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/**
*
* Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
*
* 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.apache.tuscany.core.system.context;
import java.util.concurrent.ConcurrentHashMap;
import org.apache.tuscany.core.config.ConfigurationException;
import org.apache.tuscany.core.context.AutowireContext;
import org.apache.tuscany.core.context.AutowireResolutionException;
import org.apache.tuscany.core.context.CompositeContext;
import org.apache.tuscany.core.context.ConfigurationContext;
import org.apache.tuscany.core.context.EventContext;
import org.apache.tuscany.core.context.ScopeContext;
import org.apache.tuscany.core.context.ScopeStrategy;
import org.apache.tuscany.core.context.SystemCompositeContext;
import org.apache.tuscany.core.context.impl.AbstractCompositeContext;
import org.apache.tuscany.core.context.impl.EventContextImpl;
import org.apache.tuscany.core.message.MessageFactory;
import org.apache.tuscany.core.message.impl.MessageFactoryImpl;
import org.apache.tuscany.core.system.config.SystemObjectContextFactory;
import org.apache.tuscany.core.wire.WireFactoryFactory;
import org.apache.tuscany.core.wire.jdk.JDKWireFactoryFactory;
/**
* Implements an composite context for system components. By default a system context uses the scopes specified by
* {@link org.apache.tuscany.core.system.context.SystemScopeStrategy}. In addition, it implements an autowire policy
* where entry points configured with a {@link org.apache.tuscany.core.system.assembly.SystemBinding} are matched
* according to their exposed interface. A system context may contain child composite contexts but an entry point in a
* child context will only be outwardly accessible if there is an entry point that exposes it configured in the
* top-level system context.
*
* @version $Rev$ $Date$
*/
public class SystemCompositeContextImpl extends AbstractCompositeContext implements SystemCompositeContext {
public SystemCompositeContextImpl() {
super();
eventContext = new EventContextImpl();
scopeStrategy = new SystemScopeStrategy();
}
public SystemCompositeContextImpl(String name,
CompositeContext parent,
AutowireContext autowire,
ScopeStrategy strategy,
EventContext ctx,
ConfigurationContext configCtx
) {
super(name, parent, strategy, ctx, configCtx);
setAutowireContext(autowire);
scopeIndex = new ConcurrentHashMap<String, ScopeContext>();
}
public void registerJavaObject(String componentName, Class<?> service, Object instance) throws ConfigurationException {
SystemObjectContextFactory configuration = new SystemObjectContextFactory(componentName, instance);
registerConfiguration(configuration);
ScopeContext scope = scopeContexts.get(configuration.getScope());
registerAutowireInternal(service, componentName, scope);
}
// FIXME These should be removed and configured
private static final MessageFactory messageFactory = new MessageFactoryImpl();
private static final WireFactoryFactory WIRE_FACTORY_FACTORY = new JDKWireFactoryFactory();
public <T> T resolveInstance(Class<T> instanceInterface) throws AutowireResolutionException {
if (CompositeContext.class.equals(instanceInterface)) {
return instanceInterface.cast(this);
} else if (MessageFactory.class.equals(instanceInterface)) {
return instanceInterface.cast(messageFactory);
} else if (WireFactoryFactory.class.equals(instanceInterface)) {
return instanceInterface.cast(WIRE_FACTORY_FACTORY);
} else {
return super.resolveInstance(instanceInterface);
}
}
}
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