModel;
}
// Implementation of MetaInfoHolder
@Override
public <T> T metaInfo( Class<T> infoType )
{
return instanceMetaInfo.get( infoType );
}
// Implementation of Activation
@Override
public void activate()
throws ActivationException
{
activation.activate( applicationModel.newActivatorsInstance(), layerInstances );
}
@Override
public void passivate()
throws PassivationException
{
activation.passivate();
}
@Override
public void registerActivationEventListener( ActivationEventListener listener )
{
activation.registerActivationEventListener( listener );
}
@Override
public void deregisterActivationEventListener( ActivationEventListener listener )
{
activation.deregisterActivationEventListener( listener );
}
// Other methods
/* package */ void addLayer( LayerInstance layer )
{
layer.registerActivationEventListener( activation );
layerInstances.add( layer );
}
public Qi4jRuntime runtime()
{
return runtime;
}
}